https://wiki.jlab.org/ciswiki/api.php?action=feedcontributions&user=Gabrielp&feedformat=atomCiswikidb - User contributions [en]2024-03-29T06:48:01ZUser contributionsMediaWiki 1.35.7https://wiki.jlab.org/ciswiki/index.php?title=Feb_28_2024&diff=30690Feb 28 20242024-02-29T13:38:55Z<p>Gabrielp: </p>
<hr />
<div>==From last time==<br />
<br />
* <br />
* Simulations<br />
** Max: <br />
*** Repeat simulations from today's presentation but with space charge ON and with Moller specs bunch charge / beam current. <br />
*** Add dipole field map to simulations.<br />
*** Add to simulations graphics location of first beam viewer screen<br />
*** Continue exploring option B, perhaps with slightly stronger focusing compared to option A(16 deg / 30 deg) Pierce angle cathode front end, but do this with space charge ON and with Moller spec bunch charge<br />
** Alicia: Add emittance to slides from today's presentation<br />
** Yan: Develop beam studies plan (ATLis) to implement BEFORE SAD for measuring beam size at Y-chamber viewer vs first solenoid BDL (or current) for R28 gun operating at 140 kV. Results will then be compared with beam envelope simulation results from Max and from Alicia.<br />
<br />
* ME<br />
** Carlos: <br />
*** Add to schedule fabrication of "plan B' second choice Pierce angle cathode front end. <br />
*** Check actual design and manufacturing progress of plan A (16 deg / 30 deg) Pierce angle cathode front end against schedule.<br />
*** Define milestones and deadlines<br />
* Documentation<br />
** Gabriel: start writing a technical note detailing the process and steps from concept anode-cathode geometry to production of electric field maps and implementation to GPT. Consideration such as puck position wrt to plan of the electrode hole must be described, as well as process for parametric geometry studies including Pierce angle, hole size, junction angle between spherical electrode and front end cathode. Include process for validating CST against POISSON, etc.<br />
<br />
<br />
==Updates==<br />
<br />
* Max:<br />
** 15° dipole simulated and compared with measurement<br />
*** discrepancy in horizontal (de)focusing yet to be understood<br />
*** measured skew coupling likely caused by VIP1I01, planning to mitigate it... could be included in GPT if needed<br />
*** these effects are small compared to the possible variations in gun optics; our not fully understanding them yet is not prohibitive to gun redesign<br />
** optimized lens settings with space charge: [[media:20240227 optimized lenses comparison 200kv.pdf|200 kV, solenoids SW vs. repaired CW]]<br />
*** all four setups are optimized independently for minimum beam sizes in MDR1I02 and MWF1I04<br />
*** beam size/divergence depends on space charge, but optimum BDL for solenoids is only weakly dependent<br />
*** SW solenoids cause emittance exchange due to gun astigmatism, but this gets removed by the second one, no significant difference downstream compared with CW<br />
** design strategy for Plan B electrode driven by possible failure modes: a) beam optics, b) FE / HV breakdown, c) something we are overlooking entirely<br />
*** a) not much freedom to further reduce the Pierce angle without moving the cathode in z, so we're not changing it; no obvious reason to want to increase the focusing strength from nominal<br />
*** b) the only degree of freedom is the junction angle; try to maximize it without exceeding surface-field threshold on lip. Gabriel to provide final numbers<br />
*** c) no idea what to do about this, so fingers crossed<br />
** Gabriel<br />
*** CST simulations looking at the gradient of the lip and junction for various junction angle options.<br />
**** [[media:R30-4_Junction_angle.pptx|R30-4 junction angle and lip radius gradients vs junction angle]]<br />
<br />
=<br />=<br />
[https://wiki.jlab.org/ciswiki/index.php/200_kV_Polarized_Gun Return to 200 kV Gun page]</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:R30-4_Junction_angle.pptx&diff=30689File:R30-4 Junction angle.pptx2024-02-29T13:37:29Z<p>Gabrielp: Gabrielp uploaded a new version of File:R30-4 Junction angle.pptx</p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:R30-4_Junction_angle.pptx&diff=30687File:R30-4 Junction angle.pptx2024-02-28T13:53:11Z<p>Gabrielp: </p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=Gabriel_Palacios-Serrano&diff=30532Gabriel Palacios-Serrano2024-01-17T13:56:47Z<p>Gabrielp: </p>
<hr />
<div>*[https://drive.google.com/file/d/1FpWgPuf9JgBxLSfFNQE8-ZHq7Sncs88N/view PhD Dissertation defense March 23 2021]<br />
*[[Media:Gabriel's thesis outline draft Feb 2019 Rev00.docx]] <br />
<br />
------------------------------------------------------------<br />
== HV insulator for 500 kV: ==<br />
** Feb 2023 project update [[Media: 500_kV_project_update_Feb_2023.pptx]]<br />
** Exploring the use of the receptacle and the sizes of the SF6 spool [[Media:HV_insulator-1st_month.pptx]]<br />
** Jan 2023 summary [[Media:500kV Summary Jan 2023.png]]<br />
** Reached 315 kV [[Media:221220253.5.png]]<br />
<br />
<br />
==Snapshots of tracking at -200 kV, E_0 = 0.025 eV , r = 2 mm.==<br />
<br />
[[Image:200 kV white tracking.png|500px|thumb|left|T-cathode]] [[Image:Shield 8 tracking.png|500px|thumb|right|R28-2]] [[Image:R30-3 tracking.png|500px|thumb|left|R30-3]] [[Image:R30-4 tracking.png|500px|thumb|right|R30-4]] <br />
<br />
==18 in gun:==<br />
<br />
** Kick and angle after S&A found a 0.5 mm anode deviation [[Media: CIS-R30-3_slots_SURVEYED_CHECK_crashed.pptx]]<br />
** Hinged anode simulations<span class="dangerousLink">[https://wiki.jlab.org/ciswiki/images/f/fa/18_in_CEBAF_gun_Hinged_anode.pptx 18_in_CEBAF_gun_Hinged_anode.pptx][https://wiki.jlab.org/ciswiki/images/b/bf/18_in_CEBAF_gun_Hinged_anode_V2_with_shift_comparison.pptx 18_in_CEBAF_gun_Hinged_anode_V2_with_shift_comparison.pptx] [https://wiki.jlab.org/ciswiki/images/b/b4/R30-3_Shauns_hinged_anode.pptx R30-3_Shauns_hinged_anode.pptx][https://wiki.jlab.org/ciswiki/images/c/ce/R30-3_Shauns_hinged_anode_FINER_MESH.pptx R30-3_Shauns_hinged_anode_FINER_MESH.pptx][https://wiki.jlab.org/ciswiki/images/8/8f/R30-3_Shauns_hinged_anode_Found_X_ASYM_culprit.pptx R30-3_Shauns_hinged_anode_Found_X_ASYM_culprit.pptx] ''' ''' </span><br />
** Comparing Shields to answer the question: Can we use a smaller shield for op at -200 kV? [[Media: GTS_gun_with_CEBAF_anode_Shields.pptx]]<br />
** Exploring the anode location to cancel vertical kick [[Media:18in_gun_anode_studies.pptx]]<br />
<br />
== Wien filter stuff: ==<br />
'''12th International Particle Accelerator Conference - IPAC’21, May 24-28, 2021''' https://www.ipac21.org/#<br />
** Wien filter submitted after JLab internal review approval [[Media:Gabriel Palacios Wien filter Abstract IPAC21 FINAL.docx]]<br />
** Poster slides [[Media:IPAC_2021_poster_slides_final_Gabriel_Palacios.pptx]]<br />
<br />
Summary comparing GPT results with ideal E-field CST model compared to actual surveyed Vertical Wien assembly. <br />
The presentation also indicates the location in the O group drive of the various CST-generated E-field maps and GPT beam dynamics simulations.<br />
The Horizontal beam assembly electrode assembly is < 100 micron difference in pitch along the beam path. There was no need to generate a new field map. <br />
*[[Media:Vertical Wien GPT sims with spline electrodes Surveyed.pptx]]<br />
<br />
Spline electrode GPT simulations<br />
* [[Media:Wien_filter_GPT_7_Spline_electrode.pptx ]]<br />
<br />
Asymmetric bias GPT simulations<br />
* [[Media:Wien_filter_GPT_6.pptx ]]<br />
<br />
Inter-plate gap GPT simulations<br />
* [[Media:Wien_filter_GPT_5.pptx ]]<br />
<br />
Optics of the Wien filter, final<br />
* [[Media:Wien_filter_GPT_4_FINAL.pptx ]]<br />
<br />
Optics of the Wien filter, first try<br />
* [[Media:Wien_filter_GPT_3.pptx ]]<br />
<br />
Bolts and washers (metal and alumina sims).<br />
* [[Media:Wien_filter_bolts_and_washers.pptx ]]<br />
<br />
Exploring the reduction on the inter-plate gap.<br />
* [[Media:Wien_filter_shorter_plate_gaps.pptx ]]<br />
<br />
Double thickness mounting tab sims.<br />
* [[Media:Wien_filter_mounting_tab.pptx ]]<br />
<br />
Wien filter 6: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_6.pptx ]] <br />
<br />
Wien filter 4: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_4.pptx ]]<br />
<br />
Wien filter 3: I measured the vacuum lab's Wien filter and checked what we can scavenge for the 40 kV feedthrough version.<br />
* [[Media:Wien_filter_3.pptx ]]<br />
<br />
Wien filter 2: Simulation results for the 40 kV feedthrough for Wien filter at UITF.<br />
* [[Media:Wien_filter_2.pptx ]]<br />
<br />
Wien filter 1: Simulation results for the existing (05/22/2019) Wien filter at UITF.<br />
* [[Media:Wien_filter_1.pptx ]]<br />
<br />
------------------------------------------------------------<br />
<br />
== Gun related ==<br />
<br />
'''R30-4'''<br />
* [[Media:R30-4_Puck_and_Pierce.pptx]]<br />
* [[Media:R30-4_Puck_and_Pierce_2.pptx]]<br />
<br />
'''Solidworks sumary'''<br />
<br />
* [[Media:GTS_gun_model_sumary.pdf]]<br />
* [[Media:T-cathode_gun_model_sumary.pdf]]<br />
<br />
<br />
'''Data taking runs''' <br />
<br />
UITF T-cathode electrode vs Small Shield: BPM data and centering in first lens at 200 [kV]<br />
* Rev5 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-8.pptx]]<br />
* Rev4 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-7.pptx]]<br />
* Rev3 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-6.pptx]]<br />
* Rev2 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-5.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-4.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-3.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV.pptx]]<br />
<br />
Log entry related to how the Laser XY stage moves along the X-axis<br />
* https://logbooks.jlab.org/entry/3704517<br />
<br />
Images of on axis QE run p2_2019-06-04_15_39 to calculate STEP-mm conversion factor<br />
* [[Media:QE scan fixed X 10000.png]]<br />
* [[Media:QE scan fixed Y 10000.png]]<br />
<br />
Ey difference for T-cathode and Small shield (From CST field maps)<br />
* [[Media:Ey difference for T-cathode and Small shield.PNG]]<br />
<br />
<br />
'''GPT, CST, COMSOL '''<br />
<br />
CST particle tracking of T-cathode, Small Shield and Big Shield @-200 kV<br />
* [[Media:Cathodes_particle_tracking_CST_1.pptx]]<br />
<br />
CORRECTION: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1_CORRECTED.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of GBacc on emittance. <br />
* [[Media:GTS_GPT_3.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of field map interpolation step-size on emittance. <br />
* [[Media:GTS_GPT_2.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -200 kV. This was produced using Yan's GTS parameters. We are trying to find out why is the measurements and simulated emittance so different. <br />
* [[Media:GTS_GPT_1.pptx]]<br />
<br />
THIS FILE HAS BEEN CORRECTED: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters. This is the same as the previous entry but shows extra slides with comparisons of the three cathodes wth one metric as requested by Matt. <br />
* [[Media:New_CEBAF_gun_CST_4_2.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:New_CEBAF_gun_CST_4.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV.<br />
* [[Media:New_CEBAF_gun_CST_3.pptx]]<br />
<br />
Test shields 1 to 7 simulations on CST for the -200 kV new CEBAF gun (and includes a bit of the GTS gun field maps at 200 kV w/small anode). <br />
* [[Media:New_CEBAF_gun_CST_2.pptx]]<br />
<br />
Test shields 1,2,3 & 4 simulations on CST for the -200 kV new CEBAF gun. <br />
* [[Media:New_CEBAF_gun_CST_1.pdf]] [[Media:New_CEBAF_gun_CST_1.pptx]]<br />
* [[Media:New_CEBAF_gun_CST_1_w-noshield.pdf]] [[Media:New_CEBAF_gun_CST_1_w-noshield.pptx]]<br />
<br />
Field maps for the -200 kV new CEBAF gun @-130 kV and -180 kV. <br />
* [[Media:Field_maps_for_the_new_CEBAF_gun_at_130_kV_and_180_kV.pdf]]<br />
<br />
Results for CST microwave studio simulations of the -300 kV GTS gun. <br />
* [[Media:GTS_CST_1.pdf]]<br />
<br />
Corrections on the simulation results for the -200 kV CEBAF gun paper. <br />
* [[Media:COMSOL_corrected.pdf]]<br />
<br />
Document with details on the Pierce geometry angle variations for the -300 kV GTS gun. <br />
* [[Media:GTS COMSOL 8.pdf]]<br />
<br />
COMSOL simulations for 300kV and 200kV guns upper shields<br />
* [[Media:300kV_COMSOL_upper_shields.pdf]]<br />
* [[Media:200kV_COMSOL_upper_shield.pdf]]<br />
<br />
COMSOL modeling comparing CEBAF 130kV white insulator no shed versus Upgrade 200kV black insulator with shed.<br />
(Both guns biased at -200kV)<br />
* [[Media:COMSOL comparison CEBAF 130kV to 200kV upgrade.pdf]]<br />
* [[Media:COMSOL ceramic conductivity.pdf]]-</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:R30-4_Puck_and_Pierce_2.pptx&diff=30531File:R30-4 Puck and Pierce 2.pptx2024-01-17T13:55:51Z<p>Gabrielp: </p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=Jan_05_2024&diff=30492Jan 05 20242024-01-10T18:39:07Z<p>Gabrielp: </p>
<hr />
<div>==Updates from last meeting action items==<br />
<br />
* Gabriel: Working with Max, they benchmarked the CST model with POISSON in term of electric field distributions. [[Media:R30-4_Puck_and_Pierce.pptx]]<br />
* Alicia<br />
* Max: Evaluated cathode geometry ([[media:Gun status end of 2023.pdf|Max's summary document]])<br />
* Carlos<br />
<br />
==Items for discussion==<br />
<br />
* Modeling<br />
* Parameter space<br />
<br />
==Action items for next meeting==<br />
<br />
# Define electrode hole size. We chose Tee electrode diameter = 12.82 mm (0.5047 inches). The wafer is 15x15 mm. Joe said to choose the present R28-2 CEBAF gun electrode hole diameter. DONE<br />
# Max. Study focal length and spherical aberrations using field variations<br />
# Max and Gabriel (who is making the table?) Generate a table of parameter searches that includes: GaaAs plane position wrt to the electrode hole plane, Angle of GaAs plane, laser size, laser position, bunch charge.<br />
# Gabriel to work with Keith on finding the GaAs position range<br />
# Carlos to create wiki page (in progress)<br />
<br />
[https://wiki.jlab.org/ciswiki/index.php/200_kV_Polarized_Gun Return to 200 kV Gun page]</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:R30-4_Puck_and_Pierce.pptx&diff=30491File:R30-4 Puck and Pierce.pptx2024-01-10T18:38:02Z<p>Gabrielp: Gabrielp uploaded a new version of File:R30-4 Puck and Pierce.pptx</p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=Gabriel_Palacios-Serrano&diff=30489Gabriel Palacios-Serrano2024-01-10T13:50:59Z<p>Gabrielp: /* Gun related */</p>
<hr />
<div>*[https://drive.google.com/file/d/1FpWgPuf9JgBxLSfFNQE8-ZHq7Sncs88N/view PhD Dissertation defense March 23 2021]<br />
*[[Media:Gabriel's thesis outline draft Feb 2019 Rev00.docx]] <br />
<br />
------------------------------------------------------------<br />
== HV insulator for 500 kV: ==<br />
** Feb 2023 project update [[Media: 500_kV_project_update_Feb_2023.pptx]]<br />
** Exploring the use of the receptacle and the sizes of the SF6 spool [[Media:HV_insulator-1st_month.pptx]]<br />
** Jan 2023 summary [[Media:500kV Summary Jan 2023.png]]<br />
** Reached 315 kV [[Media:221220253.5.png]]<br />
<br />
<br />
==Snapshots of tracking at -200 kV, E_0 = 0.025 eV , r = 2 mm.==<br />
<br />
[[Image:200 kV white tracking.png|500px|thumb|left|T-cathode]] [[Image:Shield 8 tracking.png|500px|thumb|right|R28-2]] [[Image:R30-3 tracking.png|500px|thumb|left|R30-3]] [[Image:R30-4 tracking.png|500px|thumb|right|R30-4]] <br />
<br />
==18 in gun:==<br />
<br />
** Kick and angle after S&A found a 0.5 mm anode deviation [[Media: CIS-R30-3_slots_SURVEYED_CHECK_crashed.pptx]]<br />
** Hinged anode simulations<span class="dangerousLink">[https://wiki.jlab.org/ciswiki/images/f/fa/18_in_CEBAF_gun_Hinged_anode.pptx 18_in_CEBAF_gun_Hinged_anode.pptx][https://wiki.jlab.org/ciswiki/images/b/bf/18_in_CEBAF_gun_Hinged_anode_V2_with_shift_comparison.pptx 18_in_CEBAF_gun_Hinged_anode_V2_with_shift_comparison.pptx] [https://wiki.jlab.org/ciswiki/images/b/b4/R30-3_Shauns_hinged_anode.pptx R30-3_Shauns_hinged_anode.pptx][https://wiki.jlab.org/ciswiki/images/c/ce/R30-3_Shauns_hinged_anode_FINER_MESH.pptx R30-3_Shauns_hinged_anode_FINER_MESH.pptx][https://wiki.jlab.org/ciswiki/images/8/8f/R30-3_Shauns_hinged_anode_Found_X_ASYM_culprit.pptx R30-3_Shauns_hinged_anode_Found_X_ASYM_culprit.pptx] ''' ''' </span><br />
** Comparing Shields to answer the question: Can we use a smaller shield for op at -200 kV? [[Media: GTS_gun_with_CEBAF_anode_Shields.pptx]]<br />
** Exploring the anode location to cancel vertical kick [[Media:18in_gun_anode_studies.pptx]]<br />
<br />
== Wien filter stuff: ==<br />
'''12th International Particle Accelerator Conference - IPAC’21, May 24-28, 2021''' https://www.ipac21.org/#<br />
** Wien filter submitted after JLab internal review approval [[Media:Gabriel Palacios Wien filter Abstract IPAC21 FINAL.docx]]<br />
** Poster slides [[Media:IPAC_2021_poster_slides_final_Gabriel_Palacios.pptx]]<br />
<br />
Summary comparing GPT results with ideal E-field CST model compared to actual surveyed Vertical Wien assembly. <br />
The presentation also indicates the location in the O group drive of the various CST-generated E-field maps and GPT beam dynamics simulations.<br />
The Horizontal beam assembly electrode assembly is < 100 micron difference in pitch along the beam path. There was no need to generate a new field map. <br />
*[[Media:Vertical Wien GPT sims with spline electrodes Surveyed.pptx]]<br />
<br />
Spline electrode GPT simulations<br />
* [[Media:Wien_filter_GPT_7_Spline_electrode.pptx ]]<br />
<br />
Asymmetric bias GPT simulations<br />
* [[Media:Wien_filter_GPT_6.pptx ]]<br />
<br />
Inter-plate gap GPT simulations<br />
* [[Media:Wien_filter_GPT_5.pptx ]]<br />
<br />
Optics of the Wien filter, final<br />
* [[Media:Wien_filter_GPT_4_FINAL.pptx ]]<br />
<br />
Optics of the Wien filter, first try<br />
* [[Media:Wien_filter_GPT_3.pptx ]]<br />
<br />
Bolts and washers (metal and alumina sims).<br />
* [[Media:Wien_filter_bolts_and_washers.pptx ]]<br />
<br />
Exploring the reduction on the inter-plate gap.<br />
* [[Media:Wien_filter_shorter_plate_gaps.pptx ]]<br />
<br />
Double thickness mounting tab sims.<br />
* [[Media:Wien_filter_mounting_tab.pptx ]]<br />
<br />
Wien filter 6: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_6.pptx ]] <br />
<br />
Wien filter 4: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_4.pptx ]]<br />
<br />
Wien filter 3: I measured the vacuum lab's Wien filter and checked what we can scavenge for the 40 kV feedthrough version.<br />
* [[Media:Wien_filter_3.pptx ]]<br />
<br />
Wien filter 2: Simulation results for the 40 kV feedthrough for Wien filter at UITF.<br />
* [[Media:Wien_filter_2.pptx ]]<br />
<br />
Wien filter 1: Simulation results for the existing (05/22/2019) Wien filter at UITF.<br />
* [[Media:Wien_filter_1.pptx ]]<br />
<br />
------------------------------------------------------------<br />
<br />
== Gun related ==<br />
<br />
'''R30-4'''<br />
* [[Media:R30-4_Puck_and_Pierce.pptx]]<br />
<br />
'''Solidworks sumary'''<br />
<br />
* [[Media:GTS_gun_model_sumary.pdf]]<br />
* [[Media:T-cathode_gun_model_sumary.pdf]]<br />
<br />
<br />
'''Data taking runs''' <br />
<br />
UITF T-cathode electrode vs Small Shield: BPM data and centering in first lens at 200 [kV]<br />
* Rev5 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-8.pptx]]<br />
* Rev4 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-7.pptx]]<br />
* Rev3 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-6.pptx]]<br />
* Rev2 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-5.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-4.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-3.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV.pptx]]<br />
<br />
Log entry related to how the Laser XY stage moves along the X-axis<br />
* https://logbooks.jlab.org/entry/3704517<br />
<br />
Images of on axis QE run p2_2019-06-04_15_39 to calculate STEP-mm conversion factor<br />
* [[Media:QE scan fixed X 10000.png]]<br />
* [[Media:QE scan fixed Y 10000.png]]<br />
<br />
Ey difference for T-cathode and Small shield (From CST field maps)<br />
* [[Media:Ey difference for T-cathode and Small shield.PNG]]<br />
<br />
<br />
'''GPT, CST, COMSOL '''<br />
<br />
CST particle tracking of T-cathode, Small Shield and Big Shield @-200 kV<br />
* [[Media:Cathodes_particle_tracking_CST_1.pptx]]<br />
<br />
CORRECTION: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1_CORRECTED.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of GBacc on emittance. <br />
* [[Media:GTS_GPT_3.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of field map interpolation step-size on emittance. <br />
* [[Media:GTS_GPT_2.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -200 kV. This was produced using Yan's GTS parameters. We are trying to find out why is the measurements and simulated emittance so different. <br />
* [[Media:GTS_GPT_1.pptx]]<br />
<br />
THIS FILE HAS BEEN CORRECTED: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters. This is the same as the previous entry but shows extra slides with comparisons of the three cathodes wth one metric as requested by Matt. <br />
* [[Media:New_CEBAF_gun_CST_4_2.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:New_CEBAF_gun_CST_4.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV.<br />
* [[Media:New_CEBAF_gun_CST_3.pptx]]<br />
<br />
Test shields 1 to 7 simulations on CST for the -200 kV new CEBAF gun (and includes a bit of the GTS gun field maps at 200 kV w/small anode). <br />
* [[Media:New_CEBAF_gun_CST_2.pptx]]<br />
<br />
Test shields 1,2,3 & 4 simulations on CST for the -200 kV new CEBAF gun. <br />
* [[Media:New_CEBAF_gun_CST_1.pdf]] [[Media:New_CEBAF_gun_CST_1.pptx]]<br />
* [[Media:New_CEBAF_gun_CST_1_w-noshield.pdf]] [[Media:New_CEBAF_gun_CST_1_w-noshield.pptx]]<br />
<br />
Field maps for the -200 kV new CEBAF gun @-130 kV and -180 kV. <br />
* [[Media:Field_maps_for_the_new_CEBAF_gun_at_130_kV_and_180_kV.pdf]]<br />
<br />
Results for CST microwave studio simulations of the -300 kV GTS gun. <br />
* [[Media:GTS_CST_1.pdf]]<br />
<br />
Corrections on the simulation results for the -200 kV CEBAF gun paper. <br />
* [[Media:COMSOL_corrected.pdf]]<br />
<br />
Document with details on the Pierce geometry angle variations for the -300 kV GTS gun. <br />
* [[Media:GTS COMSOL 8.pdf]]<br />
<br />
COMSOL simulations for 300kV and 200kV guns upper shields<br />
* [[Media:300kV_COMSOL_upper_shields.pdf]]<br />
* [[Media:200kV_COMSOL_upper_shield.pdf]]<br />
<br />
COMSOL modeling comparing CEBAF 130kV white insulator no shed versus Upgrade 200kV black insulator with shed.<br />
(Both guns biased at -200kV)<br />
* [[Media:COMSOL comparison CEBAF 130kV to 200kV upgrade.pdf]]<br />
* [[Media:COMSOL ceramic conductivity.pdf]]-</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:R30-4_Puck_and_Pierce.pptx&diff=30488File:R30-4 Puck and Pierce.pptx2024-01-10T13:48:26Z<p>Gabrielp: </p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=CIS_Presentations&diff=30411CIS Presentations2023-12-11T15:05:54Z<p>Gabrielp: </p>
<hr />
<div>==2023==<br />
;Virtual Office of Nuclear Physics (NP) Principal Investigator (PI) Exchange meeting for Accelerator R&D award recipients. December 07, 2023<br />
* G. Palacios Serrano, C. Hernandez Garcia, M. Poelker: "High Voltage Insulators and Electrodes for 500 kV DC High Voltage Photogun with Inverted Insulator Design" [[media:Virtual_Office_of_NP_PI_Exchange_meeting_presentation.pptx]]<br />
<br />
; Summer Science Series, Jefferson Lab, July 25, 2023<br />
* J. Grames, "GaAs Polarized Electron Source: A brief tour" [[media:2023-SUMMER-PES-Grames.pptx]]<br />
<br />
; Jefferson Lab Accelerator Advisory Committee, March 8-10, 2023<br />
* M. Bruker, "Recent results from the UITF and a look forward" [[media:20230309_JLAAC_UITF-final20230304.pdf]]<br />
* S. Habet, "Positron collection scheme for Ce+BAF" [[media:Positron_collection_scheme_for_Ce+BAF.pptx | Positron_collection_scheme_for_Ce+BAF]]<br />
* M. Mamun, "Reaching Lower Pressure in Photoguns" [[media:JLAAC2023_Reaching Lower Pressure in Photoguns_Mamun.pdf]]<br />
* M.L. Stutzman "High Polarization Photocathode Research" [[media:HighPolarizationPhotocathodes.pdf]]<br />
* A. Ushakov, "Ce+BAF Concept and High Power Target" [[media:JLAAC2023-Ushakov-Ce+BAF_Concept_and_High_Power_Target.pptx]]<br />
<br />
<br />
==2022==<br />
;Mexican Community of Particle Accelerators, December 16 2022 via zoom "The summer program on accelerator physics between Mexico and JLab" (Spanish version)<br />
*[[Media:Veranos cientificos en JLab Carlos HG seminario CMAP Dec 16 2022.pptx]]<br />
<br />
;2022 DOE NP Accelerator R&D PI Meeting held on Nov 29 2022<br />
* C. Hernandez-Garcia, M. Poelker and G. Palacios-Serrano 500 kV insulator project [[Media:Hernandez-Garcia 500 kV Insulator Nov 29 2022 no backup slides.pptx]]<br />
* M. Poelker, M. Stutzman, E. Wang, S. Marsillac "Photocathodes with 90% polarization and QE greater than 1% for DOE NP" [[media:Photocathodes with 90% polarization and QE greater than 1% for DOE NP_final.pptx]]<br />
* M.L. Stutzman, C. Palmstrom and A. Engel, "Strained Superlattice Photocathodes with CBE" [[media:CBESSL.pdf]]<br />
<br />
; AVS Symposium <br />
* M.L. Stutzman, "Jefferson Lab Injector Beamline Upgrade" Pittsburgh PA November 7, 2022 [[media:AVS2023.pdf]]<br />
<br />
; Hall B CLAS Collaboration Meeting (30th Anniversary)<br />
* J. Grames, "Ce+BAF : Positron Beams at Jefferson Lab", Jefferson Lab Nov. 1-4, 2022 [[media:221103-CLAS-GRAMES.pptx]]<br />
<br />
; CIS Grad Student Presentations, August 23, 2022<br />
* A. Rahman, "Study of Quantum Efficiency Enhancement in Different Mie-type Nanostructured NEA GaAs Photocathode" [[media:Presentation_Aug23_2022_Azziz.pdf]]<br />
<br />
; CIS Grad Student Presentations, July 26, 2022<br />
* S. Habet, "Concept of a polarized positron source at CEBAF" [[media:220726_Sami_Habet_PhD.pdf]]<br />
<br />
; Summer Science Series, Jefferson Lab, July xx, 2022<br />
* M.L. Stutzman "Extreme High Vacuum" [[media:SummerXHV2022.pdf]]<br />
<br />
; Summer Science Series, Jefferson Lab, July 12, 2022<br />
* J. Grames, "GaAs Polarized Electron Source: A brief tour" (short version) [[media:2022-SUMMER-PES-Grames.pptx]]<br />
<br />
; GTS beam kick study presented in B-Team meeting, March 8, 2022<br />
* Md. A. Mamun, S.A.K. Wijethunga, R. Suleiman, C. Hernandez-Garcia, B. Bullard, J. R. Delayen, J. Grames, G. A. Krafft, G. Palacios-Serrano, M. Poelker<br />
[[media:2022_03_08_Beam kick study with GTS modified gun_presented at B-Team meeting_Mamun.pdf]]<br />
<br />
; Lawrence Berkley Lab Vacuum Series Talk April 2022<br />
* Marcy Stutzman "Ultra and Extreme High Vacuum" [[media:UHV_XHV_LBL.pdf]]<br />
<br />
; CIS Presentations to David Dean, March 4, 2022<br />
* J. Grames, M. Stutzman, C. Hernandez-Garcia, R. Suleiman [[media:CIS_DavidDean_FINAL.pdf]]<br />
<br />
; FRIB/MSU seminar series (on line), February 11, 2022, [https://frib.msu.edu/science/ase/seminars.html ACCELERATOR PHYSICS AND ENGINEERING SEMINARS]<br />
* Poelker UITF [[media:MSU FRIB UITF presentation.pdf]]<br />
<br />
; UAM-AZC. Mexico City, Mexico (online). March the 10th, 2022. <br />
* G. Palacios. "Insulators and electrode for a 500 kV photoelectron gun with inverted insulator"<br />
<br />
;FRIB/MSU seminar series (online), January 28th, 2022, [https://frib.msu.edu/science/ase/seminars.html ACCELERATOR PHYSICS AND ENGINEERING SEMINARS]<br />
* C. Hernandez-Garcia, "HV technology and its application in accelerators"<br />
<br />
; Jefferson Lab Accelerator Seminar, Jan 13th, 2022:<br />
* R. Suleiman, "EDM Measurement in Small Rings", [[media:EDM_SmallRings_Suleiman_AccSeminar_Jan2022.pdf]]<br />
<br />
==2021==<br />
; IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Dec 14th, 2021<br />
* Carlos Hernandez-Garcia1, Gabriel Palacios-Serrano, et al. "Inverted Geometry Ceramic Insulators in High Voltage DC Electron Guns for Accelerators"<br />
<br />
; VCU Colloquium December 3, 2021<br />
* M.L. Stutzman "Photocathodes for Polarized Electron Beams at Jefferson Lab" [[media: Stutzman-VCU-Colloquium.pdf]]<br />
<br />
; Jefferson Lab Accelerator Advisory Committee<br />
* J. Grames (draft v3) [[media:JLAAC-2021-Grames-Positrons-v3.pptx]]<br />
* M.L. Stutzman (final) [[media:JLAAC-2021-Stutzman-CBESSL.pdf]]<br />
<br />
; DOE NP Accelerator R&D and AI-ML PI Exchange Meeting, November 30, 2021<br />
* M.L. Stutzman, "Investigation into chemical beam epitaxy (CBE) for high polarization strained superlattice GaAs/GaAsP photocathodes" [[media:DOE-PI-2021-Stutzman-CBESSL.pdf]]<br />
* M. Poelker and E. Wang<br />
* C.Hernandez-Garcia<br />
* R. Suleiman<br />
<br />
; Polarized Photocathodes for Photoinjectors (P3) Workshop, November 10, 2021<br />
* M.L. Stutzman, "Strained Superlattice GaAs/GaAsP Supplier overview": [[media:StutzmanP3.pdf]]<br />
<br />
; EIC Accelerator Partners Workshop, October 27, 2021<br />
* M.L. Stutzman, C. Hetzel "Interaction Region Synchrotron Radiation and Vacuum (details)" [[media:EIR_IR_Triumf.pdf]]<br />
<br />
; AVS67 - AVS International Symposium October 25-28, 2021.<br />
* M.L. Stutzman, "Jefferson Lab Injector Beamline Upgrade": [[media:AVS2021.pdf]]<br />
<br />
; EIC OPA Review, October 19-21, 2021<br />
* M.L. Stutzman, C. Hetzel "Interaction Region Synchrotron Radiation and Vacuum (overview)" [[media:EIR_IR_OPA.pdf]]<br />
<br />
; SPIN 2021 - 24th International Spin Symposium, Japan, October 18-22, 2021<br />
* R. Suleiman, "EDM in Small Rings": [[media:EDM_SmallRings_Suleiman_Spin2021.pdf]]<br />
<br />
; 2021 LDRD Jamboree<br />
* [https://urldefense.proofpoint.com/v2/url?u=https-3A__primetime.bluejeans.com_a2m_events_playback_6fd77d6f-2Dbeef-2D45bc-2D8a61-2Dd20e000ff7c6&d=DwMCAg&c=CJqEzB1piLOyyvZjb8YUQw&r=0OMOtlswNxL2CZUVOc0o6g&m=ri8x-UeH_Qh4rSZbsVWByjpzevjynK999OFQo7QcMX0&s=1wHEfl-Pcdiq3DchreOC7LPa4Buz77WxJJBIkXpQu74&e= Jamboree video]<br />
<br />
* J. Grames, "LDRD #2104 - A polarized positron source for our future" [[media:Grames_Jamboree_FINAL.pptx|Presentation]]<br />
<br />
; Low carbon steel vacuum studies<br />
* Proposal for a graduate student [[media:low carbon steel vacuum study project.pptx|Slides]]<br />
<br />
; Summer Science Series, Jefferson Lab, July 22, 2021<br />
* M.L. Stutzman "Extreme High Vacuum" [[media:2021-Summer-XHV.pdf]]<br />
<br />
; Summer Science Series, Jefferson Lab, June 17, 2021<br />
* J. Grames, "GaAs Polarized Electron Source: A brief tour" (short version) [[media:2021-SUMMER-PES-Grames.pptx]]<br />
<br />
;USPAS lectures in Spin Dynamics, June 10, 2021<br />
* J. Grames, "GaAs Polarized Electron Source: A brief tour" (long version) [[Media:2021-USPAS-PES-Grames.pptx]]<br />
<br />
; IPAC 2021, May 24th - 28th, 2021. <br />
* Gabriel Palacios-Serrano, Carlos Hernandez-Garcia1, et al."HIGH VOLTAGE DESIGN AND EVALUATION OF WIEN FILTERS FOR THE CEBAF 200 keV INJECTOR UPGRADE*"<br />
<br />
; AVS Mid-Atlantic Chapter Meeting, Virtual, April 22, 2021 "Electron Ion Collider Vacuum Considerations"<br />
* M.L. Stutzman & Collaborators [[media:EIC_Vac_AVSM-A.pdf]]<br />
<br />
==2020==<br />
; JLAAC talks from Matt, Joe, Marcy and Carlos, October 21-23, 2020<br />
* M. Poelker "UITF Commissioning" [[media:UITF Commissioning_poelker.pptx]]<br />
* M. Stutzman and C. Hernandez-Garcia, "JLab Source Group DOE FOA awards" [[media:Photocathodes and 500 kV gun.pptx]]<br />
* J. Grames, "Positron R&D Update" [[media:Positron R&D at JLab.pptx]]<br />
<br />
; Summer Science Series, Jefferson Lab, June 18, 2020<br />
* J. Grames, "CEBAF Polarized Electron Source" [[media:200616_SummerSeries_Grames_FINAL_750dpi.pptx]]<br />
<br />
;Jefferson Lab Accelerator Physics Seminar, February 20, 2020<br />
*Carlos Hernandez-Garcia "GTS multi-year program results 2016-2019" [[Media:Carlos' GTS gun talk Acc Seminar Feb 20 2020 final.pptx]]<br />
<br />
==2019==<br />
; Jefferson Lab Accererlator Advisory Committee, JLAAC, October 22 - 24, 2019<br />
* Matt Poelker "UITF Update" [[media:JLAAC poelker UITF first draft.pptx]]<br />
<br />
; International Vacuum Congress, Malmo Sweden July 5 2019<br />
* Marcy Stutzman "Vacuum System Design and Modeling for the Jefferson Lab Electron Ion Collider Interaction Region" [[media:IVC-21Stutzman.pptx]] [[media:IVC-21Stutzman.pdf]]<br />
<br />
; Summer Science Series, Jefferson Lab, July30, 2019<br />
* M.L. Stutzman, "Extreme High Vacuum" [[media:190730_XHV.pptx]]<br />
<br />
; Summer Science Series, Jefferson Lab, June27, 2019<br />
* J. Grames, "CEBAF Polarized Electron Source" [[media:190627_SummerSeries_Grames_FINAL.pptx]] (92MB) and smaller [[media:190627_SummerSeries_Grames_FINAL_750dpi.pptx]] (18 MB 750dpi)<br />
<br />
; High Brightness Beam Workshop, Crete, Greece April 8-12 2019<br />
* Carlos' final slides for talk [[Media:Magnetized_eBeam_HBB_2019_final.pptx]]<br />
* Carlos' slides for dry run Invited talk is 25 minutes long including 5 minutes for Q&A [[Media:Magnetized_eBeam_HBB_2019_revised.pptx]]<br />
<br />
; KEK visit to JLab, February 25 2019<br />
* Draft slides for discussion [[media:JLAB-KEK_Grames_Final.pptx]]<br />
* Draft slides for discussion [[media:JLAB-KEK_Grames_v1.pptx]]<br />
* [[Media:Our 400kV gun R&D plan for Joe KEK visit to JLab Feb 25 2019.pptx]]<br />
<br />
; [https://prex.jlab.org/cgi-bin/DocDB/private/DisplayMeeting?conferenceid=8 PREX/CREX Collaborating Meeting, February 15, 2019] (use CUE credentials to login)<br />
* J. Grames slides for meeting [[media:190215_PREX_CREX_Grames.pptx]]<br />
<br />
; Hall A Collaboration Meeting, January 2019<br />
* Slides for Yves Hall A Collaboration meeting [[media:HallA_Collaboration_Meeting_30Jan2019.pptx]]<br />
<br />
==2018==<br />
; EIC Collaboration meeting, October 29- November 1 2018, Jefferson Lab<br />
* M.A. Mamun, "Magnetized Electron Source Development" [[media:2018_CM_EIC_JLab Magnetized Gun_mamun.pdf]]<br />
<br />
; Jefferson Lab Accelerator Advisory Committee Review, October 7-9, 2018, Jefferson Lab<br />
* J. Grames final slides [[media:JLAAC_Grames_FINAL.pptx]]<br />
* M.A. Mamun, "JLEIC Magnetized Beam (LDRD)" [[media:2018_JLAAC mamun.pdf]]<br />
<br />
; Accelerator All Hands Meeting<br />
* M. Poelker draft slides for CIS [[media:Accel All Hands_poelker_CIS_draft.pptx]]<br />
<br />
; Invitation to speak at BNL, August 8, 2018 (flight was cancelled, didn't present at BNL)<br />
* M. Poelker, "The Problems with Photoguns" [[media:problems with photoguns.pptx]], [[media:problems with photoguns version2.pptx]]<br />
<br />
;Summer Science Series, Jefferson Lab, July 31, 2018<br />
* M.L. Stutzman, "Extreme High Vacuum" [[media:Stutzman_SULI_2018.pptx]]<br />
<br />
; Ops Training - July 11, 2018<br />
* J. Grames, "Injector Upgrade Status - SAD 2018: Gun2" [[media:InjectorUpgradeStatus_SAD2018.pptx]]<br />
<br />
; Summer Science Series, Jefferson Lab, July 5, 2018<br />
* J. Grames, "CEBAF Polarized Electron Source" [[media:180705_SummerSeries_Grames_FINAL.pptx]]<br />
<br />
; EVC-15 conference, "Combining NEG pumps and an XHV BNNT Cryopump" Geneva, June 2018<br />
*M.L. Stutzman [[media:EVC-15_Stutzman.pdf]]<br />
<br />
; 200 keV Beam Operations Presentation<br />
* J. Grames [[media:200KV_OPS_v2.pptx]]<br />
<br />
;PREX/CREX Collaboration Meeting February 25-26, 2018<br />
* J. Grames [[media:180226_PREXCREX_Grames_v2.pptx]]<br />
* [https://prex.jlab.org/cgi-bin/DocDB/private/DisplayMeeting?conferenceid=4 Meeting link]<br />
<br />
==2017==<br />
;TRIUMF, invited to present CIS work on inverted insulator photo guns<br />
* Summary TRIUMF visit [[Media:TRIUMF pics.pptx]]<br />
* Carlos [[Media:Carlos JLab Inverted guns talk at TRIUMF Nov 21 2017 final.pptx]]<br />
; EIC Collaboration meeting, October 10-12, 2018, BNL, Long Island, NY<br />
* M.A. Mamun, "Magnetized Electron Source Development" [[media:EIC-CM_BNL_October_10-12_2017_Presentation_Magnetized_Beam_Mamun_Final.pdf]]<br />
<br />
;PREX/CREX Collaboration Meeting Oct 1-2, 2017<br />
* J. Grames [[media:171002_PREXCREX_Grames.pptx]]<br />
* [https://prex.jlab.org/cgi-bin/DocDB/public/DisplayMeeting?conferenceid=2 Meeting link]<br />
<br />
;JLAAC, September 13-15, 2017<br />
* J. Grames, "Milliampere beam studies using high polarization photocathodes" [[media:JLAAC_Grames_final.pptx]]<br />
* Carlos Hernandez-Garcia, "JLAAC 300kV gun version - FINAL" [[Media:JLAAC_Carlos_v5-final.pptx]]<br />
* M.A. Mamun, "JLAAC magnetized beam" [[media:JLAAC_Mamun_v4.pptx]]<br />
* Poelker, "JLAAC Injectors and Sources" [[media:JLAAC_Poelker_final.pptx]] <br />
<br />
;Science and Technology Review, Jefferson Lab, July 24-26, 2017<br />
* R. Suleiman, "Magnetized Electron Source, LDRD" [[media:S&T_Review_July_24-26_2017_Presentation_Magnetized_LDRD_Suleiman.pptx]]<br />
* M. Poelker, "INJECTOR R&D and Upgraded Injector Test Facility" [[media:poelker S&T review, July 24-26, 2017.pptx]]<br />
<br />
;Summer Science Series, Jefferson Lab, July 11, 2017<br />
* J. Grames, "CEBAF Polarized Electron Source" [[media:170711_SummerSeries_Grames.pptx]]<br />
<br />
;Moller Collaboration Meeting April 21-22, 2017<br />
* [https://hallaweb.jlab.org/doc-private/DisplayMeeting?conferenceid=11 Program link (user=moller, pass=)]<br />
* [[media:170421_MOLLER_Poelker.pptx]]<br />
::Design study of beam position monitors for measuring second-order moments of charged particle beams [[media:PhysRevSTAB.15.012801.pdf]]<br />
::Characterization of Beam Position Monitors for Measurement of Second Moment:[[media:PAC95_SJRussell.pdf]]<br />
<br />
;PREX/CREX Collaboration Meeting March 3-4, 2017<br />
*[https://prex.jlab.org/wiki/index.php/Feb2017_Collaboration_Meeting Program link],<br />
*[[media:170303_PREXCREX_Grames_FINAL.pptx]]<br />
<br />
'''Summary of GTS progress in 2016 and early activities in 2017, talk presented at JLEIC R&D weekly meeting, JLab Jan 26 2017'''<br />
*[[Media:GTS update for JLEIC meeting Jan 26 2017.pptx]]<br />
<br />
== 2016 ==<br />
;A story of CEBAF photocathode life(time) [on HV], CEBAF Scheduling Meeting Beam Studies Report 12/14/16<br />
* [[Media:161214_Wed130.pptx]]<br />
<br />
;Moeller Collaboration Meeting, November 11-12, 2016<br />
* [[Media:161111_Moller_v1.pptx]] [[Media:161111_Moller_v2.pptx]]<br />
<br />
;AVS 2016, Nashville, TN, November 6-11 2016<br />
* Marcy Stutzman, "Simulated and Measured Extreme High Vacuum in the Jefferson Lab Polarized Electron Source" [[media:StutzmanAVS2016.pptx]]<br />
<br />
;IVC20, Busan, Korea, 21-26 August 2016<br />
* Marcy Stutzman, "Simulated and Measured Extreme High Vacuum in the Jefferson Lab Polarized Electron Source" [[media:StutzmanIVC20.pdf]]<br />
<br />
;77th IUVSTA Workshop on Surface Processes, Fuefuki, Japan, 17-21 August 2016<br />
* Marcy Stutzman, Gas Dynamics and Vacuum Technology of Cryogenic Vacuum Systems, , "Investigations of cryopumping for Extreme High vacuum systems" [[media:IUVSTA77Stutzman.pdf]]<br />
<br />
;ECT Workshop: Physics beyond the standard model and precision nucleon structure measurements with parity-violating electron scattering, Trento, Italy Aug. 1-5, 2016<br />
* Arne Freyberger, Operations Dept. Accelerator Division "CEBAF Polarized Beam for Parity Violation Experiments in the 12 GeV era", [[media:Freyberger_ECT Parity Violation Workshop_12 GeV CEBAF.pdf]]<br />
<br />
;Summer Science Series, Jefferson Lab, July 22, 2016<br />
* Marcy Stutzman, "Extreme High Vacuum" [[media:Stutzman_SULI_REU_2016.pptx]]<br />
<br />
;Summer Science Series, Jefferson Lab, July 7, 2016<br />
* J. Grames, "CEBAF Polarized Electron Source" [[media:160707_SummerSeries_Grames.pptx]]<br />
<br />
;PREx-II Collaboration Meeting, February 26, 2016<br />
* M. Poelker and J. Grames, "CEBAF Source and Injector Status" [[media:160226_PREx_Grames.pptx]] [[media:160226_PREx_Grames.pdf]]<br />
<br />
== 2015 ==<br />
;JLab/ILC Polarized Electron Source - Nomura Research Institute Visit, 11/13/2015 [[media:JLab_ILC gun_Nomura Research Institute visit.pptx]] <br />
<br />
;Visit to COSY/Juelich to discuss high voltage issues for a possible ring EDM measurement<br />
* M. Poelker, "High Voltage Studies: Can R&D towards building a high voltage gun help the ring EDM effort?" [[media:HV studies summary_talk from COSY Juelich.pptx]]<br />
<br />
'''AVS 2015, 19 October 2015'''<br />
* M.L.Stutzman, "XHV Cryopump Performance and Limitations for the Jefferson Lab Polarized Electron Source" [[media:StutzmanAVS2015.pptx]]<br />
<br />
'''Daresbury International Workshop on Functional Surface Coatings and Treatments for UHV and XHV, 28 Sept 2015'''<br />
* M.L.Stutzman, "DC sputtered NEG coatings for non-uniformly shaped chambers" [[media:XHV_Coatings_Stutzman.pptx]]<br />
<br />
;IPAC poster "Vacuum Characterization and Improvements for the Jefferson Lab Polarized Electron Source"<br />
* M.L. Stutzman, P.A. Adderley, M.Poelker and Md. A. Mamun, [[media:Stutzman_IPAC2015.pptx]]<br />
<br />
;Summer Science Series, Jefferson Lab, July 30, 2015<br />
* M.L. Stutzman, "Extreme High Vacuum: why and how (Summer Series)" [[media:Stutzman_SULI_REU_2015.pptx]]<br />
<br />
;Summer Science Series, Jefferson Lab, July 9, 2015<br />
* J. Grames, "Electrons Sources at Jefferson Lab" [[media:2015_SummerSeries_Grames.pptx]]<br />
<br />
;Center for Accelerator Science Seminar, Old Dominion University, April 2, 2015<br />
* J. Grames, ''Positron Applications, Sources and PEPPo'', [[media:Grames_ODU_150402.pdf]] [[media:Grames_ODU_150402.pptx]]<br />
<br />
;Moeller Collaboration Meeting, January 23, 2015<br />
* M. Poelker, [[Media:moller collab mtg_poelker_1_23_15.pptx]]<br />
<br />
== 2014 ==<br />
;AVS2014, 12November2014 <br />
* M.L.Stutzman, P.Adderley, Md.A.Mamun, A.A.Elmustafa,M.Poelker "Near-XHV pressure characterization for the Jefferson Lab Polarized Electron Source", [[Media:StutzmanAVS2014.pptx]]<br />
<br />
;Summer Science Series, Jefferson Lab, July 29, 2014<br />
* M.L. Stutzman, "Extreme High Vacuum for SULI REU" * [[Media:2014_SummerSeries_XHV_Stutzman.pptx]]<br />
<br />
;Summer Science Series, Jefferson Lab, July 17, 2014<br />
* J. Grames, "Electrons Sources" [[Media:2014_SummerSeries_Grames.pptx]] [[Media:2014_SummerSeries_Grames.pdf]] <br />
<br />
;TRIUMF Accelerator Seminar, June 4, 2014<br />
* R. Suleiman, "Measurement of <sup>16</sup>O(γ,α)<sup>12</sup>C with Bubble Chamber and Bremsstrahlung Beam at Jefferson Lab Injector"<br />
* Abstract: [[media:Abstract_TRIUMF_Seminar.pdf]] [[media:Abstract_TRIUMF_Seminar.docx]]<br />
* Presentation: [[media:TRIUMF_Seminar_Suleiman_June_2014.pdf]] [[media:TRIUMF_Seminar_Suleiman_June_2014.pptx]]<br />
<br />
;American Vacuum Society Mid-Atlantic Meeting, May 15, 2014'''<br />
* M.L. Stutzman, P. Adderley, J. Clark, S. Covert, C. Hernandez-Garcia, J. Grames, J. Hansknecht, M. Poelker, R. Suleiman, "High polarization photocathodes" [[Media:AVS_MA_NIST_May2014_Final.pptx]]<br />
<br />
;Moeller Collaboration Meeting, May 8, 2014<br />
* M. Poelker [[Media:moller collab mtg_poelker_5_8_14.pptx]]<br />
<br />
== 2013 ==<br />
* M. Poelker, "High Current Polarized Electron Source", a workshop at Daresbury related to LHeC, 6.5mA polarized beam at 160pC<br />
Presentation: [[media:LHeC workshop at Daresbury_Poelker_Jan. 22 – 23, 2013.pptx]]<br />
<br />
== 2012 ==<br />
;ILC R&D talk_ 200 kV inverted gun<br />
* M. Poelker [[media:R&D status ILC 200 kV inverted gun.pptx]]<br />
<br />
== 2011 ==<br />
;ILC Representative visit Jan. 5-6, 2011 - Building a Higher Voltage Polarized e-Source:The CEBAF/ILC 200kV Inverted Gun<br />
* M. Poelker presentation: [[media:JLab ILC inverted gun_status.pptx]] <br />
<br />
;TRIUMF Accelerator Seminar, January 19, 2011<br />
* R. Suleiman, "Jefferson Lab Polarized Photogun"<br />
Presentation: [[media:TRIUMF_Seminar_Suleiman_Jan_2011.pdf]] [[media:TRIUMF_Seminar_Suleiman_Jan_2011.pptx]]<br />
<br />
<br />
== 2010 ==<br />
<br />
== 2009 ==<br />
<br />
== 2008 ==<br />
<br />
== 2007 ==<br />
; ILC e-Source Kick OFF meeting, SLAC, September 24-25, 2007<br />
* Presentation, M. Poelker [[media:eSource KOM presentation_ILC inverted gun.pptx]]<br />
<br />
== 2006 ==<br />
<br />
== 2005 == <br />
<br />
== 2004 ==<br />
<br />
== 2003 ==<br />
<br />
== 2002 ==<br />
<br />
== 2001 ==<br />
<br />
== 2000 ==<br />
<br />
== 1999 ==<br />
<br />
== 1998 ==<br />
<br />
== 1997 == <br />
<br />
== 1996 ==<br />
<br />
== 1995 ==<br />
<br />
== 1994 ==<br />
<br />
== 1993 ==<br />
<br />
== 1992 ==<br />
<br />
== 1991 - 1989 ==<br />
<br />
== Other ==</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:Virtual_Office_of_NP_PI_Exchange_meeting_presentation.pptx&diff=30410File:Virtual Office of NP PI Exchange meeting presentation.pptx2023-12-11T15:05:05Z<p>Gabrielp: </p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=Gabriel_Palacios-Serrano&diff=30021Gabriel Palacios-Serrano2023-07-19T23:55:48Z<p>Gabrielp: </p>
<hr />
<div>*[https://drive.google.com/file/d/1FpWgPuf9JgBxLSfFNQE8-ZHq7Sncs88N/view PhD Dissertation defense March 23 2021]<br />
*[[Media:Gabriel's thesis outline draft Feb 2019 Rev00.docx]] <br />
<br />
------------------------------------------------------------<br />
== HV insulator for 500 kV: ==<br />
** Feb 2023 project update [[Media: 500_kV_project_update_Feb_2023.pptx]]<br />
** Exploring the use of the receptacle and the sizes of the SF6 spool [[Media:HV_insulator-1st_month.pptx]]<br />
** Jan 2023 summary [[Media:500kV Summary Jan 2023.png]]<br />
** Reached 315 kV [[Media:221220253.5.png]]<br />
<br />
<br />
==Snapshots of tracking at -200 kV, E_0 = 0.025 eV , r = 2 mm.==<br />
<br />
[[Image:200 kV white tracking.png|500px|thumb|left|T-cathode]] [[Image:Shield 8 tracking.png|500px|thumb|right|R28-2]] [[Image:R30-3 tracking.png|500px|thumb|left|R30-3]] [[Image:R30-4 tracking.png|500px|thumb|right|R30-4]] <br />
<br />
==18 in gun:==<br />
<br />
** Kick and angle after S&A found a 0.5 mm anode deviation [[Media: CIS-R30-3_slots_SURVEYED_CHECK_crashed.pptx]]<br />
** Hinged anode simulations<span class="dangerousLink">[https://wiki.jlab.org/ciswiki/images/f/fa/18_in_CEBAF_gun_Hinged_anode.pptx 18_in_CEBAF_gun_Hinged_anode.pptx][https://wiki.jlab.org/ciswiki/images/b/bf/18_in_CEBAF_gun_Hinged_anode_V2_with_shift_comparison.pptx 18_in_CEBAF_gun_Hinged_anode_V2_with_shift_comparison.pptx] [https://wiki.jlab.org/ciswiki/images/b/b4/R30-3_Shauns_hinged_anode.pptx R30-3_Shauns_hinged_anode.pptx][https://wiki.jlab.org/ciswiki/images/c/ce/R30-3_Shauns_hinged_anode_FINER_MESH.pptx R30-3_Shauns_hinged_anode_FINER_MESH.pptx][https://wiki.jlab.org/ciswiki/images/8/8f/R30-3_Shauns_hinged_anode_Found_X_ASYM_culprit.pptx R30-3_Shauns_hinged_anode_Found_X_ASYM_culprit.pptx] ''' ''' </span><br />
** Comparing Shields to answer the question: Can we use a smaller shield for op at -200 kV? [[Media: GTS_gun_with_CEBAF_anode_Shields.pptx]]<br />
** Exploring the anode location to cancel vertical kick [[Media:18in_gun_anode_studies.pptx]]<br />
<br />
== Wien filter stuff: ==<br />
'''12th International Particle Accelerator Conference - IPAC’21, May 24-28, 2021''' https://www.ipac21.org/#<br />
** Wien filter submitted after JLab internal review approval [[Media:Gabriel Palacios Wien filter Abstract IPAC21 FINAL.docx]]<br />
** Poster slides [[Media:IPAC_2021_poster_slides_final_Gabriel_Palacios.pptx]]<br />
<br />
Summary comparing GPT results with ideal E-field CST model compared to actual surveyed Vertical Wien assembly. <br />
The presentation also indicates the location in the O group drive of the various CST-generated E-field maps and GPT beam dynamics simulations.<br />
The Horizontal beam assembly electrode assembly is < 100 micron difference in pitch along the beam path. There was no need to generate a new field map. <br />
*[[Media:Vertical Wien GPT sims with spline electrodes Surveyed.pptx]]<br />
<br />
Spline electrode GPT simulations<br />
* [[Media:Wien_filter_GPT_7_Spline_electrode.pptx ]]<br />
<br />
Asymmetric bias GPT simulations<br />
* [[Media:Wien_filter_GPT_6.pptx ]]<br />
<br />
Inter-plate gap GPT simulations<br />
* [[Media:Wien_filter_GPT_5.pptx ]]<br />
<br />
Optics of the Wien filter, final<br />
* [[Media:Wien_filter_GPT_4_FINAL.pptx ]]<br />
<br />
Optics of the Wien filter, first try<br />
* [[Media:Wien_filter_GPT_3.pptx ]]<br />
<br />
Bolts and washers (metal and alumina sims).<br />
* [[Media:Wien_filter_bolts_and_washers.pptx ]]<br />
<br />
Exploring the reduction on the inter-plate gap.<br />
* [[Media:Wien_filter_shorter_plate_gaps.pptx ]]<br />
<br />
Double thickness mounting tab sims.<br />
* [[Media:Wien_filter_mounting_tab.pptx ]]<br />
<br />
Wien filter 6: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_6.pptx ]] <br />
<br />
Wien filter 4: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_4.pptx ]]<br />
<br />
Wien filter 3: I measured the vacuum lab's Wien filter and checked what we can scavenge for the 40 kV feedthrough version.<br />
* [[Media:Wien_filter_3.pptx ]]<br />
<br />
Wien filter 2: Simulation results for the 40 kV feedthrough for Wien filter at UITF.<br />
* [[Media:Wien_filter_2.pptx ]]<br />
<br />
Wien filter 1: Simulation results for the existing (05/22/2019) Wien filter at UITF.<br />
* [[Media:Wien_filter_1.pptx ]]<br />
<br />
------------------------------------------------------------<br />
<br />
== Gun related ==<br />
<br />
'''Solidworks sumary'''<br />
<br />
* [[Media:GTS_gun_model_sumary.pdf]]<br />
* [[Media:T-cathode_gun_model_sumary.pdf]]<br />
<br />
<br />
'''Data taking runs''' <br />
<br />
UITF T-cathode electrode vs Small Shield: BPM data and centering in first lens at 200 [kV]<br />
* Rev5 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-8.pptx]]<br />
* Rev4 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-7.pptx]]<br />
* Rev3 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-6.pptx]]<br />
* Rev2 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-5.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-4.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-3.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV.pptx]]<br />
<br />
Log entry related to how the Laser XY stage moves along the X-axis<br />
* https://logbooks.jlab.org/entry/3704517<br />
<br />
Images of on axis QE run p2_2019-06-04_15_39 to calculate STEP-mm conversion factor<br />
* [[Media:QE scan fixed X 10000.png]]<br />
* [[Media:QE scan fixed Y 10000.png]]<br />
<br />
Ey difference for T-cathode and Small shield (From CST field maps)<br />
* [[Media:Ey difference for T-cathode and Small shield.PNG]]<br />
<br />
<br />
'''GPT, CST, COMSOL '''<br />
<br />
CST particle tracking of T-cathode, Small Shield and Big Shield @-200 kV<br />
* [[Media:Cathodes_particle_tracking_CST_1.pptx]]<br />
<br />
CORRECTION: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1_CORRECTED.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of GBacc on emittance. <br />
* [[Media:GTS_GPT_3.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of field map interpolation step-size on emittance. <br />
* [[Media:GTS_GPT_2.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -200 kV. This was produced using Yan's GTS parameters. We are trying to find out why is the measurements and simulated emittance so different. <br />
* [[Media:GTS_GPT_1.pptx]]<br />
<br />
THIS FILE HAS BEEN CORRECTED: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters. This is the same as the previous entry but shows extra slides with comparisons of the three cathodes wth one metric as requested by Matt. <br />
* [[Media:New_CEBAF_gun_CST_4_2.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:New_CEBAF_gun_CST_4.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV.<br />
* [[Media:New_CEBAF_gun_CST_3.pptx]]<br />
<br />
Test shields 1 to 7 simulations on CST for the -200 kV new CEBAF gun (and includes a bit of the GTS gun field maps at 200 kV w/small anode). <br />
* [[Media:New_CEBAF_gun_CST_2.pptx]]<br />
<br />
Test shields 1,2,3 & 4 simulations on CST for the -200 kV new CEBAF gun. <br />
* [[Media:New_CEBAF_gun_CST_1.pdf]] [[Media:New_CEBAF_gun_CST_1.pptx]]<br />
* [[Media:New_CEBAF_gun_CST_1_w-noshield.pdf]] [[Media:New_CEBAF_gun_CST_1_w-noshield.pptx]]<br />
<br />
Field maps for the -200 kV new CEBAF gun @-130 kV and -180 kV. <br />
* [[Media:Field_maps_for_the_new_CEBAF_gun_at_130_kV_and_180_kV.pdf]]<br />
<br />
Results for CST microwave studio simulations of the -300 kV GTS gun. <br />
* [[Media:GTS_CST_1.pdf]]<br />
<br />
Corrections on the simulation results for the -200 kV CEBAF gun paper. <br />
* [[Media:COMSOL_corrected.pdf]]<br />
<br />
Document with details on the Pierce geometry angle variations for the -300 kV GTS gun. <br />
* [[Media:GTS COMSOL 8.pdf]]<br />
<br />
COMSOL simulations for 300kV and 200kV guns upper shields<br />
* [[Media:300kV_COMSOL_upper_shields.pdf]]<br />
* [[Media:200kV_COMSOL_upper_shield.pdf]]<br />
<br />
COMSOL modeling comparing CEBAF 130kV white insulator no shed versus Upgrade 200kV black insulator with shed.<br />
(Both guns biased at -200kV)<br />
* [[Media:COMSOL comparison CEBAF 130kV to 200kV upgrade.pdf]]<br />
* [[Media:COMSOL ceramic conductivity.pdf]]-</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=Gabriel_Palacios-Serrano&diff=30020Gabriel Palacios-Serrano2023-07-19T23:48:41Z<p>Gabrielp: </p>
<hr />
<div>*[https://drive.google.com/file/d/1FpWgPuf9JgBxLSfFNQE8-ZHq7Sncs88N/view PhD Dissertation defense March 23 2021]<br />
*[[Media:Gabriel's thesis outline draft Feb 2019 Rev00.docx]] <br />
<br />
------------------------------------------------------------<br />
== HV insulator for 500 kV: ==<br />
** Feb 2023 project update [[Media: 500_kV_project_update_Feb_2023.pptx]]<br />
** Exploring the use of the receptacle and the sizes of the SF6 spool [[Media:HV_insulator-1st_month.pptx]]<br />
** Jan 2023 summary [[Media:500kV Summary Jan 2023.png]]<br />
** Reached 315 kV [[Media:221220253.5.png]]<br />
<br />
<br />
==18 in gun:==<br />
<br />
[[Image:200 kV white tracking.png|500px|thumb|left|T-cathode]]<br />
[[Image:Shield 8 tracking.png|500px|thumb|left|T-cathode]]<br />
[[Image:R30-3 tracking.png|500px|thumb|left|T-cathode]]<br />
[[Image:R30-4 tracking.png|500px|thumb|left|T-cathode]] <br />
<br />
** Snapshots of tracking at -200 kV, E_0 = 0.025 eV , r = 2 mm.<br />
<br />
** Kick and angle after S&A found a 0.5 mm anode deviation [[Media: CIS-R30-3_slots_SURVEYED_CHECK_crashed.pptx]]<br />
** Hinged anode simulations<span class="dangerousLink">[https://wiki.jlab.org/ciswiki/images/f/fa/18_in_CEBAF_gun_Hinged_anode.pptx 18_in_CEBAF_gun_Hinged_anode.pptx][https://wiki.jlab.org/ciswiki/images/b/bf/18_in_CEBAF_gun_Hinged_anode_V2_with_shift_comparison.pptx 18_in_CEBAF_gun_Hinged_anode_V2_with_shift_comparison.pptx] [https://wiki.jlab.org/ciswiki/images/b/b4/R30-3_Shauns_hinged_anode.pptx R30-3_Shauns_hinged_anode.pptx][https://wiki.jlab.org/ciswiki/images/c/ce/R30-3_Shauns_hinged_anode_FINER_MESH.pptx R30-3_Shauns_hinged_anode_FINER_MESH.pptx][https://wiki.jlab.org/ciswiki/images/8/8f/R30-3_Shauns_hinged_anode_Found_X_ASYM_culprit.pptx R30-3_Shauns_hinged_anode_Found_X_ASYM_culprit.pptx] ''' ''' </span><br />
** Comparing Shields to answer the question: Can we use a smaller shield for op at -200 kV? [[Media: GTS_gun_with_CEBAF_anode_Shields.pptx]]<br />
** Exploring the anode location to cancel vertical kick [[Media:18in_gun_anode_studies.pptx]]<br />
<br />
== Wien filter stuff: ==<br />
'''12th International Particle Accelerator Conference - IPAC’21, May 24-28, 2021''' https://www.ipac21.org/#<br />
** Wien filter submitted after JLab internal review approval [[Media:Gabriel Palacios Wien filter Abstract IPAC21 FINAL.docx]]<br />
** Poster slides [[Media:IPAC_2021_poster_slides_final_Gabriel_Palacios.pptx]]<br />
<br />
Summary comparing GPT results with ideal E-field CST model compared to actual surveyed Vertical Wien assembly. <br />
The presentation also indicates the location in the O group drive of the various CST-generated E-field maps and GPT beam dynamics simulations.<br />
The Horizontal beam assembly electrode assembly is < 100 micron difference in pitch along the beam path. There was no need to generate a new field map. <br />
*[[Media:Vertical Wien GPT sims with spline electrodes Surveyed.pptx]]<br />
<br />
Spline electrode GPT simulations<br />
* [[Media:Wien_filter_GPT_7_Spline_electrode.pptx ]]<br />
<br />
Asymmetric bias GPT simulations<br />
* [[Media:Wien_filter_GPT_6.pptx ]]<br />
<br />
Inter-plate gap GPT simulations<br />
* [[Media:Wien_filter_GPT_5.pptx ]]<br />
<br />
Optics of the Wien filter, final<br />
* [[Media:Wien_filter_GPT_4_FINAL.pptx ]]<br />
<br />
Optics of the Wien filter, first try<br />
* [[Media:Wien_filter_GPT_3.pptx ]]<br />
<br />
Bolts and washers (metal and alumina sims).<br />
* [[Media:Wien_filter_bolts_and_washers.pptx ]]<br />
<br />
Exploring the reduction on the inter-plate gap.<br />
* [[Media:Wien_filter_shorter_plate_gaps.pptx ]]<br />
<br />
Double thickness mounting tab sims.<br />
* [[Media:Wien_filter_mounting_tab.pptx ]]<br />
<br />
Wien filter 6: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_6.pptx ]] <br />
<br />
Wien filter 4: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_4.pptx ]]<br />
<br />
Wien filter 3: I measured the vacuum lab's Wien filter and checked what we can scavenge for the 40 kV feedthrough version.<br />
* [[Media:Wien_filter_3.pptx ]]<br />
<br />
Wien filter 2: Simulation results for the 40 kV feedthrough for Wien filter at UITF.<br />
* [[Media:Wien_filter_2.pptx ]]<br />
<br />
Wien filter 1: Simulation results for the existing (05/22/2019) Wien filter at UITF.<br />
* [[Media:Wien_filter_1.pptx ]]<br />
<br />
------------------------------------------------------------<br />
<br />
== Gun related ==<br />
<br />
'''Solidworks sumary'''<br />
<br />
* [[Media:GTS_gun_model_sumary.pdf]]<br />
* [[Media:T-cathode_gun_model_sumary.pdf]]<br />
<br />
<br />
'''Data taking runs''' <br />
<br />
UITF T-cathode electrode vs Small Shield: BPM data and centering in first lens at 200 [kV]<br />
* Rev5 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-8.pptx]]<br />
* Rev4 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-7.pptx]]<br />
* Rev3 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-6.pptx]]<br />
* Rev2 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-5.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-4.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-3.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV.pptx]]<br />
<br />
Log entry related to how the Laser XY stage moves along the X-axis<br />
* https://logbooks.jlab.org/entry/3704517<br />
<br />
Images of on axis QE run p2_2019-06-04_15_39 to calculate STEP-mm conversion factor<br />
* [[Media:QE scan fixed X 10000.png]]<br />
* [[Media:QE scan fixed Y 10000.png]]<br />
<br />
Ey difference for T-cathode and Small shield (From CST field maps)<br />
* [[Media:Ey difference for T-cathode and Small shield.PNG]]<br />
<br />
<br />
'''GPT, CST, COMSOL '''<br />
<br />
CST particle tracking of T-cathode, Small Shield and Big Shield @-200 kV<br />
* [[Media:Cathodes_particle_tracking_CST_1.pptx]]<br />
<br />
CORRECTION: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1_CORRECTED.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of GBacc on emittance. <br />
* [[Media:GTS_GPT_3.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of field map interpolation step-size on emittance. <br />
* [[Media:GTS_GPT_2.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -200 kV. This was produced using Yan's GTS parameters. We are trying to find out why is the measurements and simulated emittance so different. <br />
* [[Media:GTS_GPT_1.pptx]]<br />
<br />
THIS FILE HAS BEEN CORRECTED: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters. This is the same as the previous entry but shows extra slides with comparisons of the three cathodes wth one metric as requested by Matt. <br />
* [[Media:New_CEBAF_gun_CST_4_2.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:New_CEBAF_gun_CST_4.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV.<br />
* [[Media:New_CEBAF_gun_CST_3.pptx]]<br />
<br />
Test shields 1 to 7 simulations on CST for the -200 kV new CEBAF gun (and includes a bit of the GTS gun field maps at 200 kV w/small anode). <br />
* [[Media:New_CEBAF_gun_CST_2.pptx]]<br />
<br />
Test shields 1,2,3 & 4 simulations on CST for the -200 kV new CEBAF gun. <br />
* [[Media:New_CEBAF_gun_CST_1.pdf]] [[Media:New_CEBAF_gun_CST_1.pptx]]<br />
* [[Media:New_CEBAF_gun_CST_1_w-noshield.pdf]] [[Media:New_CEBAF_gun_CST_1_w-noshield.pptx]]<br />
<br />
Field maps for the -200 kV new CEBAF gun @-130 kV and -180 kV. <br />
* [[Media:Field_maps_for_the_new_CEBAF_gun_at_130_kV_and_180_kV.pdf]]<br />
<br />
Results for CST microwave studio simulations of the -300 kV GTS gun. <br />
* [[Media:GTS_CST_1.pdf]]<br />
<br />
Corrections on the simulation results for the -200 kV CEBAF gun paper. <br />
* [[Media:COMSOL_corrected.pdf]]<br />
<br />
Document with details on the Pierce geometry angle variations for the -300 kV GTS gun. <br />
* [[Media:GTS COMSOL 8.pdf]]<br />
<br />
COMSOL simulations for 300kV and 200kV guns upper shields<br />
* [[Media:300kV_COMSOL_upper_shields.pdf]]<br />
* [[Media:200kV_COMSOL_upper_shield.pdf]]<br />
<br />
COMSOL modeling comparing CEBAF 130kV white insulator no shed versus Upgrade 200kV black insulator with shed.<br />
(Both guns biased at -200kV)<br />
* [[Media:COMSOL comparison CEBAF 130kV to 200kV upgrade.pdf]]<br />
* [[Media:COMSOL ceramic conductivity.pdf]]-</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=Gabriel_Palacios-Serrano&diff=30019Gabriel Palacios-Serrano2023-07-19T23:41:27Z<p>Gabrielp: </p>
<hr />
<div>*[https://drive.google.com/file/d/1FpWgPuf9JgBxLSfFNQE8-ZHq7Sncs88N/view PhD Dissertation defense March 23 2021]<br />
*[[Media:Gabriel's thesis outline draft Feb 2019 Rev00.docx]] <br />
<br />
------------------------------------------------------------<br />
== HV insulator for 500 kV: ==<br />
** Feb 2023 project update [[Media: 500_kV_project_update_Feb_2023.pptx]]<br />
** Exploring the use of the receptacle and the sizes of the SF6 spool [[Media:HV_insulator-1st_month.pptx]]<br />
** Jan 2023 summary [[Media:500kV Summary Jan 2023.png]]<br />
** Reached 315 kV [[Media:221220253.5.png]]<br />
<br />
<br />
==18 in gun:==<br />
<br />
** Snapshots of tracking at -200 kV, E_0 = 0.025 eV , r = 2 mm:<br />
[[Image:200 kV white tracking.png|500px|thumb|left|T-cathode]]<br />
[[Image:Shield 8 tracking.png|500px|thumb|left|T-cathode]]<br />
[[Image:R30-3 tracking.png|500px|thumb|left|T-cathode]]<br />
[[Image:R30-4 tracking.png|500px|thumb|left|T-cathode]] <br />
<br />
<br />
** Kick and angle after S&A found a 0.5 mm anode deviation [[Media: CIS-R30-3_slots_SURVEYED_CHECK_crashed.pptx]]<br />
** Hinged anode simulations<span class="dangerousLink">[https://wiki.jlab.org/ciswiki/images/f/fa/18_in_CEBAF_gun_Hinged_anode.pptx 18_in_CEBAF_gun_Hinged_anode.pptx][https://wiki.jlab.org/ciswiki/images/b/bf/18_in_CEBAF_gun_Hinged_anode_V2_with_shift_comparison.pptx 18_in_CEBAF_gun_Hinged_anode_V2_with_shift_comparison.pptx] [https://wiki.jlab.org/ciswiki/images/b/b4/R30-3_Shauns_hinged_anode.pptx R30-3_Shauns_hinged_anode.pptx][https://wiki.jlab.org/ciswiki/images/c/ce/R30-3_Shauns_hinged_anode_FINER_MESH.pptx R30-3_Shauns_hinged_anode_FINER_MESH.pptx][https://wiki.jlab.org/ciswiki/images/8/8f/R30-3_Shauns_hinged_anode_Found_X_ASYM_culprit.pptx R30-3_Shauns_hinged_anode_Found_X_ASYM_culprit.pptx] ''' ''' </span><br />
** Comparing Shields to answer the question: Can we use a smaller shield for op at -200 kV? [[Media: GTS_gun_with_CEBAF_anode_Shields.pptx]]<br />
** Exploring the anode location to cancel vertical kick [[Media:18in_gun_anode_studies.pptx]]<br />
<br />
== Wien filter stuff: ==<br />
'''12th International Particle Accelerator Conference - IPAC’21, May 24-28, 2021''' https://www.ipac21.org/#<br />
** Wien filter submitted after JLab internal review approval [[Media:Gabriel Palacios Wien filter Abstract IPAC21 FINAL.docx]]<br />
** Poster slides [[Media:IPAC_2021_poster_slides_final_Gabriel_Palacios.pptx]]<br />
<br />
Summary comparing GPT results with ideal E-field CST model compared to actual surveyed Vertical Wien assembly. <br />
The presentation also indicates the location in the O group drive of the various CST-generated E-field maps and GPT beam dynamics simulations.<br />
The Horizontal beam assembly electrode assembly is < 100 micron difference in pitch along the beam path. There was no need to generate a new field map. <br />
*[[Media:Vertical Wien GPT sims with spline electrodes Surveyed.pptx]]<br />
<br />
Spline electrode GPT simulations<br />
* [[Media:Wien_filter_GPT_7_Spline_electrode.pptx ]]<br />
<br />
Asymmetric bias GPT simulations<br />
* [[Media:Wien_filter_GPT_6.pptx ]]<br />
<br />
Inter-plate gap GPT simulations<br />
* [[Media:Wien_filter_GPT_5.pptx ]]<br />
<br />
Optics of the Wien filter, final<br />
* [[Media:Wien_filter_GPT_4_FINAL.pptx ]]<br />
<br />
Optics of the Wien filter, first try<br />
* [[Media:Wien_filter_GPT_3.pptx ]]<br />
<br />
Bolts and washers (metal and alumina sims).<br />
* [[Media:Wien_filter_bolts_and_washers.pptx ]]<br />
<br />
Exploring the reduction on the inter-plate gap.<br />
* [[Media:Wien_filter_shorter_plate_gaps.pptx ]]<br />
<br />
Double thickness mounting tab sims.<br />
* [[Media:Wien_filter_mounting_tab.pptx ]]<br />
<br />
Wien filter 6: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_6.pptx ]] <br />
<br />
Wien filter 4: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_4.pptx ]]<br />
<br />
Wien filter 3: I measured the vacuum lab's Wien filter and checked what we can scavenge for the 40 kV feedthrough version.<br />
* [[Media:Wien_filter_3.pptx ]]<br />
<br />
Wien filter 2: Simulation results for the 40 kV feedthrough for Wien filter at UITF.<br />
* [[Media:Wien_filter_2.pptx ]]<br />
<br />
Wien filter 1: Simulation results for the existing (05/22/2019) Wien filter at UITF.<br />
* [[Media:Wien_filter_1.pptx ]]<br />
<br />
------------------------------------------------------------<br />
<br />
== Gun related ==<br />
<br />
'''Solidworks sumary'''<br />
<br />
* [[Media:GTS_gun_model_sumary.pdf]]<br />
* [[Media:T-cathode_gun_model_sumary.pdf]]<br />
<br />
<br />
'''Data taking runs''' <br />
<br />
UITF T-cathode electrode vs Small Shield: BPM data and centering in first lens at 200 [kV]<br />
* Rev5 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-8.pptx]]<br />
* Rev4 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-7.pptx]]<br />
* Rev3 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-6.pptx]]<br />
* Rev2 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-5.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-4.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-3.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV.pptx]]<br />
<br />
Log entry related to how the Laser XY stage moves along the X-axis<br />
* https://logbooks.jlab.org/entry/3704517<br />
<br />
Images of on axis QE run p2_2019-06-04_15_39 to calculate STEP-mm conversion factor<br />
* [[Media:QE scan fixed X 10000.png]]<br />
* [[Media:QE scan fixed Y 10000.png]]<br />
<br />
Ey difference for T-cathode and Small shield (From CST field maps)<br />
* [[Media:Ey difference for T-cathode and Small shield.PNG]]<br />
<br />
<br />
'''GPT, CST, COMSOL '''<br />
<br />
CST particle tracking of T-cathode, Small Shield and Big Shield @-200 kV<br />
* [[Media:Cathodes_particle_tracking_CST_1.pptx]]<br />
<br />
CORRECTION: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1_CORRECTED.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of GBacc on emittance. <br />
* [[Media:GTS_GPT_3.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of field map interpolation step-size on emittance. <br />
* [[Media:GTS_GPT_2.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -200 kV. This was produced using Yan's GTS parameters. We are trying to find out why is the measurements and simulated emittance so different. <br />
* [[Media:GTS_GPT_1.pptx]]<br />
<br />
THIS FILE HAS BEEN CORRECTED: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters. This is the same as the previous entry but shows extra slides with comparisons of the three cathodes wth one metric as requested by Matt. <br />
* [[Media:New_CEBAF_gun_CST_4_2.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:New_CEBAF_gun_CST_4.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV.<br />
* [[Media:New_CEBAF_gun_CST_3.pptx]]<br />
<br />
Test shields 1 to 7 simulations on CST for the -200 kV new CEBAF gun (and includes a bit of the GTS gun field maps at 200 kV w/small anode). <br />
* [[Media:New_CEBAF_gun_CST_2.pptx]]<br />
<br />
Test shields 1,2,3 & 4 simulations on CST for the -200 kV new CEBAF gun. <br />
* [[Media:New_CEBAF_gun_CST_1.pdf]] [[Media:New_CEBAF_gun_CST_1.pptx]]<br />
* [[Media:New_CEBAF_gun_CST_1_w-noshield.pdf]] [[Media:New_CEBAF_gun_CST_1_w-noshield.pptx]]<br />
<br />
Field maps for the -200 kV new CEBAF gun @-130 kV and -180 kV. <br />
* [[Media:Field_maps_for_the_new_CEBAF_gun_at_130_kV_and_180_kV.pdf]]<br />
<br />
Results for CST microwave studio simulations of the -300 kV GTS gun. <br />
* [[Media:GTS_CST_1.pdf]]<br />
<br />
Corrections on the simulation results for the -200 kV CEBAF gun paper. <br />
* [[Media:COMSOL_corrected.pdf]]<br />
<br />
Document with details on the Pierce geometry angle variations for the -300 kV GTS gun. <br />
* [[Media:GTS COMSOL 8.pdf]]<br />
<br />
COMSOL simulations for 300kV and 200kV guns upper shields<br />
* [[Media:300kV_COMSOL_upper_shields.pdf]]<br />
* [[Media:200kV_COMSOL_upper_shield.pdf]]<br />
<br />
COMSOL modeling comparing CEBAF 130kV white insulator no shed versus Upgrade 200kV black insulator with shed.<br />
(Both guns biased at -200kV)<br />
* [[Media:COMSOL comparison CEBAF 130kV to 200kV upgrade.pdf]]<br />
* [[Media:COMSOL ceramic conductivity.pdf]]-</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:R30-4_tracking.png&diff=30018File:R30-4 tracking.png2023-07-19T23:32:19Z<p>Gabrielp: </p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:R30-3_tracking.png&diff=30017File:R30-3 tracking.png2023-07-19T23:31:40Z<p>Gabrielp: </p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:Shield_8_tracking.png&diff=30016File:Shield 8 tracking.png2023-07-19T23:30:39Z<p>Gabrielp: </p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=Gabriel_Palacios-Serrano&diff=30015Gabriel Palacios-Serrano2023-07-19T23:10:50Z<p>Gabrielp: /* 18 in gun: */</p>
<hr />
<div>*[https://drive.google.com/file/d/1FpWgPuf9JgBxLSfFNQE8-ZHq7Sncs88N/view PhD Dissertation defense March 23 2021]<br />
*[[Media:Gabriel's thesis outline draft Feb 2019 Rev00.docx]] <br />
<br />
------------------------------------------------------------<br />
== HV insulator for 500 kV: ==<br />
** Feb 2023 project update [[Media: 500_kV_project_update_Feb_2023.pptx]]<br />
** Exploring the use of the receptacle and the sizes of the SF6 spool [[Media:HV_insulator-1st_month.pptx]]<br />
** Jan 2023 summary [[Media:500kV Summary Jan 2023.png]]<br />
** Reached 315 kV [[Media:221220253.5.png]]<br />
<br />
<br />
==18 in gun:==<br />
<br />
** Snapshots of tracking at -200 kV, 0.025 eV E_0, r = 2 mm:'''<code>[[File:200 kV white tracking.png|200px|thumb|left|alt text]]</code>'''<br />
** Kick and angle after S&A found a 0.5 mm anode deviation [[Media: CIS-R30-3_slots_SURVEYED_CHECK_crashed.pptx]]<br />
** Hinged anode simulations<span class="dangerousLink">[https://wiki.jlab.org/ciswiki/images/f/fa/18_in_CEBAF_gun_Hinged_anode.pptx 18_in_CEBAF_gun_Hinged_anode.pptx][https://wiki.jlab.org/ciswiki/images/b/bf/18_in_CEBAF_gun_Hinged_anode_V2_with_shift_comparison.pptx 18_in_CEBAF_gun_Hinged_anode_V2_with_shift_comparison.pptx] [https://wiki.jlab.org/ciswiki/images/b/b4/R30-3_Shauns_hinged_anode.pptx R30-3_Shauns_hinged_anode.pptx][https://wiki.jlab.org/ciswiki/images/c/ce/R30-3_Shauns_hinged_anode_FINER_MESH.pptx R30-3_Shauns_hinged_anode_FINER_MESH.pptx][https://wiki.jlab.org/ciswiki/images/8/8f/R30-3_Shauns_hinged_anode_Found_X_ASYM_culprit.pptx R30-3_Shauns_hinged_anode_Found_X_ASYM_culprit.pptx] ''' ''' </span><br />
** Comparing Shields to answer the question: Can we use a smaller shield for op at -200 kV? [[Media: GTS_gun_with_CEBAF_anode_Shields.pptx]]<br />
** Exploring the anode location to cancel vertical kick [[Media:18in_gun_anode_studies.pptx]]<br />
<br />
== Wien filter stuff: ==<br />
'''12th International Particle Accelerator Conference - IPAC’21, May 24-28, 2021''' https://www.ipac21.org/#<br />
** Wien filter submitted after JLab internal review approval [[Media:Gabriel Palacios Wien filter Abstract IPAC21 FINAL.docx]]<br />
** Poster slides [[Media:IPAC_2021_poster_slides_final_Gabriel_Palacios.pptx]]<br />
<br />
Summary comparing GPT results with ideal E-field CST model compared to actual surveyed Vertical Wien assembly. <br />
The presentation also indicates the location in the O group drive of the various CST-generated E-field maps and GPT beam dynamics simulations.<br />
The Horizontal beam assembly electrode assembly is < 100 micron difference in pitch along the beam path. There was no need to generate a new field map. <br />
*[[Media:Vertical Wien GPT sims with spline electrodes Surveyed.pptx]]<br />
<br />
Spline electrode GPT simulations<br />
* [[Media:Wien_filter_GPT_7_Spline_electrode.pptx ]]<br />
<br />
Asymmetric bias GPT simulations<br />
* [[Media:Wien_filter_GPT_6.pptx ]]<br />
<br />
Inter-plate gap GPT simulations<br />
* [[Media:Wien_filter_GPT_5.pptx ]]<br />
<br />
Optics of the Wien filter, final<br />
* [[Media:Wien_filter_GPT_4_FINAL.pptx ]]<br />
<br />
Optics of the Wien filter, first try<br />
* [[Media:Wien_filter_GPT_3.pptx ]]<br />
<br />
Bolts and washers (metal and alumina sims).<br />
* [[Media:Wien_filter_bolts_and_washers.pptx ]]<br />
<br />
Exploring the reduction on the inter-plate gap.<br />
* [[Media:Wien_filter_shorter_plate_gaps.pptx ]]<br />
<br />
Double thickness mounting tab sims.<br />
* [[Media:Wien_filter_mounting_tab.pptx ]]<br />
<br />
Wien filter 6: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_6.pptx ]] <br />
<br />
Wien filter 4: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_4.pptx ]]<br />
<br />
Wien filter 3: I measured the vacuum lab's Wien filter and checked what we can scavenge for the 40 kV feedthrough version.<br />
* [[Media:Wien_filter_3.pptx ]]<br />
<br />
Wien filter 2: Simulation results for the 40 kV feedthrough for Wien filter at UITF.<br />
* [[Media:Wien_filter_2.pptx ]]<br />
<br />
Wien filter 1: Simulation results for the existing (05/22/2019) Wien filter at UITF.<br />
* [[Media:Wien_filter_1.pptx ]]<br />
<br />
------------------------------------------------------------<br />
<br />
== Gun related ==<br />
<br />
'''Solidworks sumary'''<br />
<br />
* [[Media:GTS_gun_model_sumary.pdf]]<br />
* [[Media:T-cathode_gun_model_sumary.pdf]]<br />
<br />
<br />
'''Data taking runs''' <br />
<br />
UITF T-cathode electrode vs Small Shield: BPM data and centering in first lens at 200 [kV]<br />
* Rev5 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-8.pptx]]<br />
* Rev4 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-7.pptx]]<br />
* Rev3 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-6.pptx]]<br />
* Rev2 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-5.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-4.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-3.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV.pptx]]<br />
<br />
Log entry related to how the Laser XY stage moves along the X-axis<br />
* https://logbooks.jlab.org/entry/3704517<br />
<br />
Images of on axis QE run p2_2019-06-04_15_39 to calculate STEP-mm conversion factor<br />
* [[Media:QE scan fixed X 10000.png]]<br />
* [[Media:QE scan fixed Y 10000.png]]<br />
<br />
Ey difference for T-cathode and Small shield (From CST field maps)<br />
* [[Media:Ey difference for T-cathode and Small shield.PNG]]<br />
<br />
<br />
'''GPT, CST, COMSOL '''<br />
<br />
CST particle tracking of T-cathode, Small Shield and Big Shield @-200 kV<br />
* [[Media:Cathodes_particle_tracking_CST_1.pptx]]<br />
<br />
CORRECTION: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1_CORRECTED.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of GBacc on emittance. <br />
* [[Media:GTS_GPT_3.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of field map interpolation step-size on emittance. <br />
* [[Media:GTS_GPT_2.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -200 kV. This was produced using Yan's GTS parameters. We are trying to find out why is the measurements and simulated emittance so different. <br />
* [[Media:GTS_GPT_1.pptx]]<br />
<br />
THIS FILE HAS BEEN CORRECTED: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters. This is the same as the previous entry but shows extra slides with comparisons of the three cathodes wth one metric as requested by Matt. <br />
* [[Media:New_CEBAF_gun_CST_4_2.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:New_CEBAF_gun_CST_4.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV.<br />
* [[Media:New_CEBAF_gun_CST_3.pptx]]<br />
<br />
Test shields 1 to 7 simulations on CST for the -200 kV new CEBAF gun (and includes a bit of the GTS gun field maps at 200 kV w/small anode). <br />
* [[Media:New_CEBAF_gun_CST_2.pptx]]<br />
<br />
Test shields 1,2,3 & 4 simulations on CST for the -200 kV new CEBAF gun. <br />
* [[Media:New_CEBAF_gun_CST_1.pdf]] [[Media:New_CEBAF_gun_CST_1.pptx]]<br />
* [[Media:New_CEBAF_gun_CST_1_w-noshield.pdf]] [[Media:New_CEBAF_gun_CST_1_w-noshield.pptx]]<br />
<br />
Field maps for the -200 kV new CEBAF gun @-130 kV and -180 kV. <br />
* [[Media:Field_maps_for_the_new_CEBAF_gun_at_130_kV_and_180_kV.pdf]]<br />
<br />
Results for CST microwave studio simulations of the -300 kV GTS gun. <br />
* [[Media:GTS_CST_1.pdf]]<br />
<br />
Corrections on the simulation results for the -200 kV CEBAF gun paper. <br />
* [[Media:COMSOL_corrected.pdf]]<br />
<br />
Document with details on the Pierce geometry angle variations for the -300 kV GTS gun. <br />
* [[Media:GTS COMSOL 8.pdf]]<br />
<br />
COMSOL simulations for 300kV and 200kV guns upper shields<br />
* [[Media:300kV_COMSOL_upper_shields.pdf]]<br />
* [[Media:200kV_COMSOL_upper_shield.pdf]]<br />
<br />
COMSOL modeling comparing CEBAF 130kV white insulator no shed versus Upgrade 200kV black insulator with shed.<br />
(Both guns biased at -200kV)<br />
* [[Media:COMSOL comparison CEBAF 130kV to 200kV upgrade.pdf]]<br />
* [[Media:COMSOL ceramic conductivity.pdf]]-</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:200_kV_white_tracking.png&diff=30014File:200 kV white tracking.png2023-07-19T23:07:24Z<p>Gabrielp: </p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=Gabriel_Palacios-Serrano&diff=30010Gabriel Palacios-Serrano2023-07-19T11:27:04Z<p>Gabrielp: /* 18 in gun: */</p>
<hr />
<div>*[https://drive.google.com/file/d/1FpWgPuf9JgBxLSfFNQE8-ZHq7Sncs88N/view PhD Dissertation defense March 23 2021]<br />
*[[Media:Gabriel's thesis outline draft Feb 2019 Rev00.docx]] <br />
<br />
------------------------------------------------------------<br />
== HV insulator for 500 kV: ==<br />
** Feb 2023 project update [[Media: 500_kV_project_update_Feb_2023.pptx]]<br />
** Exploring the use of the receptacle and the sizes of the SF6 spool [[Media:HV_insulator-1st_month.pptx]]<br />
** Jan 2023 summary [[Media:500kV Summary Jan 2023.png]]<br />
** Reached 315 kV [[Media:221220253.5.png]]<br />
<br />
<br />
==18 in gun:==<br />
<br />
** Kick and angle after S&A found a 0.5 mm anode deviation [[Media: CIS-R30-3_slots_SURVEYED_CHECK_crashed.pptx]]<br />
** Hinged anode simulations<span class="dangerousLink">[https://wiki.jlab.org/ciswiki/images/f/fa/18_in_CEBAF_gun_Hinged_anode.pptx 18_in_CEBAF_gun_Hinged_anode.pptx][https://wiki.jlab.org/ciswiki/images/b/bf/18_in_CEBAF_gun_Hinged_anode_V2_with_shift_comparison.pptx 18_in_CEBAF_gun_Hinged_anode_V2_with_shift_comparison.pptx] [https://wiki.jlab.org/ciswiki/images/b/b4/R30-3_Shauns_hinged_anode.pptx R30-3_Shauns_hinged_anode.pptx][https://wiki.jlab.org/ciswiki/images/c/ce/R30-3_Shauns_hinged_anode_FINER_MESH.pptx R30-3_Shauns_hinged_anode_FINER_MESH.pptx][https://wiki.jlab.org/ciswiki/images/8/8f/R30-3_Shauns_hinged_anode_Found_X_ASYM_culprit.pptx R30-3_Shauns_hinged_anode_Found_X_ASYM_culprit.pptx] ''' ''' </span><br />
** Comparing Shields to answer the question: Can we use a smaller shield for op at -200 kV? [[Media: GTS_gun_with_CEBAF_anode_Shields.pptx]]<br />
** Exploring the anode location to cancel vertical kick [[Media:18in_gun_anode_studies.pptx]]<br />
<br />
== Wien filter stuff: ==<br />
'''12th International Particle Accelerator Conference - IPAC’21, May 24-28, 2021''' https://www.ipac21.org/#<br />
** Wien filter submitted after JLab internal review approval [[Media:Gabriel Palacios Wien filter Abstract IPAC21 FINAL.docx]]<br />
** Poster slides [[Media:IPAC_2021_poster_slides_final_Gabriel_Palacios.pptx]]<br />
<br />
Summary comparing GPT results with ideal E-field CST model compared to actual surveyed Vertical Wien assembly. <br />
The presentation also indicates the location in the O group drive of the various CST-generated E-field maps and GPT beam dynamics simulations.<br />
The Horizontal beam assembly electrode assembly is < 100 micron difference in pitch along the beam path. There was no need to generate a new field map. <br />
*[[Media:Vertical Wien GPT sims with spline electrodes Surveyed.pptx]]<br />
<br />
Spline electrode GPT simulations<br />
* [[Media:Wien_filter_GPT_7_Spline_electrode.pptx ]]<br />
<br />
Asymmetric bias GPT simulations<br />
* [[Media:Wien_filter_GPT_6.pptx ]]<br />
<br />
Inter-plate gap GPT simulations<br />
* [[Media:Wien_filter_GPT_5.pptx ]]<br />
<br />
Optics of the Wien filter, final<br />
* [[Media:Wien_filter_GPT_4_FINAL.pptx ]]<br />
<br />
Optics of the Wien filter, first try<br />
* [[Media:Wien_filter_GPT_3.pptx ]]<br />
<br />
Bolts and washers (metal and alumina sims).<br />
* [[Media:Wien_filter_bolts_and_washers.pptx ]]<br />
<br />
Exploring the reduction on the inter-plate gap.<br />
* [[Media:Wien_filter_shorter_plate_gaps.pptx ]]<br />
<br />
Double thickness mounting tab sims.<br />
* [[Media:Wien_filter_mounting_tab.pptx ]]<br />
<br />
Wien filter 6: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_6.pptx ]] <br />
<br />
Wien filter 4: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_4.pptx ]]<br />
<br />
Wien filter 3: I measured the vacuum lab's Wien filter and checked what we can scavenge for the 40 kV feedthrough version.<br />
* [[Media:Wien_filter_3.pptx ]]<br />
<br />
Wien filter 2: Simulation results for the 40 kV feedthrough for Wien filter at UITF.<br />
* [[Media:Wien_filter_2.pptx ]]<br />
<br />
Wien filter 1: Simulation results for the existing (05/22/2019) Wien filter at UITF.<br />
* [[Media:Wien_filter_1.pptx ]]<br />
<br />
------------------------------------------------------------<br />
<br />
== Gun related ==<br />
<br />
'''Solidworks sumary'''<br />
<br />
* [[Media:GTS_gun_model_sumary.pdf]]<br />
* [[Media:T-cathode_gun_model_sumary.pdf]]<br />
<br />
<br />
'''Data taking runs''' <br />
<br />
UITF T-cathode electrode vs Small Shield: BPM data and centering in first lens at 200 [kV]<br />
* Rev5 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-8.pptx]]<br />
* Rev4 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-7.pptx]]<br />
* Rev3 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-6.pptx]]<br />
* Rev2 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-5.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-4.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-3.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV.pptx]]<br />
<br />
Log entry related to how the Laser XY stage moves along the X-axis<br />
* https://logbooks.jlab.org/entry/3704517<br />
<br />
Images of on axis QE run p2_2019-06-04_15_39 to calculate STEP-mm conversion factor<br />
* [[Media:QE scan fixed X 10000.png]]<br />
* [[Media:QE scan fixed Y 10000.png]]<br />
<br />
Ey difference for T-cathode and Small shield (From CST field maps)<br />
* [[Media:Ey difference for T-cathode and Small shield.PNG]]<br />
<br />
<br />
'''GPT, CST, COMSOL '''<br />
<br />
CST particle tracking of T-cathode, Small Shield and Big Shield @-200 kV<br />
* [[Media:Cathodes_particle_tracking_CST_1.pptx]]<br />
<br />
CORRECTION: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1_CORRECTED.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of GBacc on emittance. <br />
* [[Media:GTS_GPT_3.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of field map interpolation step-size on emittance. <br />
* [[Media:GTS_GPT_2.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -200 kV. This was produced using Yan's GTS parameters. We are trying to find out why is the measurements and simulated emittance so different. <br />
* [[Media:GTS_GPT_1.pptx]]<br />
<br />
THIS FILE HAS BEEN CORRECTED: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters. This is the same as the previous entry but shows extra slides with comparisons of the three cathodes wth one metric as requested by Matt. <br />
* [[Media:New_CEBAF_gun_CST_4_2.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:New_CEBAF_gun_CST_4.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV.<br />
* [[Media:New_CEBAF_gun_CST_3.pptx]]<br />
<br />
Test shields 1 to 7 simulations on CST for the -200 kV new CEBAF gun (and includes a bit of the GTS gun field maps at 200 kV w/small anode). <br />
* [[Media:New_CEBAF_gun_CST_2.pptx]]<br />
<br />
Test shields 1,2,3 & 4 simulations on CST for the -200 kV new CEBAF gun. <br />
* [[Media:New_CEBAF_gun_CST_1.pdf]] [[Media:New_CEBAF_gun_CST_1.pptx]]<br />
* [[Media:New_CEBAF_gun_CST_1_w-noshield.pdf]] [[Media:New_CEBAF_gun_CST_1_w-noshield.pptx]]<br />
<br />
Field maps for the -200 kV new CEBAF gun @-130 kV and -180 kV. <br />
* [[Media:Field_maps_for_the_new_CEBAF_gun_at_130_kV_and_180_kV.pdf]]<br />
<br />
Results for CST microwave studio simulations of the -300 kV GTS gun. <br />
* [[Media:GTS_CST_1.pdf]]<br />
<br />
Corrections on the simulation results for the -200 kV CEBAF gun paper. <br />
* [[Media:COMSOL_corrected.pdf]]<br />
<br />
Document with details on the Pierce geometry angle variations for the -300 kV GTS gun. <br />
* [[Media:GTS COMSOL 8.pdf]]<br />
<br />
COMSOL simulations for 300kV and 200kV guns upper shields<br />
* [[Media:300kV_COMSOL_upper_shields.pdf]]<br />
* [[Media:200kV_COMSOL_upper_shield.pdf]]<br />
<br />
COMSOL modeling comparing CEBAF 130kV white insulator no shed versus Upgrade 200kV black insulator with shed.<br />
(Both guns biased at -200kV)<br />
* [[Media:COMSOL comparison CEBAF 130kV to 200kV upgrade.pdf]]<br />
* [[Media:COMSOL ceramic conductivity.pdf]]-</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:R30-3_Shauns_hinged_anode_Found_X_ASYM_culprit.pptx&diff=30009File:R30-3 Shauns hinged anode Found X ASYM culprit.pptx2023-07-19T11:22:48Z<p>Gabrielp: </p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:18_in_CEBAF_gun_Hinged_anode.pptx&diff=30008File:18 in CEBAF gun Hinged anode.pptx2023-07-19T11:15:57Z<p>Gabrielp: </p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=18%22_Photogun_with_flat_electrode_front_face_and_CEBAF_anode&diff=3000218" Photogun with flat electrode front face and CEBAF anode2023-07-14T17:44:52Z<p>Gabrielp: </p>
<hr />
<div>* [[File:Exploring the GTS spherical electrode with flat front face in the CEBAF HV chamber.pptx|right|middle|thumb]]<br />
* Gabriels slides on CST modeling will go here File:<span class="dangerousLink">[https://wiki.jlab.org/ciswiki/images/0/05/R30-4.pptx R30-4.pptx]</span><br /></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:R30-4.pptx&diff=30001File:R30-4.pptx2023-07-14T17:44:11Z<p>Gabrielp: Gabrielp uploaded a new version of File:R30-4.pptx</p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:R30-4.pptx&diff=30000File:R30-4.pptx2023-07-14T17:32:12Z<p>Gabrielp: </p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=Apr_18,_2023_-_CIS_Group_Meeting&diff=29652Apr 18, 2023 - CIS Group Meeting2023-04-18T14:43:50Z<p>Gabrielp: </p>
<hr />
<div>== Agenda ==<br />
<br />
==== General ====<br />
* You're doing a good job keeping safety training current => continue to be proactive, don't let it expire<br />
<br />
==== GTS ====<br />
* Gabriel HV insulator test April summary [[media: 500_kV_project_update_April_2023.pptx]]<br />
<br />
==== SAD Gun Jobs ====<br />
* Joe - gun table alignment<br />
* Carlos - HV OSP, read for conditioning: [[Media:Gun HV conditioniong schedule SAD 2023 Rev02.pptx]]<br />
* Marcy - remaining vacuum tasks, harp done?, chopper valve/bake region<br />
* Steve - Hall A laser, LLRF gone early June<br />
* Max - ready for beam tests?<br />
* Riad - 200 kV Wien - 20 Amp PS, update on Moller tasks (IA, RPT, grounding), Keithley 485 picoameter<br />
* Shukui - install new amplifier for KL, test 499/32 setup, measure D pulse length, and laser size<br />
<br />
==== Upcoming meetings/travel ====<br />
* May<br />
:* 5-13, IPAC'23 contributions (Greg, Aziz, Andriy, Joe, Reza, Amy)<br />
:* 15-19 LCWS (Andriy, Carlos) <br />
* Jun<br />
:* USPAS (Max)<br />
:* 5-9 APS DAMOP Meeting (Riad, Matt G.) <br />
:* 28, JLab User Group e+ update (Joe)<br />
* Jul<br />
:* Summer student PES talk (Riad)<br />
:* Summer student e+ talk (Yves)<br />
* Aug<br />
:* ?<br />
* Sep<br />
:* IBIC (Max)</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:500_kV_project_update_April_2023.pptx&diff=29651File:500 kV project update April 2023.pptx2023-04-18T14:43:22Z<p>Gabrielp: </p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=CIS_Conference_and_Workshop_Proceedings&diff=29622CIS Conference and Workshop Proceedings2023-04-11T16:25:01Z<p>Gabrielp: </p>
<hr />
<div>==2022==<br />
<br />
'''DILO 7th ANNUAL SF6 GAS MANAGEMENT SEMINAR, Tampa, FL. Nov 8-9, 2022''' [https://dilo.com/trainings-seminars/information-registration]<br />
* C. Hernandez-Garcia invited to present a 20-minute talk: [[Media:Carlos' Jefferson Lab SF6 use in power suppliess for accelerators.pptx]]<br />
<br />
'''EWPAA 2022: European Workshop on Photocathodes for Particle Accelerator Applications, INFN, Milan, Italy, September 20-22, 2022''' [https://agenda.infn.it/event/29956/]<br />
* C. Hernandez-Garcia, et al., "JLab DC gun developments", [[Media:JLab DC gun developments Hernandez-Garcia EWPAA 2022.pptx]]<br />
<br />
'''66th ICFA Advanced Beam Dynamics Workshop on Energy Recovery Linacs (ERL2022) - Cornell University, Oct 3-6''' [https://indico.him.uni-mainz.de/event/108/]<br />
* J. Grames (invited) "Spin polarized electron beam sources for high current"<br />
<br />
'''Workshop on Polarized Sources Targets and Polarimetry (PSTP22) - Mainz, Germany, Sept 26-29 2022''' [https://indico.him.uni-mainz.de/event/108/]<br />
* G. Palacios-Serrano, C. Hernandez-Garcia, and M. Poelker, "Wien-filter spin rotator with integrated ion pump" [[media: PSTP2022_018(1).pdf]]<br />
* J. Grames, "Spin Polarized Positron Beam Upgrade for Jefferson Lab", [[media:SpinPolarizedPositrons_PSTP2022_Abstract.docx|Abstract]] [[media:Grames-PSTP-FINAL.pptx|Slides]]<br />
<br />
'''North American Particle Accelerator Conference (NA-PAC'22) - Albuquerque, New Mexico 7-12 August 2022''' [https://attend.ieee.org/napac-2022/ NA PAC 2022]<br />
* G. Palacios-Serrano, C. Hernandez-Garcia, P. Adderley, D. Bullard, J. Grames, and M. Poelker, "High-gradient Wien spin rotators at Jefferson Lab", [[Media:WEP20 Palacios Serrano High gradient Wien filters.docx]]<br />
* C. Hernandez-Garcia, G. Palacios-Serran, J. GRames, and M. Poelker, "A 500 KV INVERTED GEOEMTRY FEEDTHROUGH FOR A HIGH VOLT-AGE DC ELECTRON GUN, [[Media:WEPA16.docx]], [[Media:WEEP16 Poster Hernandez-Garcia 500 kV feedthrough.pptx]]<br />
* M.A. Mamun, S.A.K. Wijethunga, R. Suleiman, C. Hernandez-Garcia, B. Bullard, J. R. Delayen, J. Grames, G. A. Krafft, G. Palacios-Serrano, and M. Poelker, "Improved Electrostatic Design of the Jefferson Lab 300 KV DC Photogun and the Minimization of Beam Deflection",[[media:Abstract_NAPAC2022_Gun_Redesign_&_Beam_Deflection_Mamun.docx | Abstract (talk)]] <br />
<!--* M.A. Mamun, J. Guo, B.F. Roberts, R. Suleiman, H. Wang, M. Poelker, G. Park, J. Henry, and R. A. Rimmer, "TE011 Cavity for Monitoring Magnetic Momentum of a Magnetized Beam",[[media:Abstract_NAPAC2022_TE011_Cavity_Mamun.docx | Abstract (poster)]] <br />
--><br />
* R. Suleiman, V. S. Morozov, Ya. S. Derbenev, "Measuring the Electric Dipole Moment of the Electron in a Two-energy Spin-Transparent Storage Ring", [[media:NAPAC22_eEDM_abstract.docx | Abstract]] <br />
* M. Bruker, R. Bachimanchi, J. Grames, M. McCaughan, J. Musson, T. Plawski, M. Poelker, T. Powers, H. Wang, Y. Wang: "Operational Experience of the New Booster Cryomodule at the Upgraded Injector Test Facility". [[media:PAC 2022 Max Abstract.pdf | Abstract]]<br />
* M. Bruker, J. Grames, C. Hernandez-Garcia, V. M. Lizárraga-Rubio, M. Poelker, C. A. Valerio-Lizárraga and J. T. Yoskowitz "New Results at JLab Describing Operating Lifetime of GaAs Photo-guns" [[media:Grames-NAPAC-v3.docx | Abstract]] <br />
<br />
'''13th International Particle Accelerator Conference (IPAC’22) - Bangkok, Thailand on 12-17 June 2022''' [https://www.ipac22.org IPAC 2022]<br />
*S. Habet, R. Bodenstein, A. Bogacz , J. Grames, A. Hofler, R. Kazimi, V. Kostrun , F. Lin, Y. Roblin, K. Smolenski, M. Stefani, R. Suleiman, A. Sy, D. Turner, A. Ushakov, C.A. Valerio-Lizarraga, E. Voutier, Y. Zhang, "CW polarized positron beams for 12 GeV CEBAF" [[media:IPAC22-Positrons-abstract.pdf]]<br />
<br />
* S. Zhang,...<br />
<br />
* S. Pokharel, G. A. Krafft, A. S. Hofler, R. Kazimi, M. Bruker, J. Grames, S. Zhang, "CEBAF Injector for KL Beam Conditions" [[media:MOPOTK052.PDF]] [[media:MOPOTK052.pptx]]<br />
<br />
* S. Pokharel, G. A. Krafft, A. S. Hofler, "Modeling a Nb3Sn Cryounit in GPT at UITF" [[media:MOPOTK051.PDF]] [[media:MOPOTK051.pptx]]<br />
<br />
'''J-Future Workshop, Jefferson Lab / Messina University, 28-30 March 2022''' [https://indico.jlab.org/event/520/ workshop website link]<br />
* J. Grames "Ce+BAF : Considerations and Prospects for Polarized (and unpolarized) Positron Beams" [[media:J-Future-Grames.pdf]] [[media:J-Future-Grames-Final.pptx]]<br />
<br />
'''Snowmass Polarized Positron Sources Workshop, March 1, 2022''' [https://indico.fnal.gov/event/52959/]<br />
<br />
* J. Grames, "Polarized positron source program at JLab"<br />
** slides - [[media:Grames-Positron-FINAL.pptx]]<br />
** contribution - [[media:Snowmass_Positron_Grames_Final.docx]]<br />
<br />
'''Snowmass Electron Source Workshop, February 16-18, 2022''' [https://indico.fnal.gov/event/46053/]<br />
<br />
* M. Poelker, "Cathode technologies to produce highly spin-polarized electron beams" [[media:snowmass_cathode technologies_poelker.pptx]]<br />
<br />
* J. Grames, "Capability and Prospects for Polarized Beams from GaAs DC Photogun" [[media:Grames_Snowmass2021_FINAL.pptx]]<br />
<br />
==2021==<br />
'''IEEE Conference on Electrical Insulation and Dielectric Phenomena, Vancouver, BC, Canada, December 12-15''' [https://ceidp.org IEEE CEIDP 2021]<br />
<br />
*C. Hernandez-Garcia, G. Palacios-Serrano, P. Adderley, D. Bullard, J. Grames, M. A. Mamun1, M. Poelker, M. Stutzman, R. Suleiman, Y. Wang, and S.A.K. Wijethunga "Inverted Geometry Ceramic Insulators in High Voltage DC Electron Guns for Accelerators" [[Media:Inv insulators paper published 2021 IEEE conf on elec insu and deil phenomena.pdf]]<br />
<br />
'''Photocathode Physics for Photoinjectors, SLAC, November 10-12, 2021''' [https://conf.slac.stanford.edu/photocathode-physics-photoinjectors-2021/ P3 Workshop]<br />
<br />
'''AVS Symposium, Charlotte NC, October 24-29'''<br />
<br />
'''24th International Symposium on Spin Physics (SPIN2021) October 18-22, 2021, Matsue, Japan - https://indico2.riken.jp/event/3082/'''<br />
<br />
* J. M. Grames, C. K. Sinclair, M. Poelker, X. Roca-Maza, M. L. Stutzman, R. Suleiman, Md. A. Mamun, M. McHugh, D. Moser, J. Hansknecht, B. Moffit and T. J. Gay "High Precision 5 MeV Mott Polarimeter" [[media:Grames-Spin2021.docx]] [[media:Grames_SPIN2021.pdf]] [[media:SPIN2021-GRAMES-103.pdf]]<br />
<br />
* M. Stefani and B. van der Geer, [[media:SPIN2021_Stefani.pdf | New Spin Tracking Software Developed For General Particle Tracer]], SPIN 2021<br />
<br />
* R. Suleiman, "EDM in Small Rings": [[media:EDM_SmallRings_Suleiman_Spin2021.pdf]]<br />
<br />
<br />
'''Mini-Symposium Advancements and Opportunities of Polarized Targets and Beams [http://web.mit.edu/dnp2021/index.html APS DNP Meeting, Boston Oct 11-14, 2021]'''<br />
<br />
* Shukui ?<br />
<br />
'''12th International Particle Accelerator Conference - IPAC’21, May 24-28, 2021''' https://www.ipac21.org/#<br />
<br />
* G. Palacios, P. Adderley, H. Baumgart, J. Benesch, D. Bullard, J. Grames, C. Hernandez-Garcia, A. Hofler, D. Machie, M. Poelker, M. Stutzman and R. Suleiman, "A 200 keV Wien Filter Spin Rotator Design and High Voltage Evaluation" [[Media:Gabriel Palacios Wien filter Abstract IPAC21 FINAL.docx | Abstract]][[Media:IPAC_2021_poster_slides_final_Gabriel_Palacios.pptx | Poster]] [[Media:Mopab324(1).pdf | Proceedings]]<br />
<br />
* J. T. Yoskowitz , G. A. Krafft, G. Palacios-Serrano, S. Wijethunga, J. Grames, J. Hansknecht, C. Hernandez-Garcia, M. Poelker, M. Stutzman, R. Suleiman and S. B. van der Geer, "IMPROVING THE OPERATIONAL LIFETIME OF THE CEBAF PHOTO- GUN BY ANODE BIASING" [[:File:Yoskowitz_IPAC2021_BiasedAnode_Abstract_2.docx | Abstract]] [[:File:WEPAB104.pdf | Proceedings]]<br />
<br />
* J. T. Yoskowitz , G. A. Krafft, S. B. van der Geer, J. Grames, C. A. Valerio Lizarraga "SIMULATING ELECTRON IMPACT IONIZATION USING A GENERAL PARTICLE TRACER (GPT) CUSTOM ELEMENT" [[:File:Yoskowitz_IPAC2021_GPT_Abstract_2.docx | Abstract]] [[:File:WEPAB105.pdf | Proceedings]]<br />
<br />
* S.A.K. Wijethunga , J.R. Delayen, G.A. Krafft , G. Palacios-Serrano, M.A. Mamun, C. Hernandez-Garcia, R. Suleiman, M. Poelker, J. Benesch, "REDESIGN OF THE JEFFERSON LAB -300 kV DC PHOTO-GUN FOR HIGH BUNCH CHARGE OPERATIONS" [[Media:WEPAB092.pdf|Proceedings]] [[Media:REDESIGN OF THE JEFFERSON LAB -300 kV DC PHOTO-GUN FOR HIGH BUNCH CHARGE OPERATIONS_poster.pdf|Poster]] <br />
<br />
* S. A. K. Wijethunga, J. R. Delayen, G. A. Krafft, M. A. Mamun, R. Suleiman, M. Poelker, S. Zhang, J. Benesch, "SPACE CHARGE EFFECT IN LOW ENERGY MAGNETIZED ELEC-TRON BEAM" [[Media:WEPAB093.pdf|Proceedings]] [[Media:SPACE CHARGE EFFECT IN LOW ENERGY MAGNETIZED ELECTRON BEAM_poster.pdf|Poster]] <br />
<br />
* Marcy Stutzman, Charles Hetzel, "Pressure Simulations for the EIC Interaction Region" [[media:WEPAB340.pdf]] [[media:WEPAB340_poster.pdf]]<br />
<br />
'''2021 International Workshop on Future Linear Colliders - LCWS2021, March 15-18, 2021''' https://indico.cern.ch/event/995633/<br />
* Proceedings https://www.slac.stanford.edu/econf/C2103151/<br />
* [[Media:Hernandez-Garcia JLab LCWS 500 kV insulators.pptx]]<br />
<br />
==2020==<br />
<br />
'''2020 Fall Meeting of the APS Division of Nuclear Physics Thursday–Sunday, October 29–November 1 2020'''<br />
:-J. Grames "Highly spin polarized electron and positron beams at a compact accelerator facility"<br />
:Session link: http://meetings.aps.org/Meeting/DNP20/APS_Invited [[media:APSDNP2020-Grames_FINAL_150dpi.pptx]]<br />
<br />
:-N. Trotta, J. Grames, F. Benmokhtar "Simulations of Positron Distributions from a Polarized Electron Beam" (poster), [[media:Trotta_Nicholaus_JA_FINAL.pptx]]<br />
<br />
'''Americas Workshop on Linear Colliders 2020''' (https://agenda.linearcollider.org/event/8622/overview)<br />
<br />
'''CFNS Workshop on Beam Polarization and Polarimetry at EIC ([https://indico.bnl.gov/event/7583/]) June 26, 2020'''<br />
:J. Grames "Production of Polarized Positrons at Jefferson Lab" (slides) [[media:Grames_CNFS_FINAL.pptx]]<br />
:T. Gay "High-Accuracy 5-MeV Mott Polarimetry at the CEBAF Injector" (slides) [[media:EIC Mott Talk v3.pdf]] [[media:EIC Mott Talk v3.pptx]] <br />
<br />
'''[http://ipac2020.vrws.de International Particle Accelerator Conference IPAC'20] (Caen, France, May 2020)'''<br />
: F. Lin, Y.S. Derbenev, J.M. Grames, J. Guo, V.S. Morozov, E.J-M. Voutier, Y. Zhang, "Exploration of Positron Beams for New Frontier Research" (MOVI04), also the presentation is available at https://www.ipac20.org/fanglei-lin-jlab/ , however, it requires to log into the IPAC20 site.<br />
<br />
==2019==<br />
'''International Workshop on Future Linear Colliders (LCWS 2019) ([http://epx.phys.tohoku.ac.jp/LCWS2019/]) October 28 - November 1, Sendai Japan'''<br />
* Compressed PowerPoint (~19 MB) => [[media:LCWS19_Grames_compressed.pptx]] <br />
<br />
'''2019 Workshop on Polarized Sources, Targets, and Polarimetry (PSTP 2019) ([https://conference.sns.gov/event/139/overview]) September 23-27 2019, Knoxville, TN'''<br />
<br />
J. Yoskowitz, J. Grames, J. Hansknecht, C. Hernandez-Garcia, G. A. Krafft, M. Poelker, R.Suleiman, G. Palacios-Seranno, S. Wijethunga, S. B. Van Der Geer<br />
"New Simulations for Ion-Production and Back-Bombardment in GaAs Photo-guns"<br />
* [[:File:Yoskowitz_PSTP19_Presentation_FINAL_compressed.pptx | Presentation]]<br />
* [[:File:Yoskowitz_PSTP2019_Proceedings_Newest.pdf | Proceedings]]<br />
<br />
'''European Workshop on Photocathodes for Particle Accelerator Applications (EWPAA 2019) ([https://indico.psi.ch/event/6746/page/1353-welcome]) Paul Scherrer Institut, Villigen, Switzerland, from September 11 to 13, 2019'''<br />
* PowerPoint => [[media:EWPAA 2019_poelker.pptx]]<br />
<br />
'''10th International Particle Accelerator Conference (IPAC 2019) ([https://ipac19.org/]) MELBOURNE CONVENTION & EXHIBITION CENTRE, AUSTRALIA, 19 – 24 MAY 2019'''<br />
* PDF => [[media:IPAC 2019_zhang.pdf]]<br />
<br />
==2018==<br />
'''International Workshop on Future Linear Colliders (LCWS 2018) ([http://www.uta.edu/physics/lcws18/index.html]) October 22-26, 2018, University of Texas - Arlington'''<br />
* PowerPoint (37 MB) => [[media:LCWS18_Grames_FINAL.pptx]] <br />
* PDF (40 MB and animation does not work) => [[media:LCWS18_Grames_FINAL.pdf]]<br />
<br />
'''Photocathode Physics for Photoinjectors (P3) Workshop([https://www.lanl.gov/conferences/photocathode-physics-photoinjectors/index.php website]), October 15-17, 2018, Santa Fe, New Mexico'''<br />
* M.A. Mamun, "Magnetized Electron Source for JLEIC Electron Cooler" [[media:2018_P3_JLab Magnetized Gun_mamun.pdf]]<br />
'''Spin 2018 ([http://spin2018.unife.it/ website]) September 10-14, 2018, Ferrara, Italy'''<br />
<br />
'''18th International Conference on Positron Annihilation ([https://www.bgsu.edu/icpa18.html website]), August 19-24, 2018, Orlando, Florida'''<br />
* J. Grames, "Polarized Beams – A Tale of Two Leptons" [[media:ICPA_Grames_FINAL.pptx]]<br />
<br />
'''Electrons for the LHC - LHeC/FCCeh and Perle Workshop ([https://indico.cern.ch/event/698368 website]), June 27-29, 2018'''<br />
* J. Grames, P. Adderley, B. Bullard, J. Hansknecht, C. Hernandez-Garcia, G. Palacios, M. Poelker, D. Moser, M. Stutzman, S. Zhang, "Milliampere beam studies using high polarization photocathodes at the CEBAF Photoinjector" [[media:LHeC18_Grames_Final.pptx]]<br />
<br />
'''9th International Particle Accelerator Conference (IPAC'18), Vancouver, British Columbia, Canada, April 29 to May 4, 2018'''<br />
<br />
* M.A. Mamun, P. Adderley, J. Benesch, B. Bullard, J. Delayen, J. Grames, J. Guo, F. Hannon, J. Hansknecht, C. Hernandez-Garcia, R. Kazimi, G. Krafft, M. Poelker, R. Suleiman, M. Tiefenback, Y. Wang, S. Wijethunga, and S. Zhang, "Production of Magnetized Electron Beam from a DC High Voltage Photogun" [[media:THPMK108_poster_Mamun_IPAC18.pdf]], [[media:THPMK108_Proceedings_Mamun_IPAC18.pdf]]<br />
<br />
* S.A.K. Wijethunga, M.A. Mamun, F.E. Hannon, G.A. Krafft, J. Benesch, R. Suleiman, M. Poelker, J.R. Delayen "Simulation Study of the Magnetized Electron Beam" [[Media:THPAK071_poster_Sajini_IPAC'18.pdf]], [[Media:THPAK071_proceedings_Sajini_IPAC'18.pdf]]<br />
<br />
* F.E.Hannon: "Design of a High Charge, Low Energy, Magnetized Electron Injector" [[Media:THPMK107.pdf]], [[Media:THPMK107_poster.pdf]]<br />
<br />
==2017==<br />
'''International Workshop on Polarized Sources, Targets and Polarimeters (PSTP), Oct 15 - 20, 2017, Daejeon, South Korea'''<br />
* Wei Lui, Matt Poelker, Shukui Zhang, Marcy Stutzman, "Spin Polarization Sensitivity of Electrons Emitted from Bulk GaAs Photocathodes" [[media:PSTP2017_Wei Lui_polarization study bulk GaAs.pptx]]<br />
<br />
* M. Poelker, P. Adderley, J. Benesch, B. Bullard, J. Grames, F. Hannon, J. Hansknecht, C. Hernandez-Garcia, R. Kazimi, G. Krafft, M. A. Mamun, R. Suleiman, M. Tiefenback, S. Zhang, Y. Wang, S. Wijiethunga and J. Yoskovitz, "Magnetized Electron Beam for JLEIC Re-circulator Cooler Ring" [[media:PSTP2017_Poelker_magnetized beam.pptx]], [[media: Proceedings of Science submission, "Magnetized Electron Beam for JLEIC Re-circulator Cooler Ring".pdf]] <br />
<br />
* Joe Grames, Phil Adderley, John Hansknecht, Reza Kazimi, Matt Poelker, Daniel Moser, Marcy Stutzman, R. Suleiman Shukui Zhang "Milliampere beam studies using high polarization photocathodes at the CEBAF Photoinjector" [[media:PSTP2017_Grames_v1.pptx]] [[media:PSTP2017_Grames_Final.pdf]]<br />
<br />
'''International Workshop on Physics with Positrons @ JLab (JPOS), Sep 12 - 15, 2017, Jefferson Lab, Newport News, VA'''<br />
* [[media:Larry Cardman_The PEPPo method for polarized positrons and PEPPo II.pptx]]<br />
* [https://aip.scitation.org/toc/apc/1970/1?Track=CPPERP1970&dm_i=2FAM%2C197ME%2C8DZK6R%2C40LG2%2C1&expanded=1970 AIP Conf. Proc. 1970]<br />
<br />
'''NSTAR 2017, the 11th International Workshop on the Physics of Excited Nucleons,, August 20-23, 2017, University of South Carolina, Columbia, SC''' [http://nstar2017.physics.sc.edu/ Scientific Program]<br />
* J. Grames [[media:NSTAR_Grames_Final.pptx]]<br />
<br />
==2016==<br />
'''Photocathode Physics for Photoinjectors, October 17-19, 2016, JLab'''<br />
* M. A. Mamun, "Study of bialkali antimonide photocathode on Niobium substrate" [[media:Mamun Nb substrate.pptx]]<br />
* W. Liu, "The effects of ion bombardment on bulk GaAs photocathodes with different surface-cleavage planes" [[media:Ion bombardment.pptx]] <br />
<br />
'''2016 Fall Meeting of the APS Division of Nuclear Physics, Vancouver BC, Canada, 13-16 October 2016'''<br />
* B. Hardy and J. Grames, "Magneto-Optic Kerr Effect in a Magnetized Electron Gun" [[media:HardyDNP.pptx]] [[media:HardyDNP.pdf]]<br />
* D. Brakman, C. Cuevas, G.P. Gilfoyle, J. Grames, B. Gunning, "Uniformly Rastering an Electron Beam on a Polarized Cryotarget" [[media:BrakmanDNP.pptx]] [[media:BrakmanDNP.pdf]]<br />
<br />
'''28th Linear Accelerator Conference, LINAC 16, East Lansing, Michigan, 25-30 September 2016'''<br />
* M. Drury, G. Eremeev, J. Grames, R. Kazimi, M. Poelker, J. Preble, R. Suleiman, Y. Wang, M. Wright, "4 K SRF Operation of the 10 MeV CEBAF Photo-Injector" [[media:MOLPR010_proceedings.pdf]] [[media:MOLPR010_poster.ppt]]<br />
<br />
'''SPIN 2016, Urbana-Champaign, 26-30 September 2016'''<br />
* M. Poelker "12 GeV CEBAF: Accelerator Systems and Polarized Beams" [[media:SPIN2016_Poelker_12GeV CEBAF.pdf]] or view ppt file at https://indico.cern.ch/event/570680/contributions/2308608/<br />
* J. Grames, "Production of Highly Polarized Positrons Using MeV Energy Polarized Electrons" presentation [[media:SPIN_Grames_Final.pptx]] and proceedings [[media:Spin2016Grames.pdf]]<br />
* T. Gay, "High-Precision 5-MeV Mott Polarimetry at the JLab Injector", SPIN 2016 @ UIUC, Sep 26-30, 2016 [[media:SPIN16_Gay.pdf]]<br />
<br />
'''ECT Workshop: Physics beyond the standard model and precision nucleon structure , Trento, Italy, 1-5 August, 2016'''<br />
* A. Freyberger, "CEBAF Polarized Beam for Parity Violation Experiments in the 12 GeV era" [[media:ECT2016_APF.pdf]]<br />
<br />
'''7th International Particle Accelerator Conference, BEXCO, Busan, Korea, 8-13 May 2016'''<br />
* R. Kazimi, J. M. Grames, J. Hansknecht, A. Hofler, G. Lahti, T. E. Plawski, M. Poelker, R. Suleiman, Y. Wang, "Four Beam Generation for Simultaneous Four-Hall Operation at CEBAF" [[media:THPOY060-Final.PDF]] [[media:THPOY060_poster.pdf]] [http://accelconf.web.cern.ch/AccelConf/ipac2016/papers/thpoy060.pdf Proceedings]<br />
<br />
'''APS April Meeting, Salt Lake City Utah, 16-19 April 2016'''<br />
* M. Poelker, "Polarized electrons for parity violation experiments at Jefferson Lab" [[media:poelker APS mtg slides.pptx]]<br />
<br />
==2015==<br />
'''Polarized Sources, Targets and Polarimetry Workshop (PSTP'15), Bochum, Germany, September 14-18, 2015'''<br />
* J. Grames, "A Low-Energy Source of Highly Spin-Polarized Positrons" [[Media:PSTP15_Grames.docx]]<br />
* M. Poelker, "Ongoing efforts to construct a 350 kV dc high voltage photogun with inverted insulator geometry" [[Media:PSTP15_poelker_building a 350kV gun.pptx]]<br />
<br />
'''Accelerator Operations Retreat, Jefferson Lab, July 15-17, 2015'''<br />
* J. Grames, "Laser and Injector Upgrade for 4-Hall Operations" [[Media:OpsRetreat15_Grames.pptx]]<br />
<br />
'''Intense Electron Beams Workshop, Cornell Unversity, June 17-19, 2015'''<br />
* J. Grames, "High Current Polarized Electron Sources" [[Media:IEB_Grames_Final.pptx]]<br />
* J. Grames, "Convener Summary - Electrons Sources and Polarimeters" [[Media:IEB_Technology_Grames.pptx]]<br />
* J. Grames, "Plenary Open Topics - PEPPo" [[Media:IEB_PEPPo_Grames.pptx]]<br />
<br />
'''IPAC2015, Richmond, VA May 3-9, 2015'''<br />
* M.L.Stutzman, P.A.Adderley, M.Poelker, Md.A.Mamun "Vacuum Characterization and Improvement for the Jefferson Lab Polarized Electron Source" [[Media:StutzmanPosterIPAC2015.pptx]] [[Media:StutzmanProceedingsIPAC2015.docx]] <br />
<br />
'''IPAC2015, Richmond, VA May 3-9, 2015'''<br />
* S.Zhang, M.L.Stutzman, M.Poelker, Y. Chen, and A. Moy, "Observation of Significant Quantum Efficiency Enhancement from a Polarized Photocathode with Distributed Brag reflector" [[Media:SZhangPosterIPAC2015.pdf]] [[Media:SZhangProceedingsIPAC2015.pdf]]<br />
<br />
'''IPAC2015, Richmond, VA May 3-9, 2015'''<br />
* A. Adeyemi, J. Grames, R. Suleiman for the PEPPo Collaboration, "PEPPo: Using a Polarized Electron Beam to Produce Polarized Positrons" [[Media:AdeyemiPosterIPAC2015.pdf]] [[Media:AdeyemiProceedingsIPAC2015.pdf]]<br />
<br />
==2014==<br />
''' VII Congreso Internacional de Ingeniería Física, November 24 - 28, 2014, Universidad Autónoma Metropolitana, Ciudad de México'''<br />
* M. Poelker, "Future Trends for Photoelectron Guns at Accelerators" [[Media:Electron Guns at Jefferson Lab.pptx]]<br />
<br />
'''Proton Ring EDM Collaboration Meeting, November 10 - 11, 2014, Brookhaven National Lab'''<br />
* M. Poelker, "High Voltage Studies at Jefferson Lab" [[Media:Can our experience building DC high voltage photoguns help the Proton Ring EDM effort?.pptx]]<br />
<br />
'''P3 Workshop, November 3 - 5, Lawrence Berkeley National Laboratory, Berkeley, CA USA'''<br />
P3 = Physics of Photocathodes for Photoinjectors [https://sites.google.com/a/lbl.gov/photocathode-physics-for-photoinjectors/announcement]<br />
* R. Mammei, M. Poelker, "Performance of alkali-antimonide photocathodes inside a JLab dc high voltage photogun" [[Media:CsK2Sb lifetime studies_P3.pptx]]<br />
* M.A. Mamun, M. Poelker, "Alkali-antimonide photocathodes using co-deposition and an effusion source" [[Media:Bi-alkali photocathodes and effusion source_P3.pptx]] <br />
<br />
<br />
'''41st ICMCTF, April 28 - May 2, 2014, San Diego, CA, USA'''<br />
* M.A.Mamun, E. Forman, R. Taus, M. Poelker, A.A. Elmustafa, "Evaluation of TiN-Coated Aluminum Electrodes for DC High Voltage Electron Guns" [[Media:Mamun_ICMCTF Conference_SanDiego_4_28_14.pptx]] <br />
<br />
'''Electron Ion Collider Workshop, March 17-21, 2014, Jefferson Lab'''<br />
* C. Hernandez-Garcia, J. Hansknecht, M. Poelker, "Status of the JLab 500 kV Inverted Gun"<br />
<br />
'''Electron Ion Collider Workshop, March 17-21, 2014, Jefferson Lab'''<br />
* J. Grames, P. Adderley, T. Gay, J. Hansknecht, C. Horowitz, M. McHugh, A. Opper, M.Poelker, X. Roca-Maza, C.Sinclair, M. Stutzman, R. Suleiman, "Precision Test of Mott Polarimetry in the MeV Energy Range"<br />
<br />
'''Electron Ion Collider Workshop, March 17-21, 2014, Jefferson Lab'''<br />
* J. Grames on behalf of PEPPo Collaboration "Polarized Electrons for Polarized Positrons: A Proof-of-Principle Experiment"<br />
<br />
'''Electron Ion Collider Workshop, March 17-21, 2014, Jefferson Lab'''<br />
* R. Suleiman, P. Adderley, J. Clark, S. Covert, J. Grames, J. Hansknecht, M.Poelker, M. Stutzman, "Operation of Jefferson Lab Polarized Electron Sources at High Currents"<br />
- Talk: [[Media:WEYAUD2_talk.pdf]] [[Media:WEYAUD2_talk.ppt]] <br />
- Proceedings: [[Media:WEYAUD2.pdf]] [[Media:WEYAUD2.docx]]<br />
<br />
==2013==<br />
<br />
'''XVth International Workshop on Polarized Sources, Targets, and Polarimetry''' [http://faculty.virginia.edu/PSTP2013/ Workshop Website]<br />
* J. Grames, on behalf of PEPPo Collaboration "Polarized Electrons for Polarized Positrons: A Proof-of-Principle Experiment" <br />
<br />
'''XVth International Workshop on Polarized Sources, Targets, and Polarimetry''' [http://faculty.virginia.edu/PSTP2013/ Workshop Website]<br />
* J. Grames, M. McHugh, C. Horowitz, M. Melnitchouk, A. Opper, M. Poelker, S. Rhodes, X. Roca-Maza, C. Sinclair, R. Suleiman, "Mott polarimeter upgrade at Jefferson Lab" [[Media:PSTP2013_Grames McHugh.pdf|PDF]]<br />
<br />
'''IPAC 2013, May 12-17, Shanghai, China'''<br />
* E. Voutier on behalf of the PEPPo Collaboration, "The Proof-of-Principle Experiment PEPPo"<br />
<br />
'''IPAC 2013, May 12-17, Shanghai, China'''<br />
* O. Dadoun, E. Froidefond, E. Voutier on behalf of the PEPPo Collaboration, "Characterization of the Analyzing Target of the PEPPo Experiment"<br />
<br />
'''IPAC 2013, May 12-17, Shanghai, China'''<br />
* A. Adeyemi, E. Voutier on behalf of the PEPPo Collaboration, "The Calibration of the PEPPo Polarimeter for Electrons and Positrons"<br />
<br />
'''PEB2013, Workshop to Explore Physics Opportunities with Intense, Polarized Electron Beams''' [http://web.mit.edu/lns/PEB_Workshop/ Workshop Website] [http://www.flickr.com/photos/rcowan/sets/72157633050445370/ Workshop photos]<br />
*M. Poelker, "High Current Polarized Electron Source" [[Media:MIT_PEBworkshop_poelker.pptx|PPTX]], [[Media:MIT_PEBworkshop_poelker.pdf|PDF]]<br />
<br />
== 2007 ==<br />
'''IPAC 2007, Albuquerque, New Mexico'''<br />
* J. Grames, P. Adderley, J. Brittian, J. Clark, J. Hansknecht, D. Machie, M.Poelker, M.L. Stutzman, R. Suleiman, K. Surles-Law, "LIFETIME MEASUREMENTS OF HIGH POLARIZATION STRAINEDSUPERLATTICE GALLIUM ARSENIDE AT BEAM CURRENT >1 MILLIAMP USING A NEW 100kV LOAD LOCK PHOTOGUN", Proceedings of PAC07, Albuquerque, New Mexico, USA, THPMS064 [[media:THPMS064.PDF]]<br />
<br />
<br />
<br />
== 1997 - 2012 ==<br />
Until this section updated please refer to '''[http://www.jlab.org/accel/inj_group/index.html Old CIS Homepage]'''</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=CIS_Conference_and_Workshop_Proceedings&diff=29621CIS Conference and Workshop Proceedings2023-04-11T16:23:58Z<p>Gabrielp: </p>
<hr />
<div>==2022==<br />
<br />
'''DILO 7th ANNUAL SF6 GAS MANAGEMENT SEMINAR, Tampa, FL. Nov 8-9, 2022''' [https://dilo.com/trainings-seminars/information-registration]<br />
* C. Hernandez-Garcia invited to present a 20-minute talk: [[Media:Carlos' Jefferson Lab SF6 use in power suppliess for accelerators.pptx]]<br />
<br />
'''EWPAA 2022: European Workshop on Photocathodes for Particle Accelerator Applications, INFN, Milan, Italy, September 20-22, 2022''' [https://agenda.infn.it/event/29956/]<br />
* C. Hernandez-Garcia, et al., "JLab DC gun developments", [[Media:JLab DC gun developments Hernandez-Garcia EWPAA 2022.pptx]]<br />
<br />
'''66th ICFA Advanced Beam Dynamics Workshop on Energy Recovery Linacs (ERL2022) - Cornell University, Oct 3-6''' [https://indico.him.uni-mainz.de/event/108/]<br />
* J. Grames (invited) "Spin polarized electron beam sources for high current"<br />
<br />
'''Workshop on Polarized Sources Targets and Polarimetry (PSTP22) - Mainz, Germany, Sept 26-29 2022''' [https://indico.him.uni-mainz.de/event/108/]<br />
* G. Palacios-Serrano, C. Hernandez-Garcia, and M. Poelker, "Wien-filter spin rotator with integrated ion pump" [[media: PSTP2022_018(1).pdf]] [[link: https://pos.sissa.it/433/018/]]<br />
* J. Grames, "Spin Polarized Positron Beam Upgrade for Jefferson Lab", [[media:SpinPolarizedPositrons_PSTP2022_Abstract.docx|Abstract]] [[media:Grames-PSTP-FINAL.pptx|Slides]]<br />
<br />
'''North American Particle Accelerator Conference (NA-PAC'22) - Albuquerque, New Mexico 7-12 August 2022''' [https://attend.ieee.org/napac-2022/ NA PAC 2022]<br />
* G. Palacios-Serrano, C. Hernandez-Garcia, P. Adderley, D. Bullard, J. Grames, and M. Poelker, "High-gradient Wien spin rotators at Jefferson Lab", [[Media:WEP20 Palacios Serrano High gradient Wien filters.docx]]<br />
* C. Hernandez-Garcia, G. Palacios-Serran, J. GRames, and M. Poelker, "A 500 KV INVERTED GEOEMTRY FEEDTHROUGH FOR A HIGH VOLT-AGE DC ELECTRON GUN, [[Media:WEPA16.docx]], [[Media:WEEP16 Poster Hernandez-Garcia 500 kV feedthrough.pptx]]<br />
* M.A. Mamun, S.A.K. Wijethunga, R. Suleiman, C. Hernandez-Garcia, B. Bullard, J. R. Delayen, J. Grames, G. A. Krafft, G. Palacios-Serrano, and M. Poelker, "Improved Electrostatic Design of the Jefferson Lab 300 KV DC Photogun and the Minimization of Beam Deflection",[[media:Abstract_NAPAC2022_Gun_Redesign_&_Beam_Deflection_Mamun.docx | Abstract (talk)]] <br />
<!--* M.A. Mamun, J. Guo, B.F. Roberts, R. Suleiman, H. Wang, M. Poelker, G. Park, J. Henry, and R. A. Rimmer, "TE011 Cavity for Monitoring Magnetic Momentum of a Magnetized Beam",[[media:Abstract_NAPAC2022_TE011_Cavity_Mamun.docx | Abstract (poster)]] <br />
--><br />
* R. Suleiman, V. S. Morozov, Ya. S. Derbenev, "Measuring the Electric Dipole Moment of the Electron in a Two-energy Spin-Transparent Storage Ring", [[media:NAPAC22_eEDM_abstract.docx | Abstract]] <br />
* M. Bruker, R. Bachimanchi, J. Grames, M. McCaughan, J. Musson, T. Plawski, M. Poelker, T. Powers, H. Wang, Y. Wang: "Operational Experience of the New Booster Cryomodule at the Upgraded Injector Test Facility". [[media:PAC 2022 Max Abstract.pdf | Abstract]]<br />
* M. Bruker, J. Grames, C. Hernandez-Garcia, V. M. Lizárraga-Rubio, M. Poelker, C. A. Valerio-Lizárraga and J. T. Yoskowitz "New Results at JLab Describing Operating Lifetime of GaAs Photo-guns" [[media:Grames-NAPAC-v3.docx | Abstract]] <br />
<br />
'''13th International Particle Accelerator Conference (IPAC’22) - Bangkok, Thailand on 12-17 June 2022''' [https://www.ipac22.org IPAC 2022]<br />
*S. Habet, R. Bodenstein, A. Bogacz , J. Grames, A. Hofler, R. Kazimi, V. Kostrun , F. Lin, Y. Roblin, K. Smolenski, M. Stefani, R. Suleiman, A. Sy, D. Turner, A. Ushakov, C.A. Valerio-Lizarraga, E. Voutier, Y. Zhang, "CW polarized positron beams for 12 GeV CEBAF" [[media:IPAC22-Positrons-abstract.pdf]]<br />
<br />
* S. Zhang,...<br />
<br />
* S. Pokharel, G. A. Krafft, A. S. Hofler, R. Kazimi, M. Bruker, J. Grames, S. Zhang, "CEBAF Injector for KL Beam Conditions" [[media:MOPOTK052.PDF]] [[media:MOPOTK052.pptx]]<br />
<br />
* S. Pokharel, G. A. Krafft, A. S. Hofler, "Modeling a Nb3Sn Cryounit in GPT at UITF" [[media:MOPOTK051.PDF]] [[media:MOPOTK051.pptx]]<br />
<br />
'''J-Future Workshop, Jefferson Lab / Messina University, 28-30 March 2022''' [https://indico.jlab.org/event/520/ workshop website link]<br />
* J. Grames "Ce+BAF : Considerations and Prospects for Polarized (and unpolarized) Positron Beams" [[media:J-Future-Grames.pdf]] [[media:J-Future-Grames-Final.pptx]]<br />
<br />
'''Snowmass Polarized Positron Sources Workshop, March 1, 2022''' [https://indico.fnal.gov/event/52959/]<br />
<br />
* J. Grames, "Polarized positron source program at JLab"<br />
** slides - [[media:Grames-Positron-FINAL.pptx]]<br />
** contribution - [[media:Snowmass_Positron_Grames_Final.docx]]<br />
<br />
'''Snowmass Electron Source Workshop, February 16-18, 2022''' [https://indico.fnal.gov/event/46053/]<br />
<br />
* M. Poelker, "Cathode technologies to produce highly spin-polarized electron beams" [[media:snowmass_cathode technologies_poelker.pptx]]<br />
<br />
* J. Grames, "Capability and Prospects for Polarized Beams from GaAs DC Photogun" [[media:Grames_Snowmass2021_FINAL.pptx]]<br />
<br />
==2021==<br />
'''IEEE Conference on Electrical Insulation and Dielectric Phenomena, Vancouver, BC, Canada, December 12-15''' [https://ceidp.org IEEE CEIDP 2021]<br />
<br />
*C. Hernandez-Garcia, G. Palacios-Serrano, P. Adderley, D. Bullard, J. Grames, M. A. Mamun1, M. Poelker, M. Stutzman, R. Suleiman, Y. Wang, and S.A.K. Wijethunga "Inverted Geometry Ceramic Insulators in High Voltage DC Electron Guns for Accelerators" [[Media:Inv insulators paper published 2021 IEEE conf on elec insu and deil phenomena.pdf]]<br />
<br />
'''Photocathode Physics for Photoinjectors, SLAC, November 10-12, 2021''' [https://conf.slac.stanford.edu/photocathode-physics-photoinjectors-2021/ P3 Workshop]<br />
<br />
'''AVS Symposium, Charlotte NC, October 24-29'''<br />
<br />
'''24th International Symposium on Spin Physics (SPIN2021) October 18-22, 2021, Matsue, Japan - https://indico2.riken.jp/event/3082/'''<br />
<br />
* J. M. Grames, C. K. Sinclair, M. Poelker, X. Roca-Maza, M. L. Stutzman, R. Suleiman, Md. A. Mamun, M. McHugh, D. Moser, J. Hansknecht, B. Moffit and T. J. Gay "High Precision 5 MeV Mott Polarimeter" [[media:Grames-Spin2021.docx]] [[media:Grames_SPIN2021.pdf]] [[media:SPIN2021-GRAMES-103.pdf]]<br />
<br />
* M. Stefani and B. van der Geer, [[media:SPIN2021_Stefani.pdf | New Spin Tracking Software Developed For General Particle Tracer]], SPIN 2021<br />
<br />
* R. Suleiman, "EDM in Small Rings": [[media:EDM_SmallRings_Suleiman_Spin2021.pdf]]<br />
<br />
<br />
'''Mini-Symposium Advancements and Opportunities of Polarized Targets and Beams [http://web.mit.edu/dnp2021/index.html APS DNP Meeting, Boston Oct 11-14, 2021]'''<br />
<br />
* Shukui ?<br />
<br />
'''12th International Particle Accelerator Conference - IPAC’21, May 24-28, 2021''' https://www.ipac21.org/#<br />
<br />
* G. Palacios, P. Adderley, H. Baumgart, J. Benesch, D. Bullard, J. Grames, C. Hernandez-Garcia, A. Hofler, D. Machie, M. Poelker, M. Stutzman and R. Suleiman, "A 200 keV Wien Filter Spin Rotator Design and High Voltage Evaluation" [[Media:Gabriel Palacios Wien filter Abstract IPAC21 FINAL.docx | Abstract]][[Media:IPAC_2021_poster_slides_final_Gabriel_Palacios.pptx | Poster]] [[Media:Mopab324(1).pdf | Proceedings]]<br />
<br />
* J. T. Yoskowitz , G. A. Krafft, G. Palacios-Serrano, S. Wijethunga, J. Grames, J. Hansknecht, C. Hernandez-Garcia, M. Poelker, M. Stutzman, R. Suleiman and S. B. van der Geer, "IMPROVING THE OPERATIONAL LIFETIME OF THE CEBAF PHOTO- GUN BY ANODE BIASING" [[:File:Yoskowitz_IPAC2021_BiasedAnode_Abstract_2.docx | Abstract]] [[:File:WEPAB104.pdf | Proceedings]]<br />
<br />
* J. T. Yoskowitz , G. A. Krafft, S. B. van der Geer, J. Grames, C. A. Valerio Lizarraga "SIMULATING ELECTRON IMPACT IONIZATION USING A GENERAL PARTICLE TRACER (GPT) CUSTOM ELEMENT" [[:File:Yoskowitz_IPAC2021_GPT_Abstract_2.docx | Abstract]] [[:File:WEPAB105.pdf | Proceedings]]<br />
<br />
* S.A.K. Wijethunga , J.R. Delayen, G.A. Krafft , G. Palacios-Serrano, M.A. Mamun, C. Hernandez-Garcia, R. Suleiman, M. Poelker, J. Benesch, "REDESIGN OF THE JEFFERSON LAB -300 kV DC PHOTO-GUN FOR HIGH BUNCH CHARGE OPERATIONS" [[Media:WEPAB092.pdf|Proceedings]] [[Media:REDESIGN OF THE JEFFERSON LAB -300 kV DC PHOTO-GUN FOR HIGH BUNCH CHARGE OPERATIONS_poster.pdf|Poster]] <br />
<br />
* S. A. K. Wijethunga, J. R. Delayen, G. A. Krafft, M. A. Mamun, R. Suleiman, M. Poelker, S. Zhang, J. Benesch, "SPACE CHARGE EFFECT IN LOW ENERGY MAGNETIZED ELEC-TRON BEAM" [[Media:WEPAB093.pdf|Proceedings]] [[Media:SPACE CHARGE EFFECT IN LOW ENERGY MAGNETIZED ELECTRON BEAM_poster.pdf|Poster]] <br />
<br />
* Marcy Stutzman, Charles Hetzel, "Pressure Simulations for the EIC Interaction Region" [[media:WEPAB340.pdf]] [[media:WEPAB340_poster.pdf]]<br />
<br />
'''2021 International Workshop on Future Linear Colliders - LCWS2021, March 15-18, 2021''' https://indico.cern.ch/event/995633/<br />
* Proceedings https://www.slac.stanford.edu/econf/C2103151/<br />
* [[Media:Hernandez-Garcia JLab LCWS 500 kV insulators.pptx]]<br />
<br />
==2020==<br />
<br />
'''2020 Fall Meeting of the APS Division of Nuclear Physics Thursday–Sunday, October 29–November 1 2020'''<br />
:-J. Grames "Highly spin polarized electron and positron beams at a compact accelerator facility"<br />
:Session link: http://meetings.aps.org/Meeting/DNP20/APS_Invited [[media:APSDNP2020-Grames_FINAL_150dpi.pptx]]<br />
<br />
:-N. Trotta, J. Grames, F. Benmokhtar "Simulations of Positron Distributions from a Polarized Electron Beam" (poster), [[media:Trotta_Nicholaus_JA_FINAL.pptx]]<br />
<br />
'''Americas Workshop on Linear Colliders 2020''' (https://agenda.linearcollider.org/event/8622/overview)<br />
<br />
'''CFNS Workshop on Beam Polarization and Polarimetry at EIC ([https://indico.bnl.gov/event/7583/]) June 26, 2020'''<br />
:J. Grames "Production of Polarized Positrons at Jefferson Lab" (slides) [[media:Grames_CNFS_FINAL.pptx]]<br />
:T. Gay "High-Accuracy 5-MeV Mott Polarimetry at the CEBAF Injector" (slides) [[media:EIC Mott Talk v3.pdf]] [[media:EIC Mott Talk v3.pptx]] <br />
<br />
'''[http://ipac2020.vrws.de International Particle Accelerator Conference IPAC'20] (Caen, France, May 2020)'''<br />
: F. Lin, Y.S. Derbenev, J.M. Grames, J. Guo, V.S. Morozov, E.J-M. Voutier, Y. Zhang, "Exploration of Positron Beams for New Frontier Research" (MOVI04), also the presentation is available at https://www.ipac20.org/fanglei-lin-jlab/ , however, it requires to log into the IPAC20 site.<br />
<br />
==2019==<br />
'''International Workshop on Future Linear Colliders (LCWS 2019) ([http://epx.phys.tohoku.ac.jp/LCWS2019/]) October 28 - November 1, Sendai Japan'''<br />
* Compressed PowerPoint (~19 MB) => [[media:LCWS19_Grames_compressed.pptx]] <br />
<br />
'''2019 Workshop on Polarized Sources, Targets, and Polarimetry (PSTP 2019) ([https://conference.sns.gov/event/139/overview]) September 23-27 2019, Knoxville, TN'''<br />
<br />
J. Yoskowitz, J. Grames, J. Hansknecht, C. Hernandez-Garcia, G. A. Krafft, M. Poelker, R.Suleiman, G. Palacios-Seranno, S. Wijethunga, S. B. Van Der Geer<br />
"New Simulations for Ion-Production and Back-Bombardment in GaAs Photo-guns"<br />
* [[:File:Yoskowitz_PSTP19_Presentation_FINAL_compressed.pptx | Presentation]]<br />
* [[:File:Yoskowitz_PSTP2019_Proceedings_Newest.pdf | Proceedings]]<br />
<br />
'''European Workshop on Photocathodes for Particle Accelerator Applications (EWPAA 2019) ([https://indico.psi.ch/event/6746/page/1353-welcome]) Paul Scherrer Institut, Villigen, Switzerland, from September 11 to 13, 2019'''<br />
* PowerPoint => [[media:EWPAA 2019_poelker.pptx]]<br />
<br />
'''10th International Particle Accelerator Conference (IPAC 2019) ([https://ipac19.org/]) MELBOURNE CONVENTION & EXHIBITION CENTRE, AUSTRALIA, 19 – 24 MAY 2019'''<br />
* PDF => [[media:IPAC 2019_zhang.pdf]]<br />
<br />
==2018==<br />
'''International Workshop on Future Linear Colliders (LCWS 2018) ([http://www.uta.edu/physics/lcws18/index.html]) October 22-26, 2018, University of Texas - Arlington'''<br />
* PowerPoint (37 MB) => [[media:LCWS18_Grames_FINAL.pptx]] <br />
* PDF (40 MB and animation does not work) => [[media:LCWS18_Grames_FINAL.pdf]]<br />
<br />
'''Photocathode Physics for Photoinjectors (P3) Workshop([https://www.lanl.gov/conferences/photocathode-physics-photoinjectors/index.php website]), October 15-17, 2018, Santa Fe, New Mexico'''<br />
* M.A. Mamun, "Magnetized Electron Source for JLEIC Electron Cooler" [[media:2018_P3_JLab Magnetized Gun_mamun.pdf]]<br />
'''Spin 2018 ([http://spin2018.unife.it/ website]) September 10-14, 2018, Ferrara, Italy'''<br />
<br />
'''18th International Conference on Positron Annihilation ([https://www.bgsu.edu/icpa18.html website]), August 19-24, 2018, Orlando, Florida'''<br />
* J. Grames, "Polarized Beams – A Tale of Two Leptons" [[media:ICPA_Grames_FINAL.pptx]]<br />
<br />
'''Electrons for the LHC - LHeC/FCCeh and Perle Workshop ([https://indico.cern.ch/event/698368 website]), June 27-29, 2018'''<br />
* J. Grames, P. Adderley, B. Bullard, J. Hansknecht, C. Hernandez-Garcia, G. Palacios, M. Poelker, D. Moser, M. Stutzman, S. Zhang, "Milliampere beam studies using high polarization photocathodes at the CEBAF Photoinjector" [[media:LHeC18_Grames_Final.pptx]]<br />
<br />
'''9th International Particle Accelerator Conference (IPAC'18), Vancouver, British Columbia, Canada, April 29 to May 4, 2018'''<br />
<br />
* M.A. Mamun, P. Adderley, J. Benesch, B. Bullard, J. Delayen, J. Grames, J. Guo, F. Hannon, J. Hansknecht, C. Hernandez-Garcia, R. Kazimi, G. Krafft, M. Poelker, R. Suleiman, M. Tiefenback, Y. Wang, S. Wijethunga, and S. Zhang, "Production of Magnetized Electron Beam from a DC High Voltage Photogun" [[media:THPMK108_poster_Mamun_IPAC18.pdf]], [[media:THPMK108_Proceedings_Mamun_IPAC18.pdf]]<br />
<br />
* S.A.K. Wijethunga, M.A. Mamun, F.E. Hannon, G.A. Krafft, J. Benesch, R. Suleiman, M. Poelker, J.R. Delayen "Simulation Study of the Magnetized Electron Beam" [[Media:THPAK071_poster_Sajini_IPAC'18.pdf]], [[Media:THPAK071_proceedings_Sajini_IPAC'18.pdf]]<br />
<br />
* F.E.Hannon: "Design of a High Charge, Low Energy, Magnetized Electron Injector" [[Media:THPMK107.pdf]], [[Media:THPMK107_poster.pdf]]<br />
<br />
==2017==<br />
'''International Workshop on Polarized Sources, Targets and Polarimeters (PSTP), Oct 15 - 20, 2017, Daejeon, South Korea'''<br />
* Wei Lui, Matt Poelker, Shukui Zhang, Marcy Stutzman, "Spin Polarization Sensitivity of Electrons Emitted from Bulk GaAs Photocathodes" [[media:PSTP2017_Wei Lui_polarization study bulk GaAs.pptx]]<br />
<br />
* M. Poelker, P. Adderley, J. Benesch, B. Bullard, J. Grames, F. Hannon, J. Hansknecht, C. Hernandez-Garcia, R. Kazimi, G. Krafft, M. A. Mamun, R. Suleiman, M. Tiefenback, S. Zhang, Y. Wang, S. Wijiethunga and J. Yoskovitz, "Magnetized Electron Beam for JLEIC Re-circulator Cooler Ring" [[media:PSTP2017_Poelker_magnetized beam.pptx]], [[media: Proceedings of Science submission, "Magnetized Electron Beam for JLEIC Re-circulator Cooler Ring".pdf]] <br />
<br />
* Joe Grames, Phil Adderley, John Hansknecht, Reza Kazimi, Matt Poelker, Daniel Moser, Marcy Stutzman, R. Suleiman Shukui Zhang "Milliampere beam studies using high polarization photocathodes at the CEBAF Photoinjector" [[media:PSTP2017_Grames_v1.pptx]] [[media:PSTP2017_Grames_Final.pdf]]<br />
<br />
'''International Workshop on Physics with Positrons @ JLab (JPOS), Sep 12 - 15, 2017, Jefferson Lab, Newport News, VA'''<br />
* [[media:Larry Cardman_The PEPPo method for polarized positrons and PEPPo II.pptx]]<br />
* [https://aip.scitation.org/toc/apc/1970/1?Track=CPPERP1970&dm_i=2FAM%2C197ME%2C8DZK6R%2C40LG2%2C1&expanded=1970 AIP Conf. Proc. 1970]<br />
<br />
'''NSTAR 2017, the 11th International Workshop on the Physics of Excited Nucleons,, August 20-23, 2017, University of South Carolina, Columbia, SC''' [http://nstar2017.physics.sc.edu/ Scientific Program]<br />
* J. Grames [[media:NSTAR_Grames_Final.pptx]]<br />
<br />
==2016==<br />
'''Photocathode Physics for Photoinjectors, October 17-19, 2016, JLab'''<br />
* M. A. Mamun, "Study of bialkali antimonide photocathode on Niobium substrate" [[media:Mamun Nb substrate.pptx]]<br />
* W. Liu, "The effects of ion bombardment on bulk GaAs photocathodes with different surface-cleavage planes" [[media:Ion bombardment.pptx]] <br />
<br />
'''2016 Fall Meeting of the APS Division of Nuclear Physics, Vancouver BC, Canada, 13-16 October 2016'''<br />
* B. Hardy and J. Grames, "Magneto-Optic Kerr Effect in a Magnetized Electron Gun" [[media:HardyDNP.pptx]] [[media:HardyDNP.pdf]]<br />
* D. Brakman, C. Cuevas, G.P. Gilfoyle, J. Grames, B. Gunning, "Uniformly Rastering an Electron Beam on a Polarized Cryotarget" [[media:BrakmanDNP.pptx]] [[media:BrakmanDNP.pdf]]<br />
<br />
'''28th Linear Accelerator Conference, LINAC 16, East Lansing, Michigan, 25-30 September 2016'''<br />
* M. Drury, G. Eremeev, J. Grames, R. Kazimi, M. Poelker, J. Preble, R. Suleiman, Y. Wang, M. Wright, "4 K SRF Operation of the 10 MeV CEBAF Photo-Injector" [[media:MOLPR010_proceedings.pdf]] [[media:MOLPR010_poster.ppt]]<br />
<br />
'''SPIN 2016, Urbana-Champaign, 26-30 September 2016'''<br />
* M. Poelker "12 GeV CEBAF: Accelerator Systems and Polarized Beams" [[media:SPIN2016_Poelker_12GeV CEBAF.pdf]] or view ppt file at https://indico.cern.ch/event/570680/contributions/2308608/<br />
* J. Grames, "Production of Highly Polarized Positrons Using MeV Energy Polarized Electrons" presentation [[media:SPIN_Grames_Final.pptx]] and proceedings [[media:Spin2016Grames.pdf]]<br />
* T. Gay, "High-Precision 5-MeV Mott Polarimetry at the JLab Injector", SPIN 2016 @ UIUC, Sep 26-30, 2016 [[media:SPIN16_Gay.pdf]]<br />
<br />
'''ECT Workshop: Physics beyond the standard model and precision nucleon structure , Trento, Italy, 1-5 August, 2016'''<br />
* A. Freyberger, "CEBAF Polarized Beam for Parity Violation Experiments in the 12 GeV era" [[media:ECT2016_APF.pdf]]<br />
<br />
'''7th International Particle Accelerator Conference, BEXCO, Busan, Korea, 8-13 May 2016'''<br />
* R. Kazimi, J. M. Grames, J. Hansknecht, A. Hofler, G. Lahti, T. E. Plawski, M. Poelker, R. Suleiman, Y. Wang, "Four Beam Generation for Simultaneous Four-Hall Operation at CEBAF" [[media:THPOY060-Final.PDF]] [[media:THPOY060_poster.pdf]] [http://accelconf.web.cern.ch/AccelConf/ipac2016/papers/thpoy060.pdf Proceedings]<br />
<br />
'''APS April Meeting, Salt Lake City Utah, 16-19 April 2016'''<br />
* M. Poelker, "Polarized electrons for parity violation experiments at Jefferson Lab" [[media:poelker APS mtg slides.pptx]]<br />
<br />
==2015==<br />
'''Polarized Sources, Targets and Polarimetry Workshop (PSTP'15), Bochum, Germany, September 14-18, 2015'''<br />
* J. Grames, "A Low-Energy Source of Highly Spin-Polarized Positrons" [[Media:PSTP15_Grames.docx]]<br />
* M. Poelker, "Ongoing efforts to construct a 350 kV dc high voltage photogun with inverted insulator geometry" [[Media:PSTP15_poelker_building a 350kV gun.pptx]]<br />
<br />
'''Accelerator Operations Retreat, Jefferson Lab, July 15-17, 2015'''<br />
* J. Grames, "Laser and Injector Upgrade for 4-Hall Operations" [[Media:OpsRetreat15_Grames.pptx]]<br />
<br />
'''Intense Electron Beams Workshop, Cornell Unversity, June 17-19, 2015'''<br />
* J. Grames, "High Current Polarized Electron Sources" [[Media:IEB_Grames_Final.pptx]]<br />
* J. Grames, "Convener Summary - Electrons Sources and Polarimeters" [[Media:IEB_Technology_Grames.pptx]]<br />
* J. Grames, "Plenary Open Topics - PEPPo" [[Media:IEB_PEPPo_Grames.pptx]]<br />
<br />
'''IPAC2015, Richmond, VA May 3-9, 2015'''<br />
* M.L.Stutzman, P.A.Adderley, M.Poelker, Md.A.Mamun "Vacuum Characterization and Improvement for the Jefferson Lab Polarized Electron Source" [[Media:StutzmanPosterIPAC2015.pptx]] [[Media:StutzmanProceedingsIPAC2015.docx]] <br />
<br />
'''IPAC2015, Richmond, VA May 3-9, 2015'''<br />
* S.Zhang, M.L.Stutzman, M.Poelker, Y. Chen, and A. Moy, "Observation of Significant Quantum Efficiency Enhancement from a Polarized Photocathode with Distributed Brag reflector" [[Media:SZhangPosterIPAC2015.pdf]] [[Media:SZhangProceedingsIPAC2015.pdf]]<br />
<br />
'''IPAC2015, Richmond, VA May 3-9, 2015'''<br />
* A. Adeyemi, J. Grames, R. Suleiman for the PEPPo Collaboration, "PEPPo: Using a Polarized Electron Beam to Produce Polarized Positrons" [[Media:AdeyemiPosterIPAC2015.pdf]] [[Media:AdeyemiProceedingsIPAC2015.pdf]]<br />
<br />
==2014==<br />
''' VII Congreso Internacional de Ingeniería Física, November 24 - 28, 2014, Universidad Autónoma Metropolitana, Ciudad de México'''<br />
* M. Poelker, "Future Trends for Photoelectron Guns at Accelerators" [[Media:Electron Guns at Jefferson Lab.pptx]]<br />
<br />
'''Proton Ring EDM Collaboration Meeting, November 10 - 11, 2014, Brookhaven National Lab'''<br />
* M. Poelker, "High Voltage Studies at Jefferson Lab" [[Media:Can our experience building DC high voltage photoguns help the Proton Ring EDM effort?.pptx]]<br />
<br />
'''P3 Workshop, November 3 - 5, Lawrence Berkeley National Laboratory, Berkeley, CA USA'''<br />
P3 = Physics of Photocathodes for Photoinjectors [https://sites.google.com/a/lbl.gov/photocathode-physics-for-photoinjectors/announcement]<br />
* R. Mammei, M. Poelker, "Performance of alkali-antimonide photocathodes inside a JLab dc high voltage photogun" [[Media:CsK2Sb lifetime studies_P3.pptx]]<br />
* M.A. Mamun, M. Poelker, "Alkali-antimonide photocathodes using co-deposition and an effusion source" [[Media:Bi-alkali photocathodes and effusion source_P3.pptx]] <br />
<br />
<br />
'''41st ICMCTF, April 28 - May 2, 2014, San Diego, CA, USA'''<br />
* M.A.Mamun, E. Forman, R. Taus, M. Poelker, A.A. Elmustafa, "Evaluation of TiN-Coated Aluminum Electrodes for DC High Voltage Electron Guns" [[Media:Mamun_ICMCTF Conference_SanDiego_4_28_14.pptx]] <br />
<br />
'''Electron Ion Collider Workshop, March 17-21, 2014, Jefferson Lab'''<br />
* C. Hernandez-Garcia, J. Hansknecht, M. Poelker, "Status of the JLab 500 kV Inverted Gun"<br />
<br />
'''Electron Ion Collider Workshop, March 17-21, 2014, Jefferson Lab'''<br />
* J. Grames, P. Adderley, T. Gay, J. Hansknecht, C. Horowitz, M. McHugh, A. Opper, M.Poelker, X. Roca-Maza, C.Sinclair, M. Stutzman, R. Suleiman, "Precision Test of Mott Polarimetry in the MeV Energy Range"<br />
<br />
'''Electron Ion Collider Workshop, March 17-21, 2014, Jefferson Lab'''<br />
* J. Grames on behalf of PEPPo Collaboration "Polarized Electrons for Polarized Positrons: A Proof-of-Principle Experiment"<br />
<br />
'''Electron Ion Collider Workshop, March 17-21, 2014, Jefferson Lab'''<br />
* R. Suleiman, P. Adderley, J. Clark, S. Covert, J. Grames, J. Hansknecht, M.Poelker, M. Stutzman, "Operation of Jefferson Lab Polarized Electron Sources at High Currents"<br />
- Talk: [[Media:WEYAUD2_talk.pdf]] [[Media:WEYAUD2_talk.ppt]] <br />
- Proceedings: [[Media:WEYAUD2.pdf]] [[Media:WEYAUD2.docx]]<br />
<br />
==2013==<br />
<br />
'''XVth International Workshop on Polarized Sources, Targets, and Polarimetry''' [http://faculty.virginia.edu/PSTP2013/ Workshop Website]<br />
* J. Grames, on behalf of PEPPo Collaboration "Polarized Electrons for Polarized Positrons: A Proof-of-Principle Experiment" <br />
<br />
'''XVth International Workshop on Polarized Sources, Targets, and Polarimetry''' [http://faculty.virginia.edu/PSTP2013/ Workshop Website]<br />
* J. Grames, M. McHugh, C. Horowitz, M. Melnitchouk, A. Opper, M. Poelker, S. Rhodes, X. Roca-Maza, C. Sinclair, R. Suleiman, "Mott polarimeter upgrade at Jefferson Lab" [[Media:PSTP2013_Grames McHugh.pdf|PDF]]<br />
<br />
'''IPAC 2013, May 12-17, Shanghai, China'''<br />
* E. Voutier on behalf of the PEPPo Collaboration, "The Proof-of-Principle Experiment PEPPo"<br />
<br />
'''IPAC 2013, May 12-17, Shanghai, China'''<br />
* O. Dadoun, E. Froidefond, E. Voutier on behalf of the PEPPo Collaboration, "Characterization of the Analyzing Target of the PEPPo Experiment"<br />
<br />
'''IPAC 2013, May 12-17, Shanghai, China'''<br />
* A. Adeyemi, E. Voutier on behalf of the PEPPo Collaboration, "The Calibration of the PEPPo Polarimeter for Electrons and Positrons"<br />
<br />
'''PEB2013, Workshop to Explore Physics Opportunities with Intense, Polarized Electron Beams''' [http://web.mit.edu/lns/PEB_Workshop/ Workshop Website] [http://www.flickr.com/photos/rcowan/sets/72157633050445370/ Workshop photos]<br />
*M. Poelker, "High Current Polarized Electron Source" [[Media:MIT_PEBworkshop_poelker.pptx|PPTX]], [[Media:MIT_PEBworkshop_poelker.pdf|PDF]]<br />
<br />
== 2007 ==<br />
'''IPAC 2007, Albuquerque, New Mexico'''<br />
* J. Grames, P. Adderley, J. Brittian, J. Clark, J. Hansknecht, D. Machie, M.Poelker, M.L. Stutzman, R. Suleiman, K. Surles-Law, "LIFETIME MEASUREMENTS OF HIGH POLARIZATION STRAINEDSUPERLATTICE GALLIUM ARSENIDE AT BEAM CURRENT >1 MILLIAMP USING A NEW 100kV LOAD LOCK PHOTOGUN", Proceedings of PAC07, Albuquerque, New Mexico, USA, THPMS064 [[media:THPMS064.PDF]]<br />
<br />
<br />
<br />
== 1997 - 2012 ==<br />
Until this section updated please refer to '''[http://www.jlab.org/accel/inj_group/index.html Old CIS Homepage]'''</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=CIS_Conference_and_Workshop_Proceedings&diff=29620CIS Conference and Workshop Proceedings2023-04-11T16:22:54Z<p>Gabrielp: </p>
<hr />
<div>==2022==<br />
<br />
'''DILO 7th ANNUAL SF6 GAS MANAGEMENT SEMINAR, Tampa, FL. Nov 8-9, 2022''' [https://dilo.com/trainings-seminars/information-registration]<br />
* C. Hernandez-Garcia invited to present a 20-minute talk: [[Media:Carlos' Jefferson Lab SF6 use in power suppliess for accelerators.pptx]]<br />
<br />
'''EWPAA 2022: European Workshop on Photocathodes for Particle Accelerator Applications, INFN, Milan, Italy, September 20-22, 2022''' [https://agenda.infn.it/event/29956/]<br />
* C. Hernandez-Garcia, et al., "JLab DC gun developments", [[Media:JLab DC gun developments Hernandez-Garcia EWPAA 2022.pptx]]<br />
<br />
'''66th ICFA Advanced Beam Dynamics Workshop on Energy Recovery Linacs (ERL2022) - Cornell University, Oct 3-6''' [https://indico.him.uni-mainz.de/event/108/]<br />
* J. Grames (invited) "Spin polarized electron beam sources for high current"<br />
<br />
'''Workshop on Polarized Sources Targets and Polarimetry (PSTP22) - Mainz, Germany, Sept 26-29 2022''' [https://indico.him.uni-mainz.de/event/108/]<br />
* G. Palacios-Serrano, C. Hernandez-Garcia, and M. Poelker, "Wien-filter spin rotator with integrated ion pump" [[media: PSTP2022_018(1).pdf]]<br />
* J. Grames, "Spin Polarized Positron Beam Upgrade for Jefferson Lab", [[media:SpinPolarizedPositrons_PSTP2022_Abstract.docx|Abstract]] [[media:Grames-PSTP-FINAL.pptx|Slides]]<br />
<br />
'''North American Particle Accelerator Conference (NA-PAC'22) - Albuquerque, New Mexico 7-12 August 2022''' [https://attend.ieee.org/napac-2022/ NA PAC 2022]<br />
* G. Palacios-Serrano, C. Hernandez-Garcia, P. Adderley, D. Bullard, J. Grames, and M. Poelker, "High-gradient Wien spin rotators at Jefferson Lab", [[Media:WEP20 Palacios Serrano High gradient Wien filters.docx]]<br />
* C. Hernandez-Garcia, G. Palacios-Serran, J. GRames, and M. Poelker, "A 500 KV INVERTED GEOEMTRY FEEDTHROUGH FOR A HIGH VOLT-AGE DC ELECTRON GUN, [[Media:WEPA16.docx]], [[Media:WEEP16 Poster Hernandez-Garcia 500 kV feedthrough.pptx]]<br />
* M.A. Mamun, S.A.K. Wijethunga, R. Suleiman, C. Hernandez-Garcia, B. Bullard, J. R. Delayen, J. Grames, G. A. Krafft, G. Palacios-Serrano, and M. Poelker, "Improved Electrostatic Design of the Jefferson Lab 300 KV DC Photogun and the Minimization of Beam Deflection",[[media:Abstract_NAPAC2022_Gun_Redesign_&_Beam_Deflection_Mamun.docx | Abstract (talk)]] <br />
<!--* M.A. Mamun, J. Guo, B.F. Roberts, R. Suleiman, H. Wang, M. Poelker, G. Park, J. Henry, and R. A. Rimmer, "TE011 Cavity for Monitoring Magnetic Momentum of a Magnetized Beam",[[media:Abstract_NAPAC2022_TE011_Cavity_Mamun.docx | Abstract (poster)]] <br />
--><br />
* R. Suleiman, V. S. Morozov, Ya. S. Derbenev, "Measuring the Electric Dipole Moment of the Electron in a Two-energy Spin-Transparent Storage Ring", [[media:NAPAC22_eEDM_abstract.docx | Abstract]] <br />
* M. Bruker, R. Bachimanchi, J. Grames, M. McCaughan, J. Musson, T. Plawski, M. Poelker, T. Powers, H. Wang, Y. Wang: "Operational Experience of the New Booster Cryomodule at the Upgraded Injector Test Facility". [[media:PAC 2022 Max Abstract.pdf | Abstract]]<br />
* M. Bruker, J. Grames, C. Hernandez-Garcia, V. M. Lizárraga-Rubio, M. Poelker, C. A. Valerio-Lizárraga and J. T. Yoskowitz "New Results at JLab Describing Operating Lifetime of GaAs Photo-guns" [[media:Grames-NAPAC-v3.docx | Abstract]] <br />
<br />
'''13th International Particle Accelerator Conference (IPAC’22) - Bangkok, Thailand on 12-17 June 2022''' [https://www.ipac22.org IPAC 2022]<br />
*S. Habet, R. Bodenstein, A. Bogacz , J. Grames, A. Hofler, R. Kazimi, V. Kostrun , F. Lin, Y. Roblin, K. Smolenski, M. Stefani, R. Suleiman, A. Sy, D. Turner, A. Ushakov, C.A. Valerio-Lizarraga, E. Voutier, Y. Zhang, "CW polarized positron beams for 12 GeV CEBAF" [[media:IPAC22-Positrons-abstract.pdf]]<br />
<br />
* S. Zhang,...<br />
<br />
* S. Pokharel, G. A. Krafft, A. S. Hofler, R. Kazimi, M. Bruker, J. Grames, S. Zhang, "CEBAF Injector for KL Beam Conditions" [[media:MOPOTK052.PDF]] [[media:MOPOTK052.pptx]]<br />
<br />
* S. Pokharel, G. A. Krafft, A. S. Hofler, "Modeling a Nb3Sn Cryounit in GPT at UITF" [[media:MOPOTK051.PDF]] [[media:MOPOTK051.pptx]]<br />
<br />
'''J-Future Workshop, Jefferson Lab / Messina University, 28-30 March 2022''' [https://indico.jlab.org/event/520/ workshop website link]<br />
* J. Grames "Ce+BAF : Considerations and Prospects for Polarized (and unpolarized) Positron Beams" [[media:J-Future-Grames.pdf]] [[media:J-Future-Grames-Final.pptx]]<br />
<br />
'''Snowmass Polarized Positron Sources Workshop, March 1, 2022''' [https://indico.fnal.gov/event/52959/]<br />
<br />
* J. Grames, "Polarized positron source program at JLab"<br />
** slides - [[media:Grames-Positron-FINAL.pptx]]<br />
** contribution - [[media:Snowmass_Positron_Grames_Final.docx]]<br />
<br />
'''Snowmass Electron Source Workshop, February 16-18, 2022''' [https://indico.fnal.gov/event/46053/]<br />
<br />
* M. Poelker, "Cathode technologies to produce highly spin-polarized electron beams" [[media:snowmass_cathode technologies_poelker.pptx]]<br />
<br />
* J. Grames, "Capability and Prospects for Polarized Beams from GaAs DC Photogun" [[media:Grames_Snowmass2021_FINAL.pptx]]<br />
<br />
==2021==<br />
'''IEEE Conference on Electrical Insulation and Dielectric Phenomena, Vancouver, BC, Canada, December 12-15''' [https://ceidp.org IEEE CEIDP 2021]<br />
<br />
*C. Hernandez-Garcia, G. Palacios-Serrano, P. Adderley, D. Bullard, J. Grames, M. A. Mamun1, M. Poelker, M. Stutzman, R. Suleiman, Y. Wang, and S.A.K. Wijethunga "Inverted Geometry Ceramic Insulators in High Voltage DC Electron Guns for Accelerators" [[Media:Inv insulators paper published 2021 IEEE conf on elec insu and deil phenomena.pdf]]<br />
<br />
'''Photocathode Physics for Photoinjectors, SLAC, November 10-12, 2021''' [https://conf.slac.stanford.edu/photocathode-physics-photoinjectors-2021/ P3 Workshop]<br />
<br />
'''AVS Symposium, Charlotte NC, October 24-29'''<br />
<br />
'''24th International Symposium on Spin Physics (SPIN2021) October 18-22, 2021, Matsue, Japan - https://indico2.riken.jp/event/3082/'''<br />
<br />
* J. M. Grames, C. K. Sinclair, M. Poelker, X. Roca-Maza, M. L. Stutzman, R. Suleiman, Md. A. Mamun, M. McHugh, D. Moser, J. Hansknecht, B. Moffit and T. J. Gay "High Precision 5 MeV Mott Polarimeter" [[media:Grames-Spin2021.docx]] [[media:Grames_SPIN2021.pdf]] [[media:SPIN2021-GRAMES-103.pdf]]<br />
<br />
* M. Stefani and B. van der Geer, [[media:SPIN2021_Stefani.pdf | New Spin Tracking Software Developed For General Particle Tracer]], SPIN 2021<br />
<br />
* R. Suleiman, "EDM in Small Rings": [[media:EDM_SmallRings_Suleiman_Spin2021.pdf]]<br />
<br />
<br />
'''Mini-Symposium Advancements and Opportunities of Polarized Targets and Beams [http://web.mit.edu/dnp2021/index.html APS DNP Meeting, Boston Oct 11-14, 2021]'''<br />
<br />
* Shukui ?<br />
<br />
'''12th International Particle Accelerator Conference - IPAC’21, May 24-28, 2021''' https://www.ipac21.org/#<br />
<br />
* G. Palacios, P. Adderley, H. Baumgart, J. Benesch, D. Bullard, J. Grames, C. Hernandez-Garcia, A. Hofler, D. Machie, M. Poelker, M. Stutzman and R. Suleiman, "A 200 keV Wien Filter Spin Rotator Design and High Voltage Evaluation" [[Media:Gabriel Palacios Wien filter Abstract IPAC21 FINAL.docx | Abstract]][[Media:IPAC_2021_poster_slides_final_Gabriel_Palacios.pptx | Poster]] [[Media:Mopab324(1).pdf | Proceedings]]<br />
<br />
* J. T. Yoskowitz , G. A. Krafft, G. Palacios-Serrano, S. Wijethunga, J. Grames, J. Hansknecht, C. Hernandez-Garcia, M. Poelker, M. Stutzman, R. Suleiman and S. B. van der Geer, "IMPROVING THE OPERATIONAL LIFETIME OF THE CEBAF PHOTO- GUN BY ANODE BIASING" [[:File:Yoskowitz_IPAC2021_BiasedAnode_Abstract_2.docx | Abstract]] [[:File:WEPAB104.pdf | Proceedings]]<br />
<br />
* J. T. Yoskowitz , G. A. Krafft, S. B. van der Geer, J. Grames, C. A. Valerio Lizarraga "SIMULATING ELECTRON IMPACT IONIZATION USING A GENERAL PARTICLE TRACER (GPT) CUSTOM ELEMENT" [[:File:Yoskowitz_IPAC2021_GPT_Abstract_2.docx | Abstract]] [[:File:WEPAB105.pdf | Proceedings]]<br />
<br />
* S.A.K. Wijethunga , J.R. Delayen, G.A. Krafft , G. Palacios-Serrano, M.A. Mamun, C. Hernandez-Garcia, R. Suleiman, M. Poelker, J. Benesch, "REDESIGN OF THE JEFFERSON LAB -300 kV DC PHOTO-GUN FOR HIGH BUNCH CHARGE OPERATIONS" [[Media:WEPAB092.pdf|Proceedings]] [[Media:REDESIGN OF THE JEFFERSON LAB -300 kV DC PHOTO-GUN FOR HIGH BUNCH CHARGE OPERATIONS_poster.pdf|Poster]] <br />
<br />
* S. A. K. Wijethunga, J. R. Delayen, G. A. Krafft, M. A. Mamun, R. Suleiman, M. Poelker, S. Zhang, J. Benesch, "SPACE CHARGE EFFECT IN LOW ENERGY MAGNETIZED ELEC-TRON BEAM" [[Media:WEPAB093.pdf|Proceedings]] [[Media:SPACE CHARGE EFFECT IN LOW ENERGY MAGNETIZED ELECTRON BEAM_poster.pdf|Poster]] <br />
<br />
* Marcy Stutzman, Charles Hetzel, "Pressure Simulations for the EIC Interaction Region" [[media:WEPAB340.pdf]] [[media:WEPAB340_poster.pdf]]<br />
<br />
'''2021 International Workshop on Future Linear Colliders - LCWS2021, March 15-18, 2021''' https://indico.cern.ch/event/995633/<br />
* Proceedings https://www.slac.stanford.edu/econf/C2103151/<br />
* [[Media:Hernandez-Garcia JLab LCWS 500 kV insulators.pptx]]<br />
<br />
==2020==<br />
<br />
'''2020 Fall Meeting of the APS Division of Nuclear Physics Thursday–Sunday, October 29–November 1 2020'''<br />
:-J. Grames "Highly spin polarized electron and positron beams at a compact accelerator facility"<br />
:Session link: http://meetings.aps.org/Meeting/DNP20/APS_Invited [[media:APSDNP2020-Grames_FINAL_150dpi.pptx]]<br />
<br />
:-N. Trotta, J. Grames, F. Benmokhtar "Simulations of Positron Distributions from a Polarized Electron Beam" (poster), [[media:Trotta_Nicholaus_JA_FINAL.pptx]]<br />
<br />
'''Americas Workshop on Linear Colliders 2020''' (https://agenda.linearcollider.org/event/8622/overview)<br />
<br />
'''CFNS Workshop on Beam Polarization and Polarimetry at EIC ([https://indico.bnl.gov/event/7583/]) June 26, 2020'''<br />
:J. Grames "Production of Polarized Positrons at Jefferson Lab" (slides) [[media:Grames_CNFS_FINAL.pptx]]<br />
:T. Gay "High-Accuracy 5-MeV Mott Polarimetry at the CEBAF Injector" (slides) [[media:EIC Mott Talk v3.pdf]] [[media:EIC Mott Talk v3.pptx]] <br />
<br />
'''[http://ipac2020.vrws.de International Particle Accelerator Conference IPAC'20] (Caen, France, May 2020)'''<br />
: F. Lin, Y.S. Derbenev, J.M. Grames, J. Guo, V.S. Morozov, E.J-M. Voutier, Y. Zhang, "Exploration of Positron Beams for New Frontier Research" (MOVI04), also the presentation is available at https://www.ipac20.org/fanglei-lin-jlab/ , however, it requires to log into the IPAC20 site.<br />
<br />
==2019==<br />
'''International Workshop on Future Linear Colliders (LCWS 2019) ([http://epx.phys.tohoku.ac.jp/LCWS2019/]) October 28 - November 1, Sendai Japan'''<br />
* Compressed PowerPoint (~19 MB) => [[media:LCWS19_Grames_compressed.pptx]] <br />
<br />
'''2019 Workshop on Polarized Sources, Targets, and Polarimetry (PSTP 2019) ([https://conference.sns.gov/event/139/overview]) September 23-27 2019, Knoxville, TN'''<br />
<br />
J. Yoskowitz, J. Grames, J. Hansknecht, C. Hernandez-Garcia, G. A. Krafft, M. Poelker, R.Suleiman, G. Palacios-Seranno, S. Wijethunga, S. B. Van Der Geer<br />
"New Simulations for Ion-Production and Back-Bombardment in GaAs Photo-guns"<br />
* [[:File:Yoskowitz_PSTP19_Presentation_FINAL_compressed.pptx | Presentation]]<br />
* [[:File:Yoskowitz_PSTP2019_Proceedings_Newest.pdf | Proceedings]]<br />
<br />
'''European Workshop on Photocathodes for Particle Accelerator Applications (EWPAA 2019) ([https://indico.psi.ch/event/6746/page/1353-welcome]) Paul Scherrer Institut, Villigen, Switzerland, from September 11 to 13, 2019'''<br />
* PowerPoint => [[media:EWPAA 2019_poelker.pptx]]<br />
<br />
'''10th International Particle Accelerator Conference (IPAC 2019) ([https://ipac19.org/]) MELBOURNE CONVENTION & EXHIBITION CENTRE, AUSTRALIA, 19 – 24 MAY 2019'''<br />
* PDF => [[media:IPAC 2019_zhang.pdf]]<br />
<br />
==2018==<br />
'''International Workshop on Future Linear Colliders (LCWS 2018) ([http://www.uta.edu/physics/lcws18/index.html]) October 22-26, 2018, University of Texas - Arlington'''<br />
* PowerPoint (37 MB) => [[media:LCWS18_Grames_FINAL.pptx]] <br />
* PDF (40 MB and animation does not work) => [[media:LCWS18_Grames_FINAL.pdf]]<br />
<br />
'''Photocathode Physics for Photoinjectors (P3) Workshop([https://www.lanl.gov/conferences/photocathode-physics-photoinjectors/index.php website]), October 15-17, 2018, Santa Fe, New Mexico'''<br />
* M.A. Mamun, "Magnetized Electron Source for JLEIC Electron Cooler" [[media:2018_P3_JLab Magnetized Gun_mamun.pdf]]<br />
'''Spin 2018 ([http://spin2018.unife.it/ website]) September 10-14, 2018, Ferrara, Italy'''<br />
<br />
'''18th International Conference on Positron Annihilation ([https://www.bgsu.edu/icpa18.html website]), August 19-24, 2018, Orlando, Florida'''<br />
* J. Grames, "Polarized Beams – A Tale of Two Leptons" [[media:ICPA_Grames_FINAL.pptx]]<br />
<br />
'''Electrons for the LHC - LHeC/FCCeh and Perle Workshop ([https://indico.cern.ch/event/698368 website]), June 27-29, 2018'''<br />
* J. Grames, P. Adderley, B. Bullard, J. Hansknecht, C. Hernandez-Garcia, G. Palacios, M. Poelker, D. Moser, M. Stutzman, S. Zhang, "Milliampere beam studies using high polarization photocathodes at the CEBAF Photoinjector" [[media:LHeC18_Grames_Final.pptx]]<br />
<br />
'''9th International Particle Accelerator Conference (IPAC'18), Vancouver, British Columbia, Canada, April 29 to May 4, 2018'''<br />
<br />
* M.A. Mamun, P. Adderley, J. Benesch, B. Bullard, J. Delayen, J. Grames, J. Guo, F. Hannon, J. Hansknecht, C. Hernandez-Garcia, R. Kazimi, G. Krafft, M. Poelker, R. Suleiman, M. Tiefenback, Y. Wang, S. Wijethunga, and S. Zhang, "Production of Magnetized Electron Beam from a DC High Voltage Photogun" [[media:THPMK108_poster_Mamun_IPAC18.pdf]], [[media:THPMK108_Proceedings_Mamun_IPAC18.pdf]]<br />
<br />
* S.A.K. Wijethunga, M.A. Mamun, F.E. Hannon, G.A. Krafft, J. Benesch, R. Suleiman, M. Poelker, J.R. Delayen "Simulation Study of the Magnetized Electron Beam" [[Media:THPAK071_poster_Sajini_IPAC'18.pdf]], [[Media:THPAK071_proceedings_Sajini_IPAC'18.pdf]]<br />
<br />
* F.E.Hannon: "Design of a High Charge, Low Energy, Magnetized Electron Injector" [[Media:THPMK107.pdf]], [[Media:THPMK107_poster.pdf]]<br />
<br />
==2017==<br />
'''International Workshop on Polarized Sources, Targets and Polarimeters (PSTP), Oct 15 - 20, 2017, Daejeon, South Korea'''<br />
* Wei Lui, Matt Poelker, Shukui Zhang, Marcy Stutzman, "Spin Polarization Sensitivity of Electrons Emitted from Bulk GaAs Photocathodes" [[media:PSTP2017_Wei Lui_polarization study bulk GaAs.pptx]]<br />
<br />
* M. Poelker, P. Adderley, J. Benesch, B. Bullard, J. Grames, F. Hannon, J. Hansknecht, C. Hernandez-Garcia, R. Kazimi, G. Krafft, M. A. Mamun, R. Suleiman, M. Tiefenback, S. Zhang, Y. Wang, S. Wijiethunga and J. Yoskovitz, "Magnetized Electron Beam for JLEIC Re-circulator Cooler Ring" [[media:PSTP2017_Poelker_magnetized beam.pptx]], [[media: Proceedings of Science submission, "Magnetized Electron Beam for JLEIC Re-circulator Cooler Ring".pdf]] <br />
<br />
* Joe Grames, Phil Adderley, John Hansknecht, Reza Kazimi, Matt Poelker, Daniel Moser, Marcy Stutzman, R. Suleiman Shukui Zhang "Milliampere beam studies using high polarization photocathodes at the CEBAF Photoinjector" [[media:PSTP2017_Grames_v1.pptx]] [[media:PSTP2017_Grames_Final.pdf]]<br />
<br />
'''International Workshop on Physics with Positrons @ JLab (JPOS), Sep 12 - 15, 2017, Jefferson Lab, Newport News, VA'''<br />
* [[media:Larry Cardman_The PEPPo method for polarized positrons and PEPPo II.pptx]]<br />
* [https://aip.scitation.org/toc/apc/1970/1?Track=CPPERP1970&dm_i=2FAM%2C197ME%2C8DZK6R%2C40LG2%2C1&expanded=1970 AIP Conf. Proc. 1970]<br />
<br />
'''NSTAR 2017, the 11th International Workshop on the Physics of Excited Nucleons,, August 20-23, 2017, University of South Carolina, Columbia, SC''' [http://nstar2017.physics.sc.edu/ Scientific Program]<br />
* J. Grames [[media:NSTAR_Grames_Final.pptx]]<br />
<br />
==2016==<br />
'''Photocathode Physics for Photoinjectors, October 17-19, 2016, JLab'''<br />
* M. A. Mamun, "Study of bialkali antimonide photocathode on Niobium substrate" [[media:Mamun Nb substrate.pptx]]<br />
* W. Liu, "The effects of ion bombardment on bulk GaAs photocathodes with different surface-cleavage planes" [[media:Ion bombardment.pptx]] <br />
<br />
'''2016 Fall Meeting of the APS Division of Nuclear Physics, Vancouver BC, Canada, 13-16 October 2016'''<br />
* B. Hardy and J. Grames, "Magneto-Optic Kerr Effect in a Magnetized Electron Gun" [[media:HardyDNP.pptx]] [[media:HardyDNP.pdf]]<br />
* D. Brakman, C. Cuevas, G.P. Gilfoyle, J. Grames, B. Gunning, "Uniformly Rastering an Electron Beam on a Polarized Cryotarget" [[media:BrakmanDNP.pptx]] [[media:BrakmanDNP.pdf]]<br />
<br />
'''28th Linear Accelerator Conference, LINAC 16, East Lansing, Michigan, 25-30 September 2016'''<br />
* M. Drury, G. Eremeev, J. Grames, R. Kazimi, M. Poelker, J. Preble, R. Suleiman, Y. Wang, M. Wright, "4 K SRF Operation of the 10 MeV CEBAF Photo-Injector" [[media:MOLPR010_proceedings.pdf]] [[media:MOLPR010_poster.ppt]]<br />
<br />
'''SPIN 2016, Urbana-Champaign, 26-30 September 2016'''<br />
* M. Poelker "12 GeV CEBAF: Accelerator Systems and Polarized Beams" [[media:SPIN2016_Poelker_12GeV CEBAF.pdf]] or view ppt file at https://indico.cern.ch/event/570680/contributions/2308608/<br />
* J. Grames, "Production of Highly Polarized Positrons Using MeV Energy Polarized Electrons" presentation [[media:SPIN_Grames_Final.pptx]] and proceedings [[media:Spin2016Grames.pdf]]<br />
* T. Gay, "High-Precision 5-MeV Mott Polarimetry at the JLab Injector", SPIN 2016 @ UIUC, Sep 26-30, 2016 [[media:SPIN16_Gay.pdf]]<br />
<br />
'''ECT Workshop: Physics beyond the standard model and precision nucleon structure , Trento, Italy, 1-5 August, 2016'''<br />
* A. Freyberger, "CEBAF Polarized Beam for Parity Violation Experiments in the 12 GeV era" [[media:ECT2016_APF.pdf]]<br />
<br />
'''7th International Particle Accelerator Conference, BEXCO, Busan, Korea, 8-13 May 2016'''<br />
* R. Kazimi, J. M. Grames, J. Hansknecht, A. Hofler, G. Lahti, T. E. Plawski, M. Poelker, R. Suleiman, Y. Wang, "Four Beam Generation for Simultaneous Four-Hall Operation at CEBAF" [[media:THPOY060-Final.PDF]] [[media:THPOY060_poster.pdf]] [http://accelconf.web.cern.ch/AccelConf/ipac2016/papers/thpoy060.pdf Proceedings]<br />
<br />
'''APS April Meeting, Salt Lake City Utah, 16-19 April 2016'''<br />
* M. Poelker, "Polarized electrons for parity violation experiments at Jefferson Lab" [[media:poelker APS mtg slides.pptx]]<br />
<br />
==2015==<br />
'''Polarized Sources, Targets and Polarimetry Workshop (PSTP'15), Bochum, Germany, September 14-18, 2015'''<br />
* J. Grames, "A Low-Energy Source of Highly Spin-Polarized Positrons" [[Media:PSTP15_Grames.docx]]<br />
* M. Poelker, "Ongoing efforts to construct a 350 kV dc high voltage photogun with inverted insulator geometry" [[Media:PSTP15_poelker_building a 350kV gun.pptx]]<br />
<br />
'''Accelerator Operations Retreat, Jefferson Lab, July 15-17, 2015'''<br />
* J. Grames, "Laser and Injector Upgrade for 4-Hall Operations" [[Media:OpsRetreat15_Grames.pptx]]<br />
<br />
'''Intense Electron Beams Workshop, Cornell Unversity, June 17-19, 2015'''<br />
* J. Grames, "High Current Polarized Electron Sources" [[Media:IEB_Grames_Final.pptx]]<br />
* J. Grames, "Convener Summary - Electrons Sources and Polarimeters" [[Media:IEB_Technology_Grames.pptx]]<br />
* J. Grames, "Plenary Open Topics - PEPPo" [[Media:IEB_PEPPo_Grames.pptx]]<br />
<br />
'''IPAC2015, Richmond, VA May 3-9, 2015'''<br />
* M.L.Stutzman, P.A.Adderley, M.Poelker, Md.A.Mamun "Vacuum Characterization and Improvement for the Jefferson Lab Polarized Electron Source" [[Media:StutzmanPosterIPAC2015.pptx]] [[Media:StutzmanProceedingsIPAC2015.docx]] <br />
<br />
'''IPAC2015, Richmond, VA May 3-9, 2015'''<br />
* S.Zhang, M.L.Stutzman, M.Poelker, Y. Chen, and A. Moy, "Observation of Significant Quantum Efficiency Enhancement from a Polarized Photocathode with Distributed Brag reflector" [[Media:SZhangPosterIPAC2015.pdf]] [[Media:SZhangProceedingsIPAC2015.pdf]]<br />
<br />
'''IPAC2015, Richmond, VA May 3-9, 2015'''<br />
* A. Adeyemi, J. Grames, R. Suleiman for the PEPPo Collaboration, "PEPPo: Using a Polarized Electron Beam to Produce Polarized Positrons" [[Media:AdeyemiPosterIPAC2015.pdf]] [[Media:AdeyemiProceedingsIPAC2015.pdf]]<br />
<br />
==2014==<br />
''' VII Congreso Internacional de Ingeniería Física, November 24 - 28, 2014, Universidad Autónoma Metropolitana, Ciudad de México'''<br />
* M. Poelker, "Future Trends for Photoelectron Guns at Accelerators" [[Media:Electron Guns at Jefferson Lab.pptx]]<br />
<br />
'''Proton Ring EDM Collaboration Meeting, November 10 - 11, 2014, Brookhaven National Lab'''<br />
* M. Poelker, "High Voltage Studies at Jefferson Lab" [[Media:Can our experience building DC high voltage photoguns help the Proton Ring EDM effort?.pptx]]<br />
<br />
'''P3 Workshop, November 3 - 5, Lawrence Berkeley National Laboratory, Berkeley, CA USA'''<br />
P3 = Physics of Photocathodes for Photoinjectors [https://sites.google.com/a/lbl.gov/photocathode-physics-for-photoinjectors/announcement]<br />
* R. Mammei, M. Poelker, "Performance of alkali-antimonide photocathodes inside a JLab dc high voltage photogun" [[Media:CsK2Sb lifetime studies_P3.pptx]]<br />
* M.A. Mamun, M. Poelker, "Alkali-antimonide photocathodes using co-deposition and an effusion source" [[Media:Bi-alkali photocathodes and effusion source_P3.pptx]] <br />
<br />
<br />
'''41st ICMCTF, April 28 - May 2, 2014, San Diego, CA, USA'''<br />
* M.A.Mamun, E. Forman, R. Taus, M. Poelker, A.A. Elmustafa, "Evaluation of TiN-Coated Aluminum Electrodes for DC High Voltage Electron Guns" [[Media:Mamun_ICMCTF Conference_SanDiego_4_28_14.pptx]] <br />
<br />
'''Electron Ion Collider Workshop, March 17-21, 2014, Jefferson Lab'''<br />
* C. Hernandez-Garcia, J. Hansknecht, M. Poelker, "Status of the JLab 500 kV Inverted Gun"<br />
<br />
'''Electron Ion Collider Workshop, March 17-21, 2014, Jefferson Lab'''<br />
* J. Grames, P. Adderley, T. Gay, J. Hansknecht, C. Horowitz, M. McHugh, A. Opper, M.Poelker, X. Roca-Maza, C.Sinclair, M. Stutzman, R. Suleiman, "Precision Test of Mott Polarimetry in the MeV Energy Range"<br />
<br />
'''Electron Ion Collider Workshop, March 17-21, 2014, Jefferson Lab'''<br />
* J. Grames on behalf of PEPPo Collaboration "Polarized Electrons for Polarized Positrons: A Proof-of-Principle Experiment"<br />
<br />
'''Electron Ion Collider Workshop, March 17-21, 2014, Jefferson Lab'''<br />
* R. Suleiman, P. Adderley, J. Clark, S. Covert, J. Grames, J. Hansknecht, M.Poelker, M. Stutzman, "Operation of Jefferson Lab Polarized Electron Sources at High Currents"<br />
- Talk: [[Media:WEYAUD2_talk.pdf]] [[Media:WEYAUD2_talk.ppt]] <br />
- Proceedings: [[Media:WEYAUD2.pdf]] [[Media:WEYAUD2.docx]]<br />
<br />
==2013==<br />
<br />
'''XVth International Workshop on Polarized Sources, Targets, and Polarimetry''' [http://faculty.virginia.edu/PSTP2013/ Workshop Website]<br />
* J. Grames, on behalf of PEPPo Collaboration "Polarized Electrons for Polarized Positrons: A Proof-of-Principle Experiment" <br />
<br />
'''XVth International Workshop on Polarized Sources, Targets, and Polarimetry''' [http://faculty.virginia.edu/PSTP2013/ Workshop Website]<br />
* J. Grames, M. McHugh, C. Horowitz, M. Melnitchouk, A. Opper, M. Poelker, S. Rhodes, X. Roca-Maza, C. Sinclair, R. Suleiman, "Mott polarimeter upgrade at Jefferson Lab" [[Media:PSTP2013_Grames McHugh.pdf|PDF]]<br />
<br />
'''IPAC 2013, May 12-17, Shanghai, China'''<br />
* E. Voutier on behalf of the PEPPo Collaboration, "The Proof-of-Principle Experiment PEPPo"<br />
<br />
'''IPAC 2013, May 12-17, Shanghai, China'''<br />
* O. Dadoun, E. Froidefond, E. Voutier on behalf of the PEPPo Collaboration, "Characterization of the Analyzing Target of the PEPPo Experiment"<br />
<br />
'''IPAC 2013, May 12-17, Shanghai, China'''<br />
* A. Adeyemi, E. Voutier on behalf of the PEPPo Collaboration, "The Calibration of the PEPPo Polarimeter for Electrons and Positrons"<br />
<br />
'''PEB2013, Workshop to Explore Physics Opportunities with Intense, Polarized Electron Beams''' [http://web.mit.edu/lns/PEB_Workshop/ Workshop Website] [http://www.flickr.com/photos/rcowan/sets/72157633050445370/ Workshop photos]<br />
*M. Poelker, "High Current Polarized Electron Source" [[Media:MIT_PEBworkshop_poelker.pptx|PPTX]], [[Media:MIT_PEBworkshop_poelker.pdf|PDF]]<br />
<br />
== 2007 ==<br />
'''IPAC 2007, Albuquerque, New Mexico'''<br />
* J. Grames, P. Adderley, J. Brittian, J. Clark, J. Hansknecht, D. Machie, M.Poelker, M.L. Stutzman, R. Suleiman, K. Surles-Law, "LIFETIME MEASUREMENTS OF HIGH POLARIZATION STRAINEDSUPERLATTICE GALLIUM ARSENIDE AT BEAM CURRENT >1 MILLIAMP USING A NEW 100kV LOAD LOCK PHOTOGUN", Proceedings of PAC07, Albuquerque, New Mexico, USA, THPMS064 [[media:THPMS064.PDF]]<br />
<br />
<br />
<br />
== 1997 - 2012 ==<br />
Until this section updated please refer to '''[http://www.jlab.org/accel/inj_group/index.html Old CIS Homepage]'''</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:PSTP2022_018(1).pdf&diff=29619File:PSTP2022 018(1).pdf2023-04-11T16:22:27Z<p>Gabrielp: </p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=Gabriel_Palacios-Serrano&diff=29239Gabriel Palacios-Serrano2023-02-13T01:00:40Z<p>Gabrielp: </p>
<hr />
<div>*[https://drive.google.com/file/d/1FpWgPuf9JgBxLSfFNQE8-ZHq7Sncs88N/view PhD Dissertation defense March 23 2021]<br />
*[[Media:Gabriel's thesis outline draft Feb 2019 Rev00.docx]] <br />
<br />
------------------------------------------------------------<br />
== HV insulator for 500 kV: ==<br />
** Feb 2023 project update [[Media: 500_kV_project_update_Feb_2023.pptx]]<br />
** Exploring the use of the receptacle and the sizes of the SF6 spool [[Media:HV_insulator-1st_month.pptx]]<br />
** Jan 2023 summary [[Media:500kV Summary Jan 2023.png]]<br />
** Reached 315 kV [[Media:221220253.5.png]]<br />
<br />
<br />
== 18 in gun: ==<br />
** Kick and angle after S&A found a 0.5 mm anode deviation [[Media: CIS-R30-3_slots_SURVEYED_CHECK_crashed.pptx]]<br />
** Comparing Shields to answer the question: Can we use a smaller shield for op at -200 kV? [[Media: GTS_gun_with_CEBAF_anode_Shields.pptx]]<br />
** Exploring the anode location to cancel vertical kick [[Media:18in_gun_anode_studies.pptx]]<br />
<br />
== Wien filter stuff: ==<br />
'''12th International Particle Accelerator Conference - IPAC’21, May 24-28, 2021''' https://www.ipac21.org/#<br />
** Wien filter submitted after JLab internal review approval [[Media:Gabriel Palacios Wien filter Abstract IPAC21 FINAL.docx]]<br />
** Poster slides [[Media:IPAC_2021_poster_slides_final_Gabriel_Palacios.pptx]]<br />
<br />
Summary comparing GPT results with ideal E-field CST model compared to actual surveyed Vertical Wien assembly. <br />
The presentation also indicates the location in the O group drive of the various CST-generated E-field maps and GPT beam dynamics simulations.<br />
The Horizontal beam assembly electrode assembly is < 100 micron difference in pitch along the beam path. There was no need to generate a new field map. <br />
*[[Media:Vertical Wien GPT sims with spline electrodes Surveyed.pptx]]<br />
<br />
Spline electrode GPT simulations<br />
* [[Media:Wien_filter_GPT_7_Spline_electrode.pptx ]]<br />
<br />
Asymmetric bias GPT simulations<br />
* [[Media:Wien_filter_GPT_6.pptx ]]<br />
<br />
Inter-plate gap GPT simulations<br />
* [[Media:Wien_filter_GPT_5.pptx ]]<br />
<br />
Optics of the Wien filter, final<br />
* [[Media:Wien_filter_GPT_4_FINAL.pptx ]]<br />
<br />
Optics of the Wien filter, first try<br />
* [[Media:Wien_filter_GPT_3.pptx ]]<br />
<br />
Bolts and washers (metal and alumina sims).<br />
* [[Media:Wien_filter_bolts_and_washers.pptx ]]<br />
<br />
Exploring the reduction on the inter-plate gap.<br />
* [[Media:Wien_filter_shorter_plate_gaps.pptx ]]<br />
<br />
Double thickness mounting tab sims.<br />
* [[Media:Wien_filter_mounting_tab.pptx ]]<br />
<br />
Wien filter 6: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_6.pptx ]] <br />
<br />
Wien filter 4: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_4.pptx ]]<br />
<br />
Wien filter 3: I measured the vacuum lab's Wien filter and checked what we can scavenge for the 40 kV feedthrough version.<br />
* [[Media:Wien_filter_3.pptx ]]<br />
<br />
Wien filter 2: Simulation results for the 40 kV feedthrough for Wien filter at UITF.<br />
* [[Media:Wien_filter_2.pptx ]]<br />
<br />
Wien filter 1: Simulation results for the existing (05/22/2019) Wien filter at UITF.<br />
* [[Media:Wien_filter_1.pptx ]]<br />
<br />
------------------------------------------------------------<br />
<br />
== Gun related ==<br />
<br />
'''Solidworks sumary'''<br />
<br />
* [[Media:GTS_gun_model_sumary.pdf]]<br />
* [[Media:T-cathode_gun_model_sumary.pdf]]<br />
<br />
<br />
'''Data taking runs''' <br />
<br />
UITF T-cathode electrode vs Small Shield: BPM data and centering in first lens at 200 [kV]<br />
* Rev5 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-8.pptx]]<br />
* Rev4 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-7.pptx]]<br />
* Rev3 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-6.pptx]]<br />
* Rev2 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-5.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-4.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-3.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV.pptx]]<br />
<br />
Log entry related to how the Laser XY stage moves along the X-axis<br />
* https://logbooks.jlab.org/entry/3704517<br />
<br />
Images of on axis QE run p2_2019-06-04_15_39 to calculate STEP-mm conversion factor<br />
* [[Media:QE scan fixed X 10000.png]]<br />
* [[Media:QE scan fixed Y 10000.png]]<br />
<br />
Ey difference for T-cathode and Small shield (From CST field maps)<br />
* [[Media:Ey difference for T-cathode and Small shield.PNG]]<br />
<br />
<br />
'''GPT, CST, COMSOL '''<br />
<br />
CST particle tracking of T-cathode, Small Shield and Big Shield @-200 kV<br />
* [[Media:Cathodes_particle_tracking_CST_1.pptx]]<br />
<br />
CORRECTION: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1_CORRECTED.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of GBacc on emittance. <br />
* [[Media:GTS_GPT_3.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of field map interpolation step-size on emittance. <br />
* [[Media:GTS_GPT_2.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -200 kV. This was produced using Yan's GTS parameters. We are trying to find out why is the measurements and simulated emittance so different. <br />
* [[Media:GTS_GPT_1.pptx]]<br />
<br />
THIS FILE HAS BEEN CORRECTED: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters. This is the same as the previous entry but shows extra slides with comparisons of the three cathodes wth one metric as requested by Matt. <br />
* [[Media:New_CEBAF_gun_CST_4_2.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:New_CEBAF_gun_CST_4.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV.<br />
* [[Media:New_CEBAF_gun_CST_3.pptx]]<br />
<br />
Test shields 1 to 7 simulations on CST for the -200 kV new CEBAF gun (and includes a bit of the GTS gun field maps at 200 kV w/small anode). <br />
* [[Media:New_CEBAF_gun_CST_2.pptx]]<br />
<br />
Test shields 1,2,3 & 4 simulations on CST for the -200 kV new CEBAF gun. <br />
* [[Media:New_CEBAF_gun_CST_1.pdf]] [[Media:New_CEBAF_gun_CST_1.pptx]]<br />
* [[Media:New_CEBAF_gun_CST_1_w-noshield.pdf]] [[Media:New_CEBAF_gun_CST_1_w-noshield.pptx]]<br />
<br />
Field maps for the -200 kV new CEBAF gun @-130 kV and -180 kV. <br />
* [[Media:Field_maps_for_the_new_CEBAF_gun_at_130_kV_and_180_kV.pdf]]<br />
<br />
Results for CST microwave studio simulations of the -300 kV GTS gun. <br />
* [[Media:GTS_CST_1.pdf]]<br />
<br />
Corrections on the simulation results for the -200 kV CEBAF gun paper. <br />
* [[Media:COMSOL_corrected.pdf]]<br />
<br />
Document with details on the Pierce geometry angle variations for the -300 kV GTS gun. <br />
* [[Media:GTS COMSOL 8.pdf]]<br />
<br />
COMSOL simulations for 300kV and 200kV guns upper shields<br />
* [[Media:300kV_COMSOL_upper_shields.pdf]]<br />
* [[Media:200kV_COMSOL_upper_shield.pdf]]<br />
<br />
COMSOL modeling comparing CEBAF 130kV white insulator no shed versus Upgrade 200kV black insulator with shed.<br />
(Both guns biased at -200kV)<br />
* [[Media:COMSOL comparison CEBAF 130kV to 200kV upgrade.pdf]]<br />
* [[Media:COMSOL ceramic conductivity.pdf]]-</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:500_kV_project_update_Feb_2023.pptx&diff=29238File:500 kV project update Feb 2023.pptx2023-02-13T00:59:25Z<p>Gabrielp: </p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=Gabriel_Palacios-Serrano&diff=29105Gabriel Palacios-Serrano2023-01-10T15:30:30Z<p>Gabrielp: /* HV insulator for 500 kV: */</p>
<hr />
<div>*[https://drive.google.com/file/d/1FpWgPuf9JgBxLSfFNQE8-ZHq7Sncs88N/view PhD Dissertation defense March 23 2021]<br />
*[[Media:Gabriel's thesis outline draft Feb 2019 Rev00.docx]] <br />
<br />
------------------------------------------------------------<br />
== HV insulator for 500 kV: ==<br />
** Exploring the use of the receptacle and the sizes of the SF6 spool [[Media:HV_insulator-1st_month.pptx]]<br />
** Jan 2023 summary [[Media:500kV Summary Jan 2023.png]]<br />
** Reached 315 kV [[Media:221220253.5.png]]<br />
<br />
== 18 in gun: ==<br />
** Kick and angle after S&A found a 0.5 mm anode deviation [[Media: CIS-R30-3_slots_SURVEYED_CHECK_crashed.pptx]]<br />
** Comparing Shields to answer the question: Can we use a smaller shield for op at -200 kV? [[Media: GTS_gun_with_CEBAF_anode_Shields.pptx]]<br />
** Exploring the anode location to cancel vertical kick [[Media:18in_gun_anode_studies.pptx]]<br />
<br />
== Wien filter stuff: ==<br />
'''12th International Particle Accelerator Conference - IPAC’21, May 24-28, 2021''' https://www.ipac21.org/#<br />
** Wien filter submitted after JLab internal review approval [[Media:Gabriel Palacios Wien filter Abstract IPAC21 FINAL.docx]]<br />
** Poster slides [[Media:IPAC_2021_poster_slides_final_Gabriel_Palacios.pptx]]<br />
<br />
Summary comparing GPT results with ideal E-field CST model compared to actual surveyed Vertical Wien assembly. <br />
The presentation also indicates the location in the O group drive of the various CST-generated E-field maps and GPT beam dynamics simulations.<br />
The Horizontal beam assembly electrode assembly is < 100 micron difference in pitch along the beam path. There was no need to generate a new field map. <br />
*[[Media:Vertical Wien GPT sims with spline electrodes Surveyed.pptx]]<br />
<br />
Spline electrode GPT simulations<br />
* [[Media:Wien_filter_GPT_7_Spline_electrode.pptx ]]<br />
<br />
Asymmetric bias GPT simulations<br />
* [[Media:Wien_filter_GPT_6.pptx ]]<br />
<br />
Inter-plate gap GPT simulations<br />
* [[Media:Wien_filter_GPT_5.pptx ]]<br />
<br />
Optics of the Wien filter, final<br />
* [[Media:Wien_filter_GPT_4_FINAL.pptx ]]<br />
<br />
Optics of the Wien filter, first try<br />
* [[Media:Wien_filter_GPT_3.pptx ]]<br />
<br />
Bolts and washers (metal and alumina sims).<br />
* [[Media:Wien_filter_bolts_and_washers.pptx ]]<br />
<br />
Exploring the reduction on the inter-plate gap.<br />
* [[Media:Wien_filter_shorter_plate_gaps.pptx ]]<br />
<br />
Double thickness mounting tab sims.<br />
* [[Media:Wien_filter_mounting_tab.pptx ]]<br />
<br />
Wien filter 6: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_6.pptx ]] <br />
<br />
Wien filter 4: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_4.pptx ]]<br />
<br />
Wien filter 3: I measured the vacuum lab's Wien filter and checked what we can scavenge for the 40 kV feedthrough version.<br />
* [[Media:Wien_filter_3.pptx ]]<br />
<br />
Wien filter 2: Simulation results for the 40 kV feedthrough for Wien filter at UITF.<br />
* [[Media:Wien_filter_2.pptx ]]<br />
<br />
Wien filter 1: Simulation results for the existing (05/22/2019) Wien filter at UITF.<br />
* [[Media:Wien_filter_1.pptx ]]<br />
<br />
------------------------------------------------------------<br />
<br />
== Gun related ==<br />
<br />
'''Solidworks sumary'''<br />
<br />
* [[Media:GTS_gun_model_sumary.pdf]]<br />
* [[Media:T-cathode_gun_model_sumary.pdf]]<br />
<br />
<br />
'''Data taking runs''' <br />
<br />
UITF T-cathode electrode vs Small Shield: BPM data and centering in first lens at 200 [kV]<br />
* Rev5 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-8.pptx]]<br />
* Rev4 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-7.pptx]]<br />
* Rev3 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-6.pptx]]<br />
* Rev2 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-5.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-4.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-3.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV.pptx]]<br />
<br />
Log entry related to how the Laser XY stage moves along the X-axis<br />
* https://logbooks.jlab.org/entry/3704517<br />
<br />
Images of on axis QE run p2_2019-06-04_15_39 to calculate STEP-mm conversion factor<br />
* [[Media:QE scan fixed X 10000.png]]<br />
* [[Media:QE scan fixed Y 10000.png]]<br />
<br />
Ey difference for T-cathode and Small shield (From CST field maps)<br />
* [[Media:Ey difference for T-cathode and Small shield.PNG]]<br />
<br />
<br />
'''GPT, CST, COMSOL '''<br />
<br />
CST particle tracking of T-cathode, Small Shield and Big Shield @-200 kV<br />
* [[Media:Cathodes_particle_tracking_CST_1.pptx]]<br />
<br />
CORRECTION: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1_CORRECTED.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of GBacc on emittance. <br />
* [[Media:GTS_GPT_3.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of field map interpolation step-size on emittance. <br />
* [[Media:GTS_GPT_2.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -200 kV. This was produced using Yan's GTS parameters. We are trying to find out why is the measurements and simulated emittance so different. <br />
* [[Media:GTS_GPT_1.pptx]]<br />
<br />
THIS FILE HAS BEEN CORRECTED: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters. This is the same as the previous entry but shows extra slides with comparisons of the three cathodes wth one metric as requested by Matt. <br />
* [[Media:New_CEBAF_gun_CST_4_2.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:New_CEBAF_gun_CST_4.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV.<br />
* [[Media:New_CEBAF_gun_CST_3.pptx]]<br />
<br />
Test shields 1 to 7 simulations on CST for the -200 kV new CEBAF gun (and includes a bit of the GTS gun field maps at 200 kV w/small anode). <br />
* [[Media:New_CEBAF_gun_CST_2.pptx]]<br />
<br />
Test shields 1,2,3 & 4 simulations on CST for the -200 kV new CEBAF gun. <br />
* [[Media:New_CEBAF_gun_CST_1.pdf]] [[Media:New_CEBAF_gun_CST_1.pptx]]<br />
* [[Media:New_CEBAF_gun_CST_1_w-noshield.pdf]] [[Media:New_CEBAF_gun_CST_1_w-noshield.pptx]]<br />
<br />
Field maps for the -200 kV new CEBAF gun @-130 kV and -180 kV. <br />
* [[Media:Field_maps_for_the_new_CEBAF_gun_at_130_kV_and_180_kV.pdf]]<br />
<br />
Results for CST microwave studio simulations of the -300 kV GTS gun. <br />
* [[Media:GTS_CST_1.pdf]]<br />
<br />
Corrections on the simulation results for the -200 kV CEBAF gun paper. <br />
* [[Media:COMSOL_corrected.pdf]]<br />
<br />
Document with details on the Pierce geometry angle variations for the -300 kV GTS gun. <br />
* [[Media:GTS COMSOL 8.pdf]]<br />
<br />
COMSOL simulations for 300kV and 200kV guns upper shields<br />
* [[Media:300kV_COMSOL_upper_shields.pdf]]<br />
* [[Media:200kV_COMSOL_upper_shield.pdf]]<br />
<br />
COMSOL modeling comparing CEBAF 130kV white insulator no shed versus Upgrade 200kV black insulator with shed.<br />
(Both guns biased at -200kV)<br />
* [[Media:COMSOL comparison CEBAF 130kV to 200kV upgrade.pdf]]<br />
* [[Media:COMSOL ceramic conductivity.pdf]]-</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:221220253.5.png&diff=29104File:221220253.5.png2023-01-10T15:29:56Z<p>Gabrielp: </p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:500kV_Summary_Jan_2023.png&diff=29103File:500kV Summary Jan 2023.png2023-01-10T15:27:51Z<p>Gabrielp: </p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:KEK_SLAC_JLAB_meeting_200keVplus_Wien_Gabriel_Palacios.pptx&diff=28940File:KEK SLAC JLAB meeting 200keVplus Wien Gabriel Palacios.pptx2022-12-01T15:18:53Z<p>Gabrielp: Gabrielp uploaded a new version of File:KEK SLAC JLAB meeting 200keVplus Wien Gabriel Palacios.pptx</p>
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<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=US-Japan_planning_meeting_KEK/SLAC/JLAB_(1_December_2022)&diff=28939US-Japan planning meeting KEK/SLAC/JLAB (1 December 2022)2022-12-01T15:00:57Z<p>Gabrielp: </p>
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<div>US-Japan planning meeting KEK/SLAC/JLAB (1 December 2022)<br />
<br />
=1000-1200 - Test Lab Rm. 1227 (short presentations and discussions)=<br />
Join ZoomGov Meeting :https://jlab-org.zoomgov.com/j/1602793058?pwd=VDVTSzNkYytwdGtJanVTdEw4dW1CUT09<br />
Meeting ID: 160 279 3058<br />
Passcode: 173122<br />
<br />
* Joe : Plan for the day<br />
** e- source : Recommendations to PrePreLab (Feb 2022) [[media:220216_Grames_FINAL.pptx]]<br />
** e+ source : CEBAF 12 GeV with positrons (concept) [[media:221201_LERF.pptx]] <br />
* Yoshinori Enomoto (KEK) - [[media:US-Japan collaboration on particle source.pdf]]<br />
* Carlos : 400 kV polarized gun [[Media:Revised 500 kV Insulator for discussion with KEK JLab visit December 2022.pptx]]<br />
* Gabriel : >200 keV Wien filter [[media: KEK_SLAC_JLAB_meeting_200keVplus_Wien_Gabriel_Palacios.pptx]]<br />
* Sami : polarized positron design status [[media:US_Japan_meeting_Positron_injector_Concept_Dec_2022_U.pdf]]<br />
* Andriy : target thermal fatigue and irradiation studies [[media:221201-Target-Tests-at-MAMI-Ushakov.pptx]]<br />
* Silviu : target R&D development plan [[media:PeppoTargetRD_1dec2022.pdf]]<br />
* All : open mic<br />
<br />
=1200-1300 - Lunch break at cafeteria=<br />
<br />
=1300-1430 - Tours=<br />
* Joe will escort Yoshinori, arrange for dosimetry<br />
* LERF (GTS, Vault, Lab6)<br />
* ARC (Mamun)<br />
<br />
= 1500-1700 - CC F226 =<br />
* Zoom call between JLAB/SLAC/KEK - https://jlab-org.zoomgov.com/j/1600414859?pwd=L1Yvbk8zdkpYMm8vNnpDNEdkbkJsUT09<br />
* Recap topics with SLAC<br />
<br />
===Proposal writing===<br />
* Finalize topics, writing assignments, budget assignments, paper coordination<br />
* SLAC [https://urldefense.proofpoint.com/v2/url?u=https-3A__www.overleaf.com_6339222361rzjqfzdjwrzp&d=DwIFAg&c=CJqEzB1piLOyyvZjb8YUQw&r=0OMOtlswNxL2CZUVOc0o6g&m=Dd_dCnvVMBYNe0GYpCC2nkIZKn84KHus0L5ge4Bg6asfya03mKTmbfCviEzDDk4g&s=BmEDN2IwMAc_NxeXthUpIYS4liuUXQcbHSAukoA0UyI&e= overleaf link]<br />
* FOA [[media:LAB-23-2858.pdf]]<br />
<br />
===Possible 15 page Layout for Proposal (based on recent successful submissions)===<br />
:* Page 1 - DOE Cover page<br />
:* Page 2 - Cover page supplement listing in table form the name/affiliation/position for each US and Japan person<br />
:* Page 3 - Cover page supplement listing in table form listing the budget request to DOE and KEK for 3 years<br />
:* Page 4 - ½ page Introduction, Objectives, Proposed Research Methods<br />
:* Page 4-10 - propose N topics, each topic enumerated and underlined, with ¼ to ½ page of 4-8 sentences of very succinct statements of what is important, and listing what each lab would be doing under that topic<br />
:* Page 11 - One page table of activities, all N topics w/ sub-tasks, showing which FY quarter each happens within<br />
:* Page 12-14 - Separate institutional responsibilities, each topic enumerated and underlined, then each institution listed and underlined with text 1-4 sentences describing exactly what will be delivered<br />
:* Page 15 - DOE Appendix 3 : Bibliography and References cited<br />
* Example of text, scope was travel support, grow collaboration, light M&S [[media:US-Japan-CIS-Example.pdf]]<br />
<br />
===Required from Collaborators ===<br />
* R&R Budget File (attached). I highly suggest printing to PDF once done filling it out. After saving, there can be issues with reopening depending on the PDF editor version.<br />
* Budget Justification <br />
* Identification of Merit Reviewer Conflicts (attached)<br />
* Appendix 1: Biographical Sketch(es) // required for all key and senior personnel, please use fillable link https://nsf.gov/bfa/dias/policy/nsfapprovedformats/biosketch.pdf<br />
* Appendix 2: Current and Pending Support // required for all key and senior personnel, please use fillable link https://www.nsf.gov/bfa/dias/policy/nsfapprovedformats/cps.pdf<br />
<br />
===Given the timeline, I’ve put together the below dates===<br />
* 11/30 Wednesday : Budget finalized and approved by PAO<br />
* 12/02 Friday : Appendix 1 and 2 complete at the minimum<br />
* 12/05 Monday : All Appendix complete<br />
* 12/07 Wednesday : Narrative 75% complete<br />
* 12/08 Thursday : Proposal package 95% complete submitted for internal review<br />
* 12/08 – 12-14 : Finalizing of proposal, work on feedbacks from PAO, enter into PAMS<br />
* 12/15 : DOE deadline<br />
<br />
= 1800 ... =<br />
* Dinner TBD</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:KEK_SLAC_JLAB_meeting_200keVplus_Wien_Gabriel_Palacios.pptx&diff=28938File:KEK SLAC JLAB meeting 200keVplus Wien Gabriel Palacios.pptx2022-12-01T15:00:37Z<p>Gabrielp: Gabrielp uploaded a new version of File:KEK SLAC JLAB meeting 200keVplus Wien Gabriel Palacios.pptx</p>
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<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:KEK_SLAC_JLAB_meeting_200keVplus_Wien_Gabriel_Palacios.pptx&diff=28937File:KEK SLAC JLAB meeting 200keVplus Wien Gabriel Palacios.pptx2022-12-01T14:59:21Z<p>Gabrielp: </p>
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<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=EDM/Storage_Rings_Meeting_(29-30_November_2022)&diff=28887EDM/Storage Rings Meeting (29-30 November 2022)2022-11-30T15:39:28Z<p>Gabrielp: </p>
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<div>Welcome! Following upon prior discussions at the '''2016 Juelich/COSY meeting held at Jefferson Lab''' (https://indico.jlab.org/event/142/) and recently at the '''2022 PSTP workshop held in Mainz''' (https://indico.him.uni-mainz.de/event/108/) we plan another meeting at Jefferson Lab meant to further discuss topics and explore opportunities for synergies in the areas of EDM and Storage Ring physics. The meeting will be held 29-30 November, 2022, both locally and with remote zoom participation. Enjoy!<br />
<br />
== General Announcements ==<br />
* Posted times are local to Jefferson Lab (EDT).<br />
* List of participants (as of 11/17) : [[media:EDM_SR_Participants.pdf]]<br />
<br />
== Agenda: Tuesday, 29 November ==<br />
<br />
====0800-0930 : Visitor Registration ====<br />
<br />
====1000-1300 : Presentations & Discussion====<br />
* Room: Test Lab Rm. 1227 (reserved 0930-1330)<br />
* Zoom: https://jlab-org.zoomgov.com/j/1604775942?pwd=c0xSZ0Y1L1FwemppNjBmRGxscGkxQT09<br />
* (30+15) F. Rathmann (Juelich) - Search for Electric Dipole Moments and Axions/ALPs [[media:JEDI_Rathmann_29.11.2022.pdf]]<br />
* (30+15) R. Talman (Cornell) - Storage Ring Measurement of Resonant Nuclear Transmutation [[media:J-lab-slides-2.pdf]]<br />
* (30+60) R. Suleiman (JLab) - EDM in Small Rings [[media:EDM_SmallRings_Suleiman_Juelich-COSY_Meeting_2022.pdf]]<br />
<br />
====1300-1430 : Break for Lunch====<br />
====1430-1630 : Lab Tours====<br />
* Upgraded Injector Test Facility - Matt/Joe<br />
* HV/Wien Filter Test Stand - Gabriel/Carlos <br />
* Magnetized Beam Test Stand - Mamun/Riad<br />
<br />
====1630-1800 : Break before Dinner====<br />
====1830 : Dinner ====<br />
* Bonefish Grill is a nearby 10 min drive away - https://locations.bonefishgrill.com/virginia/newport-news<br />
* Sign-up on Tuesday or send me an e-mail if you won't be at the meeting, but would like to join<br />
* I will be available to drive our visitors, leaving ResFac at 1815<br />
<br />
== Agenda: Wednesday, 30 November ==<br />
<br />
====1000-1300 : Presentations & Discussion====<br />
* Room: Test Lab Rm. 1227 (reserved 0930-1330)<br />
* Zoom: https://jlab-org.zoomgov.com/j/1604775942?pwd=c0xSZ0Y1L1FwemppNjBmRGxscGkxQT09<br />
* (20+10) M. Mamun (JLab) - TE011 Magnetometer Cavity Studies at the GTS<br />
* (20+10) B. Roberts (Electrodynamic) - Non-invasive Magnetometry and Polarimetry [[media:EDM-Storage ring meeting 11-22.pptx]]<br />
* (20+10) H. Soltner (Juelich) - Electric & Magnetic Deflectors in the EDM Prototype Ring [[media:EDMStorage Rings Meeting - Helmut Soltner.pptx]]<br />
* (20+10) G. Palacios-Serrano (JLab) - JLab Wien Filter in the context of pEDM [[media: Wien_filter_for_pEDM.pptx]]<br />
* (20+10) J. Guo (JLab) - Harmonically Resonant RF Deflecting Cavity at the UITF [[media:Beam Test of the JLEIC Harmonic Kicker at the UITF.pptx]]<br />
<br />
====1300-14:30 : Break for Lunch====<br />
====1430-1700 : Open discussion====</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:Wien_filter_for_pEDM.pptx&diff=28886File:Wien filter for pEDM.pptx2022-11-30T15:39:05Z<p>Gabrielp: </p>
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<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=Gabriel_Palacios-Serrano&diff=28451Gabriel Palacios-Serrano2022-09-02T14:25:36Z<p>Gabrielp: /* 18 in gun: */</p>
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<div>*[https://drive.google.com/file/d/1FpWgPuf9JgBxLSfFNQE8-ZHq7Sncs88N/view PhD Dissertation defense March 23 2021]<br />
*[[Media:Gabriel's thesis outline draft Feb 2019 Rev00.docx]] <br />
<br />
------------------------------------------------------------<br />
== HV insulator for 500 kV: ==<br />
** Exploring the use of the receptacle and the sizes of the SF6 spool [[Media:HV_insulator-1st_month.pptx]]<br />
<br />
== 18 in gun: ==<br />
** Kick and angle after S&A found a 0.5 mm anode deviation [[Media: CIS-R30-3_slots_SURVEYED_CHECK_crashed.pptx]]<br />
** Comparing Shields to answer the question: Can we use a smaller shield for op at -200 kV? [[Media: GTS_gun_with_CEBAF_anode_Shields.pptx]]<br />
** Exploring the anode location to cancel vertical kick [[Media:18in_gun_anode_studies.pptx]]<br />
<br />
== Wien filter stuff: ==<br />
'''12th International Particle Accelerator Conference - IPAC’21, May 24-28, 2021''' https://www.ipac21.org/#<br />
** Wien filter submitted after JLab internal review approval [[Media:Gabriel Palacios Wien filter Abstract IPAC21 FINAL.docx]]<br />
** Poster slides [[Media:IPAC_2021_poster_slides_final_Gabriel_Palacios.pptx]]<br />
<br />
Summary comparing GPT results with ideal E-field CST model compared to actual surveyed Vertical Wien assembly. <br />
The presentation also indicates the location in the O group drive of the various CST-generated E-field maps and GPT beam dynamics simulations.<br />
The Horizontal beam assembly electrode assembly is < 100 micron difference in pitch along the beam path. There was no need to generate a new field map. <br />
*[[Media:Vertical Wien GPT sims with spline electrodes Surveyed.pptx]]<br />
<br />
Spline electrode GPT simulations<br />
* [[Media:Wien_filter_GPT_7_Spline_electrode.pptx ]]<br />
<br />
Asymmetric bias GPT simulations<br />
* [[Media:Wien_filter_GPT_6.pptx ]]<br />
<br />
Inter-plate gap GPT simulations<br />
* [[Media:Wien_filter_GPT_5.pptx ]]<br />
<br />
Optics of the Wien filter, final<br />
* [[Media:Wien_filter_GPT_4_FINAL.pptx ]]<br />
<br />
Optics of the Wien filter, first try<br />
* [[Media:Wien_filter_GPT_3.pptx ]]<br />
<br />
Bolts and washers (metal and alumina sims).<br />
* [[Media:Wien_filter_bolts_and_washers.pptx ]]<br />
<br />
Exploring the reduction on the inter-plate gap.<br />
* [[Media:Wien_filter_shorter_plate_gaps.pptx ]]<br />
<br />
Double thickness mounting tab sims.<br />
* [[Media:Wien_filter_mounting_tab.pptx ]]<br />
<br />
Wien filter 6: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_6.pptx ]] <br />
<br />
Wien filter 4: What do we need for the 200 kV Wien filter using the UITF one as a base?<br />
* [[Media:Wien_filter_4.pptx ]]<br />
<br />
Wien filter 3: I measured the vacuum lab's Wien filter and checked what we can scavenge for the 40 kV feedthrough version.<br />
* [[Media:Wien_filter_3.pptx ]]<br />
<br />
Wien filter 2: Simulation results for the 40 kV feedthrough for Wien filter at UITF.<br />
* [[Media:Wien_filter_2.pptx ]]<br />
<br />
Wien filter 1: Simulation results for the existing (05/22/2019) Wien filter at UITF.<br />
* [[Media:Wien_filter_1.pptx ]]<br />
<br />
------------------------------------------------------------<br />
<br />
== Gun related ==<br />
<br />
'''Solidworks sumary'''<br />
<br />
* [[Media:GTS_gun_model_sumary.pdf]]<br />
* [[Media:T-cathode_gun_model_sumary.pdf]]<br />
<br />
<br />
'''Data taking runs''' <br />
<br />
UITF T-cathode electrode vs Small Shield: BPM data and centering in first lens at 200 [kV]<br />
* Rev5 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-8.pptx]]<br />
* Rev4 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-7.pptx]]<br />
* Rev3 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-6.pptx]]<br />
* Rev2 [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-5.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-4.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV-3.pptx]]<br />
* [[Media:UITF_T-cathode_electrode_BPM_data_200_kV.pptx]]<br />
<br />
Log entry related to how the Laser XY stage moves along the X-axis<br />
* https://logbooks.jlab.org/entry/3704517<br />
<br />
Images of on axis QE run p2_2019-06-04_15_39 to calculate STEP-mm conversion factor<br />
* [[Media:QE scan fixed X 10000.png]]<br />
* [[Media:QE scan fixed Y 10000.png]]<br />
<br />
Ey difference for T-cathode and Small shield (From CST field maps)<br />
* [[Media:Ey difference for T-cathode and Small shield.PNG]]<br />
<br />
<br />
'''GPT, CST, COMSOL '''<br />
<br />
CST particle tracking of T-cathode, Small Shield and Big Shield @-200 kV<br />
* [[Media:Cathodes_particle_tracking_CST_1.pptx]]<br />
<br />
CORRECTION: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1_CORRECTED.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of GBacc on emittance. <br />
* [[Media:GTS_GPT_3.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -300 kV. This was produced using Yan's GTS parameters. Impact of field map interpolation step-size on emittance. <br />
* [[Media:GTS_GPT_2.pptx]]<br />
<br />
GPT results for the sphere long anode 9cm gap at -200 kV. This was produced using Yan's GTS parameters. We are trying to find out why is the measurements and simulated emittance so different. <br />
* [[Media:GTS_GPT_1.pptx]]<br />
<br />
THIS FILE HAS BEEN CORRECTED: CST and GPT info for the T-shape, mushroom, small mushroom, sphere small anode 6cm gap, sphere long anode 6cm gap, sphere long anode 9cm gap at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:Guns_CST_1.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters. This is the same as the previous entry but shows extra slides with comparisons of the three cathodes wth one metric as requested by Matt. <br />
* [[Media:New_CEBAF_gun_CST_4_2.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV. This file has the CEBAF parameters.<br />
* [[Media:New_CEBAF_gun_CST_4.pptx]]<br />
<br />
Preliminary GPT results for the T-cathode vs Mushroom vs Sphere at -200 kV.<br />
* [[Media:New_CEBAF_gun_CST_3.pptx]]<br />
<br />
Test shields 1 to 7 simulations on CST for the -200 kV new CEBAF gun (and includes a bit of the GTS gun field maps at 200 kV w/small anode). <br />
* [[Media:New_CEBAF_gun_CST_2.pptx]]<br />
<br />
Test shields 1,2,3 & 4 simulations on CST for the -200 kV new CEBAF gun. <br />
* [[Media:New_CEBAF_gun_CST_1.pdf]] [[Media:New_CEBAF_gun_CST_1.pptx]]<br />
* [[Media:New_CEBAF_gun_CST_1_w-noshield.pdf]] [[Media:New_CEBAF_gun_CST_1_w-noshield.pptx]]<br />
<br />
Field maps for the -200 kV new CEBAF gun @-130 kV and -180 kV. <br />
* [[Media:Field_maps_for_the_new_CEBAF_gun_at_130_kV_and_180_kV.pdf]]<br />
<br />
Results for CST microwave studio simulations of the -300 kV GTS gun. <br />
* [[Media:GTS_CST_1.pdf]]<br />
<br />
Corrections on the simulation results for the -200 kV CEBAF gun paper. <br />
* [[Media:COMSOL_corrected.pdf]]<br />
<br />
Document with details on the Pierce geometry angle variations for the -300 kV GTS gun. <br />
* [[Media:GTS COMSOL 8.pdf]]<br />
<br />
COMSOL simulations for 300kV and 200kV guns upper shields<br />
* [[Media:300kV_COMSOL_upper_shields.pdf]]<br />
* [[Media:200kV_COMSOL_upper_shield.pdf]]<br />
<br />
COMSOL modeling comparing CEBAF 130kV white insulator no shed versus Upgrade 200kV black insulator with shed.<br />
(Both guns biased at -200kV)<br />
* [[Media:COMSOL comparison CEBAF 130kV to 200kV upgrade.pdf]]<br />
* [[Media:COMSOL ceramic conductivity.pdf]]-</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:CIS-R30-3_slots_SURVEYED_CHECK_crashed.pptx&diff=28450File:CIS-R30-3 slots SURVEYED CHECK crashed.pptx2022-09-02T14:24:15Z<p>Gabrielp: </p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=Electrostatic_and_beam_dynamics_simulations&diff=28363Electrostatic and beam dynamics simulations2022-08-16T17:31:07Z<p>Gabrielp: </p>
<hr />
<div>*[[Media:All of our photoguns 200 kV comparison CST and GPT.pptx]]<br />
<br />
<br />
<br />
*[https://wiki.jlab.org/ciswiki/index.php/18%22_Photogun_ala_GTS Back to 18" Photogun page]<br />
<br />
== CIS-ASY-R30-3: ==<br />
* Hinged anode: Tilted [[Media: R30-3_Shauns_hinged_anode_FINER_MESH.pptx]]<br />
* 6-SLOTS VS 12-SLOTS tube: Potentials [[Media: CIS-R30-3_slots_potential_for_Joe.pptx]]<br />
* 6-SLOTS VS 12-SLOTS tube: Ion tracking with CST [[Media: CIS-R30-3_slots_TRACKING.pptx]] <br />
* 6-SLOTS VS 12-SLOTS tube [[Media: R30-3_SLOTS.pptx]] <br />
* Upper shield [[Media: R30-3_Upper_shield.pptx]]<br />
* Comparing Shields to answer the question: Can we use a smaller shield for op at -200 kV? [[Media: GTS_gun_with_CEBAF_anode_Shields.pptx]]<br />
* Exploring the anode location to cancel vertical kick [[Media:18in_gun_anode_studies.pptx]]<br />
* Beam dynamics response to anode position and tilt [[Media:GTS_gun_with_CEBAF_anode.pptx]]</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:R30-3_Shauns_hinged_anode_FINER_MESH.pptx&diff=28362File:R30-3 Shauns hinged anode FINER MESH.pptx2022-08-16T17:28:49Z<p>Gabrielp: Gabrielp uploaded a new version of File:R30-3 Shauns hinged anode FINER MESH.pptx</p>
<hr />
<div></div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=CIS_Conference_and_Workshop_Proceedings&diff=27977CIS Conference and Workshop Proceedings2022-07-05T15:19:26Z<p>Gabrielp: </p>
<hr />
<div>==2022==<br />
'''IEEE Conference on Electrical Insulation and Dielectric Phenomena, Denver, CO, October 30 - November 02, 2022''' [https://ceidp.org IEEE CEIDP 2022]<br />
*G. Palacios-Serrano, C. Hernandez-Garcia, D. Bullard, J. Grames, and M. A. Mamun, "Preliminary High Voltage Tests of a 500 kV DC cable-fed Inverted Insulator feedthrough in SF6"<br />
<br />
'''66th ICFA Advanced Beam Dynamics Workshop on Energy Recovery Linacs (ERL2022) - Cornell University, Oct 3-6''' [https://indico.him.uni-mainz.de/event/108/]<br />
* J. Grames (invited) "Spin polarized electron beam sources for high current"<br />
<br />
'''Workshop on Polarized Sources Targets and Polarimetry (PSTP22) - Mainz, Germany, Sept 26-29 2022''' [https://indico.him.uni-mainz.de/event/108/]<br />
* Gabriel, ...<br />
* Joe, ...<br />
<br />
'''North American Particle Accelerator Conference (NA-PAC'22) - Albuquerque, New Mexico 7-12 August 2022''' [https://attend.ieee.org/napac-2022/ NA PAC 2022]<br />
* G. Palacios-Serrano, C. Hernandez-Garcia, P. Adderley, D. Bullard, J. Grames, and M. Poelker, "High-gradient Wien spin rotators at Jefferson Lab"<br />
* Carlos,...<br />
* Mamun, ...<br />
* R. Suleiman, V. S. Morozov, Ya. S. Derbenev, "Measuring the Electric Dipole Moment of the Electron in a Two-energy Spin-Transparent Storage Ring", [[media:NAPAC22_eEDM_abstract.docx | Abstract]] <br />
* M. Bruker, R. Bachimanchi, J. Grames, M. McCaughan, J. Musson, T. Plawski, M. Poelker, T. Powers, H. Wang, Y. Wang: "Operational Experience of the New Booster Cryomodule at the Upgraded Injector Test Facility". [[media:PAC 2022 Max Abstract.pdf | Abstract]]<br />
* M. Bruker, J. Grames, C. Hernandez-Garcia, V. M. Lizárraga-Rubio, M. Poelker, C. A. Valerio-Lizárraga and J. T. Yoskowitz "New Results at JLab Describing Operating Lifetime of GaAs Photo-guns" [[media:Grames-NAPAC-v3.docx | Abstract]] <br />
<br />
'''13th International Particle Accelerator Conference (IPAC’22) - Bangkok, Thailand on 12-17 June 2022''' [https://www.ipac22.org IPAC 2022]<br />
*S. Habet, R. Bodenstein, A. Bogacz , J. Grames, A. Hofler, R. Kazimi, V. Kostrun , F. Lin, Y. Roblin, K. Smolenski, M. Stefani, R. Suleiman, A. Sy, D. Turner, A. Ushakov, C.A. Valerio-Lizarraga, E. Voutier, Y. Zhang, "CW polarized positron beams for 12 GeV CEBAF" [[media:IPAC22-Positrons-abstract.pdf]]<br />
<br />
* S. Zhang,...<br />
<br />
* S. Pokerel, ...<br />
<br />
'''J-Future Workshop, Jefferson Lab / Messina University, 28-30 March 2022''' [https://indico.jlab.org/event/520/ workshop website link]<br />
* J. Grames "Ce+BAF : Considerations and Prospects for Polarized (and unpolarized) Positron Beams" [[media:J-Future-Grames.pdf]] [[media:J-Future-Grames-Final.pptx]]<br />
<br />
'''Snowmass Polarized Positron Sources Workshop, March 1, 2022''' [https://indico.fnal.gov/event/52959/]<br />
<br />
* J. Grames, "Polarized positron source program at JLab"<br />
** slides - [[media:Grames-Positron-FINAL.pptx]]<br />
** contribution - [[media:Snowmass_Positron_Grames_Final.docx]]<br />
<br />
'''Snowmass Electron Source Workshop, February 16-18, 2022''' [https://indico.fnal.gov/event/46053/]<br />
<br />
* M. Poelker, "Cathode technologies to produce highly spin-polarized electron beams" [[media:snowmass_cathode technologies_poelker.pptx]]<br />
<br />
* J. Grames, "Capability and Prospects for Polarized Beams from GaAs DC Photogun" [[media:Grames_Snowmass2021_FINAL.pptx]]<br />
<br />
==2021==<br />
'''IEEE Conference on Electrical Insulation and Dielectric Phenomena, Vancouver, BC, Canada, December 12-15''' [https://ceidp.org IEEE CEIDP 2021]<br />
<br />
*C. Hernandez-Garcia, G. Palacios-Serrano, P. Adderley, D. Bullard, J. Grames, M. A. Mamun1, M. Poelker, M. Stutzman, R. Suleiman, Y. Wang, and S.A.K. Wijethunga "Inverted Geometry Ceramic Insulators in High Voltage DC Electron Guns for Accelerators" [[Media:Inv insulators paper published 2021 IEEE conf on elec insu and deil phenomena.pdf]]<br />
<br />
'''Photocathode Physics for Photoinjectors, SLAC, November 10-12, 2021''' [https://conf.slac.stanford.edu/photocathode-physics-photoinjectors-2021/ P3 Workshop]<br />
<br />
'''AVS Symposium, Charlotte NC, October 24-29'''<br />
<br />
'''24th International Symposium on Spin Physics (SPIN2021) October 18-22, 2021, Matsue, Japan - https://indico2.riken.jp/event/3082/'''<br />
<br />
* J. M. Grames, C. K. Sinclair, M. Poelker, X. Roca-Maza, M. L. Stutzman, R. Suleiman, Md. A. Mamun, M. McHugh, D. Moser, J. Hansknecht, B. Moffit and T. J. Gay "High Precision 5 MeV Mott Polarimeter" [[media:Grames-Spin2021.docx]] [[media:Grames_SPIN2021.pdf]] [[media:SPIN2021-GRAMES-103.pdf]]<br />
<br />
* M. Stefani and B. van der Geer, [[media:SPIN2021_Stefani.pdf | New Spin Tracking Software Developed For General Particle Tracer]], SPIN 2021<br />
<br />
* R. Suleiman, "EDM in Small Rings": [[media:EDM_SmallRings_Suleiman_Spin2021.pdf]]<br />
<br />
<br />
'''Mini-Symposium Advancements and Opportunities of Polarized Targets and Beams [http://web.mit.edu/dnp2021/index.html APS DNP Meeting, Boston Oct 11-14, 2021]'''<br />
<br />
* Shukui ?<br />
<br />
'''12th International Particle Accelerator Conference - IPAC’21, May 24-28, 2021''' https://www.ipac21.org/#<br />
<br />
* G. Palacios, P. Adderley, H. Baumgart, J. Benesch, D. Bullard, J. Grames, C. Hernandez-Garcia, A. Hofler, D. Machie, M. Poelker, M. Stutzman and R. Suleiman, "A 200 keV Wien Filter Spin Rotator Design and High Voltage Evaluation" [[Media:Gabriel Palacios Wien filter Abstract IPAC21 FINAL.docx | Abstract]][[Media:IPAC_2021_poster_slides_final_Gabriel_Palacios.pptx | Poster]] [[Media:Mopab324(1).pdf | Proceedings]]<br />
<br />
* J. T. Yoskowitz , G. A. Krafft, G. Palacios-Serrano, S. Wijethunga, J. Grames, J. Hansknecht, C. Hernandez-Garcia, M. Poelker, M. Stutzman, R. Suleiman and S. B. van der Geer, "IMPROVING THE OPERATIONAL LIFETIME OF THE CEBAF PHOTO- GUN BY ANODE BIASING" [[:File:Yoskowitz_IPAC2021_BiasedAnode_Abstract_2.docx | Abstract]] [[:File:WEPAB104.pdf | Proceedings]]<br />
<br />
* J. T. Yoskowitz , G. A. Krafft, S. B. van der Geer, J. Grames, C. A. Valerio Lizarraga "SIMULATING ELECTRON IMPACT IONIZATION USING A GENERAL PARTICLE TRACER (GPT) CUSTOM ELEMENT" [[:File:Yoskowitz_IPAC2021_GPT_Abstract_2.docx | Abstract]] [[:File:WEPAB105.pdf | Proceedings]]<br />
<br />
* S.A.K. Wijethunga , J.R. Delayen, G.A. Krafft , G. Palacios-Serrano, M.A. Mamun, C. Hernandez-Garcia, R. Suleiman, M. Poelker, J. Benesch, "REDESIGN OF THE JEFFERSON LAB -300 kV DC PHOTO-GUN FOR HIGH BUNCH CHARGE OPERATIONS" [[Media:WEPAB092.pdf|Proceedings]] [[Media:REDESIGN OF THE JEFFERSON LAB -300 kV DC PHOTO-GUN FOR HIGH BUNCH CHARGE OPERATIONS_poster.pdf|Poster]] <br />
<br />
* S. A. K. Wijethunga, J. R. Delayen, G. A. Krafft, M. A. Mamun, R. Suleiman, M. Poelker, S. Zhang, J. Benesch, "SPACE CHARGE EFFECT IN LOW ENERGY MAGNETIZED ELEC-TRON BEAM" [[Media:WEPAB093.pdf|Proceedings]] [[Media:SPACE CHARGE EFFECT IN LOW ENERGY MAGNETIZED ELECTRON BEAM_poster.pdf|Poster]] <br />
<br />
* Marcy Stutzman, Charles Hetzel, "Pressure Simulations for the EIC Interaction Region" [[media:WEPAB340.pdf]] [[media:WEPAB340_poster.pdf]]<br />
<br />
'''2021 International Workshop on Future Linear Colliders - LCWS2021, March 15-18, 2021''' https://indico.cern.ch/event/995633/<br />
* Proceedings https://www.slac.stanford.edu/econf/C2103151/<br />
* [[Media:Hernandez-Garcia JLab LCWS 500 kV insulators.pptx]]<br />
<br />
==2020==<br />
<br />
'''2020 Fall Meeting of the APS Division of Nuclear Physics Thursday–Sunday, October 29–November 1 2020'''<br />
:-J. Grames "Highly spin polarized electron and positron beams at a compact accelerator facility"<br />
:Session link: http://meetings.aps.org/Meeting/DNP20/APS_Invited [[media:APSDNP2020-Grames_FINAL_150dpi.pptx]]<br />
<br />
:-N. Trotta, J. Grames, F. Benmokhtar "Simulations of Positron Distributions from a Polarized Electron Beam" (poster), [[media:Trotta_Nicholaus_JA_FINAL.pptx]]<br />
<br />
'''Americas Workshop on Linear Colliders 2020''' (https://agenda.linearcollider.org/event/8622/overview)<br />
<br />
'''CFNS Workshop on Beam Polarization and Polarimetry at EIC ([https://indico.bnl.gov/event/7583/]) June 26, 2020'''<br />
:J. Grames "Production of Polarized Positrons at Jefferson Lab" (slides) [[media:Grames_CNFS_FINAL.pptx]]<br />
:T. Gay "High-Accuracy 5-MeV Mott Polarimetry at the CEBAF Injector" (slides) [[media:EIC Mott Talk v3.pdf]] [[media:EIC Mott Talk v3.pptx]] <br />
<br />
'''[http://ipac2020.vrws.de International Particle Accelerator Conference IPAC'20] (Caen, France, May 2020)'''<br />
: F. Lin, Y.S. Derbenev, J.M. Grames, J. Guo, V.S. Morozov, E.J-M. Voutier, Y. Zhang, "Exploration of Positron Beams for New Frontier Research" (MOVI04), also the presentation is available at https://www.ipac20.org/fanglei-lin-jlab/ , however, it requires to log into the IPAC20 site.<br />
<br />
==2019==<br />
'''International Workshop on Future Linear Colliders (LCWS 2019) ([http://epx.phys.tohoku.ac.jp/LCWS2019/]) October 28 - November 1, Sendai Japan'''<br />
* Compressed PowerPoint (~19 MB) => [[media:LCWS19_Grames_compressed.pptx]] <br />
<br />
'''2019 Workshop on Polarized Sources, Targets, and Polarimetry (PSTP 2019) ([https://conference.sns.gov/event/139/overview]) September 23-27 2019, Knoxville, TN'''<br />
<br />
J. Yoskowitz, J. Grames, J. Hansknecht, C. Hernandez-Garcia, G. A. Krafft, M. Poelker, R.Suleiman, G. Palacios-Seranno, S. Wijethunga, S. B. Van Der Geer<br />
"New Simulations for Ion-Production and Back-Bombardment in GaAs Photo-guns"<br />
* [[:File:Yoskowitz_PSTP19_Presentation_FINAL_compressed.pptx | Presentation]]<br />
* [[:File:Yoskowitz_PSTP2019_Proceedings_Newest.pdf | Proceedings]]<br />
<br />
'''European Workshop on Photocathodes for Particle Accelerator Applications (EWPAA 2019) ([https://indico.psi.ch/event/6746/page/1353-welcome]) Paul Scherrer Institut, Villigen, Switzerland, from September 11 to 13, 2019'''<br />
* PowerPoint => [[media:EWPAA 2019_poelker.pptx]]<br />
<br />
'''10th International Particle Accelerator Conference (IPAC 2019) ([https://ipac19.org/]) MELBOURNE CONVENTION & EXHIBITION CENTRE, AUSTRALIA, 19 – 24 MAY 2019'''<br />
* PDF => [[media:IPAC 2019_zhang.pdf]]<br />
<br />
==2018==<br />
'''International Workshop on Future Linear Colliders (LCWS 2018) ([http://www.uta.edu/physics/lcws18/index.html]) October 22-26, 2018, University of Texas - Arlington'''<br />
* PowerPoint (37 MB) => [[media:LCWS18_Grames_FINAL.pptx]] <br />
* PDF (40 MB and animation does not work) => [[media:LCWS18_Grames_FINAL.pdf]]<br />
<br />
'''Photocathode Physics for Photoinjectors (P3) Workshop([https://www.lanl.gov/conferences/photocathode-physics-photoinjectors/index.php website]), October 15-17, 2018, Santa Fe, New Mexico'''<br />
* M.A. Mamun, "Magnetized Electron Source for JLEIC Electron Cooler" [[media:2018_P3_JLab Magnetized Gun_mamun.pdf]]<br />
'''Spin 2018 ([http://spin2018.unife.it/ website]) September 10-14, 2018, Ferrara, Italy'''<br />
<br />
'''18th International Conference on Positron Annihilation ([https://www.bgsu.edu/icpa18.html website]), August 19-24, 2018, Orlando, Florida'''<br />
* J. Grames, "Polarized Beams – A Tale of Two Leptons" [[media:ICPA_Grames_FINAL.pptx]]<br />
<br />
'''Electrons for the LHC - LHeC/FCCeh and Perle Workshop ([https://indico.cern.ch/event/698368 website]), June 27-29, 2018'''<br />
* J. Grames, P. Adderley, B. Bullard, J. Hansknecht, C. Hernandez-Garcia, G. Palacios, M. Poelker, D. Moser, M. Stutzman, S. Zhang, "Milliampere beam studies using high polarization photocathodes at the CEBAF Photoinjector" [[media:LHeC18_Grames_Final.pptx]]<br />
<br />
'''9th International Particle Accelerator Conference (IPAC'18), Vancouver, British Columbia, Canada, April 29 to May 4, 2018'''<br />
<br />
* M.A. Mamun, P. Adderley, J. Benesch, B. Bullard, J. Delayen, J. Grames, J. Guo, F. Hannon, J. Hansknecht, C. Hernandez-Garcia, R. Kazimi, G. Krafft, M. Poelker, R. Suleiman, M. Tiefenback, Y. Wang, S. Wijethunga, and S. Zhang, "Production of Magnetized Electron Beam from a DC High Voltage Photogun" [[media:THPMK108_poster_Mamun_IPAC18.pdf]], [[media:THPMK108_Proceedings_Mamun_IPAC18.pdf]]<br />
<br />
* S.A.K. Wijethunga, M.A. Mamun, F.E. Hannon, G.A. Krafft, J. Benesch, R. Suleiman, M. Poelker, J.R. Delayen "Simulation Study of the Magnetized Electron Beam" [[Media:THPAK071_poster_Sajini_IPAC'18.pdf]], [[Media:THPAK071_proceedings_Sajini_IPAC'18.pdf]]<br />
<br />
* F.E.Hannon: "Design of a High Charge, Low Energy, Magnetized Electron Injector" [[Media:THPMK107.pdf]], [[Media:THPMK107_poster.pdf]]<br />
<br />
==2017==<br />
'''International Workshop on Polarized Sources, Targets and Polarimeters (PSTP), Oct 15 - 20, 2017, Daejeon, South Korea'''<br />
* Wei Lui, Matt Poelker, Shukui Zhang, Marcy Stutzman, "Spin Polarization Sensitivity of Electrons Emitted from Bulk GaAs Photocathodes" [[media:PSTP2017_Wei Lui_polarization study bulk GaAs.pptx]]<br />
<br />
* M. Poelker, P. Adderley, J. Benesch, B. Bullard, J. Grames, F. Hannon, J. Hansknecht, C. Hernandez-Garcia, R. Kazimi, G. Krafft, M. A. Mamun, R. Suleiman, M. Tiefenback, S. Zhang, Y. Wang, S. Wijiethunga and J. Yoskovitz, "Magnetized Electron Beam for JLEIC Re-circulator Cooler Ring" [[media:PSTP2017_Poelker_magnetized beam.pptx]], [[media: Proceedings of Science submission, "Magnetized Electron Beam for JLEIC Re-circulator Cooler Ring".pdf]] <br />
<br />
* Joe Grames, Phil Adderley, John Hansknecht, Reza Kazimi, Matt Poelker, Daniel Moser, Marcy Stutzman, R. Suleiman Shukui Zhang "Milliampere beam studies using high polarization photocathodes at the CEBAF Photoinjector" [[media:PSTP2017_Grames_v1.pptx]] [[media:PSTP2017_Grames_Final.pdf]]<br />
<br />
'''International Workshop on Physics with Positrons @ JLab (JPOS), Sep 12 - 15, 2017, Jefferson Lab, Newport News, VA'''<br />
* [[media:Larry Cardman_The PEPPo method for polarized positrons and PEPPo II.pptx]]<br />
* [https://aip.scitation.org/toc/apc/1970/1?Track=CPPERP1970&dm_i=2FAM%2C197ME%2C8DZK6R%2C40LG2%2C1&expanded=1970 AIP Conf. Proc. 1970]<br />
<br />
'''NSTAR 2017, the 11th International Workshop on the Physics of Excited Nucleons,, August 20-23, 2017, University of South Carolina, Columbia, SC''' [http://nstar2017.physics.sc.edu/ Scientific Program]<br />
* J. Grames [[media:NSTAR_Grames_Final.pptx]]<br />
<br />
==2016==<br />
'''Photocathode Physics for Photoinjectors, October 17-19, 2016, JLab'''<br />
* M. A. Mamun, "Study of bialkali antimonide photocathode on Niobium substrate" [[media:Mamun Nb substrate.pptx]]<br />
* W. Liu, "The effects of ion bombardment on bulk GaAs photocathodes with different surface-cleavage planes" [[media:Ion bombardment.pptx]] <br />
<br />
'''2016 Fall Meeting of the APS Division of Nuclear Physics, Vancouver BC, Canada, 13-16 October 2016'''<br />
* B. Hardy and J. Grames, "Magneto-Optic Kerr Effect in a Magnetized Electron Gun" [[media:HardyDNP.pptx]] [[media:HardyDNP.pdf]]<br />
* D. Brakman, C. Cuevas, G.P. Gilfoyle, J. Grames, B. Gunning, "Uniformly Rastering an Electron Beam on a Polarized Cryotarget" [[media:BrakmanDNP.pptx]] [[media:BrakmanDNP.pdf]]<br />
<br />
'''28th Linear Accelerator Conference, LINAC 16, East Lansing, Michigan, 25-30 September 2016'''<br />
* M. Drury, G. Eremeev, J. Grames, R. Kazimi, M. Poelker, J. Preble, R. Suleiman, Y. Wang, M. Wright, "4 K SRF Operation of the 10 MeV CEBAF Photo-Injector" [[media:MOLPR010_proceedings.pdf]] [[media:MOLPR010_poster.ppt]]<br />
<br />
'''SPIN 2016, Urbana-Champaign, 26-30 September 2016'''<br />
* M. Poelker "12 GeV CEBAF: Accelerator Systems and Polarized Beams" [[media:SPIN2016_Poelker_12GeV CEBAF.pdf]] or view ppt file at https://indico.cern.ch/event/570680/contributions/2308608/<br />
* J. Grames, "Production of Highly Polarized Positrons Using MeV Energy Polarized Electrons" presentation [[media:SPIN_Grames_Final.pptx]] and proceedings [[media:Spin2016Grames.pdf]]<br />
* T. Gay, "High-Precision 5-MeV Mott Polarimetry at the JLab Injector", SPIN 2016 @ UIUC, Sep 26-30, 2016 [[media:SPIN16_Gay.pdf]]<br />
<br />
'''ECT Workshop: Physics beyond the standard model and precision nucleon structure , Trento, Italy, 1-5 August, 2016'''<br />
* A. Freyberger, "CEBAF Polarized Beam for Parity Violation Experiments in the 12 GeV era" [[media:ECT2016_APF.pdf]]<br />
<br />
'''7th International Particle Accelerator Conference, BEXCO, Busan, Korea, 8-13 May 2016'''<br />
* R. Kazimi, J. M. Grames, J. Hansknecht, A. Hofler, G. Lahti, T. E. Plawski, M. Poelker, R. Suleiman, Y. Wang, "Four Beam Generation for Simultaneous Four-Hall Operation at CEBAF" [[media:THPOY060-Final.PDF]] [[media:THPOY060_poster.pdf]] [http://accelconf.web.cern.ch/AccelConf/ipac2016/papers/thpoy060.pdf Proceedings]<br />
<br />
'''APS April Meeting, Salt Lake City Utah, 16-19 April 2016'''<br />
* M. Poelker, "Polarized electrons for parity violation experiments at Jefferson Lab" [[media:poelker APS mtg slides.pptx]]<br />
<br />
==2015==<br />
'''Polarized Sources, Targets and Polarimetry Workshop (PSTP'15), Bochum, Germany, September 14-18, 2015'''<br />
* J. Grames, "A Low-Energy Source of Highly Spin-Polarized Positrons" [[Media:PSTP15_Grames.docx]]<br />
* M. Poelker, "Ongoing efforts to construct a 350 kV dc high voltage photogun with inverted insulator geometry" [[Media:PSTP15_poelker_building a 350kV gun.pptx]]<br />
<br />
'''Accelerator Operations Retreat, Jefferson Lab, July 15-17, 2015'''<br />
* J. Grames, "Laser and Injector Upgrade for 4-Hall Operations" [[Media:OpsRetreat15_Grames.pptx]]<br />
<br />
'''Intense Electron Beams Workshop, Cornell Unversity, June 17-19, 2015'''<br />
* J. Grames, "High Current Polarized Electron Sources" [[Media:IEB_Grames_Final.pptx]]<br />
* J. Grames, "Convener Summary - Electrons Sources and Polarimeters" [[Media:IEB_Technology_Grames.pptx]]<br />
* J. Grames, "Plenary Open Topics - PEPPo" [[Media:IEB_PEPPo_Grames.pptx]]<br />
<br />
'''IPAC2015, Richmond, VA May 3-9, 2015'''<br />
* M.L.Stutzman, P.A.Adderley, M.Poelker, Md.A.Mamun "Vacuum Characterization and Improvement for the Jefferson Lab Polarized Electron Source" [[Media:StutzmanPosterIPAC2015.pptx]] [[Media:StutzmanProceedingsIPAC2015.docx]] <br />
<br />
'''IPAC2015, Richmond, VA May 3-9, 2015'''<br />
* S.Zhang, M.L.Stutzman, M.Poelker, Y. Chen, and A. Moy, "Observation of Significant Quantum Efficiency Enhancement from a Polarized Photocathode with Distributed Brag reflector" [[Media:SZhangPosterIPAC2015.pdf]] [[Media:SZhangProceedingsIPAC2015.pdf]]<br />
<br />
'''IPAC2015, Richmond, VA May 3-9, 2015'''<br />
* A. Adeyemi, J. Grames, R. Suleiman for the PEPPo Collaboration, "PEPPo: Using a Polarized Electron Beam to Produce Polarized Positrons" [[Media:AdeyemiPosterIPAC2015.pdf]] [[Media:AdeyemiProceedingsIPAC2015.pdf]]<br />
<br />
==2014==<br />
''' VII Congreso Internacional de Ingeniería Física, November 24 - 28, 2014, Universidad Autónoma Metropolitana, Ciudad de México'''<br />
* M. Poelker, "Future Trends for Photoelectron Guns at Accelerators" [[Media:Electron Guns at Jefferson Lab.pptx]]<br />
<br />
'''Proton Ring EDM Collaboration Meeting, November 10 - 11, 2014, Brookhaven National Lab'''<br />
* M. Poelker, "High Voltage Studies at Jefferson Lab" [[Media:Can our experience building DC high voltage photoguns help the Proton Ring EDM effort?.pptx]]<br />
<br />
'''P3 Workshop, November 3 - 5, Lawrence Berkeley National Laboratory, Berkeley, CA USA'''<br />
P3 = Physics of Photocathodes for Photoinjectors [https://sites.google.com/a/lbl.gov/photocathode-physics-for-photoinjectors/announcement]<br />
* R. Mammei, M. Poelker, "Performance of alkali-antimonide photocathodes inside a JLab dc high voltage photogun" [[Media:CsK2Sb lifetime studies_P3.pptx]]<br />
* M.A. Mamun, M. Poelker, "Alkali-antimonide photocathodes using co-deposition and an effusion source" [[Media:Bi-alkali photocathodes and effusion source_P3.pptx]] <br />
<br />
<br />
'''41st ICMCTF, April 28 - May 2, 2014, San Diego, CA, USA'''<br />
* M.A.Mamun, E. Forman, R. Taus, M. Poelker, A.A. Elmustafa, "Evaluation of TiN-Coated Aluminum Electrodes for DC High Voltage Electron Guns" [[Media:Mamun_ICMCTF Conference_SanDiego_4_28_14.pptx]] <br />
<br />
'''Electron Ion Collider Workshop, March 17-21, 2014, Jefferson Lab'''<br />
* C. Hernandez-Garcia, J. Hansknecht, M. Poelker, "Status of the JLab 500 kV Inverted Gun"<br />
<br />
'''Electron Ion Collider Workshop, March 17-21, 2014, Jefferson Lab'''<br />
* J. Grames, P. Adderley, T. Gay, J. Hansknecht, C. Horowitz, M. McHugh, A. Opper, M.Poelker, X. Roca-Maza, C.Sinclair, M. Stutzman, R. Suleiman, "Precision Test of Mott Polarimetry in the MeV Energy Range"<br />
<br />
'''Electron Ion Collider Workshop, March 17-21, 2014, Jefferson Lab'''<br />
* J. Grames on behalf of PEPPo Collaboration "Polarized Electrons for Polarized Positrons: A Proof-of-Principle Experiment"<br />
<br />
'''Electron Ion Collider Workshop, March 17-21, 2014, Jefferson Lab'''<br />
* R. Suleiman, P. Adderley, J. Clark, S. Covert, J. Grames, J. Hansknecht, M.Poelker, M. Stutzman, "Operation of Jefferson Lab Polarized Electron Sources at High Currents"<br />
- Talk: [[Media:WEYAUD2_talk.pdf]] [[Media:WEYAUD2_talk.ppt]] <br />
- Proceedings: [[Media:WEYAUD2.pdf]] [[Media:WEYAUD2.docx]]<br />
<br />
==2013==<br />
<br />
'''XVth International Workshop on Polarized Sources, Targets, and Polarimetry''' [http://faculty.virginia.edu/PSTP2013/ Workshop Website]<br />
* J. Grames, on behalf of PEPPo Collaboration "Polarized Electrons for Polarized Positrons: A Proof-of-Principle Experiment" <br />
<br />
'''XVth International Workshop on Polarized Sources, Targets, and Polarimetry''' [http://faculty.virginia.edu/PSTP2013/ Workshop Website]<br />
* J. Grames, M. McHugh, C. Horowitz, M. Melnitchouk, A. Opper, M. Poelker, S. Rhodes, X. Roca-Maza, C. Sinclair, R. Suleiman, "Mott polarimeter upgrade at Jefferson Lab" [[Media:PSTP2013_Grames McHugh.pdf|PDF]]<br />
<br />
'''IPAC 2013, May 12-17, Shanghai, China'''<br />
* E. Voutier on behalf of the PEPPo Collaboration, "The Proof-of-Principle Experiment PEPPo"<br />
<br />
'''IPAC 2013, May 12-17, Shanghai, China'''<br />
* O. Dadoun, E. Froidefond, E. Voutier on behalf of the PEPPo Collaboration, "Characterization of the Analyzing Target of the PEPPo Experiment"<br />
<br />
'''IPAC 2013, May 12-17, Shanghai, China'''<br />
* A. Adeyemi, E. Voutier on behalf of the PEPPo Collaboration, "The Calibration of the PEPPo Polarimeter for Electrons and Positrons"<br />
<br />
'''PEB2013, Workshop to Explore Physics Opportunities with Intense, Polarized Electron Beams''' [http://web.mit.edu/lns/PEB_Workshop/ Workshop Website] [http://www.flickr.com/photos/rcowan/sets/72157633050445370/ Workshop photos]<br />
*M. Poelker, "High Current Polarized Electron Source" [[Media:MIT_PEBworkshop_poelker.pptx|PPTX]], [[Media:MIT_PEBworkshop_poelker.pdf|PDF]]<br />
<br />
== 2007 ==<br />
'''IPAC 2007, Albuquerque, New Mexico'''<br />
* J. Grames, P. Adderley, J. Brittian, J. Clark, J. Hansknecht, D. Machie, M.Poelker, M.L. Stutzman, R. Suleiman, K. Surles-Law, "LIFETIME MEASUREMENTS OF HIGH POLARIZATION STRAINEDSUPERLATTICE GALLIUM ARSENIDE AT BEAM CURRENT >1 MILLIAMP USING A NEW 100kV LOAD LOCK PHOTOGUN", Proceedings of PAC07, Albuquerque, New Mexico, USA, THPMS064 [[media:THPMS064.PDF]]<br />
<br />
<br />
<br />
== 1997 - 2012 ==<br />
Until this section updated please refer to '''[http://www.jlab.org/accel/inj_group/index.html Old CIS Homepage]'''</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=Electrostatic_and_beam_dynamics_simulations&diff=27572Electrostatic and beam dynamics simulations2022-04-06T17:02:58Z<p>Gabrielp: </p>
<hr />
<div>*[[Media:All of our photoguns 200 kV comparison CST and GPT.pptx]]<br />
<br />
<br />
<br />
*[https://wiki.jlab.org/ciswiki/index.php/18%22_Photogun_ala_GTS Back to 18" Photogun page]<br />
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== CIS-ASY-R30-3: ==<br />
* 6-SLOTS VS 12-SLOTS tube: Potentials [[Media: CIS-R30-3_slots_potential_for_Joe.pptx]]<br />
* 6-SLOTS VS 12-SLOTS tube: Ion tracking with CST [[Media: CIS-R30-3_slots_TRACKING.pptx]] <br />
* 6-SLOTS VS 12-SLOTS tube [[Media: R30-3_SLOTS.pptx]] <br />
* Upper shield [[Media: R30-3_Upper_shield.pptx]]<br />
* Comparing Shields to answer the question: Can we use a smaller shield for op at -200 kV? [[Media: GTS_gun_with_CEBAF_anode_Shields.pptx]]<br />
* Exploring the anode location to cancel vertical kick [[Media:18in_gun_anode_studies.pptx]]<br />
* Beam dynamics response to anode position and tilt [[Media:GTS_gun_with_CEBAF_anode.pptx]]</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=Electrostatic_and_beam_dynamics_simulations&diff=27571Electrostatic and beam dynamics simulations2022-04-06T17:01:21Z<p>Gabrielp: </p>
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<div>*[[Media:All of our photoguns 200 kV comparison CST and GPT.pptx]]<br />
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*[https://wiki.jlab.org/ciswiki/index.php/18%22_Photogun_ala_GTS Back to 18" Photogun page]<br />
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== CIS-ASY-R30-3: ==<br />
* Upper shield [[Media: CIS-R30-3_slots_potential_for_Joe.pptx]]<br />
* Upper shield [[Media: CIS-R30-3_slots_TRACKING.pptx]] <br />
* Upper shield [[Media: R30-3_SLOTS.pptx]] <br />
* Upper shield [[Media: R30-3_Upper_shield.pptx]]<br />
* Comparing Shields to answer the question: Can we use a smaller shield for op at -200 kV? [[Media: GTS_gun_with_CEBAF_anode_Shields.pptx]]<br />
* Exploring the anode location to cancel vertical kick [[Media:18in_gun_anode_studies.pptx]]<br />
* Beam dynamics response to anode position and tilt [[Media:GTS_gun_with_CEBAF_anode.pptx]]</div>Gabrielphttps://wiki.jlab.org/ciswiki/index.php?title=File:CIS-R30-3_slots_TRACKING.pptx&diff=27570File:CIS-R30-3 slots TRACKING.pptx2022-04-06T17:00:25Z<p>Gabrielp: </p>
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<div></div>Gabrielp