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| Line 1: |
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| | + | The polar Kerr effect will be tested as a possible in-situ probe of the magnetization of the photocathode. |
| | + | [[file:titlepagepic.jpeg|thumb]] |
| | | | |
| − | A significant portion of the experiments performed at Jefferson Lab require a polarized electron beam. A subset of these are parity violation experiments which have exceptionally stringent requirements on the quality of the electron beam. As the sign of the electron beam helicity reverses at the target of the experiment no other measurable quantity of the electron beam may change. This includes the beam intensity, polarization, position, angle, energy or spot size.
| + | === Wiki Logbook === |
| | | | |
| − | To ensure this beam quality, a significant effort occurs at the polarized electron source, where the laser beam and electron photogun combine to produce the intended electron beam. Also significant is the ability to accelerate the beam to high energy while transporting it to the experimental target, all while maintaining a parity quality electron beam (PQB).
| + | [[Kerr - June 1, 2016]] - Overview and outline |
| | | | |
| | + | [[Kerr - June 2, 2016]] - Discussion of Key Terms |
| | | | |
| | + | [[Kerr - June 6, 2016]] - Hand Magnet field measurements |
| | | | |
| | + | [[Kerr - June 7, 2016]] - Riad's Electromagnetic fields |
| | | | |
| | + | [[Kerr - June 8, 2016]] - Polarization and Saturation |
| | | | |
| − | ='''Parity Violation'''=
| + | [[Kerr - June 9, 2016]] - Optics Table and first Optics measurements |
| | | | |
| − | Discussion of parity violation can be found at NIST: ''The Fall of Parity'': [http://www.nist.gov/pml/general/parity/index.cfm]
| + | [[Kerr - June 10, 2016]] - Optics polarization measurements and Iron Alloys |
| | | | |
| | + | [[Kerr - June 13, 2016]] - Further Polarization |
| | | | |
| | + | [[Kerr - June 14, 2016]] - Mathematical explanations of MOKE |
| | | | |
| − | ='''Parity Violation Experiments'''=
| + | [[Kerr - June 15, 2016]] - First Magnet experiment |
| | | | |
| − | # JLab Hall A Parity Experiments (HAPPEx, PREx, C-REx, PVDIS): [http://hallaweb.jlab.org/parity/]
| + | [[Kerr - June 16, 2016]] - Second Magnet experiment |
| − | # JLab Hall C G0 Experiment: [http://www.npl.illinois.edu/exp/G0/G0Main.html]
| |
| − | # JLab Hall C QWeak Experiment: [http://www.jlab.org/qweak/]
| |
| − | # JLab Hall A Møller Experiment: [http://hallaweb.jlab.org/12GeV/Moller/]
| |
| − | # Mainz A4 Experiment: [http://wwwkph.kph.uni-mainz.de/A4//blog/]
| |
| | | | |
| | + | [[file:PEM.jpeg|thumb]] |
| | | | |
| | + | [[Kerr - June 17, 2016]] - Objectives and New Magnet Experiment |
| | | | |
| − | * The following table lists what has been achieved and the future requirements on PQB: [[media:jlab_parity_table_July2017.pdf]] [[media:jlab_parity_table_July2017.pptx]]
| + | [[Kerr - June 20, 2016]] - New Magnet and foil apparatus |
| | | | |
| − | [[file:jlab_parity_table_July2017.jpg|center|800px|]] | + | [[Kerr - June 21, 2016]] - Milestone, First Kerr measurement |
| | | | |
| | + | [[Kerr - June 22, 2016]] - Continued Iron foil, green light measurements |
| | | | |
| | + | [[Kerr - June 23, 2016]] - Pickoff, Alignment, New plans |
| | | | |
| − | ='''Selected References'''=
| + | [[Kerr - June 24, 2016]] - New Magnet Apparatus, pick-off, hard data |
| | | | |
| − | * ''Experimental Test of Parity Conservation in Beta Decay''.
| + | [[Kerr - June 27, 2016]] - Pick-off Analysis |
| − | C. S. Wu et al., Phys. Rev. '''105''' (1957) 1413 [http://dx.doi.org/10.1103/PhysRev.105.1413] [[media:PhysRev.105.1413.pdf]]
| |
| − | * ''Parity-Violating Electron Scattering and the Electric and Magnetic Strange Form Factors of the Nucleon''.
| |
| − | D. S. Armstrong and R. D. McKeown, Annu. Rev. Nucl. Part. '''62''' (2012) 337 [http://dx.doi.org/10.1146/annurev-nucl-102010-130419] [[media:annurev-nucl-102010-130419.pdf]]
| |
| − | * ''The Q<sub>weak</sub> experimental apparatus''.
| |
| − | T. Allison et al., Nucl. Instr. and Meth. A '''781''' (2015) 105 [http://dx.doi.org/10.1016/j.nima.2015.01.023] [[media:NuclInstrumMethA.781.105.pdf]]
| |
| | | | |
| | + | [[Kerr - June 28, 2016]] - the quest for the Absolute minimum |
| | | | |
| − | ='''Injector PQB Setup'''=
| + | [[Kerr - June 29, 2016]] - Correction to previous hypothesis |
| | | | |
| − | * ''SLAC's polarized electron source laser system and minimization of electron beam helicity correlations for the E-158 parity violation experiment''.
| + | [[Kerr - June 30, 2016]] - Multiple slope experiment |
| − | T. B. Humensky et al., Nucl. Instr. and Meth. A '''521''' (2004) 261 [http://dx.doi.org/10.1016/j.nima.2003.09.065] [[media:NuclInstrMethA.521.261.pdf]]
| |
| − | * ''Helicity correlated asymmetries caused by optical imperfections''.
| |
| − | K. Aulenbacher, Euro. Phys. J. A '''32''' (2007) 543 [http://dx.doi.org/10.1140/epja/i2006-10397-8] [[media:EuroPhysJA.32.543.pdf]]
| |
| | | | |
| | + | [[Kerr - July 1, 2016]] - New Red Laser setup, further explanation of slope data |
| | | | |
| | + | [[Kerr - July 5, 2016]] - Extrema, Data for Joe |
| | | | |
| − | ----- | + | [[Kerr - July 6, 2016]] - Red Left Right approach graphs and experiment |
| − | -----
| |
| | | | |
| | + | [[Kerr - July 7, 2016]] - The Photoelastic Modulator |
| | | | |
| | + | [[Kerr - July 8, 2016]] - Polarized light and it's interaction with modulating devices |
| | | | |
| − | ='''Mailing List'''=
| + | [[Kerr - July 11, 2016]] - PEM, Spectrum Analyzer, and Scope setup along with foil comparisons Riad's magnet info |
| − | * Accelerator Parity Quality Beam mailing list: acc_parity@jlab.org
| |
| − | * Web page for users of mailing list is: [https://mailman.jlab.org/mailman/listinfo/acc_parity]
| |
| | | | |
| | + | [[Kerr - July 12, 2016]] - 45 degree alignment, first PEM 1f and 2f measurements. |
| | | | |
| | + | [[Kerr - July 14, 2016]] - Abstract, further table setup, SCU, Lock-in Amplifier setup |
| | | | |
| − | ----- | + | [[Kerr - July 15, 2016]] - 2 Lock-in Amplifiers, Impedance levels, frequency locks |
| − | -----
| |
| | | | |
| | + | [[Kerr - July 16-17, 2016]] - The weekend derivation <O.o> |
| | | | |
| | + | [[Kerr - July 18, 2016]] - Rainbow Abstract, Kerr rotation/ellipticity vs magnetic field measurements, Dotting the i's crossing the t's |
| | | | |
| − | ='''Møller PQB'''=
| + | [[Kerr - July 19, 2016]] - B-field, Milestone moment, First Lock-in Amplifier measurement of Ellipticity and Theta |
| − | * Møller Beam Requirements: [[media:Moller.Beam.Requirements.pdf]]
| |
| | | | |
| | + | [[Kerr - July 20, 2016]] - Green Test, Mirror test, root mean square test.. Red fish, blue fish, Bfield fitting test |
| | | | |
| | + | [[Kerr - July 21, 2016]] - Green light test, Mirror with Red light, final slides |
| | | | |
| − | =='''Synchrotron Radiation'''==
| + | [[Kerr - July 22, 2016]] - 2nd Green light test, Mirror with green laser, Preparation documents for the MMF |
| | | | |
| − | * Synchrotron Radiation from Wikipedia, the free encyclopedia: [http://en.wikipedia.org/wiki/Synchrotron_radiation]
| + | [[Kerr - July 25, 2016]] - Green 1, 2, and Mirror comparison |
| − | * Synchrotron Radiation: [[media:CASA_SynchrotronRadiation.pdf]]
| |
| − | * US Particle Accelerator School lecture: [[media:USPAS_lecture_Barletta.pdf]]
| |
| − | * Synchrotron Radiation at 11 GeV and its adverse effect on PQB
| |
| | | | |
| | + | [[Kerr - July 26, 2016]] - Puck Assembly, initial Solenoid measurements |
| | | | |
| | + | [[Kerr - July 27, 2016]] - Moving the system, Component settings document |
| | | | |
| − | =='''Collaboration Presentations'''==
| + | [[Kerr - July 28, 2016]] - MMF ready and set to go, Null measurements |
| − | * Møller Collaboration Meeting January 23, 2015: [[media:Moller_23Jan15_poelker.pdf]] [[media:Moller_23Jan15_poelker.pptx]]
| |
| − | # Beam Monitoring: [[media:Moller_23Jan15_pitt.pdf]]
| |
| | | | |
| | + | [[Kerr - July 29, 2016]] - First MMF measurements..... and some adjustments |
| | | | |
| | + | [[Kerr - July 30, 2016]] - Comparisons of first Bench to MMF Kerr signals |
| | | | |
| − | =='''Other Presentations'''==
| + | [[Kerr - August 1, 2016]] - MMF measurements, smaller angle, farther distance, from foil |
| | | | |
| − | * ECT* Workshp, ''CEBAF Polarized Beam for Parity Violation Experiments in the 12 GeV era'', Arne Freyberger (August 4, 2016): [[media:ECT_CEBAF_PolarizedBeams_and_ParityViolation_August2016.pdf]]
| + | '''[[Kerr - August 5, 2016]] - Summary of MMF measurements''' |
| | | | |
| | + | === [[Kerr Papers]] === |
| | | | |
| | + | === [[Kerr Manuals]] === |
| | | | |
| − | -----
| + | === [[Kerr Safety]] === |
| − | -----
| |
| − | | |
| − | | |
| − | | |
| − | ='''QWeak PQB'''= | |
| − | | |
| − | | |
| − | | |
| − | =='''Accelerator Meetings'''== | |
| − | | |
| − | * Accelerator PQB Meeting August 13, 2009: [[media:PQB_Meeting_13Aug09.pdf]] [[media:PQB_Meeting_13Aug09.pptx]]
| |
| − | * Accelerator PQB Meeting June 2, 2009: [[media:PQB_Meeting_fHelReversal_02June09.pdf]] [[media:PQB_Meeting_fHelReversal_02June09.pptx]]
| |
| − | * Accelerator PQB Meeting June 2, 2009: [[media:PQB_Meeting_StatAna_02June09.pdf]] [[media:PQB_Meeting_StatAna_02June09.pptx]]
| |
| − | * Accelerator PQB Meeting May 19, 2009: [[media:PQB_Meeting_Ay_19May09.pdf]] [[media:PQB_Meeting_Ay_19May09.pptx]]
| |
| − | * Accelerator PQB Meeting April 28, 2009: [[media:PQB_Meeting_rtfeedback_28April09.pdf]] [[media:PQB_Meeting_rtfeedback_28April09.pptx]]
| |
| − | * Accelerator PQB Meeting April 7, 2009: [[media:PQB_Meeting_07April09.pdf]] [[media:PQB_Meeting_07April09.pptx]]
| |
| − | * Accelerator PQB Meeting March 24, 2009: [[media:PQB_Meeting_24March09.pdf]] [[media:PQB_Meeting_24March09.pptx]]
| |
| − | * Accelerator PQB Meeting March 5, 2009: [[media:PQB_Meeting_05March09.pdf]] [[media:PQB_Meeting_05March09.pptx]]
| |
| − | * Accelerator PQB Meeting February 17, 2009: [[media:PQB_Meeting_17Feb09.pdf]] [[media:PQB_Meeting_17Feb09.pptx]]
| |
| − | * Accelerator PQB Meeting November 10, 2008: [[media:PQB_Meeting_10Nov08.pdf]] [[media:PQB_Meeting_10Nov08.pptx]]
| |
| − | * Accelerator PQB Meeting September 1, 2008: [[media:PQB_Meeting_01Sep08.pdf]] [[media:PQB_Meeting_01Sep08.pptx]]
| |
| − | | |
| − | | |
| − | | |
| − | =='''B-Team Presentations'''==
| |
| − | | |
| − | * B-Team PQB Presentation October 28, 2009: [[media:B-Team_PQB_28Oct09.pdf]] [[media:B-Team_PQB_28Oct09.ppt]]
| |
| − | * B-Team PQB Presentation May 13, 2009: [[media:B-Team_PSSNoise_13May09.pdf]] [[media:B-Team_PSSNoise_13May09.ppt]]
| |
| − | * B-Team PQB Presentation April 29, 2009: [[media:B-Team_PQB_29April09.pdf]] [[media:B-Team_PQB_29April09.ppt]]
| |
| − | * B-Team PQB Presentation December 3, 2008: [[media:B-Team_PQB_03Dec08.pdf]] [[media:B-Team_PQB_03Dec08.ppt]]
| |
| − | * B-Team PQB Presentation October 9, 2008: [[media:B-Team_PQB_09Oct08.pdf]] [[media:B-Team_PQB_09Oct08.ppt]]
| |
| − | | |
| − | | |
| − | | |
| − | =='''Collaboration Presentations'''==
| |
| − | | |
| − | * QWeak Collaboration Meeting September 17, 2010: [[media:QWeak_Coll_17Sep10.pdf]] [[media:QWeak_Coll_17Sep10.pptx]]
| |
| − | * QWeak Collaboration Meeting May 24, 2010: [[media:QWeak_Coll_24May10.pdf]] [[media:QWeak_Coll_24May10.pptx]]
| |
| − | * QWeak Collaboration Meeting February 1, 2010: [[media:QWeak_Coll_01Feb10.pdf]] [[media:QWeak_Coll_01Feb10.pptx]]
| |
| − | * QWeak Collaboration Meeting February 1, 2010: [[media:QWeakInjTeam_01Feb10.pdf]] [[media:QWeakInjTeam_01Feb10.pptx]]
| |
| − | * QWeak Collaboration Meeting November 8, 2009: [[media:QWeak_Coll_08Nov09.pdf]] [[media:QWeak_Coll_08Nov09.pptx]]
| |
| − | * QWeak Collaboration Meeting November 8, 2009: [[media:QWeakInjTeam_08Nov09.pdf]] [[media:QWeakInjTeam_08Nov09.pptx]]
| |
| − | * QWeak Collaboration Meeting July 17, 2009: [[media:QWeak_Coll_17Jul09.pdf]] [[media:QWeak_Col_17Jul09.pptx]]
| |
| − | * QWeak Collaboration Meeting November 18, 2008: [[media:QWeak_Coll_18Nov08.pdf]] [[media:QWeak_Coll_18Nov08.pptx]]
| |
| − | | |
| − | | |
| − | | |
| − | =='''Other Presentations'''==
| |
| − | | |
| − | * CEBAF Ops Parity Training (August 5, 2009): [[media:parity_Ops_Training_05Aug09.pdf]] [[media:parity_Ops_Training_05Aug09.pptx]]
| |
| − | * S&T Review (July 14, 2009): [[media:S&T_Review_2009.pdf]] [[media:S&T_Review_2009.pptx]]
| |
| − | * PAVI09 (June 22, 2009): [[media:PAVI09_suleiman.pdf]] [[media:PAVI09_suleiman.ppt]]
| |
| − | | |
| − | | |
| − | | |
| − | =='''Technical Developments'''==
| |
| − | | |
| − | * QWeak Beam Requirements: [[media:Qweak.Beam.Requirements.pdf]]
| |
| − | | |
| − | | |
| − | * Discussion of technical developments in preparation for the QWeak experiment:
| |
| − | | |
| − | ''Jefferson Lab injector development for next generation parity violation experiments''.
| |
| − | J. Grames, J. Hansknect, M. Poelker, R. Suleiman, Hyperfine Interactions '''201''' (2011) 69 [[media:HyperfineInter.201.69.pdf]]
| |
| − | | |
| − | | |
| − | * Schematic of Jefferson Lab Injector setup: [[media:jlab_source_PV2.pdf]] [[media:jlab_source_PV2.pptx]]
| |
| − | | |
| − | [[file:jlab_source_PV2.jpg|center|800px|]]
| |
| − | | |
| − | | |
| − | | |
| − | ==='''Two-Wien Slow Helicity Reversal'''===
| |
| − | | |
| − | * ''Two Wien Filter Spin Flipper''. J. Grames et al., Part. Accel. Conference (PAC’11), New York, NY, (2011) [[media:tup025.pdf]]
| |
| − | | |
| − | | |
| − | | |
| − | ==='''New Helicity Board'''===
| |
| − | | |
| − | * A new helicity board was built for the QWeak experiment: [[media:NewHelBoardDesign.pdf]] [[media:NewHelBoardDesign.pptx]]
| |
| − | | |
| − | * More details can be found in the User's Guide: [[media:Helicity_Board_UserGuide.pdf]] [[media:Helicity_Board_UserGuide.docx]]
| |
| − | | |
| − | * Helicity Board Configuration Quick Reference:
| |
| − | | |
| − | {| class="wikitable"
| |
| − | |-
| |
| − | | ''' '''
| |
| − | | '''Mode'''
| |
| − | | '''T_Settle'''
| |
| − | | '''T_Stable'''
| |
| − | | '''Helicity Pattern'''
| |
| − | | '''Reporting Delay'''
| |
| − | | '''Helicity Board Frequency (Hz)'''
| |
| − | |-
| |
| − | | '''Default (30 Hz)'''
| |
| − | | Free Clock
| |
| − | | 500 µs
| |
| − | | 33330 µs
| |
| − | | Quartet
| |
| − | | 8 windows
| |
| − | | 29.56
| |
| − | |-
| |
| − | | '''5 MeV Mott'''
| |
| − | | Free Clock
| |
| − | | 500 µs
| |
| − | | 33330 µs
| |
| − | | Quartet
| |
| − | | No delay
| |
| − | | 29.56
| |
| − | |-
| |
| − | | '''Hall A Moller'''
| |
| − | | Free Clock
| |
| − | | 100 µs
| |
| − | | 16667 µs
| |
| − | | Quartet
| |
| − | | 8 windows
| |
| − | | 60.0
| |
| − | |-
| |
| − | | '''Hall A Moller'''
| |
| − | | Free Clock
| |
| − | | 100 µs
| |
| − | | 8233.35 µs
| |
| − | | Quartet
| |
| − | | 8 windows
| |
| − | | 120.0
| |
| − | |-
| |
| − | | '''PREx'''
| |
| − | | Free Clock
| |
| − | | 100 µs
| |
| − | | 4066.65 µs
| |
| − | | Octet
| |
| − | | 16 windows
| |
| − | | 240.0
| |
| − | |-
| |
| − | | '''QWeak'''
| |
| − | | Free Clock
| |
| − | | 70 µs
| |
| − | | 971.65 µs
| |
| − | | Quartet
| |
| − | | 8 windows
| |
| − | | 960.0
| |
| − | |}
| |
| − | | |
| − | | |
| − | * The pseudo-random 30-bit Shift Register
| |
| − | # '''''root''''' macro is shown here (change .txt to .C): [[media:NewPseudoRanBitGenR.txt]] [[media:NewPseudoRanBitGenR.gif]]
| |
| − | # QWeak c-code:
| |
| − | [[file:c-code.Randbit30.jpg|center|500px|]]
| |
| − | | |
| − | | |
| − | | |
| − | ==='''New Pockels Cell HV Switch'''=== | |
| − | | |
| − | * A simple and inexpensive high voltage switch for driving Pockels cells and other low capacitance loads: [[media:Pockelsswitchposter.pdf]] [[media:Pockelsswitchposter.pptx]]
| |
| − | | |
| − | * '''''root''''' macro to illustrate charge feedback (change .txt to .C): [[media:fback.txt]] [[media:fback.gif]] [[media:fbackave.gif]]
| |
| − | | |
| − | | |
| − | | |
| − | ==='''Electronic Cross-talk & Ground Loop Elimination'''===
| |
| − | | |
| − | * Electronic Cross-talk & Ground Loop Elimination in Injector: [[media:jlab_source_GroundLoop.pdf]] [[media:jlab_source_GroundLoop.pptx]]
| |
| − | | |
| − | | |
| − | | |
| − | ==='''Helicity Magnets Control Upgrade'''===
| |
| − | | |
| − | * On January 4, 2012, the power supply cards were modified to reduce the slopes during QWeak. Added 220 milli-ohm resistor in parallel with each channel of magnet and series load resistors (approx 3.8 ohms). Current through a given magnet should now be 2.5 - 3% of the total amplifier output current.
| |
| − | * Details of the plan to upgrade the controls of the Helicity Magnets (to be completed before Moller experiment): [[media:HMUpgrade_plan_27Dec11.pdf]] [[media:HMUpgrade_plan_27Dec11.pptx]]
| |
| − | | |
| − | | |
| − | | |
| − | | |
| − | -----
| |
| − | -----
| |
| − | | |
| − | | |
| − | | |
| − | ='''G0 PQB'''=
| |
| − | | |
| − | | |
| − | * ''The G0 experiment: Apparatus for parity-violating electron scattering measurements at forward and backward angles''.
| |
| − | D. Androić et al., Nucl. Instr. and Meth. A '''646''' (2011) 59 [http://dx.doi.org/10.1016/j.nima.2011.04.031] [[media:NuclInstrumMethA.646.59.pdf]]
| |
| − | | |
| − | | |
| − | =='''Lessons Learned'''==
| |
| − | | |
| − | Lessons learned for parity violation experiments at Jefferson Laboratory is an on-going series of meetings between scientists and students from the accelerator and physics division to learn from past experiences and meet new challenges in the field of parity violation experiments:
| |
| − | | |
| − | | |
| − | *Supperlattice SVT4722#2 in Gun3, January 2005:
| |
| − | | |
| − | # G0 beam studies summary to the MCC 8 AM meeting on February 1, 2005: [[media:svt4722-2_8am_050201.ppt]]
| |
| − | | |
| − | | |
| − | * Parity Beam Quality Specifications:
| |
| − | | |
| − | # Specifications for Beam Parameters for HAPPEX-II and HAPPEX-He from the HAPPEX Collaboration: [[media:HAPPEX_Beam_Requirements.ps]]
| |
| − | # Beam Parameter Specifications for the G0 Experiment from the G0 Collaboration: [[media:g0_beamspec.ps]]
| |
| − | # Preliminary Beam Specification Parameters for the Qweak Experiment from Roger Carlini: [[media:Qweak_Beam_Parameters_Prem.pdf]] [[media:Qweak_Beam_Parameters_Prem.doc]]
| |
| − | | |
| − | | |
| − | * Lessons Learned Part 1 November 18, 2004 - Meeting minutes are here: [[media:LessonsLearned_18Nov2004.pdf]] [[media:LessonsLearned_18Nov2004.docx]]
| |
| − | | |
| − | # Phase Trombone for HAPPEX-2 from Alex: [[media:Phase_Tromb_HAPPEX_2004.pdf]]
| |
| − | # Parity Lessons Learned from Chao: [[media:Parity_Lessons_Learned_chao_2004.pdf]]
| |
| − | # Parity Quality Beam Development and Experiment Timeline from Matt: [[media:Parity_Exp_Timeline_Poelker_2004.doc]]
| |
| − | # Aligning the Pockels cell - the HAPPEX procedure: [[media:Aligning_the_pockels_cell_2004.doc]]
| |
| − | # Comments about Helicity Effects for G0 and HAPPEX from Mark: [[media:pitt_parity_lessons_learned_meeting_2004.pdf]] [[media:pitt_parity_lessons_learned_meeting_2004.ppt]]
| |
| − | # Injector Setup for G0 and HAPPEX from Reza: [[media:lessons_learned_G0_and_HAPPEx_reza_2004.ppt]]
| |
| − | | |
| − | | |
| − | * Lessons Learned Part 2 December 9, 2004 - Meeting minutes are here: [[media:LessonsLearned_9Dec04.doc]]
| |
| − | | |
| − | # G0 slide regarding beam loading from Kaz: [[media:beam_loading_kaz_2004.pdf]] [[media:beam_loading_kaz_2004.ppt]]
| |
| − | # Augmented version of slides from Mark for Part 1 meeting: [[media:pitt_parity_lessons_learned_meeting_dec_09_04.pdf]] [[media:pitt_parity_lessons_learned_meeting_dec_09_04.ppt]]
| |
| − | # HAPPEX presentation from Kent: [[media:HAPPEX_LessonsLearned_kent_2004.pdf]] [[media:HAPPEX_LessonsLearned_kent_2004.ppt]]
| |
| − | # Here is Chao's report on recent beam studies: [[media:Parity_meeting_120904_chao.pdf]]
| |
| − | | |
| − | | |
| − | * Lessons Learned Part 3 January 13, 2005:
| |
| − | | |
| − | # Matt's meeting outline: [[media:Parity_Tests 1_05_matt.doc]]
| |
| − | # Chao showed injector matching results from December: [[media:Test_Result_122004_chao.pdf]]
| |
| − | # Riad's summary of Injector Studies Using Superlattice Photocathode, January 13, 2005: [[media:inj_studies_011005_riad.ppt]]
| |
| − | | |
| − | | |
| − | | |
| − | =='''G0 Backward Angle Run 2006'''==
| |
| − | | |
| − | * G0 Accelerator Planning Meeting, November 1, 2005:
| |
| − | # Introduction & Proposed Beam Specifications, Grames: [[media:G0Planning_051101_grames.ppt]]
| |
| − | # Beam Halo Considerations (from Beam Specs document), Pitt: [[media:beam_halo_pitt_051101.ppt]]
| |
| − | # Beam Halo Forward Angle Example, Pitt: [[media:g0_halo_profile_pitt_051101.pdf]]
| |
| − | # Proposed Accelerator Configuration, Freyberger: [[media:G0_prep_freyberger_051101.pdf]]
| |
| − | # Source & Beam Issues, Suleiman: [[media:G0_acc_suleiman_051101.ppt]]
| |
| − | # Injector Matching, Chao: [[media:G0_Preparation_chao_051101.pdf]]
| |
| − | # Engineering Issues, Lauze: [[media:EEConcerns_lauze_051101.doc]]
| |
| − | | |
| − | | |
| − | * Beam Parameter Specifications for G0 Backward Angle Run October 7, 2005: [[media:g0_beamspec_back_angle.pdf]]
| |
| − | | |
| − | | |
| − | * Summary of G0 Pockels Cell Studies:
| |
| − | # Presentation in January 2006: [[media:pc_install_beam_studies_jan_2006.pdf]] [[media:pc_install_beam_studies_jan_2006.ppt]]
| |
| − | # Presentation in March 2006: [[media:pc_install_beam_studies_march_2006.pdf]] [[media:pc_install_beam_studies_march_2006.ppt]]
| |
| − | # Presentation in July 2006: [[media:pc_install_beam_studies_july_2006.pdf]] [[media:pc_install_beam_studies_july_2006.ppt]]
| |
| − | # Presentation in September 2006: [[media:pc_install_beam_studies_sept_2006.pdf]] [[media:pc_install_beam_studies_sept_2006.ppt]]
| |
| − | # Presentation in January 2007: [[media:pc_install_beam_studies_jan_2007.pdf]] [[media:pc_install_beam_studies_jan_2007.ppt]]
| |
| − | | |
| − | | |
| − | | |
| − | -----
| |
| − | -----
| |
| − | | |
| − | | |
| − | | |
| − | ='''Other Presentations and Tech Notes'''=
| |
| − | * PREx Beam Requirements: [[media:PREx.Beam.Requirements.pdf]]
| |
| − | * FAQ for Injector Matching. Yu-Chiu Chao, 2008: [[media:JLabTechNote.08-040.pdf]]
| |
| − | * Collection of Notes Related to Future Work on Parity Quality Beam. Yu-Chiu Chao, 2008: [[media:JLabTechNote.08-039.pdf]]
| |
| − | * Phase Trombone for Parity Experiments. Alex Bogacz, 2007: [[media:JLabTechNote.07-039.pdf]]
| |
| − | * HAPPEx III Beam Requirements: [[media:HAPPEx.III.Beam.Requirements.pdf]]
| |
| − | * HAPPEx Collaboration Meeting May 18, 2007: [[media:happex_may_2007.pdf]] [[media:happex_may_2007.ppt]]
| |
| − | * Helicity Magnets Commissioning, MCC Talk, February 7, 2007: [[media:HelMag_Comm_MCC_talk_07Feb07.pdf]] [[media:HelMag_Comm_MCC_talk_07Feb07.pptx]]
| |
| − | * ''The G0 Experiment: Backangle Running''. Jefferson Lab Accelerator Seimnar, Riad Suleiman, Virginia Tech, November 2, 2006: [[media:G0_Acc_Seminar_suleiman_02Nov06.pdf]]
| |
| − | * G0 Adiabatic Damping, Marck Pitt: [[media:G0_AdiabaticDamping_pitt.pdf]] [[media:G0_AdiabaticDamping_pitt.pptx]]
| |
| − | * Parity Violation Experiments at CEBAF Beam Specifications, Matt Poelker, March 4, 2004: [[media:parity_table_2004.ppt]]
| |
| − | * Target Density Fluctuations and Bulk Boiling in the Hall A Cryotarget. D.S. Armstrong, B. Moffit, and R. Suleiman: [[media:JLabTechNote.03-017.pdf]]
| |
| − | * G0 Collaboration Meeting August 16, 2002: [[media:g0_collab_aug16_2002.pdf]]
| |
| − | | |
| − | | |
| − | | |
| − | -----
| |
| − | -----
| |
| − | | |
| − | | |
| − | | |
| − | ='''To-do List'''=
| |
| − | # Add Pockels Cell ringing
| |
| − | # Write the helicity board ''Review of Scientific Instruments'' paper: [[media:Helicity_RSI_draft1.pdf]] [[media:Helicity_RSI_draft1.docx]]
| |
The polar Kerr effect will be tested as a possible in-situ probe of the magnetization of the photocathode.
Wiki Logbook
Kerr - June 1, 2016 - Overview and outline
Kerr - June 2, 2016 - Discussion of Key Terms
Kerr - June 6, 2016 - Hand Magnet field measurements
Kerr - June 7, 2016 - Riad's Electromagnetic fields
Kerr - June 8, 2016 - Polarization and Saturation
Kerr - June 9, 2016 - Optics Table and first Optics measurements
Kerr - June 10, 2016 - Optics polarization measurements and Iron Alloys
Kerr - June 13, 2016 - Further Polarization
Kerr - June 14, 2016 - Mathematical explanations of MOKE
Kerr - June 15, 2016 - First Magnet experiment
Kerr - June 16, 2016 - Second Magnet experiment
Kerr - June 17, 2016 - Objectives and New Magnet Experiment
Kerr - June 20, 2016 - New Magnet and foil apparatus
Kerr - June 21, 2016 - Milestone, First Kerr measurement
Kerr - June 22, 2016 - Continued Iron foil, green light measurements
Kerr - June 23, 2016 - Pickoff, Alignment, New plans
Kerr - June 24, 2016 - New Magnet Apparatus, pick-off, hard data
Kerr - June 27, 2016 - Pick-off Analysis
Kerr - June 28, 2016 - the quest for the Absolute minimum
Kerr - June 29, 2016 - Correction to previous hypothesis
Kerr - June 30, 2016 - Multiple slope experiment
Kerr - July 1, 2016 - New Red Laser setup, further explanation of slope data
Kerr - July 5, 2016 - Extrema, Data for Joe
Kerr - July 6, 2016 - Red Left Right approach graphs and experiment
Kerr - July 7, 2016 - The Photoelastic Modulator
Kerr - July 8, 2016 - Polarized light and it's interaction with modulating devices
Kerr - July 11, 2016 - PEM, Spectrum Analyzer, and Scope setup along with foil comparisons Riad's magnet info
Kerr - July 12, 2016 - 45 degree alignment, first PEM 1f and 2f measurements.
Kerr - July 14, 2016 - Abstract, further table setup, SCU, Lock-in Amplifier setup
Kerr - July 15, 2016 - 2 Lock-in Amplifiers, Impedance levels, frequency locks
Kerr - July 16-17, 2016 - The weekend derivation <O.o>
Kerr - July 18, 2016 - Rainbow Abstract, Kerr rotation/ellipticity vs magnetic field measurements, Dotting the i's crossing the t's
Kerr - July 19, 2016 - B-field, Milestone moment, First Lock-in Amplifier measurement of Ellipticity and Theta
Kerr - July 20, 2016 - Green Test, Mirror test, root mean square test.. Red fish, blue fish, Bfield fitting test
Kerr - July 21, 2016 - Green light test, Mirror with Red light, final slides
Kerr - July 22, 2016 - 2nd Green light test, Mirror with green laser, Preparation documents for the MMF
Kerr - July 25, 2016 - Green 1, 2, and Mirror comparison
Kerr - July 26, 2016 - Puck Assembly, initial Solenoid measurements
Kerr - July 27, 2016 - Moving the system, Component settings document
Kerr - July 28, 2016 - MMF ready and set to go, Null measurements
Kerr - July 29, 2016 - First MMF measurements..... and some adjustments
Kerr - July 30, 2016 - Comparisons of first Bench to MMF Kerr signals
Kerr - August 1, 2016 - MMF measurements, smaller angle, farther distance, from foil
Kerr - August 5, 2016 - Summary of MMF measurements
