Difference between revisions of "2019-01-18-LeadershipReports"

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Line 38: Line 38:
  
 
----
 
----
−
'''Accelerator R &amp; D - Y. Zhang'''<br>
+
'''Accelerator R &amp; D - Yuhong Zhang'''<br>
 +
  Previous two weeks (Jan 7 - Jan 18)
 +
  - Considered various issues and potential optimization (IR, cooling) for
 +
    100 GeV CM energy JLEIC
 +
  - Prepared FOA report (cooling simulation, bunched beam experiment
 +
    and coherent electron cooling
 +
  - Prepared talks for Hong Kong High Energy Physics Program
 +
  Next two weeks (Jan 18 - Feb 1)
 +
  - Attend the HK HEP program in the second experiment (in the second week)
 +
  - Make planning of Lijun Mao's visit
 +
  - Planed spring JLEIC collaboration meeting
 +
 
  
 
Fanglei Lin
 
Fanglei Lin
Line 45: Line 56:
 
     - Working on the storage ring cooler project
 
     - Working on the storage ring cooler project
 
     - Miscellaneous: attended the spin transparency test teleconference, attended the Pre-CDR Update meeting, attended
 
     - Miscellaneous: attended the spin transparency test teleconference, attended the Pre-CDR Update meeting, attended
−
       the JLEIC R&D meeting, attended the Innovative HE Cooling Project Status meeting, attended the Storage Ring Cooler meeting, attended JLEIC general meeting
+
       the JLEIC R&D meeting, attended the Innovative HE Cooling Project Status meeting, attended the Storage Ring Cooler
 +
      meeting, attended JLEIC general meeting
 
   Next two weeks (Jan 18 - Feb 1)
 
   Next two weeks (Jan 18 - Feb 1)
 
     - Work on the electron collider ring design with PEP-II magnets
 
     - Work on the electron collider ring design with PEP-II magnets
Line 54: Line 66:
 
Vasiliy Morozov
 
Vasiliy Morozov
 
   Previous two weeks (Jan 7 - Jan 18)
 
   Previous two weeks (Jan 7 - Jan 18)
−
     -  
+
     - Spin transparency experiment: teleconference with collaborators and
 +
      calculation of the spin response function of RHIC
 +
    - Redesign of ion interaction region for 200 GeV
 +
    - Preparation of the DoE quarterly reports
 +
    - Miscellaneous: postdoc interview, storage ring cooler, collimation
 
   Next two weeks (Jan 18 - Feb 1)
 
   Next two weeks (Jan 18 - Feb 1)
−
     -  
+
     - Completion of the DoE quarterly reports
 +
    - Ion IR and collider ring design
 +
    - pCDR update
 +
    - Spin transparency simulations
 +
 
  
 
<br>
 
<br>
 
Amy Sy
 
Amy Sy
 
  Previous two weeks (Jan 7 - Jan 18)
 
  Previous two weeks (Jan 7 - Jan 18)
−
     -  
+
     - Served on the review committee covering the primary and neutrino beamlines
 +
      as part of the DOE/SC review of LBNF/DUNE at Fermilab.
 +
    - Wrote and submitted the Beamline portion of the final report.
 +
    - Met with Zack Conway and Brahim Mustapha at ANL to discuss the
 +
    - JLEIC ion linac. Discussed polarization tracking, H- intrabeam stripping,
 +
      and stripping chicane design/optimization as paths for further design
 +
      studies. Working with Brahim to get the latest Trace3D and TRACK
 +
      inputs for the LEBT and full linac designs.
 
   Next two weeks (Jan 18 - Feb 1)
 
   Next two weeks (Jan 18 - Feb 1)
−
     -  
+
     - Continued work on getting the TRACK code running with the latest
 +
      version of the JLEIC ion linac lattice.
 +
    - First looks at IMP cooling data from December 2018 to start informing
 +
      Spring 2019 experimental goals.
 +
 
  
 
<br>
 
<br>
Line 69: Line 100:
  
 
----
 
----
−
'''Computational Physics - Y. Roblin'''<br>
+
'''Computational Physics - Yves Roblin'''<br>
 
Yves Roblin
 
Yves Roblin
 
     CEBAF
 
     CEBAF
−
 
+
      - Setting up machine for spring run
 +
      - Developing metrics for machine assessment 
 
     OTHER
 
     OTHER
 +
      - Meeting at ODU for machine learning collaboration
 +
      - Defining machine learning problem for possible collaboration
  
 
<br>
 
<br>
Line 81: Line 115:
 
       - DeCooling Rate Calculation for JLEIC with New Parameters
 
       - DeCooling Rate Calculation for JLEIC with New Parameters
 
       - BeamBeam3D
 
       - BeamBeam3D
 +
      - River helped me to repeat Sergei’s deriving of the Bjorken and Mtingwa (BM) formula for the IBS rate calculation
 +
        using the elliptical integral and to check whether we can extend Sergei’s method on a general case including
 +
        vertical dispersion and all the missing terms in the oringal BM formula. Our current conclusion is the total rate,
 +
        summation of the rates in all the three directions, can be calculated using Sergei’s formula, as long as we calculate
 +
        the eigenvalue of the I matrix, which is related to the dispersion matrix, numerically. Since the I matrix is a
 +
        symmetric real matrix, its eigenvalues can be calculated using some routine algorithm. We failed to find the explicit
 +
        formula for the rate in each individual direction. To find the formula, we need explicit expression of the
 +
        eigenvalue, which does not exist for a general matrix I. I have an idea of decompose the I matrix into three parts,
 +
        treat them separately and take the summation. But I am not positive this method gives correct or approximate answer.
 
     Next two weeks (Jan 18 - Feb 1)
 
     Next two weeks (Jan 18 - Feb 1)
−
       - Finish th core-tail model
+
       - The core-tail model for non-Gaussian IBS is in process
 
       - Finish space charge effect in friction force calculation
 
       - Finish space charge effect in friction force calculation
 
       - Continue documenting JSPEC development
 
       - Continue documenting JSPEC development
 +
      - Electron beam Space charge effect on friction force calculation is in process.
 +
      - Cooling Rate Calculation for JLEIC with New Parameters
 +
      - In the new parameter set of JLEIC, the proton beam emittance and bunch length at the collision energy have been
 +
        increased to mitigate the severe IBS effect. For the 63.3 GeV CM energy case, the collision frequency has been
 +
        changed back to 442 MHz, hence the charges per bunch has been significantly reduced, which helps to achieve a
 +
        milder IBS effect. The cooling rate and the IBS rate are calculated for both the 44.7 GeV CM energy and the 63.3
 +
        CM energy. 3.2 nC/bunch electrons provide enough cooling for both case. The challenge is still the distribution of
 +
        the cooling. As usual, we have very strong IBS effect in the horizontal direction and very strong cooling effect in
 +
        the vertical and longitudinal direction.
 +
      - BeamBeam3D
 +
      - Yu Luo send me the MAD-X lattice file for RHIC at 250 GeV. With Vascily’s help, I am able to generate the truncated
 +
        map using the PTC package in MAD-X. This lattice file does not include any RF cavity, so the 4D truncated maps are
 +
        generated. When tracking up to 1 million turns with a 2nd order map, phase space increase happens. When we perform
 +
        symplectic tracking using our codes, the phase space volume conserves in the 1 million turns. All four kinds of
 +
        generating functions have been tested and they all work as expected. When using the 3rd order truncated map in
 +
        tracking, no noticeable phase space distortion is observed in up to 1 billion turns. This may be because that this
 +
        lattice does not include the high nonlinear sections, such as the interacting region.
 
     Others
 
     Others
 
       - Write for three FOA quarterly reports
 
       - Write for three FOA quarterly reports
 +
      - Work plan in the following two weeks
 +
      - Finish the core-tail model.
 +
      - Finish space charge effect in friction force calculation.
 +
      - Continue documenting JSPEC development.
 +
  
  
 
----
 
----
−
'''Diagnostic Development - K. Jordan''' <br>
+
'''Diagnostic Development - Kevin Jordan''' <br>
−
''No report''.
+
  Previous two weeks (Jan 7 - Jan 18)
 +
    - LCLS-II; Preparing for cooldown! There were issues with big bellows leaking at the cryocan connection
 +
    - Working on isotope beamline installation & restoration
 +
    - Invited to Program committee for IBIC 2019
 +
    - Invited to Machine Advisory Committee for Canadian Light Source
 +
  Next two weeks (Jan 18 - Feb 1)
 +
    - Cooldown 2 LCLS-II cryomodules
 +
    - Take vacation to install our kinetic art with George Neil in Toronto - [https://www.torontolightfest.com/]
 +
 
 +
 
 +
 
 +
Joe Gubeli
 +
  Previous two weeks (Jan 7 - Jan 18)
 +
    - Worked with several groups in preparing the two LCLS-II CMs for cool down. With a lot of help we were able to
 +
      successfully cool them both down to 4K and collect liquid.
 +
    - Completed the design of a new x-ray insertable viewer for the Bubble experiment in the 5D line. Most of the parts have
 +
      arrived and I have submitted drawings to the MS for fabrication.
 +
    - I have received the four new chambers for the Arc 7 SLMs, they look really nice. I submitted the chamber support
 +
      drawings for one set to the MS and they are awaiting signatures. Hint-hint.
 +
    - I work with Jianxun Yan on moving a linear motor with EPICS. After getting all of the parameters both in firmware and
 +
      in EPICS correct we were able to move the motor smoothly. A similar motor on a linear slide will be used for
 +
      Radiabeam's high power-high speed wire scanner (HSHPWS) to be installed in the BSY.
 +
  Next two weeks (Jan 18 - Feb 1)
 +
    - Some time on the HWHPWS in preparing a presentation for OPS and in helping Jianxun.
 +
    - Most of the time will be spent in designing the shielding (with a movable wall and target) for the Isotope project. I
 +
      will also need to work some on thermal simulations for this project as well.
 +
    - I will also be helping with Hot Checkout of the LERF, mainly with the viewers. The video switch partially works and we
 +
      have no trigger so no Beaminizer.
 +
 
  
  
 
----
 
----
−
'''LERF - S. Benson''' <br>
+
'''LERF - Steve Benson''' <br>
−
*May 14-25
+
−
**Derived draft budget for isotope production
+
  Previous two weeks (Jan 7 - Jan 18)
−
**Went over isotope project with DOE site office staff
+
      - Interviewed one candidate for postdoctoral position
−
**Summarized labor resources needed for FOA proposal
+
      - Wrote up draft of quarterly report for FOA project
−
**Continued cleaning up the LERF for isotope visit.
+
      - Met with SRF to develop harmonic kicker purchasing strategy.
−
**Attended teleconference with DOE for isotope project.
+
      - Met with seminar committee to get new member and schedule new talks
−
**Hosted Cooling ring meetings on May 16 and 23rd and wrote up minutes
+
      - Recruited invited talks for the High Brightness Beams 2019 workshop and the FEL 2019 conference
−
**Established CCR circumference for Pre-CDR
+
      - Derived new linac layout for the cooling ERL for Pre-CDR-100.
−
**Reviewed IRMMW paper, LDRD proposals and IPAC contribution
+
      - Met with CSI personnel to derive specifications for LERF commissioning specifications
−
*May 29-June 8
+
  Next two weeks (Jan 18 - Feb 1)
−
**Arrange for collaboration with HZDR for Elbe II facility.
+
      - Submit new text for LOD and safety envelope for LERF.
−
**Submit budget for isotope project
+
      - Summarize the ERLs for EIC workshop.  
−
**Complete AWP for FOA proposal
+
      - Write up budget for Isotope quarterly report.
−
**Revise LOD to match new ASE document.
+
      - Submit quarterly reports for FOA and Isotope project.
−
**Complete question answers for LDRD proposals
+
      - Review coherent cooling literature and establish specification baseline
−
**Review a couple of AIP papers
 

Latest revision as of 15:01, 23 May 2019

Jan 7-Jan 18

Director - Todd Satogata 

  Previous two weeks ()
     - 
  Next two weeks ()
     -

Alex Bogacz 

  Previous two weeks ()
     - 
  Next two weeks ()
     -

Rui Li 

  Previous two weeks ()
     - 
  Next two weeks ()
     -

Ed Nissen 

  Previous two weeks ()
     - 
  Next two weeks ()
     -

Chris Tennant 

  Previous two weeks ()
     - 
  Next two weeks ()
     -


Accelerator R & D - Yuhong Zhang

 Previous two weeks (Jan 7 - Jan 18)
  - Considered various issues and potential optimization (IR, cooling) for 
    100 GeV CM energy JLEIC
  - Prepared FOA report (cooling simulation, bunched beam experiment
    and coherent electron cooling
  - Prepared talks for Hong Kong High Energy Physics Program
 Next two weeks (Jan 18 - Feb 1)
  - Attend the HK HEP program in the second experiment (in the second week)
  - Make planning of Lijun Mao's visit
  - Planed spring JLEIC collaboration meeting


Fanglei Lin 

 Previous two weeks (Jan 7 - Jan 18)
    - Optimizing the electron collider ring design with PEP-II magnets
    - Working on the storage ring cooler project
    - Miscellaneous: attended the spin transparency test teleconference, attended the Pre-CDR Update meeting, attended
      the JLEIC R&D meeting, attended the Innovative HE Cooling Project Status meeting, attended the Storage Ring Cooler
      meeting, attended JLEIC general meeting
 Next two weeks (Jan 18 - Feb 1)
    - Work on the electron collider ring design with PEP-II magnets
    - Work on the storage ring cooler project
    - Electron spin study using BMAD


Vasiliy Morozov 

 Previous two weeks (Jan 7 - Jan 18)
    - Spin transparency experiment: teleconference with collaborators and 
      calculation of the spin response function of RHIC
   - Redesign of ion interaction region for 200 GeV
   - Preparation of the DoE quarterly reports
   - Miscellaneous: postdoc interview, storage ring cooler, collimation
 Next two weeks (Jan 18 - Feb 1)
    - Completion of the DoE quarterly reports
    - Ion IR and collider ring design
    - pCDR update
    - Spin transparency simulations



Amy Sy 

Previous two weeks (Jan 7 - Jan 18)
    - Served on the review committee covering the primary and neutrino beamlines 
      as part of the DOE/SC review of LBNF/DUNE at Fermilab. 
    - Wrote and submitted the Beamline portion of the final report.
    - Met with Zack Conway and Brahim Mustapha at ANL to discuss the 
    - JLEIC ion linac. Discussed polarization tracking, H- intrabeam stripping, 
      and stripping chicane design/optimization as paths for further design 
      studies. Working with Brahim to get the latest Trace3D and TRACK 
      inputs for the LEBT and full linac designs.
 Next two weeks (Jan 18 - Feb 1)
    - Continued work on getting the TRACK code running with the latest 
      version of the JLEIC ion linac lattice.
    - First looks at IMP cooling data from December 2018 to start informing 
      Spring 2019 experimental goals.




Computational Physics - Yves Roblin
Yves Roblin 

   CEBAF
     - Setting up machine for spring run
     - Developing metrics for machine assessment  
   OTHER
     - Meeting at ODU for machine learning collaboration
     - Defining machine learning problem for possible collaboration


He Zhang 

   Previous two weeks (Jan 7 - Jan 18)
     - Development of JSPEC code
     - DeCooling Rate Calculation for JLEIC with New Parameters
     - BeamBeam3D
     - River helped me to repeat Sergei’s deriving of the Bjorken and Mtingwa (BM) formula for the IBS rate calculation 
       using the elliptical integral and to check whether we can extend Sergei’s method on a general case including 
       vertical dispersion and all the missing terms in the oringal BM formula. Our current conclusion is the total rate,
       summation of the rates in all the three directions, can be calculated using Sergei’s formula, as long as we calculate
       the eigenvalue of the I matrix, which is related to the dispersion matrix, numerically. Since the I matrix is a
       symmetric real matrix, its eigenvalues can be calculated using some routine algorithm. We failed to find the explicit
       formula for the rate in each individual direction. To find the formula, we need explicit expression of the
       eigenvalue, which does not exist for a general matrix I. I have an idea of decompose the I matrix into three parts,
       treat them separately and take the summation. But I am not positive this method gives correct or approximate answer. 
   Next two weeks (Jan 18 - Feb 1)
     - The core-tail model for non-Gaussian IBS is in process 
     - Finish space charge effect in friction force calculation
     - Continue documenting JSPEC development
     - Electron beam Space charge effect on friction force calculation is in process. 
     - Cooling Rate Calculation for JLEIC with New Parameters 
     - In the new parameter set of JLEIC, the proton beam emittance and bunch length at the collision energy have been
       increased to mitigate the severe IBS effect. For the 63.3 GeV CM energy case, the collision frequency has been
       changed back to 442 MHz, hence the charges per bunch has been significantly reduced, which helps to achieve a 
       milder IBS effect. The cooling rate and the IBS rate are calculated for both the 44.7 GeV CM energy and the 63.3
       CM energy. 3.2 nC/bunch electrons provide enough cooling for both case. The challenge is still the distribution of
       the cooling. As usual, we have very strong IBS effect in the horizontal direction and very strong cooling effect in
       the vertical and longitudinal direction. 
     - BeamBeam3D 
     - Yu Luo send me the MAD-X lattice file for RHIC at 250 GeV. With Vascily’s help, I am able to generate the truncated
       map using the PTC package in MAD-X. This lattice file does not include any RF cavity, so the 4D truncated maps are
       generated. When tracking up to 1 million turns with a 2nd order map, phase space increase happens. When we perform
       symplectic tracking using our codes, the phase space volume conserves in the 1 million turns. All four kinds of
       generating functions have been tested and they all work as expected. When using the 3rd order truncated map in
       tracking, no noticeable phase space distortion is observed in up to 1 billion turns. This may be because that this
       lattice does not include the high nonlinear sections, such as the interacting region. 
   Others
     - Write for three FOA quarterly reports
     - Work plan in the following two weeks 
     - Finish the core-tail model. 
     - Finish space charge effect in friction force calculation. 
     - Continue documenting JSPEC development.


Diagnostic Development - Kevin Jordan 

 Previous two weeks (Jan 7 - Jan 18)
    - LCLS-II; Preparing for cooldown! There were issues with big bellows leaking at the cryocan connection
    - Working on isotope beamline installation & restoration
    - Invited to Program committee for IBIC 2019
    - Invited to Machine Advisory Committee for Canadian Light Source
 Next two weeks (Jan 18 - Feb 1)
    - Cooldown 2 LCLS-II cryomodules
    - Take vacation to install our kinetic art with George Neil in Toronto - [1]


Joe Gubeli 

 Previous two weeks (Jan 7 - Jan 18)
    - Worked with several groups in preparing the two LCLS-II CMs for cool down. With a lot of help we were able to
      successfully cool them both down to 4K and collect liquid. 
    - Completed the design of a new x-ray insertable viewer for the Bubble experiment in the 5D line. Most of the parts have
      arrived and I have submitted drawings to the MS for fabrication.
    - I have received the four new chambers for the Arc 7 SLMs, they look really nice. I submitted the chamber support
      drawings for one set to the MS and they are awaiting signatures. Hint-hint.
    - I work with Jianxun Yan on moving a linear motor with EPICS. After getting all of the parameters both in firmware and
      in EPICS correct we were able to move the motor smoothly. A similar motor on a linear slide will be used for
      Radiabeam's high power-high speed wire scanner (HSHPWS) to be installed in the BSY.
 Next two weeks (Jan 18 - Feb 1)
    - Some time on the HWHPWS in preparing a presentation for OPS and in helping Jianxun.
    - Most of the time will be spent in designing the shielding (with a movable wall and target) for the Isotope project. I
      will also need to work some on thermal simulations for this project as well. 
    - I will also be helping with Hot Checkout of the LERF, mainly with the viewers. The video switch partially works and we
      have no trigger so no Beaminizer.


LERF - Steve Benson 

  Previous two weeks (Jan 7 - Jan 18)
     - Interviewed one candidate for postdoctoral position
     - Wrote up draft of quarterly report for FOA project
     - Met with SRF to develop harmonic kicker purchasing strategy.
     - Met with seminar committee to get new member and schedule new talks
     - Recruited invited talks for the High Brightness Beams 2019 workshop and the FEL 2019 conference
     - Derived new linac layout for the cooling ERL for Pre-CDR-100.
     - Met with CSI personnel to derive specifications for LERF commissioning specifications
  Next two weeks (Jan 18 - Feb 1)
     - Submit new text for LOD and safety envelope for LERF.
     - Summarize the ERLs for EIC workshop. 
     - Write up budget for Isotope quarterly report.
     - Submit quarterly reports for FOA and Isotope project.
     - Review coherent cooling literature and establish specification baseline
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