Difference between revisions of "20170210-JleicIonIntegration"

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==Feb 10 2017 [[JLEIC-Ion-Integration-Meetings|JLEIC Ion Integration Meeting]] ''(and Notes)'' ==
 
==Feb 10 2017 [[JLEIC-Ion-Integration-Meetings|JLEIC Ion Integration Meeting]] ''(and Notes)'' ==
  
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==== Beam Parameter Spreadsheet ====
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* Todd has developed a draft beam parameters spreadsheet, including input parameters and derived parameters
 +
* Note that these are explicitly '''beam''' parameters, not accelerator hardware parameters (e.g. lattices, instrumentation, etc)
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** Should we make the case to reorganize the parameters wiki area to separate beam and lattice parameters?
 +
* Three goals:
 +
** Ensure consistency of design beam parameters at matchpoints between JLEIC machines
 +
** Provide input to impedance and instability calculations, and broader beam simulation effort
 +
** Serve as a machine-by-machine beam parameter reference for the eventual CDR
  
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=== Last Meeting below here ===
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==== R&D Items: Ion Integration ====
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* Bunch formation
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==== Parameter Updates ====
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** Most pressing immediate need is to characterize bunch formation plan through Booster and Collider rings
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* Yuhong presented a strong cooling parameter update at the [https://casa.jlab.org/wiki/index.php/MEIC_R%26D_Meeting_%282:30_PM_Thursday%29#2017-01-12 Jan 12 2017 JLEIC R&D Meeting].
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** All beams start as coasting beams at Booster injection, so no major impact from ion source/ion linac parameters
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* This included some substantial impacts on a broad set of parameters for JLEIC.
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* Ion source (Amy) / Linac (Todd/Brahim) / LtB / Booster injection (Ed)
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* Rui is also starting to develop a work and priority plan for impedances/instabilities this calendar year.
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** Linac cost
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* Discuss and set out objectives for next few months:
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** Pulsed ion QWR/HWR gradients and RF control
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** Parameter updates at [https://casa.jlab.org/wiki/index.php/JLEIC_Baseline_Parameters the baseline parameters wiki page]
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** Booster space charge control
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** Include derived quantity spreadsheets for input to impedances/instabilities, c.f. [http://casa.jlab.org/JLEICParams/IonLinac/JLEIC-IonLinacParams.pdf ion linac parameters spreadsheet].
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** Booster injection design
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** These can be placeholders/skeletons as we start filling in things, but will identify parameters that we need to define.
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** Transverse/longitudinal emittance budget vs DC cooling
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** Polarization
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==== Ion Source R&D at LBNL ====
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* Booster extraction (Ed/Todd?) / Booster to Collider (Todd, Yves?) / Collider injection (Vasiliy?)
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* Mike was at LBNL for an 88-inch cyclotron ops review this past week
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** Bucket to bucket synchro/cogging?
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** Link to [https://conferences.lbl.gov/event/75/ review slides etc].
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** Final beam stripping
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* One item worth noting is their ECRIS ion source R&D for VENUS and MARS.
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** Polarization
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* We will briefly discuss any possible implications. Note that Amy came to us from LBL!
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* Coordination with other groups
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** Beam cooling (Steve Benson et al.: Booster DC, Collider)
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==== AOB ====
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** Instability/impedance (Rui Li et al.)
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* Last meeting we noted the following -- progress?
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** ''Yves is working with Rui and others to start developing an impedance budget'' -- progress?
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*** ''This partly uses ZAP for some calculations, but some calculations (e.g. IR region beampipe) require calculations with approximate expected geometry.''
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*** ''Todd is also concerned about BPM designs for the collider ring with long and short bunches (before and after splitting).''
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*** ''Vasiliy noted that Roman Pots in the ion collider ring at <math>\approx 10\sigma</math> may also have significant impedance impact.''
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*** ''Tim notes that an engineering team is starting to assemble to evaluate integration needs, e.g. power supply/magnets. BPM and instrumentation design may be part of this.''
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== Reference Materials ==
 
== Reference Materials ==

Revision as of 10:15, 9 February 2017

Feb 10 2017 JLEIC Ion Integration Meeting (and Notes)

Beam Parameter Spreadsheet

  • Todd has developed a draft beam parameters spreadsheet, including input parameters and derived parameters
  • Note that these are explicitly beam parameters, not accelerator hardware parameters (e.g. lattices, instrumentation, etc)
    • Should we make the case to reorganize the parameters wiki area to separate beam and lattice parameters?
  • Three goals:
    • Ensure consistency of design beam parameters at matchpoints between JLEIC machines
    • Provide input to impedance and instability calculations, and broader beam simulation effort
    • Serve as a machine-by-machine beam parameter reference for the eventual CDR

R&D Items: Ion Integration

  • Bunch formation
    • Most pressing immediate need is to characterize bunch formation plan through Booster and Collider rings
    • All beams start as coasting beams at Booster injection, so no major impact from ion source/ion linac parameters
  • Ion source (Amy) / Linac (Todd/Brahim) / LtB / Booster injection (Ed)
    • Linac cost
    • Pulsed ion QWR/HWR gradients and RF control
    • Booster space charge control
    • Booster injection design
    • Transverse/longitudinal emittance budget vs DC cooling
    • Polarization
  • Booster extraction (Ed/Todd?) / Booster to Collider (Todd, Yves?) / Collider injection (Vasiliy?)
    • Bucket to bucket synchro/cogging?
    • Final beam stripping
    • Polarization
  • Coordination with other groups
    • Beam cooling (Steve Benson et al.: Booster DC, Collider)
    • Instability/impedance (Rui Li et al.)

Reference Materials

Attendance

  • TBD
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