Difference between revisions of "20170310-JleicIonIntegration"

Revision as of 14:08, 10 March 2017

Mar 10 2017 JLEIC Ion Integration Meeting (and Notes)

Agenda being developed

Bunch Formation Progress

• Todd has started evaluating bunch formation proposals from Jiquan
• Spreadsheet and simulation (esme) progress
• Involved cross-check between spreadsheet and esme
• slides are here

Beam Parameter Spreadsheet

• Todd continues to develop a draft beam parameters spreadsheet (pdf), including input parameters and derived parameters, and a rough start at some instability thresholds
• Note that these are explicitly beam parameters, (mostly) not accelerator hardware parameters (e.g. lattices, instrumentation, etc)
  • Will move forward with reorganizing beam/lattice parameters area in coming weeks
• 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 (Jiquan, Todd, Randy; Ed, Vasiliy)
  • 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 (AGS to RHIC transfer spin design chapter)
• Coordination with other groups
  • Beam cooling (Steve Benson et al.: Booster DC, Collider)
  • Instability/impedance (Rui Li et al.)

Reference Materials

• JLEIC Fall 2016 Collaboration Meeting (Oct 5-7 2016, InDiCo)
• JLEIC Spring 2017 Collaboration Meeting (Apr 3-5 2017, website)
• JLEIC svn repository
• Last meeting (Feb 10 2017)

Attendance

• TBD