From CASA Wiki
Jump to: navigation, search

Mar 10 2017 JLEIC Ion Integration Meeting (and Notes)

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
  • Will set up meeting to discuss RF constraints with Jiquan/Shaoheng

Beam Parameter Spreadsheet

  • Todd continues to develop a draft beam parameters spreadsheet (pdf), including input parameters and derived parameters
    • Have added rough start at some instability thresholds, verified longitudinal parameter calculations vs esme
    • Some items (particularly space charge calculation) need to be revisited to agree with Jiquan's calculations
    • 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)
    • See above update
    • Randy is assisting Todd with esme calculations; will cross-validate with BLonD (CERN python longitudinal code)
  • Booster injection (Ed)
    • Ed has reviewed literature, is resurrecting Synergia work
    • Update in two weeks?
  • Linac (Brahim; Todd, Ed, Amy)
    • Brahim is evaluating tradeoffs of H+ vs H- beam transport
    • Reported at Mar 2 R&D meeting; further report at collaboration meeting
    • Existing modeling is good enough to use for beam parameters for Booster injection
  • Booster extraction (Ed/Todd?) / Booster to Collider (Todd, Yves?) / Collider injection (Vasiliy?)
  • Coordination with other groups
    • Beam cooling (Steve Benson et al.: Booster DC, Collider)
    • Instability/impedance (Rui Li et al.)

Reference Materials


  • TBD