20170922-JleicIonIntegration

Sep 22 2017 JLEIC Ion Integration Meeting

pCDR Planning

• Presented pCDR planning slides at Sep 13-15 AAC meeting
  • Slides here (pptx)
• Bob McKeown also showed the current JLEIC strategy and organization
  • Todd and Rik are leading documentation and pCDR efforts
  • The pCDR is not just a technical design report
• A portion of the pCDR is consistent technical design of all accelerator segments
• The most current (very drafty) pCDR outline is located here (Dropbox link)

Near Term Action Items

• By Tue Oct 3
  • Identify and prioritize remaining work needed on accelerator segments to deliver relevant consistent pCDR draft sections by April/May 2018
  • Will review and collate at next integration/pCDR meeting (Fri Oct 6)
• By Tue Oct 31
  • Draft initial machine segment documentation
  • Includes upload of relevant (even draft) best present accelerator segment lattice files to svn
    • Document should be consistent with, and include references to, svn lattice file version(s)
  • Zip file of "template" (Todd's Booster tech note) located here
  • Iterations, if needed, at Fri Oct 20 integration/pCDR meeting

pCDR Accelerator Segment Needs

• Polarized Ion Source (Amy)
• Heavy Ion Source (Amy)
• Ion RFQs/Linac (Brahim)
• Linac to Booster Transfer Line (?)
• Ion Booster (Ed/Todd)
• Booster to Collider Transfer Line (?)
• Ion Collider Ring (Vasiliy)
• CEBAF (Jiquan)
• CEBAF to Collider Transfer Line (Yves)
• Electron Collider Ring (Fanglei)
• Low Energy Cooler (Yuhong)
• High Energy Cooler (Steve)

pCDR Accelerator Segment items from Engineering (Tim)

• Ion Sources and Linac
  • Status: Limited to basic element list and cost information from Jan, 2015. Basic origin defined.
  • Would like to get models of elements to develop basic CAD layout in NX.
  • Space and tunnel/vault sizing
  • Summarize power requirements and cooling needs – parameterization.
• Linac to Booster Transfer Line
  • Status: Undefined.
  • Get lattice file
  • Develop layout
  • Define start point and connection point to Ion Booster Ring
  • Size and layout of tunnel to connect Ion LINAC tunnel/vault to Ion Booster Tunnel
  • Diagnostics???
  • Other parameterization???
• Ion Booster
  • Status: Origin defined. Based on TAMU 1.2m model dipole.
  • Development of tunnel
  • Transition transfer lines in and out
  • Kicker
  • Diagnostics???
  • Abort/dump system???
  • Other parameterization???
• Booster to Collider Transfer Line
  • Undefined.
• Ion Collider Ring
  • Status: Origin defined – at IP. Basic tunnel layout complete – need to update with overall SF magnet model.
  • Updated lattice file and layout – look at % filled.
  • Resize tunnel to accommodate RF Cavity spacing from floor/wall
  • Feasibility / sizing of SF magnets (11.4m model of dual 4m dipole/quad combo in a single cryostat)
  • Diagnostics???
  • Abort/dump system???
  • Other parameterization???
  • RF HPA system basic model/layout – basic assessment of routing waveguides from surface to tunnel
• CEBAF
  • Status: Origin of CEBAF is the Origin of all JLEIC Site Layout
  • Need to assess CEBAF Reliability/Availability and its impact on JLEIC Reliability/Availability
  • Need definition of operational scenario, time to fill ECR, top off rate, etc.
• CEBAF to Collider Transfer Line
  • Status: Very old and outdated lattice file from Yves based on PEP-II LER Dipoles – note that it does not line up with position of the Electron Collider Ring as it sits now
  • Get updated lattice file
  • Develop layout
  • Based off CEBAF Origin – needs start point and connection point to Electron Collider Ring – how does it enter Electron Collider Ring (ideally from above, but latest thought is from below so as not to affect Electron Collider Ring to Ion Collider Ring stacked spacing)
  • Size and layout of tunnel to connect CEBAF to Collider Tunnel
  • Diagnostics???
  • Other parameterization???
• Electron Collider Ring
  • Status: Origin defined – IP. Basic tunnel layout complete. Model of PEP-II RF Cavity ready for updated lattice. Assessment of “Moving Magnets” for synchronization done – can be adapted to new lattice and magnets. Vacuum elements are PEP-II style.
  • Updated lattice file and layout – look at % fill (or free space for additional, not yet defined items)
  • Resize tunnel to accommodate PEP-II RF Cavity spacing from floor/wall
  • Add synchronization chicanes to layout
  • Feasibility / sizing of new magnets
  • Diagnostics???
  • Abort/dump system???
  • Other parameterization???
  • RF HPA system basic model/layout – basic assessment of routing waveguides from surface to tunnel
• Low Energy Cooler
• High Energy Cooler
• Interaction Region
  • Status: Region layout. 1st cut at IR FFQs and SD magnets – need to assess and iterate. Current model of IR beam pipe – ready for Impedance modeling. Magnet coils modeled.
  • Iterate on magnet models
  • Look at additional magnets for details – skew quads, correctors, anti-solenoids
  • Baseline definition for supports, cryostats, etc.
  • Magnet interactions
• Engineering Topics
  • Superferric Magnets
  • Normal Magnets
  • SRF
  • Crab Cavities
  • Normal Conducting RF
  • Feedback systems
  • Diagnostics
  • Controls