14:00 BST Friday 28th August

Phone details:

http://mice.iit.edu/phonebridge.html

(if it's free)

Agenda:¶

• Paper status (JB/Jaroslaw)
  • Draft note please
• PC-2015-08-28_Alignment and tolerances (Rogers)
• PC-2015-08-28_Al_windows_around_the_vacuum_region (Rogers)
• Date of next meeting Friday 4th September, 14:00 BST

Notes¶

Present

Ken Long
JB Lagrange
Chris Rogers

Paper Status

• 140 MeV/c case; JB has done some MC-based study, improved cooling performance from 7.5 % to 8.5 %
  • Value of beta functions is published
  • Rogers: No study publicly done of emittance growth vs e.g. phase advance, coil currents, beta functions
  • Rogers: Phase-advance-driven optimisation approach has not been justified
• Paper is almost finalised
  • JB draft note
• Longitudinal optics study is needed; what is the effect of running on crest? What is the effect of momentum spread?
• Optics issues
  • Value of coils and beta function looks like it drives non-linearity at 140
  • Phase advance maybe drives non-linearity at 200 and 240? Or maybe it is a second order issue
• JB agrees to distribute draft note
• Awaits Jaroslaw return from vacation to continue as JB has no linear optics code that can handle this stuff

Alignment and tolerances

• See notes
• Ken Long comments: if the tolerances look crazy, we should revisit some of the criteria; Rogers agrees

Vacuum window

• Ken Long comments: we should treat this as a part of the early design/decision process, not as a "done deal"