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Rogers, Chris, 17 November 2015 12:56
2015-11-17 memo-physics-report¶
2015/03¶
- Third draft run plan document is at http://micewww.pp.rl.ac.uk/projects/analysis/documents
- Lots of uncertainty around hardware, so we shall see what happens (ops meeting later)
- FC alignment:-
- Rogers has looked at settings, ~ 50 A solenoid mode looks okay (or 70 A flip mode); still not finalised
- Sophie is back from vacation and will start looking through "reconstruction" i.e. can we get good enough resolutions with TOF cut?
- Q789 switched off for TOF0 alignment
- nb this is a short run but should be done for TOF0 alignment
- SSU switched on with ECE:-
- Uncertainty around the hardware
- VB looking at trim coil currents
- Nb: needs some modelling of iron here - feeding in Jo Langlands (Sheffield grad student) to this effort + field mapping
- Straight tracks
- Staring at MuScat paper, looks like they were systematics dominated (errors ~ 50k muons)
- Working on the statistics analysis (can we get 50 k muons within momentum cut and radial cut at the absorber? what should the cuts be?)
3/4 December Review¶
- Step IV
- asked Ao to push through a new round of optics studies - he was distracted by PASI last week
- will then need to process at least one setting with full reconstruction
- Demonstration of ionisation cooling
- Baseline and baseline w/o M1 is at a reasonable point, using RMS emittance analysis
- CR is looking at generic phase space volume analyses (not RMS emittance); to fight the "do nothing" crowd
- Jaroslaw is looking at using third FC as a matching element (no news yet, Rogers pestering)
January optics Review¶
- v1 agenda handed to KL, v2 attached (some familiar names)
- await revised ToR - but we need to start the writing up process now to have a hope to converge by January; agenda becomes the latex skeleton
- I am scared by the timescale
Step IV¶
- Precision measurement of emittance
- VB working through the "TOF tracks" analysis (maybe she is in the meeting?), turning it into a reconstruction routine
- Awaits tracker reconstruction/geometry fixes
- Tracker alignment
- Discussion with Melissa/Jason/Durga/Tony Millington
- John Palin et al aligned trackers to monuments on the end face of SSU/SSD
- Tony Millington et al surveyed monuments on the outer rim of SSU/SSD
- end-face monuments are now obscured
- Jason Tarrant is in contact with John Palin to recover any (raw) survey data he may have, hand off to Tony
- Tony Millington will make a remedial survey of SSU on Wednesday this week when the diffuser goes in
- remedial survey on SSD may not be possible due to interference from cables and pipes
Cooling demo¶
- No update on the paper, chasing on Jaroslaw "cooling demo with focus coil" optics
- No update on the tolerances study, will chase Alan
Updated by Rogers, Chris about 8 years ago · 2 revisions