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 a third FC as a matching element; he didn't find a match at 4 T only at 2 T

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