Diagnostics¶

There will be an analysis/diagnostics meeting Thursday 26th November, 14:00.

We will be in one of the usual meeting rooms in the Atlas building, using phone:

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

• Optics review
• Tracker resolution and efficiency - Tracker Group
  • Field map of SSU for 7th October run
• Tracker-to-tracker alignment - Melissa/Chris Hunt/John Nugent
  • Tracker Survey
• Tracker alignment to field - Chris Rogers/Sophie
• Cut-based beam selection vs 2015/01 data - Tanaz/Scott Wilbur
• Ckov momentum scan - Ao, Durga
• Full PID vs 2015/01 data - Celeste
• PID detector alignment - Francois
• Detector Efficiencies - Jan/Francois
• Paper: High precision measurement of emittance - Chris Hunt/Victoria
• Date of Next Meeting
  • 7th January Optics review prep special?
  • 14/15 January Optics Review

Notes¶

Scott Wilbur
Tanaz Mohayai
John Nugent
Chris Hunt
Sophie Middleton
Adam Dobbs if he returns
Paul Kyberd
Durga Rajaram
Paul Soler
Melissa Uchida

Tracker resolution and efficiency

• Scripts and tools to produce plots exist; waiting for fix in MC
• Paul K is looking in MC
• What level of efficiency?
  • Difference between duplets and triplets
  • Not just looking at "hits anywhere in the plane"
  • Some planes are less efficient
  • Concentrating on space point efficiency at the moment
  • In the end need to show efficiency is consistent at different levels and is flat across the aperture
  • Do we care about TOF efficiency?
    • Durga: the efficiency in TOF is 90 % in the middle and 70 % on the edge
    • Space point efficiency: number of slab hits that make a space point
    • Global efficiency: ROGERS to chase Francois
• Resolution?
  • Compare TOF with tracker
  • ROGERS to upload field maps

Tracker-to-tracker alignment;
Chris H:

• Merge branch of Chris Hunt tagged for merging into next release; should have no more issues with data reconstruction
• Mysterious momentum flip comes from tying Kalman back into globals, did not get pushed
• Chris Hunt would love to do this afternoon
• Alignment workshop on Monday; update to be reported by email from Chris H, due to scheduling conflict
  John N:
• Internal tracker alignment and tracker to tracker alignment from data and MC
• Chris Heidt: reported a fix but no time
• Melissa Uchida: comments about updated geometry using latest survey measurements
  Melissa:
• Proper survey measurements has been related back to the survey and put into MAUS
• Needs to be written up as a MICE note

Cut-based beam selection

• Paul Soler: use ratio of TOF to e peak?
• Rogers: survey data is available as MICE notes
• Durga: MAUS should get correct geometries
• 3 additional peaks have DS off
• May be that using D2 as a PID variable is not so interesting; better to just fit to the peak

TOF0 alignment

• Barely anything in TKU; not enough data; need decay solenoid