Diagnostics¶

Can we do another analysis/diagnostics meeting today, 14:00. I added Ao
into the mix for the Cerenkov data we have taken in the last couple of
weeks. Norman, I can let you in if you need me to (I am back at RAL).

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

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

I will post agenda, slides to:

http://micewww.pp.rl.ac.uk/projects/analysis/wiki/PC-2015-10-08a

• Tracker-to-tracker alignment - Melissa/Chris Hunt/John Nugent
  • Straight tracks data this weekend
• Tracker alignment to field - Chris Rogers/Sophie
• Cut-based beam selection vs 2015/01 data - Tanaz/Scott Wilbur
• Ckov momentum scan - Ao Liu, Durga Rajaram
• Full PID vs 2015/01 data - Celeste
• PID detector alignment - Francois

Cheers,
Chris

Notes¶

Norman McCubbin
Tanaz Mohayai
Francois
Durga Rajaram
Francois Drielsma
Sophie Middleton
John Nugent
Chris Rogers
Celeste Pidcott

Tracker-to-tracker alignment
Chris Hunt

• Looking at different runs; looking at data taken on Monday 28th September; can we measure remnant fields?
• Trying to get final set of numbers; ROOT is segfaulting for no reason, so no official new results
• Very few issues with the data
• 200 MeV/c straight muon run, 300 MeV/c straight muon run, diffuser in straight muon run; no diffuser studies on Monday 28th

John Nugent

• Pulled low emittance high momentum run from 28th September, attempting to process it with millipede
• Durga will email John URL of the reconstructed data set
• Pushing through millipede, will get numbers

Tracker to field

• No update

PID selection
Tanaz Mohayai

• Two interesting features from the TOF plots and TOF vs momentum plots - "bridge particles" between electron and muon peak
• Working through the electron plot
• But working shifts and COOL2015
• Suggest looking at data from last night
• Very high p particles...

Ckov

• Never got to sufficient momentum that pions turn on the ckov
• Select electrons muons pions using TOF, looked at PE yield, below threshold it is consistent with noise 270 MeV/c turn-on in pions
  • Hole in the 200 MeV/c momentum range
• Not seen muon plot
• Is it consistent with historical data?
• What's the turn-on for muons
• Ckov data last night; needs analysis; did not go to the high momentum region

Global recon

• Still waiting on track matching

PID detector alignment

• Q789 off data