Tracker Performance Discussion #3¶

Date: 1st July 2015
Time: 16:30 UK time
Attendance: AD, CHeidt, CHunt, EO, CRogers, YPS, MU
Apologies: KL

Agenda¶

Testing tracker and reconstruction¶

“Raw” data: YPS & CHunt:¶

• Yingpeng getting set up;
• Chris Hu is running non-zero suppressed reconstruction to be able to see the full ADC distribution;
• Debug histograming code in parallel to processing the data.
• Plots required:
  • Pulse-height per channel; one histogram per channel channel;
  • Mask out “hot” channels at calibration level; add to bad channel list;
  • Hits above “2 PE” per plane;
  • Weighted mean pulse height per channel; plot per plane;
  • Generate list of dead/noisy channels;
    • E.g. dead channels observed equidistant from imagined centre line
  • Later:
    • Study timing wrt TOF

Cluster: CHunt¶

• Has looked at a standard data set.  Observation that there are twice as many two-hit clusters than 1-hit clusters.  Check with Ed Santos’ thesis and Chris Heidt.
• Make sure the “255” channels are placed in an “overflow” bin.
• Plots we need:
  • N_chan/cluster: one plot per plane;
  • N_pe per cluster (same sets of plots as for raw);
  • Cluster position per plane

Space points: MU¶

• Issues with using offline framework;
  • Agree: AD: will make consistent installation of third-party libraries. All will link against that.
• N_chan per station
• Kuno plot per station
• x/y plot for 2-cluster space point and 3-cluster space points per plane
  • Plot projections with mean and rms per plane

Pattern recognition: CHunt (with AD help)¶

• Has made individual Chi2 plots per track and per tracker;
• Road-width cut needs to be added into the reconstruction.  CHu/AD will decide how to do it.
• Plots required:
  • Plot road-width cut;
  • Plot chi2;
  • N_space_points per tracker;

Track fit: CHunt¶

• Usual set of plots (pulls, chi2, etc.)
• Loop back when other pieces are checked out.

Notes¶

Raw Data¶

• YPS getting setup - ongoing, paperwork...
• Non-zero suppressed ADC, NPE plots made - CHunt
• We shouldn't be seeing 1 or 2 NPE clusters, but we are, may be bug in recon - CHunt
• NPE distros looking better though - EO
• Processed data will be stored at IC on /vols/fets2/Processed_Data

Clusters¶

• N_chan / cluster, NPE / cluster plots made - CHunt

Spacepoints¶

• DubVsTripSPRun7157002.pdf - Top middle is US tracker, top right is DS tracker (mislabelled) - MU
• Central MAUS install at IC: /vols/fets2/software/maus/stable

Pattern Recognition¶

• Combined x and y chisq of fits fixed - CHunt

Track Fit¶

• No update

General Discussion¶

• Dead channel hunting: moved from CHunt to CHeidt
• Tracker data workshop: provisional date of this Monday, 10am, at RAL (MICE office)
• MU very concerned about not having sufficient data to perform alignment, estimated 100k - 200k straight track triggers.
  • CR - need to evidence that, or request will be refused.
  • MU to add her workings, CR to analyse.
  • MU will make case for another data run at operations meeting this evening.

Next Meeting¶

• Provisionally tomorrow at 16:30 BST

Phone Details¶

• The four digit company id: 4673 (callers from outside the UK)
• The pin number: 419357

Phone numbers:

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