11-06-2015¶

Jan Efficiency updates:
- Latest efficiency looks pretty good
- Huge improvement since using tracker plane 4 rather than 2. What does this mean as the distance shouldn't make any difference????
- Remove TOF2 and KL run again comparing stations 2 and 4 now that possible energy loss material is removed. If no change then its dE/dx if change then there is a distance issue, which must be fixed.
- Expecting improvements again following Kalman changes next week.

Melissa:
dE/dx a little scuppered by trunk broken... but moving on

Done:
DS Tracks (100% - tweaks)
US Tracks (-dE/dx)

PDFs for all TOFS, KL, EMR, Trackers in large stats of e mu and pions

To Do:

• Send efficiency equations with descriptions of each point
• Plot xy positions of hits in Tracker station 2 vs 4 in two diff colours same plot of x against y.
• Plot x positions of MC hits-recon hits against local recon error
• Plot y positions of MC hits-recon hits against local recon error (in all these cases they should never be outside the error.
• Ensure Tracker trackpoint that acts as in initial track matches well to MC. Also check Pt on that trackpoint is good and tighten to see whether sample has better efficiency.
• Remove TOF2 and KL run again comparing stations 2 and 4 now that possible energy loss material is removed. If no change then its dE/dx if change then there is a distance issue, which must be fixed.
• Use RK to plot from tracker stations 1 to 4.
• Throughgoing track efficiency
• Be sure US tracks are ready for dE/dx/
• start thinking about track fitting

Celeste:
Finish large stats pion and positron pdfs for all detectors
For Throughgoing - Still need these
US (500 mu, positron & pion each in samples)
DS (500 mu, positron & pion each in samples) will need to rerun if Francois EMR variables go in.
(efficiency purity based on them)

Melissa:
dE/dx
talk with subdetectors and determin alignment plan and beam
errors for Celeste

Future:
We need to be ready for throughgoing alignment:
We may need track fitting for the throughgoing and this may become urgent
determin fiducial angle cut for the above
Melissa talk with subdetectors and determin alignment plan and beam settings
All to agree thoughgoing alignment
Simulate PRY end plate??