h1. 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:

No update on dE/dx

Done:

DS Tracks (1005 - tweaks)

US Tracks (-dE/dx)

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

To Do:

Jan:

*Plot xy positions of hits in Tracker station 2 vs 4 in two diff colours same plot of x against y.

*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.

Final tweaks to DS tracks and efficiency

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

       US

       DS

(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??