Star-tpc-l mailing list

[Richard Witt <witt.richard AT gmail.com>]

Present: Alexei, Jim, Grazyna, Frank, Gene, Flemming, Yuri, Daniel, and myself


== Hardware
        — things look good 
        — some small decreased in drift velocity
                — added more methane
        — timing of Au+Au run still under some discussion (meeting yesterday)
                — sPHENIX requested 6x6 bunches
                — discussion of parameters took place (do we support crossing 
angle or no crossing angle)
                — Gene says we need conditions like we will use in regular 
running 
        — field cage currents should be checked (however weather has been dry 
so no strong concern)
        

== Electronics
        — Flemming showed summary of Run 24 p+p iTPC running 
                — see Flemming’s Drupal Blog
        — RDO outages reach approximately 15% in iTPC
        — 4 RDOs in TPX are probably unrepairable (similar number in iTPC) 
for various reasons
        — probably need a dedicated meeting after the run to discuss what can 
be repaired
    

== Software
        — Run 22 p+p 500 SC
                — 245 out of 247 fills have been calibrated (last 2 don’t 
have enough runs, used neighboring fills)
                — waiting on new TPC alignment  
                — analyst in lfsupc group has been tweaking distortion 
corrections based on mass^2 between p and pbar to correct 
                — will ask analysts to join future TPC meeting to discuss

        — TFG24d
                — going forward with dE/dx calibration with new alignment and 
now producing on HLT farm
                — will calibrate, with help of Rice BTOF group, dE/dx
                — once returns from Germany, will produce fixed target data 
using test production based on available disk space
                        — Frank has questions about status of answers to pull 
request questions
                        — in particular, what is the effect of including hit 
sharing in the new TFG release
                        — Yuri has code that is running to check effect of 
change in hit errors
                                — hits with flag 2 (deconvoluted hits from 
Tonko) have their errors increased by factor of 4
                                — explains why test production has about 10% 
more K0_S than P24ia
                                — increasing hit errors for deconvoluted hits 
increases efficiency in K0 reconstruction
                                — running jobs provide track by track 
comparisons and other tests
                                — Gene can recompile the code base and run 
tests that should take only a few hours


== AOB
        — Nothing new discussed this week

Best Regards,
  Richard

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