- 2009-08-1Gene, S&C meeting TPC residuals with Run 8 data , in particular slides 6,7... show pp 500 from 2009
- Rosi computed beam line constrain for pp500 data in run 2009
BFC options to print tracks needed for the beam line codeCode Block root4star -b -q bfc.C'(1,10,"B2009.2,VtxSeedCalG,emcDY2,ITTF,VFPPVnoCTB,BEmcChkStat,beamLine,Corr4,OSpaceZ2,OGridLeak3D -dstout -evout " ,"/star/data03/daq/2009/Weve/sampler100X/st_W_10079002_raw_4180001.daq")' > & LogB - Tonko: document describing my procedure on how to tune the ALTRO tail suppression.
Local copy:PDF name Tuning ALTRO's Tail Cancellat....pdf - Gene: slewing in the Run 9 TPC , i.e. dependence of ]cluster time determination on cluster charge, day ~180, low lumi pp2pp
- Gene uploaded Field cage shorts in the DB, September 22, 8 pm, tpc-hn
- TPC "prompt" hits and reality check - long list of tasks to make use of them
Subject: Re: TPC "prompt" hits and reality check
Date: September 30, 2009 2:32:04 PM EDT
To: phana-hn@orion.star.bnl.gov - Carl explains:
- I believe these prompt hits have the potential to be very useful in
separating real tracks that punch out the ends of the TPC from
pile-up tracks. As such, they could be quite useful for vertex finding. - In contrast, you are asking about "really short tracks". The
matching efficiency for those is going to be quite low. Only ~20% of
the inner sector pad plane area is active. Particles that punch out
through the other ~80% of the MWPC area will leave "invisibly".
- I believe these prompt hits have the potential to be very useful in
- on the topic of charge sign discrimination
If we want charge sign to be good up to 50 GeV, then we need to keep primary track sagitta errors below 1.2 mm. This will have two additive components: systematic error in the sagitta (e.g. the TPC alignment is pervasively slightly wrong or the SpaceCharge correction is always slightly low) plus resolution of the sagitta (e.g. variance in alignment from sector-to-sector or in the SpaceCharge correction event-to-event, combined with the intrinsic resolution of the detector). If we want something like 95% confidence, then we should plan on being within 2 sigma. So:
...
SC & GL calibration progress
...
Yuri improved TpcRS so embedding is possible slides
...
Helen studied PT resolution of TPC using W electrons : [ Helen study | http://rnc.lbl.gov/wiki/index.php/High_pt_tracks_from_the_W_analysis]
...
Improvement in tracking 'CA'-seed finder, presented at S&C on August 25, 2010 by Maksym Zyzak !Picture 28.png!thumbnail!