sPHENIX tracking discussion

[pinkenburg <pinkenburg AT bnl.gov>]

    Hi Hugo,
    
    there are local copies of G4 subsystem macros. Can I use the
    commonly installed ones or do I need special versions? And if so -
    where do I find those?
    
    Chris

On 5/9/2022 12:59 PM, Hugo Pereira Da Costa via sPHENIX-tracking-l wrote:

As discussed today, attached are Job0, JobA and JobC macros

As far as I can tell, they do not crash.

Few comments:

1/ Job A and Job C use an "empty" static distortion correction map, that is in one of my own directories:

"/phenix/u/hpereira/sphenix_workarea/g4simulations/distortion_maps_rec/distortion_corrections_empty.root"

It will have to be copied to $CALIBRATIONROOT

Chris ?

Tell me if you have any problem accessing the file.

2/ JobA and JobC keep writing the clusters and clusterCrossing assotiation in the output file. In principle this is not needed because they are already in the output of Job0.

3/ in both JobA and JobC, when turning on Distortion corrections (G4TPC::ENABLE_CORRECTIONS = true) I get *a lot* of warnings from the cluster mover of type:

/phenix/u/hpereira/sphenix/src/coresoftware/offline/packages/trackreco/PHTpcClusterMover.cc:216: Failed to find surface for cluster 158755189694660656
/phenix/u/hpereira/sphenix/src/coresoftware/offline/packages/trackreco/PHTpcClusterMover.cc:608: Error: TPC surface index not defined, skipping cluster!

even if the actual corrections are all zero.

I have no idea whether this affects our perfomances or not.

Tony: does that ring a bell ?

I'd suggest to run a first time with G4TPC::ENABLE_CORRECTIONS = false, to first see where we are with respect to the numbers shown by Tony at the last GM, then only turn it on.

4/ in the default G4_Tracking macro, when SC_CALIBMODE = true, there is a number of corrections and enlarged windows applied to the TPC-silicon matcher and the TPC-TPOT matcher. These are probably obsolete (especially since no distortion are applied per-se), and should be commented out. Tony ?

5/ even though the macros don't crash, I have not yet verified that the output actually make sense ... I'll do that next time I have a chance, running on a bunch of hits from upsilon, instead of Hijing.

Hugo

On 5/8/22 19:28, Anthony Frawley via sPHENIX-tracking-l wrote:

          Hi All,
        
          
        
        
          We will have our usual tracking software meeting at 10 am EDT
          Monday, May 9. The Zoom link is:
        
          https://fsu.zoom.us/j/98126117840
         
        
        
          Cheers
        
          Tony
        
        
          
        
        
          
        
        
          
        
        
        
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Christopher H. Pinkenburg	;    pinkenburg AT bnl.gov
				;    http://www.phenix.bnl.gov/~pinkenbu

Brookhaven National Laboratory	;    phone: (631) 344-5692
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