sPHENIX discussion of software

[Dmitri Smirnov <dmixsmi AT gmail.com>]

Not sure if it is a know issue but I noticed that some properties of 
PHG4Hit are not filled in files from 
/sphenix/data/data02/sphnxpro/MDC1/sHijing_HepMC/G4Hits/data
For example, path_length, layer, row, and hit_type are filled with 
default values.


On 11/30/20 6:31 PM, pinkenburg wrote:
> Hi folks,
>
> The Geant4 processing has been ongoing and we have close to 500,000 
> events from the initial geant4 processing. The reconstruction chain 
> needs some work but is basically functional up to jets. I split it 
> into six separate steps 
> (https://github.com/sPHENIX-Collaboration/MDC1/tree/main/submit):
>
> pass1:
> Geant4 simulation of sHijing, output (G4Hits of all active detectors) 
> is written to
> /sphenix/data/data02/sphnxpro/MDC1/sHijing_HepMC/G4Hits/data
> Each file contains 100 events
>
> pass2:
> 50kHz pileup generation, output is split into 4 files
> DST_BBC_G4HIT_sHijing_0_12fm contains bbc and epd G4Hits
> DST_CALO_G4HIT_sHijing_0_12fm contains all calorimeter G4Hits
> DST_TRKR_G4HIT_sHijing_0_12fm contains tracking detector G4Hits
> DST_TRUTH_G4HIT_sHijing_0_12fm contains the truth info (and HepMC 
> records and black hole hits)
> the output is written to:
> /sphenix/data/data02/sphnxpro/MDC1/sHijing_HepMC/PileUp/data
> Each file contains about 50 events.
>
>
> pass3calo
> processing of calorimeter data from the DST_CALO_GHITS files, towers 
> (all flavors) and clusters are saved. I tried the topo clusters but it 
> ran out of memory (I killed it as it reached 40GB).
> the output is written to
> /sphenix/data/data02/sphnxpro/MDC1/sHijing_HepMC/CaloCluster/data
>
>  pass3trk:
> tracking pre-pass: tpc electron drift and clustering, silicon g4hit 
> clustering and silicon seeds from truth info using DST_TRKR_G4HIT and 
> DST_TRKR_G4HIT files. Saves clusters for the tracking
> the output is written to
> /sphenix/data/data02/sphnxpro/MDC1/sHijing_HepMC/TrkrCluster/data
>
> pass4trk:
> tracking and vertex reconstruction with ACTS (also rave vertex)
> the output goes to
> /sphenix/data/data02/sphnxpro/MDC1/sHijing_HepMC/Tracks/data
>
> pass5jet:
> jet reconstruction based on tracks (clusters need a vertex)
> the output goes to
> /sphenix/data/data02/sphnxpro/MDC1/sHijing_HepMC/Jets/data
>
>
> all files contain the data needed for the synchronization so one can 
> mix and match whatever is needed. There is a decent amount of 
> calorimeter files, tracking (and jets) are single files used to 
> establish that this works. But they can certainly be used to check if 
> they work as input for analysis.
>
> Chris
>
>
> *************************************************************
>
> Christopher H. Pinkenburg    ;    pinkenburg AT bnl.gov
>                 ;    http://www.phenix.bnl.gov/~pinkenbu
>
> Brookhaven National Laboratory    ;    phone: (631) 344-5692
> Physics Department Bldg 510 C    ;    fax:   (631) 344-3253
> Upton, NY 11973-5000
>
> *************************************************************
>
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--
Dmitri