sPHENIX tracking discussion

["Huang, Jin" <jhuang AT bnl.gov>]

Nice to see that!

> Running the TPC unpacker is a bit cumbersome, it takes ~20sec/ev

This is somewhat expected in this first prototype. For example, as chatted in 
the last meeting the unpacking currently used phi angle to channel ID 
translation, and we should directly use channel ID to phi ID translation.
https://github.com/sPHENIX-Collaboration/coresoftware/blob/master/offline/packages/tpc/TpcCombinedRawDataUnpacker.cc#L221
and it writes the debug ntuple by default
https://github.com/sPHENIX-Collaboration/coresoftware/blob/master/offline/packages/tpc/TpcCombinedRawDataUnpacker.cc#L237C5-L237C11
 

Cheers

Jin 


______________________________

Jin HUANG

Physicist, Ph.D.
Brookhaven National Laboratory
Physics Department, Bldg 510 C
Upton, NY 11973-5000

Office: 631-344-5898
Cell:   757-604-9946
______________________________

-----Original Message-----
From: sPHENIX-tracking-l <sphenix-tracking-l-bounces AT lists.bnl.gov> On Behalf 
Of Christof Roland via sPHENIX-tracking-l
Sent: Thursday, November 9, 2023 12:51 PM
To: Ross Corliss via sPHENIX-tracking-l <sphenix-tracking-l AT lists.bnl.gov>
Subject: [Sphenix-tracking-l] First look at (tpc) cosmic tracks

Hi, 

I ran the TPC reco over the cosmic events Chris provided. See slide attached.
The CASeeding seems to run fine with b-field set to 0.01T.
TPC Résiduels look a bit funky, but that was to be expected.
Running the TPC unpacker is a bit cumbersome, it takes ~20sec/ev. :-( Now 
adding the MVTX and INTT reco. 

Cheers

   Christof