sPHENIX tracking discussion

[David Stewart <0ds.johnny AT gmail.com>]

Hi Tony, all, 

I'm driving to Chicago over my kids spring break to see a prospective university with my daughter today, so I'll unfortunately miss the meetings today and tomorrow. However, I'm working on trying to find why the silicon tracking seeder is missing several obvious tracks. For example, if I plot the clusters from the TNtuples from the G4sPHENIX_g4svtxeval.root macro, then I get the green dots from the  ntp_g4cluster::gx,gy points and the red circles from the ntp_cluster::x,y points. I have interpreted this as there being the green dots in the G4 simulation, and the seeding failing to find the extra obvious track, and therefore a way to debug the PHCSeeder.cc module. However, if I put a printout statement at Line 291 in PHCASeeder.cc for the cluster positions in the Boost tree and plot them, then I only get the green dots associated with the tracks that the seeder found. Perhaps I am driving the code wrong somehow (possible -- Joe already asked me to set scan_for_embed to false in the Trkr_Eval.C module), but this may hint at the missing tracks in the efficiency. I'll look into this more on Monday to chase down the details, but any insight would be appreciated. Thanks!

Dave

On Wed, Mar 27, 2024 at 11:29 PM Anthony Frawley via sPHENIX-tracking-l <sphenix-tracking-l AT lists.bnl.gov> wrote:

Hi All,

Reminder that we will meet Thursday at 10 am ET to discuss the practical implementation of the laser flash data into the readout/reconstruction chain.

https://fsu.zoom.us/j/91902088638

Best regards

Tony

---

From: Anthony Frawley <afrawley AT fsu.edu>
Sent: Monday, March 25, 2024 11:16 PM
To: sphenix-tracking-l AT lists.bnl.gov <sphenix-tracking-l AT lists.bnl.gov>; sphenix-calibration-l AT lists.bnl.gov <sphenix-calibration-l AT lists.bnl.gov>
Cc: Anthony Frawley <afrawley AT fsu.edu>
Subject: Tracking related working session Thursday mornings at 10 am - 12 noon

 

Hi All,

The results of Joe's poll showed that the best availability for our new weekly tracking-related working sessions is on Thursday morning, from 10:30 to 12 noon.

Let's plan on expanding that a bit, with meetings on Thursday from 10 am to noon or 12:30, with the expectation that some people will join a bit later, and some will leave a bit earlier.

We agreed in the tracking meeting last Friday that we would meet this Thursday morning to discuss the practical implementation of the laser flash data into the readout/reconstruction chain. So let's make that the topic of the first working session, and meet at 10:00 am Thursday.

We can use the tracking zoom for that:

https://fsu.zoom.us/j/91902088638

Best regards

Tony

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--

David Stewart

Postdoctoral Fellow | Department of Physics, Wayne State University