sPHENIX tracking discussion

["Sakaguchi, Takao" <takao AT bnl.gov>]

Hi Tony and Christof,

 As you might know, the TPC group has regular meeting on Monday from

9:30am at 1008, and usually lasts until noon. So, we may or may not

be able to join.

Takao 

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From: sPHENIX-calibration-l <sphenix-calibration-l-bounces AT lists.bnl.gov> on behalf of Christof Roland via sPHENIX-calibration-l <sphenix-calibration-l AT lists.bnl.gov>
Sent: Sunday, May 12, 2024 10:16 AM
To: Anthony Frawley <afrawley AT fsu.edu>
Cc: 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>
Subject: Re: [Sphenix-calibration-l] [Sphenix-tracking-l] First full field complete tracking data

 

HI Tony, 

we should definitely meet on Monday. I have a one off appointment this Monday from 10 - 10:45am other than that I am free.

The seeding efficiency in the TPC seems to have a strong bending direction dependence. Understanding this is probably 

very urgent. See plot below.

Cheers

   Christof 

On 12. May 2024, at 15:44, Anthony Frawley via sPHENIX-tracking-l <sphenix-tracking-l AT lists.bnl.gov> wrote:

Hi All,

We have a few runs now with data from all tracking systems, and with the magnetic field on. There are some caveats (primarily, the TPC gain is still a bit low and the MVTX strobe is still 89 μs) but the important thing is that we have data we can use to do a complete shake-down of the reconstruction chain. So let's do that!

I would like to suggest that tracking and distortions experts get started on:

Preliminary silicon alignment - centering the barrels on the beam position.

Preliminary static TPC distortion corrections - so we can match to the silicon.

Tuning the silicon and TPC seeding.

Tuning the silicon-TPC-TPOT track matching.

Extracting the beam crossing structure in the data.

I think it is a reasonable goal for us to work through that list in the coming week.

Can we find a time on Monday morning where we can all get together and bring everyone up to speed on what exists and what still needs to be done?

Thanks

Tony

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