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star-fwd-software-l - Re: [Star-fwd-software-l] sTGC Geometry issue

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  • From: jwebb <jwebb AT bnl.gov>
  • To: "Brandenburg, Daniel" <brandenburg.89 AT osu.edu>
  • Cc: star-fwd-software-l AT lists.bnl.gov
  • Subject: Re: [Star-fwd-software-l] sTGC Geometry issue
  • Date: Mon, 13 Feb 2023 11:43:38 -0500

Hi Daniel,

Let's chat on Tuesday afternoon. I'm free all afternoon.

Cheers,
Jason

On 2023-02-13 10:57, Brandenburg, Daniel wrote:
Hi All,

Gavin and I discovered last week that the production (pentagonal) sTGC
geometry only produces GEANT hits in only about 40% of events. I did
not catch this before, because I was not checking the absolute
efficiency (events / total with tracks) but only the efficiency with
respect to the number of MC tracks (reco / MonteCarlo). The hits have
the correct distribution – it is not that part of the detector is
missing, just that hits are lost on most events.

Jason, this is a fairly urgent issue for us – as we cannot proceed
with alignment or any of the other current tasks with this
outstanding.

Could we have a zoom meeting about this in the next few days. I am
available in the afternoon today (Monday) or Tuesday.

Best,

Daniel

Daniel Brandenburg

Assistant Professor

College of Arts and Sciences

Department of Physics

Ohio State University




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