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  • From: "Pereira Da Costa, Hugo Denis Antonio" <hugo.pereira-da-costa AT lanl.gov>
  • To: "sphenix-calibration-l AT lists.bnl.gov" <sphenix-calibration-l AT lists.bnl.gov>, sPHENIX-tracking-l <sphenix-tracking-l-bounces AT lists.bnl.gov>
  • Cc: Hugo Pereira Da Costa <hugo.pereira.da.costa AT gmail.com>
  • Subject: [Sphenix-calibration-l] Follow up on direct laser reconstruction/generation
  • Date: Tue, 12 Mar 2024 17:41:29 +0000


All, especially Christof, Charles

- Charles: thanks for the suggestion about changing the lasers orientation !
that is why I was not getting any hits. I only tested with theta = 0, which
is along the beam, and with lasers at R=60 , that is, between R2 and R3. All
G4Hits were generated between regions, and without distortions, were all
falling into the dead are. Hence no hits. Using the angles you suggested, I
do see G4Hits, hits, even clusters, using the standard clustering, using the
latest code from git.

See figure attached (generated with my own evaluator)

- Christof: in case this helps, I have put the macro I use as well as the
modified version of G4_TrkrSimulation.C that selects only one laser angle, at
"/phenix/u/hpereira/for_christof"

Hugo

Attachment: Screenshot_20240312_113517.png
Description: Screenshot_20240312_113517.png




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