[Halld-offline] HDGeant4 Meeting Minutes, March 24, 2010
marki at jlab.org
Tue Mar 24 21:50:35 EDT 2020
Please find the minutes here
HDGeant4 Meeting, March 24, 2020, Minutes
Present: Sean Dobbs, Colin Gleason, Mark Ito (chair), Igal Jaegle, Naomi
Jarvis, Richard Jones, Justin Stevens, Simon Taylor
There is a recording of this meeting <https://bluejeans.com/s/AYXCC/> on
the BlueJeans site. Use your JLab credentials to get access.
Review of minutes from the last Meeting
We went over the minutes from March 10
We focused on the long-standing issue with timing from calorimeter for
charged hadrons, in particular the two types of studies we agreed on, to
1. Richard will do particle studies to understand the differences
between G3 and G4, especially for charged hadrons in the BCAL.
2. Alex and Colin will try to isolate single particles in their
exclusive events and look at calorimeter timing response for
hadrons. Hopefully this can be done without tight cuts on the
particle of interest. Also they will try to simulate the same
reactions and repeat the studies with both G3 and G4. We will ask
Nilanga to do a similar study with his backward kaons.
There was no progress to report, but we agreed that these are still
things that we want to pursue.
Issues on GitHub
We went over some of the issues
Igal lead us through Issue 146, Discrepancy in the gamma gamma invariant
mass distribution between Geant3 and Geant4
<https://github.com/JeffersonLab/HDGeant4/issues/146>. He had noticed
differences between π^0 peak position in γγ invariant mass distributions
between G3 and G4. The issue turns out to be related to Issue 113,
Overall BCAL energy shift?
<https://github.com/JeffersonLab/HDGeant4/issues/113> that Mark Dalton
opened back in June of last year. Richard adjusted the hard-coded energy
re-scale factors for BCAL and FCAL (Pull requests #147
<https://github.com/JeffersonLab/HDGeant4/pull/147> and #148
<https://github.com/JeffersonLab/HDGeant4/pull/148>) and now Igal's
plots are in good agreement, G3-versus-G4-wise.
Igal closed both Issues 113 and 146.
* This page was last modified on 24 March 2020, at 21:47.
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