[Halld-offline] HDGeant4 Meeting Minutes, December 15, 2020

[Mark Ito]

Folks,

Please find the minutes here 
<https://halldweb.jlab.org/wiki/index.php/HDGeant4_Meeting,_December_15,_2020#Minutes> 
and below.

   -- Mark

_______________________________________


    HDGeant4 Meeting, December 15, 2020, Minutes

Present: Alex Austregesilo, Tegan Beattie, Sean Dobbs, Colin Gleason, 
Mark Ito (chair), Igal Jaegle, Naomi Jarvis, Richard Jones, Zisis 
Papandreou, Simon Taylor, Jon Zarling, Beni Zihlmann

There is a recording of this meeting 
<https://bluejeans.com/s/q72zOCXZeeh/> on the BlueJeans site. Use your 
JLab credentials to get access.


      Review of minutes from the last meeting

We went over the minutes from December 1st. Zisis made a correction to 
the version of the minutes sent out via email: Tegan and Colleen 
Henschel were the ones that wrote the Geant4-based detailed simulation 
of the BCAL.


      Issues on GitHub

Issue #167: G4 exceptions for certain run numbers 
<https://github.com/JeffersonLab/HDGeant4/issues/167>: Colin is working 
through reviving his study. Tegan is on contact with Colin to get going 
himself.

Issue #179: Proton timing in the BCAL 
<https://github.com/JeffersonLab/HDGeant4/issues/179>: Sean posted a new 
issue, looking deeper into the details of the BCAL simulation of 
incident hadrons. He led us through the issue. Some points from the 
discussion:

  * He looked at abundance of the various secondary particles in the
    simulation for hdgeant, HADR1 and HADR4, and HDGeant4.
  * He looked at the energy spectra for particular particle types:
    neutrons, protons, and C12 for each of the three models.
  * Zisis asked about the physics list. Richard replied that it was a
    standard list with tweaks from Maurizio Ungaro of Hall B and from a
    BNL experiment.


      Technical Topics

  * Igal has reported a problem with doing a make after a make clean in
    HDGeant4. Mark is look at this.
  * In response to questions and discussion, Mark will build a version
    of no-light-heavy branch of HDGeant4 at JLab for the (i)farm. He
    will also send out instructions on how that is done.


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