[Halld-offline] HDGeant4 Meeting Minutes, July 14, 2020

[Mark Ito]

Folks,

Please find the minutes here 
<https://halldweb.jlab.org/wiki/index.php/HDGeant4_Meeting,_July_14,_2020#Minutes> 
and below.

   -- Mark


    HDGeant4 Meeting, July 14, 2020, Minutes

Present: Alex Austregesilo, Sean Dobbs, Colin Gleason, Mark Ito (chair), 
Igal Jaegle, Naomi Jarvis, Richard Jones, Susan Schadmand, Simon Taylor, 
Nilanga Wickramaarachchi

There is a recording of this meeting 
<https://bluejeans.com/s/bJmzz_lD4nJ/> on the BlueJeans site. Use your 
JLab credentials to get access.


      Review of minutes from the last meeting

We went over the minutes from June 30th 
<https://halldweb.jlab.org/wiki/index.php/HDGeant4_Meeting,_June_30,_2020#Minutes>. 
Mark I. noted that Issues #93 
<https://github.com/JeffersonLab/HDGeant4/issues/93> and #111 
<https://github.com/JeffersonLab/HDGeant4/issues/111> were merged just 
before the start of the meeting.


      New release?

Mark D. explained the need for a new release of HDGeant4 and version 
sets, compatible with recon launches, that include such a release. Alex 
argued for updates of halld_recon (for the upcoming recon launch) and 
gluex_root_analysis (for PID updates). Richard requested new halld_recon 
(for REST changes) and halld_sim (for updated TOF treatment in mcsmear). 
Mark I. agreed to generate the requested version sets.


      Issues on GitHub

We went over the issues <https://github.com/JeffersonLab/HDGeant4/issues>.

  * Issue #159 Energy deposition in TOF mismatch in data & MC
    <https://github.com/JeffersonLab/HDGeant4/issues/159> can be closed
    now. Sean will take care of that.
  * Issue #111 Difference in Acceptance between G3 and G4
    <https://github.com/JeffersonLab/HDGeant4/issues/111> remains open.
    Colin will continue to look at this one.


      Future Work

  * Occasionally, HDGeant4 will complain about particle propagation not
    being able to find the normal to a surface that is about to be
    crossed, a situation that should never happen. Richard has tracked
    it down to spiraling low energy electrons at the entrance to the
    BCAL and the DIRC. He is looking into the cause and a solution.
  * Richard is thinking about putting together a website with weekly
    runs of the particle gun for a variety of single particle events, at
    various angles and energies, presented via the standard monitoring
    histograms, to track performance of HDGeant4 as the master branch
    evolves in time.


      Action Item Review

 1. Try out the bcal_nolight_heavy_rtj branch (to answer questions
    raised in Issue #111). (Colin)
 2. Track down the missing normals in the BCAL and DIRC. (Richard)

Retrieved from 
"https://halldweb.jlab.org/wiki/index.php?title=HDGeant4_Meeting,_July_14,_2020&oldid=100319"

  * This page was last modified on 14 July 2020, at 17:03.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/halld-offline/attachments/20200714/85747e03/attachment-0002.html>