[Halld-offline] HDGeant4 Meeting Minutes, July 2, 2019

[Mark Ito]

People,

Please find the minutes here 
<https://halldweb.jlab.org/wiki/index.php/HDGeant4_Meeting,_July_2,_2019#Minutes> 
and below.

   -- Mark

____


  HDGeant4 Meeting, July 2, 2019, Minutes

Present:

  * *CMU: * Naomi Jarvis
  * *JLab: * Shankar Adhikari, Alex Austregesilo, Thomas Britton, Stuart
    Fegan, Mark Ito (chair), Simon Taylor
  * *UConn: * Richard Jones

There is a recording of this meeting <https://bluejeans.com/s/X2u5O/> 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 18 
<https://halldweb.jlab.org/wiki/index.php/HDGeant4_Meeting,_June_18,_2019#Minutes> 
to remind ourselves where we left off.


      Issues on GitHub

We reviewed the open issues 
<https://github.com/JeffersonLab/HDGeant4/issues>.

  * Overall BCAL energy shift? #113
    <https://github.com/JeffersonLab/HDGeant4/issues/113>. Mark Dalton
    re-did his study, this time providing details of the dependence of
    the energy response on energy and angle. Richard noticed that the
    results have differences from those he presented back in March
    <https://docs.google.com/presentation/d/1IDw4LD2GhBpzam9E1V8LRBcb49Kb1V3GMTWR2Inw2V8/edit#slide=id.p>.
    We discussed possible sources of the difference: target launch
    position, control.in differences, and the use of different run
    numbers were mentioned. In principle, it should be possible to track
    down the cause of the differences.
  * Difference in Acceptance between G3 and G4 #111
    <https://github.com/JeffersonLab/HDGeant4/issues/111> Thomas will
    re-raise the issue with Colin Gleason when Colin returns from vacation.
  * G4Exception crash after Curve length mis-match #109
    <https://github.com/JeffersonLab/HDGeant4/issues/109>. Naomi has
    succeeded in tracking down two bggen events that cause crashed in
    hdgeant4. We tried, in real time, to run hdgeant4 on one of them
    with the random number seeds she provided. No crash, but the input
    seeds reported on standard output did not match those input. Richard
    will look into this.
      o The connection of these events with previously reported crashes
        is not certain. Naomi will post them in as new issues.
  * Calorimeter timing mismatch between g3 and g4 #93
    <https://github.com/JeffersonLab/HDGeant4/issues/93> Alex has
    started work on repeating his study.

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  * This page was last modified on 2 July 2019, at 17:44.

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