[Halld-offline] Minutes of the October 9 HDGeant4 Meeting

[Mark Ito]

Simulation Fans,

Please find the minutes below and by clicking here 
<https://halldweb.jlab.org/wiki/index.php/HDGeant4_Meeting,_October_9,_2018#Minutes>.

   -- Mark

____________________________


  Minutes, HDGeant4 Meeting, October 9, 2018

Present:

  * *FSU: * Sean Dobbs
  * *JLab: * Mark Ito (chair), Justin Stevens, Beni Zihlmann

We reviewed the following webpages:

 1. Review of minutes from the September 11 HDGeant4 Meeting
    <https://halldweb.jlab.org/wiki/index.php/HDGeant4_Meeting,_September_11,_2018#Minutes>
 2. Discussion at the September 11 Offline Software Meeting
    <https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_September_18,_2018#Review_of_the_HDGeant4_Meeting_from_September_11>
 3. Issues on GitHub <https://github.com/JeffersonLab/HDGeant4/issues>

  * The geometry comparison described in (1) was done by Thomas Britton
    and Mark. The XML files from HDDS and from CCDB were identical.
  * The mystery of recovery of FDC hits in the transition from
    wire-based to time-based tracking reported by Beni in (2) remains.
    HDG3 sees the recovery, HDG4 does not. The mystery of events with no
    FDC hits visible when scanning HDG4 events also remains.
  * We need to check that studies we use going forward have Simon
    Taylor's tracking changes from Pull Request #21
    <https://github.com/JeffersonLab/halld_recon/pull/21>, merged on
    September 11.
  * Sean submitted Issue #67
    <https://github.com/JeffersonLab/HDGeant4/issues/67> on the photon
    energy scale. Richard Jones will look into this using a single
    photon gun.
  * We will talk to Thomas about further studies to uncover the root
    source of the loss of FDC hits described in Issue #66
    <https://github.com/JeffersonLab/HDGeant4/issues/66>. The goal is to
    describe the problems at a stage before tracking.

Retrieved from 
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  * This page was last modified on 9 October 2018, at 16:54.

-- 
Mark Ito, marki at jlab.org, (757)269-5295

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