DD4hep Developers Meeting

Thursday 24 Mar 2022, 15:30 → 16:00 Europe/Zurich

zoom

Andre Sailer (CERN), Markus Frank (CERN)

Please Join DD4hep developer's meeting via Zoom

Present:  M.Frank, A.Sailer, C.Vuosalo, F.Gaede, T.Madlehner

1) Pending problems

1.1) Pending problems reported by Sang Hyun Ko:
     - Cannot setup Birk's constant as material property.
     - No analogy to G4PVParametrized. Unclear if a solution is possible.
1.2) Add GFlash parameterisation to DDG4 (issue #802)
1.3) PluginFactoryBase::make_return problem with longs (Issue 875)
1.4) ROOT issue: for G4 units the radiation/interaction length is wrong by a factor 10
       -- For CMS this problem does not show up.
       -- Should only enter AFTER simulation (Geant4 materials do not have the radiation length as input)
       -- Need to address this issue early next year.
1.5) Need to attack coverity errors.

2)    Closed issues and fixed problems
----
2.1) Proposal to configure special material properties (Birk's constant.) (Issue 890)
        -- Waiting for user feedback (implementation).
        -- Ready for testing. The current implementation allows to add any constant.
           However, how to deal with special functionality needs to be seen.
2.2) Request to investigate issue 879. (Multiple CAD shapes).
        -- Apparently Geant4 wants tessellated shapes being placed in real mother volumes and
           not assemblies. As soon as this is the case all problems vanish.

3) Round table
----
3.1)  Markus:         See above
3.2)  Andre:          -Talk requested: "DD4Hep for HSF Simulation Working Group"
                              Scheduled for early May.
                              Need to define the major topics - also with respect to ROOT7
                              To be elaborated at the next meeting.
                             -New tag released: 1.20.1
                             -EDM4hep fixes
3.3)  Carl:             Received coverity report. Some uninitialized variables to be fixed.
3.4)  Frank:          NTR. Still wants to work on GFlash.
3.5)  Thomas:       Verifying the EDM4hep module.

4) AOB
----

Next meeting:   7. April 2022
 

15:30 → 15:50 Around the table