DD4hep Developers Meeting

Thursday 24 Feb 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, F.Gaede, T.Madlener, A.Sailer, C.Vuosalo

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) Problems with ROOT-python compatibilities (issue 842)
       ==> Waiting for Paul to provide a PR
1.4) DDG4: Isotropic gun distribution also forces uniform momentum distribution #862
       ==> Waiting for Wouter to provide PR
1.5) DD4POD: Waiting for PR from Whitney
1.6) PluginFactoryBase::make_return problem with longs (Issue 875)
1.7) 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.
1.8) Proposal to configure special material properties (Birk's constant.) (Issue 890)
        -- Waiting for user feedback (implementation).
1.9) Need to address issue 844. Warning messages are annoying.
2.0) Request to investigate issue 879. But not too urgent.

2)    Closed issues and fixed problems
----
2.1) Warnings in the simulation in the CLIC detector model.
       Related to certain generator related particle types which are not naturally known
       to Geant4. Will drop them from processing.

3) Round table
----
3.1)  Markus:          See above.
3.2)  Andre:            See 2.1
                               Removed some warnings about deprecated boost headers.
3.3)  Carl:               Warnings - see above.
3.4)  Frank:            ----
3.5)  Thomas:         ----
 

4) AOB
----
Next meeting:   10. March 2022
 

15:30 → 15:50 Around the table