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    DD4hep Developers Meeting

    → Europe/Zurich
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    Andre Sailer (CERN), Markus Frank (CERN)
    Description

    Please Join DD4hep developer's meeting via Zoom

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    Present:  M.Frank, 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) 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) Proposal to configure special material properties (Birk's constant.) (Issue 890)
            -- Waiting for user feedback (implementation).
    1.6) Request to investigate issue 879. But not too urgent.

    2)    Closed issues and fixed problems
    ----
    2.1) DDG4: Isotropic gun distribution also forces uniform momentum distribution #862
           ==> Waiting for Wouter to provide PR
           ==> Solved by PR 892
    2.2) Need to address issue 844. Warning messages are annoying.
    2.3) DD4POD: Waiting for PR from Whitney.
                            Issue dropped, because EIC-Athena moved to EDM4Hep.
    2.4) Fixes to DDEve: Factory name mismatches (Issue 893, PR 894).
    2.5) Problems with ROOT-python compatibilities (issue 842)
           ==> Waiting for Paul to provide a PR
     

    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 coming up: 1.20.1
    3.3)  Carl:             NTR.

    4) AOB
    ----

    Next meeting:   24. March 2022
     

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      • 15:30 → 15:50
        Around the table 20m