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Please Join DD4hep developer's meeting via Zoom
Present: M.Frank, P.Gessinger-Befurt, T.Madlener, A.Sailer
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)
2) Closed issues and fixed problems
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None
3) Round table
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3.1) Markus: ----
3.2) Andre: New DD4hep release 1.20
3.3) Thomas: ----
3.4) Paul: They need to attach ACTS specific information to the DetElements of DD4hep. This is on one hand very useful, but on the other hand creates a strong dependency of the entire framework on ACTS. Possible solution was found to add a map<string, double> created from additional xml elements.
4) AOB
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Next meeting: 10.February 2022