DD4hep Developers Meeting



Andre Sailer (CERN), Markus Frank (CERN)

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DD4hep Developers Meeting
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Andre Sailer
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Present:  M.Frank, T.Madlener, A.Sailer

1) Pending problems
1) ISSUE970:  Support for digitization in ddsim
                       ==> On hold, but should be closed.
2) ISSUE1103: Allow isotrope generator to throw range around specified (reference) direction: Waiting for user
3) ISSUE1173:  memory issue for large geometries
                       ===> Discussion ongoing, but is not really an issue. Geometries have to be build not with brute force.
                       ===> Was a bug in TGeo caused by large number of daughters
4)  ISSUE1199: Persist hepmc vertex status code into output
                     ===> Should we eliminate Geant4EventReaderHepMC
                     ===> Decision: Geant4EventReaderHepMC will be removed
5)  ISSUE1200: Using rotation in DDCAD to rotate around z axis 
                      ===> Should be a non-issue (?)
6) ISSUE1233: Protect against wrong primary particle mass enhancement 
7) ISSUE1235: The format of command line parameters for ddsim

2)    Closed issues and fixed problems
1) ISSUE1223: CONST properties for optical surfaces missing in DD4hep.
           Contained in release v01-28
2) ISSUE1224: Exception while executing plugin DD4hep_DetectorVolumeDump
           Contained in release v01-28
3) ISSUE1232: G4TwistedTubs have 2 constructors but DD4hep calls always the same
           Contained in release v01-28
4) PR1238 Adapt documentation for Tube(...) constructor to reality
     ISSUE1236: Mismatch between documentation and implementation of dd4hep::Tube
5) ISSUE1237: Invalid GDML generated when using boundary surfaces 
           Non-issue. Fixed in DD4hep contained in LCG 103.

3) Round table
Andre:         Added bug report page to github interface with automatic query of package versions.
                     One test systemaically failing when running with G4 units. Needs solution eventually.
Markus:      NTR
Thomas:     NTR

4) AOB

Next meeting:   March 21rst, 2024


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    • 3:30 PM 3:50 PM
      Around the table 20m