DD4hep Developers Meeting

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Andre Sailer (CERN), Markus Frank (CERN)
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Please Join DD4hep developer's meeting via Zoom

DD4hep Developers Meeting
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68917133930
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Andre Sailer
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DD4hep Meeting November 21th, 2024

Present:  A.Sailer, M.Frank

Apologies:


Link to minutes of previous meeting

Merged PRs

  • PR       1342:  Some more test dependency management, add SignalHandler to ddsim (Andre)
  • PR       1347:  Remove override warnings from DDG4 compilation (Markus)
  • PR       1348:  make inline definition of insertion operator of DCH_info class (Alvaro)
  • PR       1349:  PythonPlugin: replace deprecated/removed Eval with Exec (Andre)

Pending Problems

  • ISSUE1199: Persist hepmc vertex status code into output
                          ==> Should we eliminate Geant4EventReaderHepMC
                          ==> Decision: Geant4EventReaderHepMC will be removed
  • ISSUE1285:  Memory Consumption of Sensitive Detectors
                          ==> Should be handled as illustrated in PR1288. Intrinsic problem of the Geant4VolumeManager;
  • ISSUE1296:  DetectorImp::endDocument() called twice for some geometries?
                          ==> Unsure if it is a problem wrongly configuring multiple xml inputs.
  • ISSUE1297:  Possible to dump all available readout elements?
                         ==> Possibly a copy of unsolved ISSUE580 from Valentin about enumerating all sensitive cells.
  • ISSUE1319: Problem with regexSensitiveDetector and volume IDs
                         ==> Interesting use case for reg-ex sensitive detectors
                                 having a VolumeMgr equivalent.
  • ISSUE1320:  Replacing a Handle<Segmentation> which contains a MultiSegmentation with the underlying Segmentation
                         ===> Unclear what he really means. Questions after re-reading, calls like:
    Handle<SomeSegmentation> seg = multisegmentation->subSegmentation(cellID);
or
Segmentation* seg = multisegmentation->subSegmentation(cellID);
  • ISSUE 1335: Uniform random picking of points on detector surfaces for noise studies
                This problem is linked to #1297 and #580 .
  • ISSUE 1343: want to get a parameter into ddsim SDAction at run time

    Pending:
  • PR1240:     Add multithreading support to ddsim
  • PR1304:     SurfaceManager: lazily construct surface maps on demand (Leonhard Reichenbach)
  • PR1314:     Cylinder segment surface (Armin Ilg)

Closed issues and fixed problems

  • ISSUE 1340: Not saving contributions for calorimeter hits
                          ==> explanation sorted out by Andre
  • ISSUE 1344: Two sensitive surfaces in a one module. How to debug?
                          ==> explanation sorted out by Andre
  • ISSUE 1345: problem to simulate Bhabha events:
                          FATAL +++ Stable particle (PDG: 11 ) with daughters! check your MC record, adapt particle.tbl file...
                          ==> explanation sorted out by Andre
  • ISSUE 1346:  MCParticle parent and daughter values not matching up.
                          ==> misunderstanding sorted out by Andre

Round Table

Andre:     NTR
Markus:  NTR

AOB

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Next meeting:   November 21th, 2024

There are minutes attached to this event. Show them.