Login

DD4hep Developers Meeting

→ Europe/Zurich
zoom

zoom
Andre Sailer (CERN), Markus Frank (CERN)
Description

Please Join DD4hep developer's meeting via Zoom

DD4hep Developers Meeting
Zoom Meeting ID
68917133930
Host
Andre Sailer
Useful links
Join via phone
Zoom URL
Hide

DD4hep Meeting March 5th, 2026

Present:     Andre, Juan, Markus, Peter, Thomas

Apologies: 


Link to minutes of previous meeting

Merged PRs

  • PR1577:   fix: consistently use dimensionless G4FieldManager epsilon min/max (Wouter)

  • PR1579:   Fix warnings seen with gcc16. (Scott Snider)

  • PR1578:   Don't use exceptions to test for the presence of an attribute. (Scott Snider)

  • PR1455:   TGeoTrd1 generic surfaces (Armin Ilg)

  • PR1576:   Fix typos (Markus)

  • PR1574:   ParticleHandler: fix keepParticle logic (Andre)

  • PR1572:   replace compact.xsd location (Andre)
              ===> Gave warnings/errors in Xerces if not accessible

  • PR1573:    add backward, far det types (Derek Anderson)
              ===> ISSUE1544:Feature: additional DetTypes for backward and far detectorsenhancement

Closed PRs, closed issues and fixed problems

  • ISSUE1544:  Feature: additional DetTypes for backward and far detectors - enhancement

Pending Problems

  • ISSUE1297:  Possible to dump all available readout elements?
                          ==> Possibly a copy of unsolved ISSUE580 from Valentin about enumerating all sensitive cells.
  • ISSUE1335:   Uniform random picking of points on detector surfaces for noise studies
                           This problem is linked to #1297 and #580.
  • ISSUE1458: XML file vs TGeoStored geometry in GenFit
  • ISSUE1501: Bug/Feature: Condense duplicated particle contributions in calorimeter question
  • ISSUE1514: How to convert Geant4TrackID into MCParticle Parent ID
  • ISSUE1535: How to add new output variables in Hitsquestion (matclim -> DD4SHip)
                          ===> Debugging ongoing

New issues:

  • ISSUE1585:  How to create a constant magnetic field with Box shapequestion (quzhaoyi)
                           ===> Assigned Markus
  • ISSUE1588:  Placement of volumes using paramVolume1D.
  • ISSUE471:    Re-opened issue:  missing MCParticle for particles scattered back into the calorimeter


Pending PR:

  • PR1580:  fix: allow improved G4ParameterisedNavigation for pure 1D translation case (Wouter)
  • PR1582:  Set the fast simulation flag and adjust step length for contributions created by fast simulation (Thomas)
                     ===> Please see the extended explanation by Thomas concerning this topic in PR1582.
  • PR1583:  Give ParticleHandler functions for dropping particles more appropriate names (Thomas)
    + ISSUE1575:    Geant4UserParticleHandler::keepParticle should rather be dropParticle (Thomas)
  • PR1584:  feat: use axis-aligned bounding box to pre-filter MultipoleField calls (Wouter)
    + ISSUE1581:    Axis-aligned bounding box for MultipoleField: interest in upstreaming. enhancement (Wouter)
  • PR1586:   Fix some memory leaks (Juan)
  • PR1587:   Fields/FieldTypes: performance related cleanups (David Lange)

Round Table

Juan:.             NTR
Markus:         NTR
Peter:             NTR
Andre:            NTR

AOB

Next meeting:   March 19th, 2026

There are minutes attached to this event. Show them.
    • 15:30 → 15:50
      Around the table 20m