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30th Geant4 Collaboration Meeting

20โ€“24 Oct 2025
Charles B. Wang Center
US/Eastern timezone

Session

Plenary

20 Oct 2025, 09:00
301 (Charles B. Wang Center)

301

Charles B. Wang Center

Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.

Conveners

Plenary: Opening Addresses and Open Requirements

  • Krzysztof Genser (Fermi National Accelerator Laboratory (US))
  • Alvaro Tolosa-Delgado (CERN)

Plenary: Collaboration matters I

  • Benjamin Morgan (University of Warwick (GB))
  • Alberto Ribon (CERN)

Plenary: Tools

  • Seth Johnson (Oak Ridge National Laboratory (US))
  • Benjamin Morgan (University of Warwick (GB))

Plenary: Basic, Extended and Advanced Examples

  • Francesco Romano (Universita & INFN, Bari)
  • Ivana Hrivnacova (Universitรฉ Paris-Saclay (FR))

Plenary: Geometry

  • John Apostolakis (CERN)
  • Andrei Gheata (CERN)

Plenary: Kernel, Generic Processes and Materials

  • Pedro Arce (CIEMAT - Centro de Investigaciones Energรฉticas Medioambientales y Tec. (ES))
  • Makoto Asai
  • Marc Verderi (Centre National de la Recherche Scientifique (FR))
  • Igor Semeniouk (Centre National de la Recherche Scientifique (FR))

Plenary: Electromagnetic physics

  • Fada Guan
  • Vladimir Ivantchenko (CERN)

Plenary: Computing performance

  • Soon Yung Jun (FNAL)
  • Julia Yarba

Plenary: Visualization

  • Joseph Perl
  • John Allison

Plenary: R&D

  • Seth Johnson (Oak Ridge National Laboratory (US))
  • Marc Verderi (Centre National de la Recherche Scientifique (FR))

Plenary: Hadronic physics

  • Luis Gerardo Sarmiento Pico
  • Alberto Ribon (CERN)

Plenary: Documentation and Collaboration matters II

  • Luis Gerardo Sarmiento Pico
  • Alexander Howard (Imperial College (GB))

Plenary: Further discussion and Closeout

  • Benjamin Morgan (University of Warwick (GB))
  • Alberto Ribon (CERN)

Plenary: Work session

  • There are no conveners in this block

Presentation materials

Zoom Room for Plenary Sessions
  1. 1. Hosts Opening Remarks
    20/10/2025, 09:00
  2. 2. Spokes Opening Remarks
    20/10/2025, 09:10
  3. 3. Open and new requirements - LHC and other HEP Energy Frontier experiments
    Marilena Bandieramonte (University of Pittsburgh (US))
    20/10/2025, 09:20
  4. 4. Open and new requirements - HEP intensity and cosmic frontier experiments
    Krzysztof Genser (Fermi National Accelerator Laboratory (US))
    20/10/2025, 09:34
  5. 5. Open and new requirements - Nuclear Physics experiments
    Luis Gerardo Sarmiento Pico
    20/10/2025, 09:48
  6. 6. Open and new requirements - Medical and biological science
    Susanna Guatelli
    20/10/2025, 10:02
  7. 7. Open and new requirements - Space science and engineering
    Dr Giovanni Santin, Giovanni Santin
    20/10/2025, 10:16
  8. 8. Status of the 4th general paper
    Andrea Dell'Acqua (CERN)
    20/10/2025, 11:00
  9. 58. Proposal for the Physics Lists Working Group for 2026
    Alberto Ribon (CERN)
    20/10/2025, 11:30
  10. 21. Request to add custom physics models in G4PhysicsModelCatalog
    Alberto Ribon (CERN)
    20/10/2025, 11:50
  11. 22. Integration/Deprecation of features in the Geant4 Toolkit
    Benjamin Morgan (University of Warwick (GB))
    20/10/2025, 12:10

    Over the years Geant4 has integrated a wide range of features, capabilities, and examples. Many of these are now unmaintained or otherwise obsolete. A proposal is made for future integration, deprecation and removal of features to ensure the quality of the toolkit is maintained and is sustainable over the lifetimes required by its major stakeholders.

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  12. 52. Geant4 User Support Infrastructure
    Benjamin Morgan (University of Warwick (GB))
    20/10/2025, 14:00
  13. 53. Geant4's Git Workflow Policy
    Benjamin Morgan (University of Warwick (GB))
    20/10/2025, 14:15
  14. 54. Geant4 Development/Testing Tools Update
    Benjamin Morgan (University of Warwick (GB))
    20/10/2025, 14:30
  15. 55. Maintenance topics in Core Categories for 2026
    Benjamin Morgan (University of Warwick (GB))
    20/10/2025, 14:50
  16. 36. Extended Examples: General overview and WP status
    Ivana Hrivnacova (Universitรฉ Paris-Saclay (FR))
    21/10/2025, 09:00
  17. 37. New dna radial and phasespace examples
    Sebastien Incerti (CNRS/IN2P3)
    21/10/2025, 09:15
  18. 49. New dna molcounters examples
    Christian Velten (Albert Einstein College of Medicine)
    21/10/2025, 09:25
  19. 38. New dna microtrack example
    Dr Miguel Antonio Cortes-Giraldo (Universidad de Sevilla)
    21/10/2025, 09:35
  20. 39. Recent Updates and Future Developments on Hadrontherapy and Radiobiology example
    Alberto Sciuto
    21/10/2025, 09:45
  21. 40. Advanced Examples: General overview and WP status
    Francesco Romano
    21/10/2025, 09:55
  22. 41. Update about the example on use of IAEAphsp files
    Dr Miguel Antonio Cortes-Giraldo (Universidad de Sevilla)
    21/10/2025, 10:10
  23. 42. Minibeam dosimetric studies using the eFLASH_radiotherapy and exp_microdosimetry examples
    Giuliana Milluzzo
    21/10/2025, 10:20
  24. 16. Update on VecGeom modellers
    Andrei Gheata (CERN)
    21/10/2025, 11:00
  25. 17. ORANGE geometry construction โ€จfor Geant4
    Seth Johnson (Oak Ridge National Laboratory (US))
    21/10/2025, 11:20
  26. 59. An update on parallel geometry initialisation
    John Apostolakis (CERN)
    21/10/2025, 11:40
  27. 60. An update on the QSS integration for magnetic field propagation
    Rodrigo Castro (ETH Zurich), Rodrigo Daniel Castro (Universidad de Buenos Aires (AR))
    21/10/2025, 12:00
  28. 44. Specialized Tracking with G4VTrackingManager
    Jonas Hahnfeld (CERN & Goethe University Frankfurt)
    21/10/2025, 14:00
  29. 45. Updates on kernel
    Makoto Asai
    21/10/2025, 14:25
  30. 46. Status of Reverse MC and usage in GRAS
    Dr Laurent Desorgher (IRA CHUV)
    21/10/2025, 14:45
  31. 47. Status of channeling
    Alexei Sytov (Universita e INFN, Ferrara (IT))
    21/10/2025, 15:10
  32. 29. EM physics status for 11.4 and beyond
    Prof. Vladimir Ivantchenko (CERN)
    22/10/2025, 11:00
  33. 30. The automatisation of the execution of the G4-Med tests
    Carlo Mancini Terracciano
    22/10/2025, 11:20
  34. 31. Status of Geant4-DNA
    Sebastien Incerti (CNRS/IN2P3)
    22/10/2025, 11:40
  35. 32. Progress for simulation of chemistry
    Tran Ngoc Hoang (IN2P3)
    22/10/2025, 12:00
  36. 24. Update and Plan of G4CPT/CI-Performance
    Julia Yarba, Soon Yung Jun (Fermi National Accelerator Lab. (US))
    22/10/2025, 14:00
  37. 25. Computing Performance Results and Issues: CMS
    Prof. Vladimir Ivantchenko (CERN)
    22/10/2025, 14:18
  38. 67. Computing Performance Results and Issues: ATLAS
    Marilena Bandieramonte (University of Pittsburgh (US))
    22/10/2025, 14:27
  39. 26. Computing Performance of Geant4 Medical Applications
    Dr Miguel Antonio Cortes-Giraldo (Universidad de Sevilla)
    22/10/2025, 14:36
  40. 27. ePIC Detector Simulation at Scale
    Maxim Potekhin (Brookhaven National Laboratory (US))
    22/10/2025, 14:54
  41. 28. Computing Performance Profiling and Geant4 simulation Activities at IBS
    Kihong Park (IBS)
    22/10/2025, 15:12
  42. 62. Vis and UI Status October 2025
    John Allison
    22/10/2025, 16:00
  43. 63. Geometry slider and other developments
    Andrea Barresi
    22/10/2025, 16:10
  44. 64. OpenGL-3 and all that
    Guy Barrand
    22/10/2025, 16:20
  45. 65. VTK and Virtual Reality
    Stewart Boogert
    22/10/2025, 16:30
  46. 66. Vis and UI Discussion
    Laurent Garnier
    22/10/2025, 16:40
  47. 18. AdePT
    Severin Diederichs (CERN)
    23/10/2025, 14:00
  48. 19. Celeritas
    Seth Johnson (Oak Ridge National Laboratory (US))
    23/10/2025, 14:30
  49. 20. Geant4 R&D Assessment and discussion
    Marc Verderi (Centre National de la Recherche Scientifique (FR))
    23/10/2025, 15:00
  50. 13. Status of Hadronic Physics
    Alberto Ribon (CERN)
    23/10/2025, 16:00
  51. 14. Developments for pre-compound model and de-excitation module
    Nikita Chalyi, Prof. Vladimir Ivantchenko (CERN)
    23/10/2025, 16:20
  52. 15. Update on Fluka-Cern
    Gabrielle Hugo (CERN)
    23/10/2025, 16:40
  53. 74. Status and perspectives of Documentation and Outreach
    Alexander Howard (Imperial College (GB)), Luis Gerardo Sarmiento Pico
    24/10/2025, 09:00
  54. 75. Discussion
    Alberto Ribon (CERN)
    24/10/2025, 09:45
  55. 69. Discussion
    Alberto Ribon (CERN)
    24/10/2025, 11:00
  56. 70. Release schedule
    Dr Gabriele Cosmo (CERN)
    24/10/2025, 11:30
  57. 71. Announcement of 31st Geant4 Collaboration Meeting
    Pedro Arce (CIEMAT - Centro de Investigaciones Energรฉticas Medioambientales y Tec. (ES))
    24/10/2025, 11:40
  58. 72. Host closing remarks
    Makoto Asai
    24/10/2025, 11:50
  59. 73. Closing remarks
    Alberto Ribon (CERN)
    24/10/2025, 12:00
  60. 23. Forming the Kernel Working Group
    Benjamin Morgan (University of Warwick (GB))

    In 2023, the Geant4 Evolution Task Force recommended that the collaboration consider merging several smaller working groups concerned with core or "kernel" functionality into one in order to increase coherence of roles, and to better engage developers and the collaboration. With 2026 being an election year, it is the optimum time to undertake this proposal, and an outline of the structure and...

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  61. 43. General discussion
Building timetable...