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30th Geant4 Collaboration Meeting

20–24 Oct 2025
Charles B. Wang Center
US/Eastern timezone

Contribution List

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  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 (Université 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 
for 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. 11. New method to make XS data library for neutrons
    Andrei Berngartd, Prof. Vladimir Ivantchenko (CERN)
    21/10/2025, 16:00
  33. 9. Validation of Geant4 fragmentation models for hadrontherapy beyond carbon ions
    Kristie Moore (University Wollongong, Australia)
    21/10/2025, 16:20
  34. 10. Development of IAEA cross sections modelling isotope production from protons, for medical physics applications
    Ilan Eliyauh
    21/10/2025, 16:40
  35. 12. Determination of simulation parameter values for Light-Ion QMD
    Yoshihide Sato
    21/10/2025, 17:00
  36. 33. Development of Geant4-DNA functionality in the physical and chemical stage for radiation protection in space
    Jay Archer (University of Wollongong)
    22/10/2025, 09:00
  37. 50. UI and Vis discussion: Introduction
    John Allison
    22/10/2025, 09:00

    See Vis UI Discussion document - https://docs.google.com/document/d/12iSwYCVTOHq9HztWxLrV0d_2l389UY3dUTqDAQO5cAQ/edit?usp=sharing

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  38. 57. ToolsSG-GLES on OpenGL-3.2
    Guy Barrand
    22/10/2025, 09:10
  39. 34. Ion transport in Geant4-DNA
    Matvei Vologzhin (Tomsk State University (RU))
    22/10/2025, 09:20
  40. 68. Transparency slider and Zoom-To-Cursor
    Andrea Barresi
    22/10/2025, 09:20
  41. 51. UI and Vis discussion
    Laurent Garnier
    22/10/2025, 09:30

    Discussion

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  42. 35. Monte Carlo method for the angular distribution of the e−e+ pair created in the µ-nucleus collision
    Gerardo Depaola
    22/10/2025, 09:40
  43. 29. EM physics status for 11.4 and beyond
    Prof. Vladimir Ivantchenko (CERN)
    22/10/2025, 11:00
  44. 30. The automatisation of the execution of the G4-Med tests
    Carlo Mancini Terracciano
    22/10/2025, 11:20
  45. 31. Status of Geant4-DNA
    Sebastien Incerti (CNRS/IN2P3)
    22/10/2025, 11:40
  46. 32. Progress for simulation of chemistry
    Tran Ngoc Hoang (IN2P3)
    22/10/2025, 12:00
  47. 24. Update and Plan of G4CPT/CI-Performance
    Julia Yarba, Soon Yung Jun (Fermi National Accelerator Lab. (US))
    22/10/2025, 14:00
  48. 25. Computing Performance Results and Issues: CMS
    Prof. Vladimir Ivantchenko (CERN)
    22/10/2025, 14:18
  49. 67. Computing Performance Results and Issues: ATLAS
    Marilena Bandieramonte (University of Pittsburgh (US))
    22/10/2025, 14:27
  50. 26. Computing Performance of Geant4 Medical Applications
    Dr Miguel Antonio Cortes-Giraldo (Universidad de Sevilla)
    22/10/2025, 14:36
  51. 27. ePIC Detector Simulation at Scale
    Maxim Potekhin (Brookhaven National Laboratory (US))
    22/10/2025, 14:54
  52. 28. Computing Performance Profiling and Geant4 simulation Activities at IBS
    Kihong Park (IBS)
    22/10/2025, 15:12
  53. 62. Vis and UI Status October 2025
    John Allison
    22/10/2025, 16:00
  54. 63. Geometry slider and other developments
    Andrea Barresi
    22/10/2025, 16:10
  55. 64. OpenGL-3 and all that
    Guy Barrand
    22/10/2025, 16:20
  56. 65. VTK and Virtual Reality
    Stewart Boogert
    22/10/2025, 16:30
  57. 66. Vis and UI Discussion
    Laurent Garnier
    22/10/2025, 16:40
  58. 18. AdePT
    Severin Diederichs (CERN)
    23/10/2025, 14:00
  59. 19. Celeritas
    Seth Johnson (Oak Ridge National Laboratory (US))
    23/10/2025, 14:30
  60. 20. Geant4 R&D Assessment and discussion
    Marc Verderi (Centre National de la Recherche Scientifique (FR))
    23/10/2025, 15:00
  61. 13. Status of Hadronic Physics
    Alberto Ribon (CERN)
    23/10/2025, 16:00
  62. 14. Developments for pre-compound model and de-excitation module
    Nikita Chalyi, Prof. Vladimir Ivantchenko (CERN)
    23/10/2025, 16:20
  63. 15. Update on Fluka-Cern
    Gabrielle Hugo (CERN)
    23/10/2025, 16:40
  64. 74. Status and perspectives of Documentation and Outreach
    Alexander Howard (Imperial College (GB)), Luis Gerardo Sarmiento Pico
    24/10/2025, 09:00
  65. 75. Discussion
    Alberto Ribon (CERN)
    24/10/2025, 09:45
  66. 69. Discussion
    Alberto Ribon (CERN)
    24/10/2025, 11:00
  67. 70. Release schedule
    Dr Gabriele Cosmo (CERN)
    24/10/2025, 11:30
  68. 71. Announcement of 31st Geant4 Collaboration Meeting
    Pedro Arce (CIEMAT - Centro de Investigaciones Energéticas Medioambientales y Tec. (ES))
    24/10/2025, 11:40
  69. 72. Host closing remarks
    Makoto Asai
    24/10/2025, 11:50
  70. 73. Closing remarks
    Alberto Ribon (CERN)
    24/10/2025, 12:00
  71. 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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  72. 43. General discussion
  73. 56. ToolsSG-GLES on OpenGL-3.2
    Guy Barrand
  74. 61. Vis and UI Status October 2025
    John Allison
  75. 48. Vis driver features
    John Allison