Name: 30th Geant4 Collaboration Meeting
Start: 2025-10-20T08:00:00-04:00
End: 2025-10-24T18:00:00-04:00
Location: Charles B. Wang Center

30th Geant4 Collaboration Meeting

from Monday 20 October 2025 (08:00) to Friday 24 October 2025 (18:00)

Monday 20 October 2025

08:30 Registration

08:30 - 09:00
Room: 301
09:00 Plenary: Opening Addresses and Open Requirements
Opening Addresses and Open Requirements
09:00 - 10:30
Room: 301
Contributions

09:00 Hosts Opening Remarks

09:10 Spokes Opening Remarks

09:20 Open and new requirements - LHC and other HEP Energy Frontier experiments - Marilena Bandieramonte (University of Pittsburgh (US))

09:34 Open and new requirements - HEP intensity and cosmic frontier experiments - Krzysztof Genser (Fermi National Accelerator Laboratory (US))

09:48 Open and new requirements - Nuclear Physics experiments - Luis Gerardo Sarmiento Pico

10:02 Open and new requirements - Medical and biological science - Susanna Guatelli

10:16 Open and new requirements - Space science and engineering - Giovanni Santin Giovanni Santin
10:30 break
break
10:30 - 11:00
Room: 301
11:00 Plenary: Collaboration matters I
Collaboration matters I
11:00 - 12:30
Room: 301
Contributions

11:00 Status of the 4th general paper - Andrea Dell'Acqua (CERN)

11:30 Proposal for the Physics Lists Working Group for 2026 - Alberto Ribon (CERN)

11:50 Request to add custom physics models in G4PhysicsModelCatalog - Alberto Ribon (CERN)

12:10 Integration/Deprecation of features in the Geant4 Toolkit - Benjamin Morgan (University of Warwick (GB))
12:30 lunch break
lunch break
12:30 - 14:00
Room: 301
14:00 Plenary: Tools
Tools
14:00 - 15:30
Room: 301
Contributions

14:00 Geant4 User Support Infrastructure - Benjamin Morgan (University of Warwick (GB))

14:15 Geant4's Git Workflow Policy - Benjamin Morgan (University of Warwick (GB))

14:30 Geant4 Development/Testing Tools Update - Benjamin Morgan (University of Warwick (GB))

14:50 Maintenance topics in Core Categories for 2026 - Benjamin Morgan (University of Warwick (GB))
15:30 break
break
15:30 - 16:00
Room: 301

16:00 Plenary: Work session
Work session
16:00 - 17:30
Room: 301

17:30 Reception

17:30 - 19:30
Room: Zodiac Lobby
Tuesday 21 October 2025
09:00 Plenary: Basic, Extended and Advanced Examples
Basic, Extended and Advanced Examples
09:00 - 10:30
Room: 301
Contributions

09:00 Extended Examples: General overview and WP status - Ivana Hrivnacova (Université Paris-Saclay (FR))

09:15 New dna radial and phasespace examples - Sebastien Incerti (CNRS/IN2P3)

09:25 New dna molcounters examples - Christian Velten (Albert Einstein College of Medicine)

09:35 New dna microtrack example - Miguel Antonio Cortes-Giraldo (Universidad de Sevilla)

09:45 Recent Updates and Future Developments on Hadrontherapy and Radiobiology example - Alberto Sciuto

09:55 Advanced Examples: General overview and WP status - Francesco Romano

10:10 Update about the example on use of IAEAphsp files - Miguel Antonio Cortes-Giraldo (Universidad de Sevilla)

10:20 Minibeam dosimetric studies using the eFLASH_radiotherapy and exp_microdosimetry examples - Giuliana Milluzzo
10:30 break
break
10:30 - 11:00
Room: 301
11:00 Plenary: Geometry
Geometry
11:00 - 12:30
Room: 301
Contributions

11:00 Update on VecGeom modellers - Andrei Gheata (CERN)

11:20 ORANGE geometry construction  for Geant4 - Seth Johnson (Oak Ridge National Laboratory (US))

11:40 An update on parallel geometry initialisation - John Apostolakis (CERN)

12:00 An update on the QSS integration for magnetic field propagation - Rodrigo Castro (ETH Zurich) Rodrigo Daniel Castro (Universidad de Buenos Aires (AR))
12:30 lunch break
lunch break
12:30 - 14:00
Room: 301
14:00 Plenary: Kernel, Generic Processes and Materials
Kernel, Generic Processes and Materials
14:00 - 15:30
Room: 301
Contributions

14:00 Specialized Tracking with G4VTrackingManager - Jonas Hahnfeld (CERN & Goethe University Frankfurt)

14:25 Updates on kernel - Makoto Asai

14:45 Status of Reverse MC and usage in GRAS - Laurent Desorgher (IRA CHUV)

15:10 Status of channeling - Alexei Sytov (Universita e INFN, Ferrara (IT))
15:30 break
break
15:30 - 16:00
Room: 301
16:00 Parallel 1: Hadronic physics
Hadronic physics
16:00 - 17:30
Room: 301
Contributions

16:00 New method to make XS data library for neutrons - Andrei Berngartd Vladimir Ivantchenko (CERN)

16:20 Validation of Geant4 fragmentation models for hadrontherapy beyond carbon ions - Kristie Moore (University Wollongong, Australia)

16:40 Development of IAEA cross sections modelling isotope production from protons, for medical physics applications - Ilan Eliyauh

17:00 Determination of simulation parameter values for Light-Ion QMD - Yoshihide Sato
Vis UI Parallel: Parallel-World brain-storming
Parallel-World brain-storming
16:00 - 17:30
Room: 301
Wednesday 22 October 2025
09:00 Parallel 1: Electromagnetic Physics
Electromagnetic Physics
09:00 - 10:30
Room: 301
Contributions

09:00 Development of Geant4-DNA functionality in the physical and chemical stage for radiation protection in space - Jay Archer (University of Wollongong)

09:20 Ion transport in Geant4-DNA - Matvei Vologzhin (Tomsk State University (RU))

09:40 Monte Carlo method for the angular distribution of the e−e+ pair created in the µ-nucleus collision - Gerardo Depaola
Vis UI Parallel: Vis UI Discussion
Vis UI Discussion
09:00 - 10:30
Room: 301
Contributions

09:00 UI and Vis discussion: Introduction - John Allison

09:10 ToolsSG-GLES on OpenGL-3.2 - Guy Barrand

09:20 Transparency slider and Zoom-To-Cursor - Andrea Barresi

09:30 UI and Vis discussion - Laurent Garnier
10:30 break
break
10:30 - 11:00
Room: 301
11:00 Plenary: Electromagnetic physics
Electromagnetic physics
11:00 - 12:30
Room: 301
Contributions

11:00 EM physics status for 11.4 and beyond - Vladimir Ivantchenko (CERN)

11:20 The automatisation of the execution of the G4-Med tests - Carlo Mancini Terracciano

11:40 Status of Geant4-DNA - Sebastien Incerti (CNRS/IN2P3)

12:00 Progress for simulation of chemistry - Tran Ngoc Hoang (IN2P3)
12:30 lunch break
lunch break
12:30 - 14:00
Room: 301
14:00 Plenary: Computing performance
Computing performance
14:00 - 15:30
Room: 301
Contributions

14:00 Update and Plan of G4CPT/CI-Performance - Julia Yarba Soon Yung Jun (Fermi National Accelerator Lab. (US))

14:18 Computing Performance Results and Issues: CMS - Vladimir Ivantchenko (CERN)

14:27 Computing Performance Results and Issues: ATLAS - Marilena Bandieramonte (University of Pittsburgh (US))

14:36 Computing Performance of Geant4 Medical Applications - Miguel Antonio Cortes-Giraldo (Universidad de Sevilla)

14:54 ePIC Detector Simulation at Scale - Maxim Potekhin (Brookhaven National Laboratory (US))

15:12 Computing Performance Profiling and Geant4 simulation Activities at IBS - Kihong Park (IBS)
15:30 break
break
15:30 - 16:00
Room: 301
16:00 Plenary: Visualization
Visualization
16:00 - 17:00
Room: 301
Contributions

16:00 Vis and UI Status October 2025 - John Allison

16:10 Geometry slider and other developments - Andrea Barresi

16:20 OpenGL-3 and all that - Guy Barrand

16:30 VTK and Virtual Reality - Stewart Boogert

16:40 Vis and UI Discussion - Laurent Garnier
18:00 Banquet

18:00 - 21:00
Thursday 23 October 2025

09:00 Technical Forum

09:00 - 10:30
Room: 301

10:30 break
break
10:30 - 11:00
Room: 301

11:00 Technical Forum

11:00 - 12:30
Room: 301

12:30 lunch break
lunch break
12:30 - 14:00
Room: 301
14:00 Plenary: R&D
R&D
14:00 - 15:30
Room: 301
Contributions

14:00 AdePT - Severin Diederichs (CERN)

14:30 Celeritas - Seth Johnson (Oak Ridge National Laboratory (US))

15:00 Geant4 R&D Assessment and discussion - Marc Verderi (Centre National de la Recherche Scientifique (FR))
15:30 break
break
15:30 - 16:00
Room: 301
16:00 Plenary: Hadronic physics
Hadronic physics
16:00 - 17:30
Room: 301
Contributions

16:00 Status of Hadronic Physics - Alberto Ribon (CERN)

16:20 Developments for pre-compound model and de-excitation module - Nikita Chalyi Vladimir Ivantchenko (CERN)

16:40 Update on Fluka-Cern - Gabrielle Hugo (CERN)
Friday 24 October 2025
09:00 Plenary: Documentation and Collaboration matters II
Documentation and Collaboration matters II
09:00 - 10:30
Room: 301
Contributions

09:00 Status and perspectives of Documentation and Outreach - Alexander Howard (Imperial College (GB)) Luis Gerardo Sarmiento Pico

09:45 Discussion - Alberto Ribon (CERN)
10:30 break
break
10:30 - 11:00
Room: 301
11:00 Plenary: Further discussion and Closeout
Further discussion and Closeout
11:00 - 12:30
Room: 301
Contributions

11:00 Discussion - Alberto Ribon (CERN)

11:30 Release schedule - Gabriele Cosmo (CERN)

11:40 Announcement of 31st Geant4 Collaboration Meeting - Pedro Arce (CIEMAT - Centro de Investigaciones Energéticas Medioambientales y Tec. (ES))

11:50 Host closing remarks - Makoto Asai

12:00 Closing remarks - Alberto Ribon (CERN)
14:00 Steering Board meeting

14:00 - 17:00
Room: 301

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