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30th Geant4 Collaboration Meeting
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US/Eastern
301 (Charles B. Wang Center)
301
Charles B. Wang Center
Stony Brook University
100 Circle Rd, Stony Brook, NY 11794, U.S.A.
Alberto Ribon
(CERN),
Benjamin Morgan
(University of Warwick (GB))
Description
The 30th Geant4 Collaboration Meeting is held at Stony Brook University, New York, U.S.A. from October 20th to 24th, 2025. The event is restricted to members and contributors of the Geant4 Collaboration and to guests invited by the Steering Board.
The venue of the Collaboration Meeting is the Charles B. Wang Center.
The meeting also incorporates the 65th Geant4 Technical Forum on Thursday 23rd October at 9:00 EDT (15:00 CEST).
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08:30
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09:00
Registration 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
09:00
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10:30
Plenary: Opening Addresses and Open Requirements 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Conveners: Alvaro Tolosa-Delgado (CERN), Krzysztof Genser (Fermi National Accelerator Laboratory (US))-
09:00
Hosts Opening Remarks 10m
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09:10
Spokes Opening Remarks 10m
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09:20
Open and new requirements - LHC and other HEP Energy Frontier experiments 14mSpeaker: Marilena Bandieramonte (University of Pittsburgh (US))
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09:34
Open and new requirements - HEP intensity and cosmic frontier experiments 14mSpeaker: Krzysztof Genser (Fermi National Accelerator Laboratory (US))
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09:48
Open and new requirements - Nuclear Physics experiments 14mSpeaker: Luis Gerardo Sarmiento Pico
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10:02
Open and new requirements - Medical and biological science 14mSpeaker: Susanna Guatelli
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10:16
Open and new requirements - Space science and engineering 14mSpeakers: Dr Giovanni Santin, Giovanni Santin
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09:00
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10:30
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11:00
break 30m 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
11:00
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12:30
Plenary: Collaboration matters I 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Conveners: Alberto Ribon (CERN), Benjamin Morgan (University of Warwick (GB))- 11:00
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11:30
Proposal for the Physics Lists Working Group for 2026 20mSpeaker: Alberto Ribon (CERN)
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11:50
Request to add custom physics models in G4PhysicsModelCatalog 20mSpeaker: Alberto Ribon (CERN)
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12:10
Integration/Deprecation of features in the Geant4 Toolkit 10m
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.
Speaker: Benjamin Morgan (University of Warwick (GB))
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12:30
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14:00
lunch break 1h 30m 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
14:00
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15:30
Plenary: Tools 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Conveners: Benjamin Morgan (University of Warwick (GB)), Seth Johnson (Oak Ridge National Laboratory (US))-
14:00
Geant4 User Support Infrastructure 15mSpeaker: Benjamin Morgan (University of Warwick (GB))
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14:15
Geant4's Git Workflow Policy 15mSpeaker: Benjamin Morgan (University of Warwick (GB))
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14:30
Geant4 Development/Testing Tools Update 20mSpeaker: Benjamin Morgan (University of Warwick (GB))
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14:50
Maintenance topics in Core Categories for 2026 20mSpeaker: Benjamin Morgan (University of Warwick (GB))
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14:00
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15:30
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16:00
break 30m 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
16:00
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17:30
Plenary: Work session 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
17:30
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19:30
Reception Zodiac Lobby (Charles Wang Center)
Zodiac Lobby
Charles Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.
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08:30
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09:00
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09:00
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10:30
Plenary: Basic, Extended and Advanced Examples 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Conveners: Francesco Romano (Universita & INFN, Bari), Ivana Hrivnacova (Université Paris-Saclay (FR))-
09:00
Extended Examples: General overview and WP status 15mSpeaker: Ivana Hrivnacova (Université Paris-Saclay (FR))
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09:15
New dna radial and phasespace examples 10mSpeaker: Sebastien Incerti (CNRS/IN2P3)
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09:25
New dna molcounters examples 10mSpeaker: Christian Velten (Albert Einstein College of Medicine)
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09:35
New dna microtrack example 10mSpeaker: Dr Miguel Antonio Cortes-Giraldo (Universidad de Sevilla)
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09:45
Recent Updates and Future Developments on Hadrontherapy and Radiobiology example 10mSpeaker: Alberto Sciuto
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09:55
Advanced Examples: General overview and WP status 15mSpeaker: Francesco Romano
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10:10
Update about the example on use of IAEAphsp files 10mSpeaker: Dr Miguel Antonio Cortes-Giraldo (Universidad de Sevilla)
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10:20
Minibeam dosimetric studies using the eFLASH_radiotherapy and exp_microdosimetry examples 10mSpeaker: Giuliana Milluzzo
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09:00
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break 30m 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
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12:30
Plenary: Geometry 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Conveners: Andrei Gheata (CERN), John Apostolakis (CERN)- 11:00
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11:20
ORANGE geometry construction for Geant4 20mSpeaker: Seth Johnson (Oak Ridge National Laboratory (US))
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11:40
An update on parallel geometry initialisation 20mSpeaker: John Apostolakis (CERN)
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12:00
An update on the QSS integration for magnetic field propagation 15mSpeakers: Rodrigo Castro (ETH Zurich), Rodrigo Daniel Castro (Universidad de Buenos Aires (AR))
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12:30
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14:00
lunch break 1h 30m 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
14:00
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15:30
Plenary: Kernel, Generic Processes and Materials 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Conveners: Igor Semeniouk (Centre National de la Recherche Scientifique (FR)), Makoto Asai, Marc Verderi (Centre National de la Recherche Scientifique (FR)), Pedro Arce (CIEMAT - Centro de Investigaciones Energéticas Medioambientales y Tec. (ES))-
14:00
Specialized Tracking with G4VTrackingManager 25mSpeaker: Jonas Hahnfeld (CERN & Goethe University Frankfurt)
- 14:25
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14:45
Status of Reverse MC and usage in GRAS 25mSpeaker: Dr Laurent Desorgher (IRA CHUV)
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15:10
Status of channeling 20mSpeaker: Alexei Sytov (Universita e INFN, Ferrara (IT))
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14:00
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15:30
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16:00
break 30m 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
16:00
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17:30
Parallel 1: Hadronic physics 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Conveners: Alberto Ribon (CERN), Luis Gerardo Sarmiento Pico-
16:00
New method to make XS data library for neutrons 20mSpeakers: Andrei Berngartd, Prof. Vladimir Ivantchenko (CERN)
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16:20
Validation of Geant4 fragmentation models for hadrontherapy beyond carbon ions 20mSpeaker: Kristie Moore (University Wollongong, Australia)
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16:40
Development of IAEA cross sections modelling isotope production from protons, for medical physics applications 20mSpeaker: Ilan Eliyauh
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17:00
Determination of simulation parameter values for Light-Ion QMD 20mSpeaker: Yoshihide Sato
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16:00
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17:30
Vis UI Parallel: Parallel-World brain-storming 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Vis UI Discussion
Conveners: Dr Gabriele Cosmo (CERN), Makoto Asai
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09:00
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10:30
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09:00
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10:30
Parallel 1: Electromagnetic Physics 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Conveners: Sebastien Incerti (CNRS/IN2P3), Tran Hoang (CNRS, France)-
09:00
Development of Geant4-DNA functionality in the physical and chemical stage for radiation protection in space 20mSpeaker: Jay Archer (University of Wollongong)
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09:20
Ion transport in Geant4-DNA 20mSpeaker: Matvei Vologzhin (Tomsk State University (RU))
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09:40
Monte Carlo method for the angular distribution of the e−e+ pair created in the µ-nucleus collision 20mSpeaker: Gerardo Depaola
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10:30
Vis UI Parallel: Vis UI Discussion 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Vis UI Discussion
Conveners: John Allison, Joseph Perl-
09:00
UI and Vis discussion: Introduction 10m
See Vis UI Discussion document - https://docs.google.com/document/d/12iSwYCVTOHq9HztWxLrV0d_2l389UY3dUTqDAQO5cAQ/edit?usp=sharing
Speaker: John Allison - 09:10
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09:20
Transparency slider and Zoom-To-Cursor 10mSpeaker: Andrea Barresi
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09:30
UI and Vis discussion 1h
Discussion
Speaker: Laurent Garnier
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09:00
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break 30m 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
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12:30
Plenary: Electromagnetic physics 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Conveners: Fada Guan, Prof. Vladimir Ivantchenko (CERN)-
11:00
EM physics status for 11.4 and beyond 20mSpeaker: Prof. Vladimir Ivantchenko (CERN)
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11:20
The automatisation of the execution of the G4-Med tests 20mSpeaker: Carlo Mancini Terracciano
- 11:40
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12:00
Progress for simulation of chemistry 20mSpeaker: Tran Ngoc Hoang (IN2P3)
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11:00
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12:30
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14:00
lunch break 1h 30m 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
14:00
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15:30
Plenary: Computing performance 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Conveners: Julia Yarba, Soon Yung Jun (FNAL)-
14:00
Update and Plan of G4CPT/CI-Performance 18mSpeakers: Julia Yarba, Soon Yung Jun (Fermi National Accelerator Lab. (US))
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14:18
Computing Performance Results and Issues: CMS 9mSpeaker: Prof. Vladimir Ivantchenko (CERN)
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14:27
Computing Performance Results and Issues: ATLAS 9mSpeaker: Marilena Bandieramonte (University of Pittsburgh (US))
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14:36
Computing Performance of Geant4 Medical Applications 18mSpeaker: Dr Miguel Antonio Cortes-Giraldo (Universidad de Sevilla)
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14:54
ePIC Detector Simulation at Scale 18mSpeaker: Maxim Potekhin (Brookhaven National Laboratory (US))
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15:12
Computing Performance Profiling and Geant4 simulation Activities at IBS 18mSpeaker: Kihong Park (IBS)
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14:00
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15:30
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16:00
break 30m 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
16:00
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17:00
Plenary: Visualization 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Conveners: John Allison, Joseph Perl-
16:00
Vis and UI Status October 2025 10mSpeaker: John Allison
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16:10
Geometry slider and other developments 10mSpeaker: Andrea Barresi
- 16:20
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16:30
VTK and Virtual Reality 10mSpeaker: Stewart Boogert
- 16:40
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18:00
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21:00
Banquet
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09:00
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10:30
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09:00
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10:30
Technical Forum 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Session details of Technical Forum are given in the dedicated Technical Forum Indico page.
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10:30
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11:00
break 30m 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
11:00
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12:30
Technical Forum 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Session details of Technical Forum are given in the dedicated Technical Forum Indico page.
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12:30
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14:00
lunch break 1h 30m 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
14:00
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15:30
Plenary: R&D 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Conveners: Marc Verderi (Centre National de la Recherche Scientifique (FR)), Seth Johnson (Oak Ridge National Laboratory (US))- 14:00
- 14:30
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15:00
Geant4 R&D Assessment and discussion 30mSpeaker: Marc Verderi (Centre National de la Recherche Scientifique (FR))
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15:30
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16:00
break 30m 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
16:00
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17:30
Plenary: Hadronic physics 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Conveners: Alberto Ribon (CERN), Luis Gerardo Sarmiento Pico- 16:00
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16:20
Developments for pre-compound model and de-excitation module 20mSpeakers: Nikita Chalyi, Prof. Vladimir Ivantchenko (CERN)
- 16:40
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10:30
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10:30
Plenary: Documentation and Collaboration matters II 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Conveners: Alexander Howard (Imperial College (GB)), Luis Gerardo Sarmiento Pico-
09:00
Status and perspectives of Documentation and Outreach 45mSpeakers: Alexander Howard (Imperial College (GB)), Luis Gerardo Sarmiento Pico
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09:45
Discussion 45mSpeaker: Alberto Ribon (CERN)
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09:00
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11:00
break 30m 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
11:00
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12:30
Plenary: Further discussion and Closeout 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Conveners: Alberto Ribon (CERN), Benjamin Morgan (University of Warwick (GB))-
11:00
Discussion 30mSpeaker: Alberto Ribon (CERN)
- 11:30
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11:40
Announcement of 31st Geant4 Collaboration Meeting 10mSpeaker: Pedro Arce (CIEMAT - Centro de Investigaciones Energéticas Medioambientales y Tec. (ES))
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11:50
Host closing remarks 10mSpeaker: Makoto Asai
- 12:00
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11:00
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14:00
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17:00
Steering Board meeting 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.
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09:00
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10:30
