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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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Registration 301
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Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
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))-
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Hosts Opening Remarks
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Spokes Opening Remarks
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Open and new requirements - LHC and other HEP Energy Frontier experimentsSpeaker: Marilena Bandieramonte (University of Pittsburgh (US))
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Open and new requirements - HEP intensity and cosmic frontier experimentsSpeaker: Krzysztof Genser (Fermi National Accelerator Laboratory (US))
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Open and new requirements - Nuclear Physics experimentsSpeaker: Luis Gerardo Sarmiento Pico
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Open and new requirements - Medical and biological scienceSpeaker: Susanna Guatelli
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Open and new requirements - Space science and engineeringSpeakers: Dr Giovanni Santin, Giovanni Santin
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10:30
break 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
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))- 8
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Proposal for the Physics Lists Working Group for 2026Speaker: Alberto Ribon (CERN)
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Request to add custom physics models in G4PhysicsModelCatalogSpeaker: Alberto Ribon (CERN)
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Integration/Deprecation of features in the Geant4 Toolkit
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
lunch break 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
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))-
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Geant4 User Support InfrastructureSpeaker: Benjamin Morgan (University of Warwick (GB))
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Geant4's Git Workflow PolicySpeaker: Benjamin Morgan (University of Warwick (GB))
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Geant4 Development/Testing Tools UpdateSpeaker: Benjamin Morgan (University of Warwick (GB))
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Maintenance topics in Core Categories for 2026Speaker: Benjamin Morgan (University of Warwick (GB))
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15:30
break 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
Plenary: Work session 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
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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Plenary: Basic, Extended and Advanced Examples 301
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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))-
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Extended Examples: General overview and WP statusSpeaker: Ivana Hrivnacova (Université Paris-Saclay (FR))
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New dna radial and phasespace examplesSpeaker: Sebastien Incerti (CNRS/IN2P3)
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New dna molcounters examplesSpeaker: Christian Velten (Albert Einstein College of Medicine)
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New dna microtrack exampleSpeaker: Dr Miguel Antonio Cortes-Giraldo (Universidad de Sevilla)
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Recent Updates and Future Developments on Hadrontherapy and Radiobiology exampleSpeaker: Alberto Sciuto
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Advanced Examples: General overview and WP statusSpeaker: Francesco Romano
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Update about the example on use of IAEAphsp filesSpeaker: Dr Miguel Antonio Cortes-Giraldo (Universidad de Sevilla)
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Minibeam dosimetric studies using the eFLASH_radiotherapy and exp_microdosimetry examplesSpeaker: Giuliana Milluzzo
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10:30
break 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
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)- 24
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ORANGE geometry construction for Geant4Speaker: Seth Johnson (Oak Ridge National Laboratory (US))
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An update on parallel geometry initialisationSpeaker: John Apostolakis (CERN)
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An update on the QSS integration for magnetic field propagationSpeakers: Rodrigo Castro (ETH Zurich), Rodrigo Daniel Castro (Universidad de Buenos Aires (AR))
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12:30
lunch break 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
Plenary: Kernel, Generic Processes and Materials 301
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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))-
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Specialized Tracking with G4VTrackingManagerSpeaker: Jonas Hahnfeld (CERN & Goethe University Frankfurt)
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Status of Reverse MC and usage in GRASSpeaker: Dr Laurent Desorgher (IRA CHUV)
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Status of channelingSpeaker: Alexei Sytov (Universita e INFN, Ferrara (IT))
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15:30
break 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
Parallel 1: Hadronic physics 301
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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-
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New method to make XS data library for neutronsSpeakers: Andrei Berngartd, Prof. Vladimir Ivantchenko (CERN)
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Validation of Geant4 fragmentation models for hadrontherapy beyond carbon ionsSpeaker: Kristie Moore (University Wollongong, Australia)
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Development of IAEA cross sections modelling isotope production from protons, for medical physics applicationsSpeaker: Ilan Eliyauh
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Determination of simulation parameter values for Light-Ion QMDSpeaker: Yoshihide Sato
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Vis UI Parallel: Parallel-World brain-storming 301
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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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Parallel 1: Electromagnetic Physics 301
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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)-
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Development of Geant4-DNA functionality in the physical and chemical stage for radiation protection in spaceSpeaker: Jay Archer (University of Wollongong)
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Ion transport in Geant4-DNASpeaker: Matvei Vologzhin (Tomsk State University (RU))
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Monte Carlo method for the angular distribution of the e−e+ pair created in the µ-nucleus collisionSpeaker: Gerardo Depaola
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Vis UI Parallel: Vis UI Discussion 301
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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-
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UI and Vis discussion: Introduction
See Vis UI Discussion document - https://docs.google.com/document/d/12iSwYCVTOHq9HztWxLrV0d_2l389UY3dUTqDAQO5cAQ/edit?usp=sharing
Speaker: John Allison - 40
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Transparency slider and Zoom-To-CursorSpeaker: Andrea Barresi
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UI and Vis discussion
Discussion
Speaker: Laurent Garnier
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10:30
break 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
Plenary: Electromagnetic physics 301
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Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.Conveners: Fada Guan, Prof. Vladimir Ivantchenko (CERN)- 43
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The automatisation of the execution of the G4-Med testsSpeaker: Carlo Mancini Terracciano
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Progress for simulation of chemistrySpeaker: Tran Ngoc Hoang (IN2P3)
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12:30
lunch break 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
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)-
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Update and Plan of G4CPT/CI-PerformanceSpeakers: Julia Yarba, Soon Yung Jun (Fermi National Accelerator Lab. (US))
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Computing Performance Results and Issues: CMSSpeaker: Prof. Vladimir Ivantchenko (CERN)
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Computing Performance Results and Issues: ATLASSpeaker: Marilena Bandieramonte (University of Pittsburgh (US))
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Computing Performance of Geant4 Medical ApplicationsSpeaker: Dr Miguel Antonio Cortes-Giraldo (Universidad de Sevilla)
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ePIC Detector Simulation at ScaleSpeaker: Maxim Potekhin (Brookhaven National Laboratory (US))
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Computing Performance Profiling and Geant4 simulation Activities at IBSSpeaker: Kihong Park (IBS)
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15:30
break 301
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Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
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-
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Vis and UI Status October 2025Speaker: John Allison
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Geometry slider and other developmentsSpeaker: Andrea Barresi
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VTK and Virtual RealitySpeaker: Stewart Boogert
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Banquet
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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
break 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
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
lunch break 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
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))- 58
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Geant4 R&D Assessment and discussionSpeaker: Marc Verderi (Centre National de la Recherche Scientifique (FR))
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15:30
break 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
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- 61
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Developments for pre-compound model and de-excitation moduleSpeakers: Nikita Chalyi, Prof. Vladimir Ivantchenko (CERN)
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Plenary: Documentation and Collaboration matters II 301
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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-
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Status and perspectives of Documentation and OutreachSpeakers: Alexander Howard (Imperial College (GB)), Luis Gerardo Sarmiento Pico
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DiscussionSpeaker: Alberto Ribon (CERN)
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10:30
break 301
301
Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A. -
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))-
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DiscussionSpeaker: Alberto Ribon (CERN)
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Announcement of 31st Geant4 Collaboration MeetingSpeaker: Pedro Arce (CIEMAT - Centro de Investigaciones Energéticas Medioambientales y Tec. (ES))
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Host closing remarksSpeaker: Makoto Asai
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Steering Board meeting 301
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Charles B. Wang Center
Stony Brook University 100 Circle Rd, Stony Brook, NY 11794, U.S.A.
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