30th Geant4 Collaboration Meeting

from Monday, October 20, 2025 (8:00 AM) to Friday, October 24, 2025 (6:00 PM)
Charles B. Wang Center (301)

        : Sessions
    /     : Talks
        : Breaks
Oct 20, 2025
Oct 21, 2025
Oct 22, 2025
Oct 23, 2025
Oct 24, 2025
AM
8:30 AM
Registration (until 9:00 AM)
9:00 AM
Plenary - Krzysztof Genser (Fermi National Accelerator Laboratory (US)) Alvaro Tolosa-Delgado (CERN) (until 10:30 AM)
9:00 AM Hosts Opening Remarks  
9:10 AM Spokes Opening Remarks  
9:20 AM Open and new requirements - LHC and other HEP Energy Frontier experiments - Marilena Bandieramonte (University of Pittsburgh (US))  
9:34 AM Open and new requirements - HEP intensity and cosmic frontier experiments - Krzysztof Genser (Fermi National Accelerator Laboratory (US))  
9:48 AM Open and new requirements - Nuclear Physics experiments - Luis Gerardo Sarmiento Pico  
10:02 AM Open and new requirements - Medical and biological science - Susanna Guatelli  
10:16 AM Open and new requirements - Space science and engineering - Dr Giovanni Santin Giovanni Santin  
10:30 AM --- break ---
11:00 AM
Plenary - Benjamin Morgan (University of Warwick (GB)) Alberto Ribon (CERN) (until 12:30 PM)
11:00 AM Status of the 4th general paper - Andrea Dell'Acqua (CERN)  
11:30 AM Proposal for the Physics Lists Working Group for 2026 - Alberto Ribon (CERN)  
11:50 AM Request to add custom physics models in G4PhysicsModelCatalog - Alberto Ribon (CERN)  
12:10 PM Integration/Deprecation of features in the Geant4 Toolkit - Benjamin Morgan (University of Warwick (GB))  
9:00 AM
Plenary - Francesco Romano (Universita & INFN, Bari) Ivana Hrivnacova (Université Paris-Saclay (FR)) (until 10:30 AM)
9:00 AM Extended Examples: General overview and WP status - Ivana Hrivnacova (Université Paris-Saclay (FR))  
9:15 AM New dna radial and phasespace examples - Sebastien Incerti (CNRS/IN2P3)  
9:25 AM New dna molcounters examples - Christian Velten (Albert Einstein College of Medicine)  
9:35 AM New dna microtrack example - Dr Miguel Antonio Cortes-Giraldo (Universidad de Sevilla)  
9:45 AM Recent Updates and Future Developments on Hadrontherapy and Radiobiology example - Alberto Sciuto  
9:55 AM Advanced Examples: General overview and WP status - Francesco Romano  
10:10 AM Update about the example on use of IAEAphsp files - Dr Miguel Antonio Cortes-Giraldo (Universidad de Sevilla)  
10:20 AM Minibeam dosimetric studies using the eFLASH_radiotherapy and exp_microdosimetry examples - Giuliana Milluzzo  
10:30 AM --- break ---
11:00 AM
Plenary - John Apostolakis (CERN) Andrei Gheata (CERN) (until 12:30 PM)
11:00 AM Update on VecGeom modellers - Andrei Gheata (CERN)  
11:20 AM ORANGE geometry construction 
for Geant4 - Seth Johnson (Oak Ridge National Laboratory (US))  
11:40 AM An update on parallel geometry initialisation - John Apostolakis (CERN)  
12:00 PM An update on the QSS integration for magnetic field propagation - Rodrigo Castro (ETH Zurich) Rodrigo Daniel Castro (Universidad de Buenos Aires (AR))  
9:00 AM
Parallel 1 - Tran Hoang (CNRS, France) Sebastien Incerti (CNRS/IN2P3) (until 10:30 AM)
9:00 AM Development of Geant4-DNA functionality in the physical and chemical stage for radiation protection in space - Jay Archer (University of Wollongong)  
9:20 AM Ion transport in Geant4-DNA - Matvei Vologzhin (Tomsk State University (RU))  
9:40 AM Monte Carlo method for the angular distribution of the e−e+ pair created in the µ-nucleus collision - Gerardo Depaola  
9:00 AM
Vis UI Parallel - Joseph Perl John Allison (until 10:30 AM)
9:00 AM UI and Vis discussion: Introduction - John Allison  
9:10 AM ToolsSG-GLES on OpenGL-3.2 - Guy Barrand  
9:20 AM Transparency slider and Zoom-To-Cursor - Andrea Barresi  
9:30 AM UI and Vis discussion - Laurent Garnier  
10:30 AM --- break ---
11:00 AM
Plenary -Prof. Vladimir Ivantchenko (CERN) Fada Guan (until 12:30 PM)
11:00 AM EM physics status for 11.4 and beyond - Prof. Vladimir Ivantchenko (CERN)  
11:20 AM The automatisation of the execution of the G4-Med tests - Carlo Mancini Terracciano  
11:40 AM Status of Geant4-DNA - Sebastien Incerti (CNRS/IN2P3)  
12:00 PM Progress for simulation of chemistry - Tran Ngoc Hoang (IN2P3)  
9:00 AM
Technical Forum (until 10:30 AM)
10:30 AM --- break ---
11:00 AM
Technical Forum (until 12:30 PM)
9:00 AM
Plenary - Alexander Howard (Imperial College (GB)) Luis Gerardo Sarmiento Pico (until 10:30 AM)
9:00 AM Status and perspectives of Documentation and Outreach - Luis Gerardo Sarmiento Pico Alexander Howard (Imperial College (GB))  
9:45 AM Discussion - Alberto Ribon (CERN)  
10:30 AM --- break ---
11:00 AM
Plenary - Benjamin Morgan (University of Warwick (GB)) Alberto Ribon (CERN) (until 12:30 PM)
11:00 AM Discussion - Alberto Ribon (CERN)  
11:30 AM Release schedule - Dr Gabriele Cosmo (CERN)  
11:40 AM Announcement of 31st Geant4 Collaboration Meeting - Pedro Arce (CIEMAT - Centro de Investigaciones Energéticas Medioambientales y Tec. (ES))  
11:50 AM Host closing remarks - Makoto Asai  
12:00 PM Closing remarks - Alberto Ribon (CERN)  
PM
12:30 PM --- lunch break ---
2:00 PM
Plenary - Seth Johnson (Oak Ridge National Laboratory (US)) Benjamin Morgan (University of Warwick (GB)) (until 3:30 PM)
2:00 PM Geant4 User Support Infrastructure - Benjamin Morgan (University of Warwick (GB))  
2:15 PM Geant4's Git Workflow Policy - Benjamin Morgan (University of Warwick (GB))  
2:30 PM Geant4 Development/Testing Tools Update - Benjamin Morgan (University of Warwick (GB))  
2:50 PM Maintenance topics in Core Categories for 2026 - Benjamin Morgan (University of Warwick (GB))  
3:30 PM --- break ---
4:00 PM
Plenary (until 5:30 PM)
5:30 PM
Reception (until 7:30 PM) (Zodiac Lobby)
12:30 PM --- lunch break ---
2:00 PM
Plenary - Igor Semeniouk (Centre National de la Recherche Scientifique (FR)) Marc Verderi (Centre National de la Recherche Scientifique (FR)) Pedro Arce (CIEMAT - Centro de Investigaciones Energéticas Medioambientales y Tec. (ES)) Makoto Asai (until 3:30 PM)
2:00 PM Specialized Tracking with G4VTrackingManager - Jonas Hahnfeld (CERN & Goethe University Frankfurt)  
2:25 PM Updates on kernel - Makoto Asai  
2:45 PM Status of Reverse MC and usage in GRAS - Dr Laurent Desorgher (IRA CHUV)  
3:10 PM Status of channeling - Alexei Sytov (Universita e INFN, Ferrara (IT))  
3:30 PM --- break ---
4:00 PM
Parallel 1 - Luis Gerardo Sarmiento Pico Alberto Ribon (CERN) (until 5:30 PM)
4:00 PM New method to make XS data library for neutrons - Andrei Berngartd Prof. Vladimir Ivantchenko (CERN)  
4:20 PM Validation of Geant4 fragmentation models for hadrontherapy beyond carbon ions - Kristie Moore (University Wollongong, Australia)  
4:40 PM Development of IAEA cross sections modelling isotope production from protons, for medical physics applications - Ilan Eliyauh  
5:00 PM Determination of simulation parameter values for Light-Ion QMD - Yoshihide Sato  
4:00 PM
Vis UI Parallel -Dr Gabriele Cosmo (CERN) Makoto Asai (until 5:30 PM)
12:30 PM --- lunch break ---
2:00 PM
Plenary - Soon Yung Jun (FNAL) Julia Yarba (until 3:30 PM)
2:00 PM Update and Plan of G4CPT/CI-Performance - Soon Yung Jun (Fermi National Accelerator Lab. (US)) Julia Yarba  
2:18 PM Computing Performance Results and Issues: CMS - Prof. Vladimir Ivantchenko (CERN)  
2:27 PM Computing Performance Results and Issues: ATLAS - Marilena Bandieramonte (University of Pittsburgh (US))  
2:36 PM Computing Performance of Geant4 Medical Applications - Dr Miguel Antonio Cortes-Giraldo (Universidad de Sevilla)  
2:54 PM ePIC Detector Simulation at Scale - Maxim Potekhin (Brookhaven National Laboratory (US))  
3:12 PM Computing Performance Profiling and Geant4 simulation Activities at IBS - Kihong Park (IBS)  
3:30 PM --- break ---
4:00 PM
Plenary - Joseph Perl John Allison (until 5:00 PM)
4:00 PM Vis and UI Status October 2025 - John Allison  
4:10 PM Geometry slider and other developments - Andrea Barresi  
4:20 PM OpenGL-3 and all that - Guy Barrand  
4:30 PM VTK and Virtual Reality - Stewart Boogert  
4:40 PM Vis and UI Discussion - Laurent Garnier  
6:00 PM
Banquet (until 9:00 PM)
12:30 PM --- lunch break ---
2:00 PM
Plenary - Seth Johnson (Oak Ridge National Laboratory (US)) Marc Verderi (Centre National de la Recherche Scientifique (FR)) (until 3:30 PM)
2:00 PM AdePT - Severin Diederichs (CERN)  
2:30 PM Celeritas - Seth Johnson (Oak Ridge National Laboratory (US))  
3:00 PM Geant4 R&D Assessment and discussion - Marc Verderi (Centre National de la Recherche Scientifique (FR))  
3:30 PM --- break ---
4:00 PM
Plenary - Luis Gerardo Sarmiento Pico Alberto Ribon (CERN) (until 5:30 PM)
4:00 PM Status of Hadronic Physics - Alberto Ribon (CERN)  
4:20 PM Developments for pre-compound model and de-excitation module - Nikita Chalyi Prof. Vladimir Ivantchenko (CERN)  
4:40 PM Update on Fluka-Cern - Gabrielle Hugo (CERN)  
2:00 PM
Steering Board meeting (until 5:00 PM)