Mar 11, 2026 · Discussion forum for the Geant4 simulation toolkit

Jan 30, 2026 · Hi all, I would like to share some practical experience on importing CAD geometries into Geant4, as this question comes up regularly and many of the problems are not obvious from the …

Jul 13, 2020 · The instructions for how to install Geant4 on Windows Building and Installing from Source — Geant4 Installation Guide 11.2 documentation includes the step, “confirm that you have the MSVC …

Jun 3, 2025 · Upon reviewing the documentation on the charge state models for ions, I noticed that Geant4 provides only an effective charge treatment. Specifically, the G4ionIonisation class …

Oct 22, 2025 · For Windows 11 users, I believe many friends will love this working environment just like I do. The overall installation and compilation configuration are quite simple, and it’s also very …

Mar 25, 2025 · I have used the above versions and try to compile the basic example B1 of the geant4. However, rather than showing the geometry it gives me the result below. Would you please help me …

Oct 14, 2022 · See Geant4 System/Software Prerequisites — Geant4 Installation Guide 11.0 documentation to determine the list of packages needed, then Building and Installing from Source — …

Mar 5, 2025 · Hello, I am trying to install Geant4 with conda on a Linux virtual machine ran with an ARM macOS. After downloading conda I tries running the following commands: conda config --add …

May 19, 2025 · Geant4 Version: 11.2.2 _Operating System:_Ubuntu _Compiler/Version:_11.4.0 _CMake Version:_3.22.1 —I am new to geant-4, I am unable to desgine a project, that implies to the fact that I …

Nov 3, 2025 · Hello, I’m currently simulating F-18 decays in Geant4. When I run the simulation with /run/beamOn N, I understand that Geant4 treats this as N independent events - each event starting …