Geant4 Forum
Apr 3, 2026 · Discussion forum for the Geant4 simulation toolkit
Importing CAD geometries into Geant4: practical notes and common ...
Jan 30, 2026 · 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 …
Gamma gamma angular correlation - #3 by svanlang - Particles, Track ...
Jan 17, 2024 · It turns out I was too quick to open this topic, probably I was a bit more confident as usual due to the fact that multiple people reported this before and the lack of response. I’m now convinced …
Has anyone successfully rebuilt G4 10.07.p04 on Apple Silicon?
Dec 29, 2025 · I’ve upgraded my obsolete MacBook Pro (mid-2012 series, MacOS 10.15.7) to a new machine with an Apple M5 chip (macOS Tahoe). In order to continue my experiment’s migration …
Command thresholdForVeryLongDecayTime for radioactive decay
Apr 7, 2025 · Please fill out the following information to help in answering your question, and also see tips for posting code snippets. If you don’t provide this information it will take more time to help with …
How can i reduce pileup errors? - Geant4 Forum
Sep 21, 2023 · Ive got an Xray simulation up and running which looks quite good for my expectations but i still got some weird hits recorded: this for example is a silver target at 40keV im wondering why …
logicalVolume->SetSensitiveDetector - Geant4 Forum
Mar 8, 2021 · hello everyone, when i compile my code i get this error: in detector contraction i have this code: G4SDManager* SDman = G4SDManager::GetSDMpointer (); G4String SDname; …
10.7.0 Qt3D package issues with cmake - Geant4 Forum
Dec 6, 2020 · Installing 10.7.0 I get warnings in cmake that Qt53DCore;Qt53DExtras;Qt53DRender are missing and it aborts make -j4 at “ [0%] Automatic MOC for target G4OpenGL”
How to execute macro file in Windows? - Geant4 Forum
Dec 13, 2022 · I wanted to execute run1.mac of example B1 in Windows, I used the command start exampleB1.exe run1.mac and one page I thought to be correct showed up but exited 1 second later. …
Problem calling twice to runmanger - Geant4 Forum
Nov 12, 2019 · Digging through the Geant4 source code led me to the conclusion that G4RunManager and G4RunManagerKernel are fundamentally hostile to this idea. I’m using Catch2 which integrates …