Dec 31, 2025 · Discussion forum for the Geant4 simulation toolkit

Jul 14, 2020 · I am very new to geant4 and I am attempting to score the energy depos due to the radioactive decay of Tb160 in a lead box. I have used extended/radioactive decay as a template and …

Aug 19, 2020 · In the radioactivedecay example, there are two ways provided to initialize the histogram parameters (e.g., nbin, vmin, vmax). One is to use analysisManager->CreateH1, and the other is …

Mar 7, 2020 · I’m calculating total cross section of heavy ion interacting with hydrogen atoms or molecules. There is a work of Voitkiv: @article {voitkiv, title= {Hydrogen and helium ionization by …

Dec 8, 2021 · Hello. Please how can I make Qt GUI work for geant4 on windows. I built with Qt and when I wanted to try example B1, the Qt GUI did not show and not even listed as one of the UI. Only …

May 1, 2022 · Hi, community!! I am new to Geant4. I tried to boot geant4 with Qt-based GUI but Error said Geant4 kernel is not initialized. Please let me know how to to ...

Jan 31, 2023 · Hi dear users, I run a simulation of DT fusion reaction and the out put result shown attached. I am having difficulty in understanding the cross section unit displayed in “Cm^-1” please i …

Jun 14, 2019 · I am trying to simulate an X-Ray interaction with a SiLi detector however every time a particle interacts with any volume which I have designated a sensitive detector there is a seg fault. …

Aug 24, 2023 · Always specify which Geant4 version, which platform, and which compiler you are using Don’t use all caps. Use a descriptive Title. Do not put URGENT!, or NEED HELP NOW, etc. in your …

Jul 7, 2021 · Hello, in my simulation I simulate a 45 GeV positron beam hitting 2 targets of several shapes. Now I would after the multi-target, a block of tungsten and I would study the positron …