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 …

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 …

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 …

Aug 16, 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 to …

Aug 22, 2019 · G4TENDL is the Geant4 version of the TENDL database which is filled with the output of the TALYS nuclear model code. Its entries are the result of calculation and not measured data as is …

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 …