g4new
Easiest way to get a fully working Geant4 project ready to run
Quick Start
pip install g4new
g4new init myproject
g4new init options
g4new init PROJECT_NAME [OPTIONS]
| Option | Default | Description |
|---|---|---|
--particle TEXT |
e- |
Primary particle fired by the generated gun |
--energy TEXT |
6 MeV |
Primary energy, e.g. 6 MeV, 1.5 GeV (value + a Geant4 unit: eV/keV/MeV/GeV/TeV) |
--physics TEXT |
FTFP_BERT |
Geant4 reference physics list |
--skip-cmake |
Skip the CMake dependency check | |
--skip-geant4 |
Skip the Geant4 dependency check | |
--override |
Overwrite the project directory if it already exists |
Generated project
g4new init myproject scaffolds a complete, buildable Geant4 application. Its geometry places a central water Target volume; an EventAction/SteppingAction pair scores the energy deposited there and writes analysis output through G4AnalysisManager. Alongside the sources it ships macros/vis.mac, macros/run.mac, a generated README.md, and a .gitignore.
myproject/
CMakeLists.txt
macros/
vis.mac
run.mac
include/
src/
README.md
.gitignore
Build it:
cmake -B myproject/build -S myproject
cmake --build myproject/build
Running the generated project
Run with no arguments to open an interactive OpenGL viewer (executes macros/vis.mac):
./build/myproject
Run headless/batch by passing a macro:
./build/myproject --mac macros/run.mac
The executable parses its own command-line options:
| Option | Description |
|---|---|
--mac <file> |
Run the given macro in batch mode instead of opening the viewer |
--verbose |
Enable verbose output (reserved for future use) |
--out <file> |
Output file (reserved for future use) |
--help, -h |
Show usage |
1 maintainer
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