Output files and Allplot issues

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Solomon Zweig

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Apr 21, 2026, 12:05:16 PMApr 21
to G4Beamline
Hi,

I recently started to use G4beamline to prepare for a summer project, and I am having issues with obtaining the output files from simulations. When I input a simulation file such as the example provided in the G4beamline download, the simulation runs as expected and the viewing window appears, but there's no visible output file in the directory and the simulation log file is empty. I have tried to fix this by adding some commands into the input files, but that hasn't worked so far. Does anyone know how to fix this?

Thank you

Tom Roberts

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Apr 21, 2026, 12:15:44 PMApr 21
to Solomon Zweig, G4Beamline

If you leave visualization on, G4beamline does not write output files. This is mentioned several places in the documentation. So try your simulation with visualization on for enough events to be sure it is working correctly. Then turn visualization off and run for real.

Tom Roberts

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