Alternative software to geant4?

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The discussion centers on the challenges of simulating a gaseous detector with UV lamps using Geant4, highlighting its limitations in handling gaseous mediums and low-energy gamma emissions around 30 eV. The user considers Garfield as an alternative but finds its simulation time excessive. They seek software alternatives to Geant4, preferably in C++, C#, or Python, and mention discovering some bindings that enhance usability but may not address their specific needs. Additionally, they express surprise at the lack of Julia implementations or bindings for Geant4, noting Julia's growing popularity in scientific computing. Links to GAMOS and an alternatives list are shared, although the effectiveness of these alternatives remains uncertain.
LCSphysicist
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TL;DR
Geant4 not working as the expected :/
I need to simulate a gaseous detector involving UV Lamp's. I have tried using Geant4.

Now i think this says by itself, two geant4's weak point: Gaseous medium, it is relatively bad at simulate in it, and low energy gamma gun, near 30 eV, which is too low for Geant4's physicslists. Garfield was one option to simulate the gaseous detector, but the simulation takes too much time.

Do you know some software similar to geant4? Preferably using or c++, or c# or python language. But if it is another language, no problem.
 
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I couldn't find any obvious alternatives to Geant4 but I did find some bindings that make it easier to use which likely won't help here but decided to post them in case it would.

http://fismed.ciemat.es/GAMOS/

and here's an alternatives list but not sure if they are really alternatives or not as they may have some functionality but not everything in Geant4

https://getalternative.net/software/geant4

I'm surprised that there are no Julia implementations of or bindings for Geant4. Julia is an open source Matlab like numerical computing language that is rapidly taking the scientific world by storm.

https://bib-pubdb1.desy.de/record/4...21_Article_PerformanceOfJuliaForHighEnerg.pdf
 

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