Optical Photon Simulation with Mitsuba3
Particle detectors are simulated photon by photon, which is slow. We moved optical photon propagation out of Geant4 and into Mitsuba3, an open-source renderer, with a custom plugin for emitting photons. I built the photon-to-scene pipeline: the C++ emitter, the detector geometry in CAD and the scene setup.
400x faster on GPU70x on CPUvs Geant4



