Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 12: Astroteilchenphysik: Methoden I

T 12.6: Talk

Monday, March 25, 2019, 17:15–17:30, S12

A GPU-Based Photon Tracker for the Wavelength shifting Optical Module (WOM) — •Florian Thomas¹, John Rack-Helleis¹, Sebastian Böser¹, and Elmar Schömer² for the IceCube collaboration — ¹Institute of Physics, Mainz — ²Institute of Computer Science, Mainz

The Wavelength shifting Optical Module consists of a cylindrical tube coated with wavelength shifting paint and read out by a photomultiplier tube (PMT) optically attached at each end. Light striking the surface of the tube is absorbed, shifted towards longer wavelengths and guided to the PMT by total internal reflection within the walls of the tube.

This talk presents the current status of a high performance photon tracking simulation for the WOM which runs on CUDA-enabled GPUs. A prototype of this simulation processes photons approximately 240 times faster than commercial software, and we have identified opportunities for additional optimization.