Optical photon emission in extended airshowers
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Date
2023
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Abstract
With the motivation to improve experimental gains and precision, established astroparticle
experiments are currently undergoing massive upgrades. In addition,
several new experiments are being built or planned. With the resulting gain in
observational quality, the amount and accuracy of simulated data required for the
analysis is also rising. In order to meet the increasing requirements and complexity
due to the experiments’ growth and to provide a unified software ecosystem, it was
decided to re-develop the de facto standard extensive air shower simulation CORSIKA
completely in C++ based on the original Fortran code. Since one of the largest runtime
consumers is the propagation of millions of optical Cherenkov and fluorescence
photons, and many experiments are starting to use them for measurements, it was
decided to develop hardware-accelerated code to speed up the simulation. Specific
methods have been developed to propagate photons on deep learning acceleration
hardware similar to classical GPUs to take additional advantage of the current and
future growth of the deep learning sector. In particular, Nvidia accelerators were
tested.
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Keywords
Corsika, Monte-Carlo-Simulation, Airshower