Fast simulation of Time-of-Flight detectors at the LHC

EPJ Web of Conferences

Sykora Tom¹  Rousselle Olivier² 

[1] Institute of Particle and Nuclear Physics, Faculty of Mathematics and Physics, Charles University;Laboratoire Kastler Brossel, Sorbonne Université, ENS-PSL, Collège de France, CNRS;

关键词: geant4;    python/numba;    hep;    cherenkov detector;   

DOI  :  10.1051/epjconf/202125103027

来源: DOAJ

【 摘 要 】

The modelling of Cherenkov based detectors is traditionally done using Geant4 toolkit. In this work, we present another method based on Python programming language and Numba high performance compiler to speed up the simulation. As an example we take one of the Forward Proton Detectors at the CERN LHC - ATLAS Forward Proton (AFP) Time-of-Flight, which is used to reduce the background from multiple proton-proton collisions in soft and hard diffiractive events. We describe the technical details of the fast Cherenkov model of photon generation and transportation through the optical part of the ToF detector. The fast simulation is revealed to be about 200 times faster than the corresponding Geant4 simulation, and provides similar results concerning length and time distributions of photons. The study is meant as the first step in a construction of a building kit allowing creation of a fast simulation of an arbitrary shaped optical part of detectors.

【 授权许可】

Unknown