Dortmund 2021 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 62: Search for New Particles V

T 62.4: Vortrag

Mittwoch, 17. März 2021, 16:45–17:00, Tl

Search for new physics at NA62: beam line simulation for background studies — •Simone Schuchmann — Johannes Gutenberg University Mainz

The NA62 experiment challenges the Standard Model with measurements of rare charged kaon decays from a secondary charged kaon beam. In addition, searches for dark matter and exotic particles as well as high precision measurements of various kaon decays are performed. Not only the standard proton-on-target technique for secondary beam particle production is employed but also dumping of the proton beam upstream the detector region. Especially for these additional research targets the precise knowledge of the beam induced background is essential.

The background is produced by the decay of secondary beam particles and by beam interactions with material before reaching the detector. It is dominated by muons though careful measures to sweep them out of the detector acceptance were taken by the beam line design. In beam dump mode, the proton-on-material interaction is the main source for possible dark matter particle production as well as for secondary particle background. A simulation framework was developed which incorporates the detailed description of the NA62 detector using the GEANT4 software and the full secondary beam line employing the BDSIM software. In this contribution, the results of background simulation studies will be presented and an outlook for further possible measurements will be given.