TY - JOUR
T1 - Geant4 simulations of the influence of contamination and roughness of the detector surface on background spectra in CRESST
AU - CRESST Collaboration
AU - Grüner, C.
AU - Angloher, G.
AU - Banik, S.
AU - Benato, G.
AU - Bento, A.
AU - Bertolini, A.
AU - Breier, R.
AU - Bucci, C.
AU - Burkhart, J.
AU - Canonica, L.
AU - D'Addabbo, A.
AU - Di Lorenzo, S.
AU - Einfalt, L.
AU - Erb, A.
AU - Feilitzsch, F. V.
AU - Fichtinger, S.
AU - Fuchs, D.
AU - Garai, A.
AU - Ghete, V. M.
AU - Gorla, P.
AU - Guillaumon, P. V.
AU - Gupta, S.
AU - Hauff, D.
AU - Ješkovský, M.
AU - Jochum, J.
AU - Kaznacheeva, M.
AU - Kinast, A.
AU - Kluck, H.
AU - Kraus, H.
AU - Kuckuk, S.
AU - Langenkämper, A.
AU - Mancuso, M.
AU - Marini, L.
AU - Mauri, B.
AU - Meyer, L.
AU - Mokina, V.
AU - Olmi, M.
AU - Ortmann, T.
AU - Pagliarone, C.
AU - Pattavina, L.
AU - Petricca, F.
AU - Potzel, W.
AU - Povinec, P.
AU - Pröbst, F.
AU - Pucci, F.
AU - Reindl, F.
AU - Rothe, J.
AU - Schäffner, K.
AU - Schieck, J.
AU - Schönert, S.
N1 - Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).
PY - 2024/3/22
Y1 - 2024/3/22
N2 - CRESST is an experiment for the direct detection of dark matter, capable of detecting nuclear recoils down to 10 eV, which results in an impressive sensitivity for sub-GeV dark matter particles. For a better understanding of the measured background a background model is developed. The background components are considered via Geant4 simulations. At the current state, the CRESST background model only considers bulk contaminations and treats all detector surfaces as perfect plains. This contribution presents potential effects of a surface contamination with radiogenic nuclides, in combination with the influence of the crystals surface roughness. Nuclide decays near the crystal surface may lead to partial energy deposition inside the detector, potentially causing MeV energy events to influence the background in the keV energy range. Since default Geant4 is not capable of simulating a rough surface, a new extension for simulating a rough surface is developed and the impact of different roughness configurations is studied.
AB - CRESST is an experiment for the direct detection of dark matter, capable of detecting nuclear recoils down to 10 eV, which results in an impressive sensitivity for sub-GeV dark matter particles. For a better understanding of the measured background a background model is developed. The background components are considered via Geant4 simulations. At the current state, the CRESST background model only considers bulk contaminations and treats all detector surfaces as perfect plains. This contribution presents potential effects of a surface contamination with radiogenic nuclides, in combination with the influence of the crystals surface roughness. Nuclide decays near the crystal surface may lead to partial energy deposition inside the detector, potentially causing MeV energy events to influence the background in the keV energy range. Since default Geant4 is not capable of simulating a rough surface, a new extension for simulating a rough surface is developed and the impact of different roughness configurations is studied.
UR - http://www.scopus.com/inward/record.url?scp=85189204949&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:85189204949
SN - 1824-8039
VL - 441
JO - Proceedings of Science
JF - Proceedings of Science
M1 - 092
T2 - 18th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2023
Y2 - 28 August 2023 through 1 September 2023
ER -