Geant4-based electromagnetic background model for the CRESST dark matter experiment

A H Abdelhameed; G Angloher; P Bauer; A Bento; E Bertoldo; R Breier; C Bucci; L Canonica; A D'Addabbo; S Di Lorenzo; A Erb; F V Feilitzsch; N Ferreiro Iachellini; S Fichtinger; A Fuss; P Gorla; D Hauff; M Jes Kovský; J Jochum; J Kaizer; A Kinast; H Kluck; H Kraus; A Langenkämper; M Mancuso; V Mokina; E Mondragón; M Olmi; T Ortmann; C Pagliarone; V Palus Ová; L Pattavina; F Petricca; W Potzel; P Povinec; F Pröbst; F Reindl; J Rothe; K Schäffner; J Schieck; V Schipperges; D Schmiedmayer; S Schönert; C Schwertner; M Stahlberg; L Stodolsky; C Strandhagen; R Strauss; C Türkoğlu; I Usherov; M Willers; V Zema; J Zeman

doi:10.1140/epjc/s10052-019-7385-0

Geant4-based electromagnetic background model for the CRESST dark matter experiment

Eur Phys J C Part Fields. 2019;79(10):881. doi: 10.1140/epjc/s10052-019-7385-0. Epub 2019 Oct 26.

Authors

A H Abdelhameed¹, G Angloher¹, P Bauer¹, A Bento^{1

2}, E Bertoldo¹, R Breier³, C Bucci⁴, L Canonica¹, A D'Addabbo^{4

5}, S Di Lorenzo^{4

5}, A Erb^{6

7}, F V Feilitzsch⁶, N Ferreiro Iachellini¹, S Fichtinger⁸, A Fuss^{8

9}, P Gorla⁴, D Hauff¹, M Jes Kovský³, J Jochum¹⁰, J Kaizer³, A Kinast⁶, H Kluck^{8

9}, H Kraus¹¹, A Langenkämper⁶, M Mancuso¹, V Mokina⁸, E Mondragón⁶, M Olmi^{4

5}, T Ortmann⁶, C Pagliarone^{4

12}, V Palus Ová³, L Pattavina^{6

5}, F Petricca¹, W Potzel⁶, P Povinec³, F Pröbst¹, F Reindl^{8

9}, J Rothe¹, K Schäffner¹, J Schieck^{8

9}, V Schipperges¹⁰, D Schmiedmayer^{8

9}, S Schönert⁶, C Schwertner^{8

9}, M Stahlberg^{8

9}, L Stodolsky¹, C Strandhagen¹⁰, R Strauss⁶, C Türkoğlu^{8

9

13}, I Usherov¹⁰, M Willers⁶, V Zema^{4

5

14}, J Zeman³

Affiliations

¹ 1Max-Planck-Institut für Physik, 80805 Munich, Germany.
² 9Departamento de Fisica, Universidade de Coimbra, 3004 516 Coimbra, Portugal.
³ 2Faculty of Mathematics, Physics and Informatics, Comenius University, 84248 Bratislava, Slovakia.
⁴ 3INFN, Laboratori Nazionali del Gran Sasso, 67100 Assergi, Italy.
⁵ 10GSSI-Gran Sasso Science Institute, 67100 L'Aquila, Italy.
⁶ 4Physik-Department and Excellence Cluster Universe, Technische Universität München, 85747 Garching, Germany.
⁷ Walther-Meißner-Institut für Tieftemperaturforschung, 85748 Garching, Germany.
⁸ 5Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, 1050 Wien, Austria.
⁹ 6Atominstitut, Technische Universität Wien, 1020 Wien, Austria.
¹⁰ 7Eberhard-Karls-Universität Tübingen, 72076 Tübingen, Germany.
¹¹ 8Department of Physics, University of Oxford, Oxford, OX1 3RH UK.
¹² 12Dipartimento di Ingegneria Civile e Meccanica, Universitá degli Studi di Cassino e del Lazio Meridionale, 03043 Cassino, Italy.
¹³ 14Present Address: School of Mathematical and Physical Sciences, University of Sussex, Brighton, BN1 9QH UK.
¹⁴ 13Department of Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden.

Abstract

The CRESST (Cryogenic Rare Event Search with Superconducting Thermometers) dark matter search experiment aims for the detection of dark matter particles via elastic scattering off nuclei in ${CaWO}_{4}$ crystals. To understand the CRESST electromagnetic background due to the bulk contamination in the employed materials, a model based on Monte Carlo simulations was developed using the Geant4 simulation toolkit. The results of the simulation are applied to the TUM40 detector module of CRESST-II phase 2. We are able to explain up to $(68 \pm 16) %$ of the electromagnetic background in the energy range between 1 and $40 keV$ .