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

• Author(s): Abdelhameed, A. H. ; Angloher, G. ; Bauer, P. ; Bento, A. ; Bertoldo, E. ; Breier, R. ; Bucci, C. ; Canonica, L. ; D'Addabbo, A. ; Lorenzo, S. Di ; Erb, A. ; Feilitzsch, F. V. ; Iachellini, N. Ferreiro ; Fichtinger, S. ; Fuss, A. ; Gorla, P. ; Hauff, D. ; Jes Kovský, M. ; Jochum, J. ; Kaizer, J. ; Kinast, A. ; Kluck, H. ; Kraus, H. ; Langenkämper, A. ; Mancuso, M. ; Mokina, V. ; Mondragón, E. ; Olmi, M. ; Ortmann, T. ; Pagliarone, C. ; Palus Ová, V. ; Pattavina, L. ; Petricca, F. ; Potzel, W. ; Povinec, P. ; Pröbst, F. ; Reindl, F. ; Rothe, J. ; Schäffner, K. ; Schieck, J. ; Schipperges, V. ; Schmiedmayer, D. ; Schönert, S. ; Schwertner, C. ; Stahlberg, M. ; Stodolsky, L. ; Strandhagen, C. ; Strauß, R. ; Türkoğlu, C. ; Usherov, I. ; Willers, M. ; Zema, V. ; Zeman, J.
• Date: 2019
• Persistent ID: https://hdl.handle.net/10316/106929
• Origin: Estudo Geral - Universidade de Coimbra
• Document Type: Journal article
• Language: English

Description

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 CaWO4 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±16)% of the electromagnetic background in the energy range between 1 and 40keV .

We are grateful to LNGS for their generous support of CRESST. This work has been supported through the FWF: I3299-N36 and W1252-N27, the DFG by the SFB1258 and the Excellence Cluster Universe, by the BMBF: 05A17WO4 and 05A17VTAand by the APVV: 15-0576