Open AccessCosmic activation of Cresst’s CaWO4 crystals
Author(s) -
H. Kluck,
G. Angloher,
G. Benato,
A. Bento,
A. Bertolini,
R. Breier,
C. Bucci,
L. Caica,
A. D'Addabbo,
S. Di Lorenzo,
L. Einfalt,
A. Erb,
F. von Feilitzsch,
N. Ferreiro Iachellini,
S. Fichtinger,
D. Fuchs,
A. Fuss,
A. Garai,
V. M. Ghete,
P. Gorla,
S. Gupta,
D. Hauff,
M. Ješkovský,
J. Jochum,
M. Kaznacheeva,
A. Kinast,
H. Kraus,
A. Langenkämper,
M. Mancuso,
L. Marini,
V. Mokina,
A. Nilima,
M. Olmi,
T. Ortmann,
C. Pagliarone,
V. Palušová,
L. Pattavina,
F. Petricca,
W. Potzel,
Pavel P. Povinec,
F. Pröbst,
Francesco Pucci,
F. Reindl,
J. Rothe,
K. Schäffner,
J. Schieck,
D. Schmiedmayer,
S. Schönert,
C. Schwertner,
M. Stahlberg,
L. Stodolsky,
C. Strandhagen,
R. Strauß,
I. Usherov,
F. Wagner,
M. Willers,
V. Zema
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2156/1/012227
Subject(s) - physics , cosmic ray , dark matter , nuclear physics , cosmic cancer database , crystal (programming language) , astrophysics , computer science , programming language
The CRESST experiment searches for dark matter induced nuclear recoils inside CaWO 4 based cryogenic calorimeters at the Laboratori Nazionali del Gran Sasso (LNGS) in Italy. To identify reliably a potential signal, a precise understanding of its background budget is crucial. An important background category could be “cosmogenics”: radionuclides produced via interactions with cosmic rays, mainly during the crystal production at surface facilities. Albeit CaWO 4 is a well-established calorimetric material, no systematic study of its susceptibility for cosmic activation existed so far. In this contribution, we will first report the exposure profile of CRESST’s in-house grown TUM93 crystal to cosmic rays. Then we will identify the most prominent cosmogenics via AcTIVIA calculations. Afterwards we discuss the expected background spectrum based on Geant4 simulations and compare it to measurements.