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Title: Cryogenic characterization of a $$\hbox {LiAlO}_{2}$$ crystal and new results on spin-dependent dark matter interactions with ordinary matter
Authors: Abdelhameed, A. H.
Angloher, G. 
Bauer, P.
Bento, A. 
Bertoldo, E.
Breier, R.
Bucci, C. 
Canonica, L.
D’Addabbo, A.
Di Lorenzo, S.
Erb, A. 
Feilitzsch, F. V.
Iachellini, N. Ferreiro
Fichtinger, S.
Fuchs, D.
Fuss, A.
Ghete, V. M.
Garai, A.
Gorla, P.
Hauff, D. 
Ješkovský, M.
Jochum, J. 
Kaizer, J.
Kaznacheeva, M.
Kinast, A.
Kluck, H.
Kraus, H.
Langenkämper, A.
Mancuso, M.
Mokina, V.
Mondragon, E.
Olmi, M.
Ortmann, T.
Pagliarone, C.
Palušová, 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. 
Usherov, I. 
Wagner, F.
Willers, M. 
Zema, V.
Zeman, J.
Brützam, M.
Ganschow, S.
Keywords: Dark matter; Cryogenics; Spin-dependent; Lithium; Neutrons
Issue Date: 2020
Publisher: Springer Nature
Project: DFG by SFB1258 and the Origins Cluster, and by the BMBF05A17WO4 
Serial title, monograph or event: European Physical Journal C
Volume: 80
Issue: 9
Abstract: In this work, a first cryogenic characterization of a scintillating LiAlO2 single crystal is presented. The results achieved show that this material holds great potential as a target for direct dark matter search experiments. Three different detector modules obtained from one crystal grown at the Leibniz-Institut für Kristallzüchtung (IKZ) have been tested to study different properties at cryogenic temperatures. Firstly, two 2.8 g twin crystals were used to build different detector modules which were operated in an above-ground laboratory at the Max Planck Institute for Physics (MPP) in Munich, Germany. The first detector module was used to study the scintillation properties of LiAlO2 at cryogenic temperatures. The second achieved an energy threshold of (213.02 ±1.48) eV which allows setting a competitive limit on the spin-dependent dark matter particle-proton scattering cross section for dark matter particle masses between 350 MeV/c2 and 1.50 GeV/c2. Secondly, a detector module with a 373 g LiAlO2 crystal as the main absorber was tested in an underground facility at the Laboratori Nazionali del Gran Sasso (LNGS): from this measurement it was possible to determine the radiopurity of the crystal and study the feasibility of using this material as a neutron flux monitor for low-background experiments.
ISSN: 1434-6044
DOI: 10.1140/epjc/s10052-020-8329-4
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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