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1.	Abdelhameed, A. H., et al. (author) Cryogenic characterization of a LiAlO2 crystal and new results on spin-dependent dark matter interactions with ordinary matter: CRESST Collaboration 2020 In: European Physical Journal C. - : Springer Science and Business Media LLC. - 1434-6044 .- 1434-6052. ; 80:9 Journal article (peer-reviewed)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 fur Kristallzuchtung (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.
2.	Kluck, H., et al. (author) Latest results of CRESST-III's search for sub-GeV/c(2) dark matter 2020 In: Journal of Physics: Conference Series. - : IOP Publishing. - 1742-6596 .- 1742-6588. ; 1468:1 Conference paper (peer-reviewed)abstract The CRESST-III experiment searches for direct interactions of dark matter with ordinary matter. The main event signature would be a nuclear recoil inside one of the scintillating CaWO4 crystals. Operating the crystals as cryogenic calorimeters provides a phonon signal as measure of the deposited energy. The simultaneous readout of both signals is used to actively discriminate backgrounds. CRESST-III focuses on the sub-GeV/c(2) mass region where the sensitivity is driven by the threshold. In the first data taking campaign of CRESST-III from 2016-2018 an unprecedented low threshold of 30.1 eV for nuclear recoils was obtained. In this contribution, we will report the status of the experiment and the latest results. [GRAPHICS]

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Type of publication: conference paper (1); journal article (1)

Type of content: peer-reviewed (2)

Author/Editor: Schieck, J. (2); Pagliarone, C. (2); Stahlberg, M. (2); Abdelhameed, A. H. (2); Angloher, G. (2); Bauer, P. (2); show more...; Bento, A. (2); Bertoldo, E. (2); Breier, R. (2); Bucci, C. (2); Canonica, L. (2); D'Addabbo, A. (2); Di Lorenzo, S. (2); Erb, A. (2); Feilitzsch, F. V. (2); Iachellini, N. Ferre ... (2); Fichtinger, S. (2); Fuss, A. (2); Gorla, P. (2); Hauff, D. (2); Jeskovsky, M. (2); Jochum, J. (2); Kaizer, J. (2); Kinast, A. (2); Kluck, H. (2); Langenkaemper, A. (2); Mancuso, M. (2); Mokina, V. (2); Mondragon, E. (2); Olmi, M. (2); Ortmann, T. (2); Palusova, V. (2); Pattavina, L. (2); Petricca, F. (2); Potzel, W. (2); Povinec, P. (2); Proebst, F. (2); Reindl, F. (2); Rothe, J. (2); Schaeffner, K. (2); Schipperges, V. (2); Schmiedmayer, D. (2); Schoenert, S. (2); Schwertner, C. (2); Stodolsky, L. (2); Strandhagen, C. (2); Strauss, R. (2); Usherov, I. (2); Willers, M. (2); Zema, Vanessa, 1991 (2); show less...

University: Chalmers University of Technology (2)

Language: English (2)

Research subject (UKÄ/SCB): Natural sciences (2); Engineering and Technology (1)

Year: 2020 (2)Undo refine

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