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Cryogenic characterization of a [Formula omitted] crystal and new results on spin-dependent dark matter interactions with ordinary matter

Abdelhameed, A. H ; Angloher, G ; Bauer, P ; Bento, A ; Bertoldo, E ; Breier, R ; Bucci, C

The European physical journal. C, Particles and fields, 2020-09, Vol.80 (9) [Periódico revisado por pares]

Springer

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  • Título:
    Cryogenic characterization of a [Formula omitted] crystal and new results on spin-dependent dark matter interactions with ordinary matter
  • Autor: Abdelhameed, A. H ; Angloher, G ; Bauer, P ; Bento, A ; Bertoldo, E ; Breier, R ; Bucci, C
  • É parte de: The European physical journal. C, Particles and fields, 2020-09, Vol.80 (9)
  • Descrição: In this work, a first cryogenic characterization of a scintillating [Formula omitted] 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 [Formula omitted] at cryogenic temperatures. The second achieved an energy threshold of ( [Formula omitted]) eV which allows setting a competitive limit on the spin-dependent dark matter particle-proton scattering cross section for dark matter particle masses between [Formula omitted] and [Formula omitted]. Secondly, a detector module with a 373 g [Formula omitted] 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.
  • Editor: Springer
  • Idioma: Inglês
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