“CRESST” employs scintillating CaWO4 crystals to search for Dark Matter (DM) induced nuclear recoils. The detector response to a nuclear recoil is described by the quenching factors (QFs). To measure the bulk QFs at low temperatures of ~20 mK, a dedicated neutron scattering facility has been set up. Nuclear recoils are induced here by using a pulsed neutron beam. Via a coincidence measurement it was possible to identify the recoiling nucleus (O, Ca, W). In the present work, the experimental setup and the data analysis were developed and its good performance was proven. The results are also of importance for the analysis of future European large-scale experiments, e.g. “EURECA”.
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“CRESST” employs scintillating CaWO4 crystals to search for Dark Matter (DM) induced nuclear recoils. The detector response to a nuclear recoil is described by the quenching factors (QFs). To measure the bulk QFs at low temperatures of ~20 mK, a dedicated neutron scattering facility has been set up. Nuclear recoils are induced here by using a pulsed neutron beam. Via a coincidence measurement it was possible to identify the recoiling nucleus (O, Ca, W). In the present work, the experimental setu...
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