Scintillation light and phonon measurement based on Ir/Au-thermometers

Details Scintillation light and phonon measurement based on Ir/Au-thermometers Scintillation light and phonon measurement based on Ir/Au-thermometers

Feb 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aipc..605..493s&link_type=abstract

LOW TEMPERATURE DETECTORS: Ninth International Workshop on Low Temperature Detectors. AIP Conference Proceedings, Volume 605, p

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Neutrino, Muon, Pion, And Other Elementary Particle Detectors, Cosmic Ray Detectors, Solid-State Detectors

Scientific paper

With the simultaneous measurement of the temperature signal of a CaWO4 absorber crystal and the scintillation light, it is possible to reject the gamma and electron background in the search for dark matter particles. We report on an alternative new light detector design for the CRESST experiment. For the light detector we use iridium/gold phase transition thermometers with a special circular structure and an Al phonon collector on a silicon substrate. With this detector an energy threshold of 22.3 eV on a 5 σ level was achieved. The light detector was tested in coincidence with a phonon measurement of a 300 g CaWO4 crystal. The phonons from the CaWO4 crystal were measured with an Ir/Au thermometer with a transition temperature of 32 mK. .

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