Status of the EDELWEISS experiment.

Details Status of the EDELWEISS experiment. Status of the EDELWEISS experiment.

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998phr...307..297d&link_type=abstract

Physics Reports, Vol. 307, No. 1 - 4, p. 297 - 300

Physics

6

Dark Matter: Detectors

Scientific paper

The status of the EDELWEISS experiment, installed in the Frejus tunnel, is presented. In its first stage, the experiment uses a 70 g high purity Ge bolometer with heat-ionization discrimination. Based on physics data, gamma and neutron calibrations, the influence of inverse bias voltage (-2 and -6 V) on incomplete surface charge collection, which limits at present the performances of these detectors, is presented. Analysing runs with a total exposure of 1.17 kg×day after cuts, an upper limit of 0.6 event/day kg keV at 90% confidence level in the 12 - 70 keV recoil energy interval is obtained. Planned upgrades are summarized.

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