Abstract
The status of the EDELWEISS Dark Matter Search Experiment is presented. In this experiment, nuclear recoils induced by elastic collisions with WIMPs from the galactic halo are identified in low-temperature Ge detectors where the ratio of the heat and ionization signals provides an event-by-event discrimination of nuclear recoils from the dominant background from γ-ray interactions. Results obtained in the low-background environment of the Modane Underground Laboratory (LSM) with 320 g detectors are presented: in the first 2000 run, no nuclear events are observed in the fiducial volume in the 30–200 keV energy range in an effective exposure of 4.5 kg.day leading to the exclusion of the upper part of the DAMA region and of its central value. The present 2002 setup with three bolometers is described and improved calibration performances are presented. Prospects for the second stage of the experiment, EDELWEISS-II, using an innovative reversed cryostat allowing data taking with 120 detectors, and recent results of the R and D, are also briefly described.
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Juillard, A. et al. (2002). Dark Matter Search in the EDELWEISS Experiment. In: Klapdor-Kleingrothaus, H.V., Viollier, R.D. (eds) Dark Matter in Astro- and Particle Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-55739-2_47
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DOI: https://doi.org/10.1007/978-3-642-55739-2_47
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