Dark Matter Search in the EDELWEISS Experiment
/ Authors
M. Chapellier, A. Benoȋt, L. Bergé, A. Broniatowski, B. Chambon, G. Chardin, P. Charvin, M. Jésus, P. D. Stefano, D. Drain
and 24 more authors
L. Dumoulin, J. Gascon, G. Gerbier, C. Goldbach, M. Goyot, M. Gros, J. Hadjout, S. Hervé, A. Juillard, A. Lesquen, M. Loidl, J. Mallet, S. Marnieros, O. Martineau, N. Mirabolfathi, L. Miramonti, L. Mosca, X. Navick, G. Nollez, P. Pari, C. Pastor, E. Simon, M. Stern, L. Vagneron
/ Abstract
Abstract The EDELWEISS collaboration is performing a direct search for WIMP dark matter in a low-background environment in the Laboratoire Souterrain de Modane. Two series of results obtained with 320 g heat-and-ionization detectors are presented. During the 4.53 effective exposure of the year 2000 run, no nuclear events are observed in the fiducial volume in the 30–200 keV energy range. The central value of the signal reported by the DAMA experiment NaI1–4 is thus excluded at 90% CL. The present 2002 setup with three detectors is described and improved calibration performances are presented. The R&D program and the EDELWEISS-II stage of the experiment are also briefly described.