Identification of backgrounds in the EDELWEISS-I dark matter search experiment
/ Authors
S. Fiorucci, A. Benoit, L. Bergé, J. Blümer, A. Broniatowski, B. Censier, A. Chantelauze, M. Chapellier, G. Chardin, Stéphane Collin
and 29 more authors
X. Defay, M. Jésus, H. Deschamps, P. D. Stefano, Y. Dolgorouky, L. Dumoulin, K. Eitel, M. Fesquet, J. Gascon, G. Gerbier, C. Goldbach, M. Gros, M. Horn, A. Juillard, R. Lemrani, A. Lesquen, A. Lubashevskiy, M. Luca, S. Marnieros, L. Mosca, X. Navick, G. Nollez, E. Olivieri, P. Pari, V. Sanglard, L. Schoeffel, F. Schwamm, M. Stern, E. Yakushev
/ Abstract
Abstract This paper presents our interpretation and understanding of the different backgrounds in the EDELWEISS-I data sets. We analyze in detail the several populations observed, which include gammas, alphas, neutrons, thermal sensor events and surface events, and try to combine all data sets to provide a coherent picture of the nature and localization of the background sources. In light of this interpretation, we draw conclusions regarding the background suppression scheme for the EDELWEISS-II phase.
Journal: Astroparticle Physics