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Journal of Low Temperature Physics 167 (2012) 1154-1159
Fiducial Volume of the Edelweiss Germanium Bolometers for Dark Matter Search Using Cosmogenic Activation
J. Domange1, 2, E. Armengaud2, A. Broniatowski1, G. Gerbier2
EDELWEISS Collaboration(s)

In this work, we use 10.36 and 8.98 keV X-rays originating from the decay of Ge-68 and Zn-65 which are homogeneously produced in a Ge crystal in order to evaluate the fiducial volume of a 400 g coplanar grid HP-Ge bolometers in operation in the Edelweiss-II experiment. Different energy estimators are tested on the experimental data and a fiducial fraction of (39.9 +/- 5)% is found. The results are compared to simulations taking into account the anisotropy of the electron transport in Ge.
1 :  CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
2 :  IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (ex DAPNIA)
Physique/Physique/Instrumentations et Détecteurs

Physique/Astrophysique/Cosmologie et astrophysique extra-galactique

Planète et Univers/Astrophysique/Cosmologie et astrophysique extra-galactique
Dark matter search – Germanium cryogenic detectors – Cosmogenesis – X-rays – Fiducial volume