320 g ionization-heat cryogenic detector for dark matter search in the EDEL WEISS experiment

The EDEL WEISS experiment is presently using for direct WIMP detection a 320g heat-and-ionization cryogenic Ge detector operated in a low-background environment in the Laboratoire Souterrain de Modane (LSM). This detector presents an increase of more than 4 times the mass of previous detectors. Calibrations of this detector are used to determine its energy resolution and fiducial volume, and to optimize the detector design for the 1 kg phase of the EDEL WEISS-I experiment. Analysis of the calibrations and characteristics of a first series of 320g-detectors are presented.