Skip to Main content Skip to Navigation
Journal articles

Voltage-Assisted Calorimetric Detection of Gamma Interactions in a Prototype Cryogenic Ge Detector of the EDELWEISS Collaboration for Dark Matter Search

A. Broniatowski 1 M.-C. Piro 1 S. Marnieros 1 L. Berge 2 L. Dumoulin 1 M. Chapellier 1
1 CSNSM PS1 - Centre de Sciences Nucléaires et de Sciences de la Matière
2 CSNSM INSTRU
CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière
Abstract : As a part of an R&D program to improve the sensitivity of its detectors to low-mass (10 GeV) weakly interacting massive particles, the Edelweiss dark matter collaboration is developing cryogenic ionization-and-heat coplanar grid germanium detectors, operated in a high-bias mode where advantage is taken of the voltage-assisted amplification of the ionization signals for enhanced sensitivity to low-energy (a few keV) interactions. First results of calibration experiments are presented for a 200 g prototype detector, capable of sustaining collection voltages up to 180 V with a corresponding gain of 60 in the heat measurement channel for electron recoil interactions. Event populations are analyzed based on ionization and heat data and on computer modeling of the detector signals, and a tentative interpretation of the results for the heat resolution is presented, involving athermal ballistic phonon losses in the device with consequent fluctuations in the thermometer response to the energy deposit of a particle.
Keywords : Dark matter Germanium cryogenic detector Neganov-Luke effect TEMPERATURES GERMANIUM
Document type :
Journal articles
Complete list of metadatas
http://hal.in2p3.fr/in2p3-01389595
Contributor : Emilie Bonnardel <>
Submitted on : Friday, October 28, 2016 - 4:56:42 PM
Last modification on : Wednesday, September 16, 2020 - 5:45:46 PM

Identifiers

Collections

IN2P3 | CSNSM | CNRS

Citation

A. Broniatowski, M.-C. Piro, S. Marnieros, L. Berge, L. Dumoulin, et al.. Voltage-Assisted Calorimetric Detection of Gamma Interactions in a Prototype Cryogenic Ge Detector of the EDELWEISS Collaboration for Dark Matter Search. Journal of Low Temperature Physics, Springer Verlag (Germany), 2016, 184 (1-2), pp.330-335. ⟨10.1007/s10909-016-1471-6⟩. ⟨in2p3-01389595⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

148