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Communication Dans Un Congrès Année : 2023

High impedance TES bolometers for EDELWEISS

P. Camus
  • Fonction : Auteur
K. Eitel
  • Fonction : Auteur

Résumé

The EDELWEISS collaboration aims for direct detection of light dark matter using germanium cryogenic detectors with low threshold phonon sensor technologies and efficient charge readout designs. We describe here the development of Ge bolometers equipped with high impedance thermistors based on a NbxSi1-x TES alloy. High aspect ratio spiral designs allow the TES impedance to match with JFET or HEMT front-end amplifiers. We detail the behavior of the superconducting transition properties of these sensors and the detector optimization in terms of sensitivity to out-of-equilibrium phonons. We report preliminary results of a 200 g Ge detector that was calibrated using 71Ge activation by neutrons at the LSM underground laboratory.

Dates et versions

hal-03537041 , version 1 (20-01-2022)

Identifiants

Citer

S. Marnieros, E. Armengaud, Q. Arnaud, C. Augier, A. Benoît, et al.. High impedance TES bolometers for EDELWEISS. 19th International Workshop on Low Temperature Detectors, Jul 2021, Online Conference, United States. pp.214-219, ⟨10.1007/s10909-022-02899-2⟩. ⟨hal-03537041⟩
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