High impedance TES bolometers for EDELWEISS
Abstract
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.
Cite
@article{arxiv.2201.01639,
title = {High impedance TES bolometers for EDELWEISS},
author = {S. Marnieros and E. Armengaud and Q. Arnaud and C. Augier and A. Benoît and L. Bergé and J. Billard and A. Broniatowski and P. Camus and A. Cazes and M. Chapellier and F. Charlieux and M. De Jésus and L. Dumoulin and K. Eitel and J. -B. Fillipini and D. Filosofov and J. Gascon and A. Giuliani and M. Gros and Y. Jin and A. Juillard and M. Kleifges and H. Lattaud and D. Misiak and X. -F. Navick and C. Nones and E. Olivieri and C. Oriol and P. Pari and B. Paul and D. Poda and S. Rozov and T. Salagnac and V. Sanglard and L. Vagneron and E. Yakushev and A. Zolotarova},
journal= {arXiv preprint arXiv:2201.01639},
year = {2022}
}
Comments
Submitted to Journal of Low Temperature Physics, Special Issue for the 19th International Workshop on Low Temperature Detectors 19-29 July 2021 (Virtual event hold by NIST)