银磷化物低温热力计的首次测量
摘要
In this paper, we present the first measurement of a Gallium Arsenide crystal working as low-temperature calorimeter for direct Dark Matter (DM) searches within the DAREDEVIL (DARk-mattEr DEVIces for Low energy detection) project. In the quest for direct dark matter detection, innovative approaches to lower the detection thershold and explore the sub-GeV mass DM range, have gained high relevance in the last decade. This study presents the pioneering use of Gallium Arsenide (GaAs) as a low-temperature calorimeter for probing the dark matter-electron interaction channel. Our experimental setup features a GaAs crystal at ultralow temperature of 15 mK, coupled with a Neutron Transmutation Doped (NTD) thermal sensor for precise energy estimation. This configuration is the first step towards the detection of single electrons scattered by dark matter particles within the GaAs crystal, to significantly improve the sensitivity to low-mass dark matter candidates.
引用
@article{arxiv.2404.15741,
title = {First measurement of Gallium Arsenide as a low-temperature calorimeter},
author = {D. L. Helis and A. Melchiorre and A. Puiu and G. Benato and P. Carniti and A. Continenza and N. Di Marco and A. Ferella and C. Ferrari and F. Giannesi and C. Gotti and E. Monticone and L. Pagnanini and G. Pessina and S. Pirro and G. Profeta and M. Rajteri and P. Settembri and A. Shaikina and C. Tresca and D. Trotta},
journal= {arXiv preprint arXiv:2404.15741},
year = {2024}
}