We present the design and characterization of a cryogenic phonon-sensitive 1-gram Si detector exploiting the Neganov-Trofimov-Luke effect to detect single-charge excitations. This device achieved 2.65(2)~eV phonon energy resolution when operated without a voltage bias across the crystal and a corresponding charge resolution of 0.03 electron-hole pairs at 100~V bias. With a continuous-readout data acquisition system and an offline optimum-filter trigger, we obtain a 9.2~eV threshold with a trigger rate of the order of 20~Hz. The detector's energy scale is calibrated up to 120~keV using an energy estimator based on the pulse area. The high performance of this device allows its application to different fields where excellent energy resolution, low threshold, and large dynamic range are required, including dark matter searches, precision measurements of coherent neutrino-nucleus scattering, and ionization yield measurements.
@article{arxiv.2012.12430,
title = {Design and Characterization of a Phonon-Mediated Cryogenic Particle Detector with an eV-Scale Threshold and 100 keV-Scale Dynamic Range},
author = {R. Ren and C. Bathurst and Y. Y. Chang and R. Chen and C. W. Fink and Z. Hong and N. A. Kurinsky and N. Mast and N. Mishra and V. Novati and G. Spahn and H. Meyer zu Theenhausen and S. L. Watkins and Z. Williams and M. J. Wilson and A. Zaytsev and D. Bauer and R. Bunker and E. Figueroa-Feliciano and M. Hollister and L. Hsu and P. Lukens and R. Mahapatra and N. Mirabolfathi and B. Nebolsky and M. Platt and F. Ponce and M. Pyle and T. Reynolds and T. Saab},
journal= {arXiv preprint arXiv:2012.12430},
year = {2021}
}