Low-Temperature Light Detectors: Neganov-Luke Amplification and Calibration
C. Isaila, C. Ciemniak, F. v. Feilitzsch, A. Gütlein, J. Kemmer, T. Lachenmaier, J. -C. Lanfranchi, S. Pfister, W. Potzel, S. Roth, M. v. Sivers, R. Strauss, W. Westphal, F. Wiest
The simultaneous measurement of phonons and scintillation light induced by incident particles in a scintillating crystal such as CaWO4 is a powerful technique for the active rejection of background induced by gamma's and beta's and even neutrons in direct Dark Matter searches. However, less than ~1% of the energy deposited in a CaWO4 crystal is detected as light. Thus, very sensitive light detectors are needed for an efficient event-by-event background discrimination. Due to the Neganov-Luke effect, the threshold of low-temperature light detectors based on semiconducting substrates can be improved significantly by drifting the photon-induced electron-hole pairs in an applied electric field. We present measurements with low-temperature light detectors based on this amplification mechanism. The Neganov-Luke effect makes it possible to improve the signal-to-noise ratio of our light detectors by a factor of ~9 corresponding to an energy threshold of ~21 eV. We also describe a method for an absolute energy calibration using a light-emitting diode.
NTL-amplified cryogenic light detectors with optically transparent electrodes
INFN, Sezione di Milano Bicocca（意大利国家核物理研究所米兰比可卡分部）；Dipartimento di Fisica ”G.Occhialini”, Università degli Studi di Milano - Bicocca（米兰比可卡大学G.奥恰利尼物理系）；INFN, Sezione di Pavia（意大利国家核物理研究所帕维亚分部）
Cryogenic light detectors with thermal signal amplification for $0νββ$ search experiments
Institut de Physique des 2 Infinis（双无穷大物理研究所）；IRFU, CEA, Université Paris-Saclay（巴黎萨克雷大学CEA IRFU）；National Research Center Kurchatov Institute（库尔恰托夫国家研究中心）；University of Milano-Bicocca（米兰比可卡大学）；INFN Sezione di Milano-Bicocca（意大利国家核物理研究所米兰比可卡分部）；University of California, Berkeley（加州大学伯克利分校）；Université Paris-Saclay, CNRS/IN2P3, IJCLab（巴黎萨克雷大学CNRS/IN2P3 IJCLab）；Laboratorio Subterráneo de Canfranc（坎弗兰克地下实验室）；Escuela Superior de Ingeniería y Tecnología, Universidad Internacional de La Rioja（拉里奥哈国际大学高等工程与技术学院）；Lawrence Berkeley National Laboratory（劳伦斯伯克利国家实验室）；Physik-Institut, University of Zürich（苏黎世大学物理研究所）
A novel mechanical design of a bolometric array for the CROSS double-beta decay experiment
CNRS/IN2P3（法国国家科学研究中心/欧洲核子研究学会）；National Research Center Kurchatov Institute（库尔恰托夫国家研究中心）；Institute for Nuclear Research of NASU（乌克兰国家科学院核物理研究所）；INFN Laboratori Nazionali del Gran Sasso（意大利国家核物理研究所大萨索国家实验室）；University College London（伦敦大学学院）
Test of $^{116}$CdWO$_4$ and Li$_2$MoO$_4$ scintillating bolometers in the CROSS underground facility with upgraded detector suspension
Univ. Grenoble Alpes, CNRS, Grenoble INP (Institute of Engineering Univ. Grenoble Alpes), SIMAP（格勒诺布尔阿尔卑斯大学、法国国家科学研究中心、格勒诺布尔理工学院（格勒诺布尔大学工程学院）、SIMAP）；National Research Center Kurchatov Institute, Kurchatov Complex of Theoretical and Experimental Physics（库尔恰托夫研究所国家研究中心、理论与实验物理库尔恰托夫综合体）；Institute for Nuclear Research of NASU（乌克兰国家科学院核物理研究所）；INFN Laboratori Nazionali del Gran Sasso（意大利国家核物理研究院格兰萨索国家实验室）；Gran Sasso Science Institute（格兰萨索科学研究所）
