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Particle discrimination in a NaI crystal using the COSINUS remote TES design

Fuente: arXiv

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Bibliographic Details
Main Authors:	COSINUS Collaboration, Angloher, G., Bharadwaj, M. R., Dafinei, I., Di Marco, N., Einfalt, L., Ferroni, F., Fichtinger, S., Filipponi, A., Frank, T., Friedl, M., Fuss, A., Ge, Z., Heikinheimo, M., Hughes, M. N., Huitu, K., Kellermann, M., Maji, R., Mancuso, M., Pagnanini, L., Petricca, F., Pirro, S., Pröbst, F., Profeta, G., Puiu, A., Reindl, F., Schäffner, K., Schieck, J., Schmiedmayer, D., Schwertner, C., Stahlberg, M., Stendhal, A., Stukel, M., Tresca, C., Wagner, F., Yue, S., Zema, V., Zhu, Y., Bento, A., Canonica, L., Garai, A.
Format:	Preprint
Published:	2023
Subjects:	Instrumentation and Detectors Cosmology and Nongalactic Astrophysics
Online Access:	Acceder al recurso
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_version_	1866913411005153280
author	COSINUS Collaboration Angloher, G. Bharadwaj, M. R. Dafinei, I. Di Marco, N. Einfalt, L. Ferroni, F. Fichtinger, S. Filipponi, A. Frank, T. Friedl, M. Fuss, A. Ge, Z. Heikinheimo, M. Hughes, M. N. Huitu, K. Kellermann, M. Maji, R. Mancuso, M. Pagnanini, L. Petricca, F. Pirro, S. Pröbst, F. Profeta, G. Puiu, A. Reindl, F. Schäffner, K. Schieck, J. Schmiedmayer, D. Schwertner, C. Stahlberg, M. Stendhal, A. Stukel, M. Tresca, C. Wagner, F. Yue, S. Zema, V. Zhu, Y. Bento, A. Canonica, L. Garai, A.
author_facet	COSINUS Collaboration Angloher, G. Bharadwaj, M. R. Dafinei, I. Di Marco, N. Einfalt, L. Ferroni, F. Fichtinger, S. Filipponi, A. Frank, T. Friedl, M. Fuss, A. Ge, Z. Heikinheimo, M. Hughes, M. N. Huitu, K. Kellermann, M. Maji, R. Mancuso, M. Pagnanini, L. Petricca, F. Pirro, S. Pröbst, F. Profeta, G. Puiu, A. Reindl, F. Schäffner, K. Schieck, J. Schmiedmayer, D. Schwertner, C. Stahlberg, M. Stendhal, A. Stukel, M. Tresca, C. Wagner, F. Yue, S. Zema, V. Zhu, Y. Bento, A. Canonica, L. Garai, A.
contents	The COSINUS direct dark matter experiment situated at Laboratori Nazionali del Gran Sasso in Italy is set to investigate the nature of the annually modulating signal detected by the DAMA/LIBRA experiment. COSINUS has already demonstrated that sodium iodide crystals can be operated at mK temperature as cryogenic scintillating calorimeters using transition edge sensors, despite the complication of handling a hygroscopic and low melting point material. With results from a new COSINUS prototype, we show that particle discrimination on an event-by-event basis in NaI is feasible using the dual-channel readout of both phonons and scintillation light. The detector was mounted in the novel remoTES design and operated in an above-ground facility for 9.06 g$\cdot$d of exposure. With a 3.7 g NaI crystal, e$^-$/$γ$ events could be clearly distinguished from nuclear recoils down to the nuclear recoil energy threshold of 15 keV.
format	Preprint
id	arxiv_https___arxiv_org_abs_2307_11066
institution	arXiv
publishDate	2023
record_format	arxiv
spellingShingle	Particle discrimination in a NaI crystal using the COSINUS remote TES design COSINUS Collaboration Angloher, G. Bharadwaj, M. R. Dafinei, I. Di Marco, N. Einfalt, L. Ferroni, F. Fichtinger, S. Filipponi, A. Frank, T. Friedl, M. Fuss, A. Ge, Z. Heikinheimo, M. Hughes, M. N. Huitu, K. Kellermann, M. Maji, R. Mancuso, M. Pagnanini, L. Petricca, F. Pirro, S. Pröbst, F. Profeta, G. Puiu, A. Reindl, F. Schäffner, K. Schieck, J. Schmiedmayer, D. Schwertner, C. Stahlberg, M. Stendhal, A. Stukel, M. Tresca, C. Wagner, F. Yue, S. Zema, V. Zhu, Y. Bento, A. Canonica, L. Garai, A. Instrumentation and Detectors Cosmology and Nongalactic Astrophysics The COSINUS direct dark matter experiment situated at Laboratori Nazionali del Gran Sasso in Italy is set to investigate the nature of the annually modulating signal detected by the DAMA/LIBRA experiment. COSINUS has already demonstrated that sodium iodide crystals can be operated at mK temperature as cryogenic scintillating calorimeters using transition edge sensors, despite the complication of handling a hygroscopic and low melting point material. With results from a new COSINUS prototype, we show that particle discrimination on an event-by-event basis in NaI is feasible using the dual-channel readout of both phonons and scintillation light. The detector was mounted in the novel remoTES design and operated in an above-ground facility for 9.06 g$\cdot$d of exposure. With a 3.7 g NaI crystal, e$^-$/$γ$ events could be clearly distinguished from nuclear recoils down to the nuclear recoil energy threshold of 15 keV.
title	Particle discrimination in a NaI crystal using the COSINUS remote TES design
topic	Instrumentation and Detectors Cosmology and Nongalactic Astrophysics
url	https://arxiv.org/abs/2307.11066