Accès ouvert déclaré
2025
preprint
Innovating Bolometers' Mounting: A Gravity-Based Approach
K. Alfonso, A. Armatol, C. Augier, O Azzolini, G Bari, Andrea Barresi, D. Baudin, F. Bellini, G Benato, L. Benussi, V. Berest, M. Beretta, Manuele Bettelli, M Biassoni, J. Billard, F. Boffelli, V. Boldrini, C. Brofferio, C. Bucci, M Buchynska, J Camilleri, A Campani, Jun Cao, C Capelli, S. Capelli, V. Caracciolo, L. Cardani, P. Carniti, N. Casali, E. Celi, C. L. Chang, Marion Chapellier, H. Chen, D. Chiesa, D. Cintas, M. Clemenza, I Colantoni, S. Copello, O. Cremonesi, A. D’Addabbo, I. Dafinei, Florence De Dominicis, M de Jesus, P de Marcillac, S. Dell’Oro, S. Di Domizio, S Di Lorenzo, A. Drobizhev, Laurence Dumoulin, G. Fantini, M. El Idrissi, M. Faverzani, E Ferri, F. Ferri, F. Ferroni, E. Figueroa‐Feliciano, J. A. Formaggio, A. Franceschi, Songnian Fu, J. Gascon, S. Ghislandi, A Giachero, M. Girola, L. Gironi, A. Giuliani, P. Gorla, C. Gotti, C. Grant, P Gras, K. Han, L. Imbert, A. Juillard, G. Karapetrov, G. Keppel, H. Khalife, R Kowalski, H. Lattaud, Marc Lefevre, M Lisovenko, Ren Ping Liu, Yang Liu, P. Loaiza, Long Ma, F. Mancarella, N. Manenti, A. Mariani, L. Marini, S Marnieros, M. Lucio Martínez, Ph. Mas, D Mayer, G. Mazzitelli, Eugene P. Mazzola, Y. Mei, S. Morganti, T. Napolitano, M. Nastasi, J. A. Nikkel, C. Nones, V. Novosad, I. Nutini, T. O’Donnell, E Olivieri, M. Olmi, S Pagan, M Pageot, L. Pagnanini, D Pasciuto, L. Pattavina, M. Pavan, H. Peng, G. Pessina, V Pettinacci, C Pira, S. Pirro, O Pochon, Tomas Polakovic, S. Pozzi, E. Previtali, A Puiu, S. Puranam, S. Quitadamo, A. Rappoldi, A Ressa, R. Rizzoli, C. Rosenfeld, P. Rosier, M. Rossella, B. Schmidt, R Serino, A Shaikina, Ke Shang, V. Sharma, Vivek Kumar Singh, M. Sisti, P. Slocum, D. Speller, L. Taffarello, S. Tomassini, C. Tomei, Alfonso Torres, D Tozzi, Domenico Trotta, M. Velázquez, G. Wang, Lingling Wang, Ruinan Wang, B. Welliver, J. Wilson, Kevin J. Wilson, Fei Xie, M. Xue, Jie Yang, V. Yefremenko, Tao Zhu, A. Zolotarova, S. Zucchelli
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Résumé fourni par la source
Cryogenic calorimeters, also known as bolometers, are among the leading technologies for searching for rare events. The CUPID experiment is exploiting this technology to deploy a tonne-scale detector to search for neutrinoless double-beta decay of $^{100}$Mo. The CUPID collaboration proposed an innovative approach to assembling bolometers in a stacked configuration, held in position solely by gravity. This gravity-based assembly method is unprecedented in the field of bolometers and offers several advantages, including relaxed mechanical tolerances and simplified construction. To assess and optimize its performance, we constructed a medium-scale prototype hosting 28 Li$_2$MoO$_4$ crystals and 30 Ge light detectors, both operated as cryogenic calorimeters at the Laboratori Nazionali del Gran Sasso (Italy). Despite an unexpected excess of noise in the light detectors, the results of this test proved (i) a thermal stability better than $\pm$0.5 mK at 10 mK, (ii) a good energy resolution of Li$_2$MoO$_4$ bolometers, (6.6 $\pm$ 2.2) keV FWHM at 2615 keV, and (iii) a Li$_2$MoO$_4$ light yield measured by the closest light detector of 0.36 keV/MeV, sufficient to guarantee the particle identification requested by CUPID.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
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Sujets associés
Structural Engineering and Vibration Analysis