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arxiv: 2011.11726 · v2 · pith:5WB5TLCPnew · submitted 2020-11-23 · ⚛️ physics.ins-det

Novel technique for the study of pile-up events in cryogenic bolometers

(CUPID Collaboration) A. Armatol , E. Armengaud , W. Armstrong , C. Augier , F. T. Avignone III , O. Azzolini , A. Barabash , G. Bari
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A. Barresi D. Baudin F. Bellini G. Benato M. Beretta L. Berg\'e M. Biassoni J. Billard V. Boldrini A. Branca C. Brofferio C. Bucci J. Camilleri S. Capelli L. Cappelli L. Cardani P. Carniti N. Casali A. Cazes E. Celi C. Chang M. Chapellier A. Charrier D. Chiesa M. Clemenza I. Colantoni F. Collamati S. Copello O. Cremonesi R. J. Creswick A. Cruciani A. D'Addabbo G. D'Imperio I. Dafinei F. A. Danevich M. de Combarieu M. De Jesus P. de Marcillac S. Dell'Oro S. Di Domizio V. Domp\`e A. Drobizhev L. Dumoulin G. Fantini M. Faverzani E. Ferri F. Ferri F. Ferroni E. Figueroa-Feliciano J. Formaggio A. Franceschi C. Fu S. Fu B. K. Fujikawa J. Gascon A. Giachero L. Gironi A. Giuliani P. Gorla C. Gotti P. Gras M. Gros T. D. Gutierrez K. Han E. V. Hansen K. M. Heeger D. L. Helis H. Z. Huang R. G. Huang L. Imbert J. Johnston A. Juillard G. Karapetrov G. Keppel H. Khalife V. V. Kobychev Yu. G. Kolomensky S. Konovalov Y. Liu P. Loaiza L. Ma M. Madhukuttan F. Mancarella R. Mariam L. Marini S. Marnieros M. Martinez R. H. Maruyama B. Mauri D. Mayer Y. Mei S. Milana D. Misiak T. Napolitano M. Nastasi X. F. Navick J. Nikkel R. Nipoti S. Nisi C. Nones E. B. Norman V. Novosad I. Nutini T. O'Donnell E. Olivieri C. Oriol J. L. Ouellet S. Pagan C. Pagliarone L. Pagnanini P. Pari L. Pattavina B. Paul M. Pavan H. Peng G. Pessina V. Pettinacci C. Pira S. Pirro D. V. Poda T. Polakovic O. G. Polischuk S. Pozzi E. Previtali A. Puiu A. Ressa R. Rizzoli C. Rosenfeld C. Rusconi V. Sanglard J. Scarpaci B. Schmidt V. Sharma V. Shlegel V. Singh M. Sisti D. Speller P. T. Surukuchi L. Taffarello O. Tellier C. Tomei V. I. Tretyak A. Tsymbaliuk M. Velazquez K. J. Vetter S. L. Wagaarachchi G. Wang L. Wang B. Welliver J. Wilson K. Wilson L. A. Winslow M. Xue L. Yan J. Yang V. Yefremenko V. Yumatov M. M. Zarytskyy J. Zhang A. Zolotarova S. Zucchelli
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classification ⚛️ physics.ins-det
keywords pile-upeventstimeindividualtechniquebolometerscryogenicdecay
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Precise characterization of detector time resolution is of crucial importance for next-generation cryogenic-bolometer experiments searching for neutrinoless double-beta decay, such as CUPID, in order to reject background due to pile-up of two-neutrino double-beta decay events. In this paper, we describe a technique developed to study the pile-up rejection capability of cryogenic bolometers. Our approach, which consists of producing controlled pile-up events with a programmable waveform generator, has the benefit that we can reliably and reproducibly control the time separation and relative energy of the individual components of the generated pile-up events. The resulting data allow us to optimize and benchmark analysis strategies to discriminate between individual and pile-up pulses. We describe a test of this technique performed with a small array of detectors at the Laboratori Nazionali del Gran Sasso, in Italy; we obtain a 90% rejection efficiency against pulser-generated pile-up events with rise time of ~15ms down to time separation between the individual events of about 2ms.

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