Pulse shape discrimination in CUPID-Mo using principal component analysis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A90107%2F21%3A00357717" target="_blank" >RIV/68407700:90107/21:00357717 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1088/1748-0221/16/03/P03032" target="_blank" >https://doi.org/10.1088/1748-0221/16/03/P03032</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1748-0221/16/03/P03032" target="_blank" >10.1088/1748-0221/16/03/P03032</a>

Result language
angličtina
Original language name
Pulse shape discrimination in CUPID-Mo using principal component analysis
Original language description
CUPID-Mo is a cryogenic detector array designed to search for neutrinoless double-beta decay (0 nu beta beta) of Mo-100. It uses 20 scintillating Mo-100-enriched Li2MoO4 bolometers instrumented with Ge light detectors to perform active suppression of alpha backgrounds, drastically reducing the expected background in the 0 nu beta beta signal region. As a result, pileup events and small detector instabilities that mimic normal signals become non-negligible potential backgrounds. These types of events can in principle be eliminated based on their signal shapes, which are different from those of regular bolometric pulses. We show that a purely data-driven principal component analysis based approach is able to filter out these anomalous events, without the aid of detector response simulations.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10304 - Nuclear physics

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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