arXiv subjects

Carlo Bucci

Publications and source records attributed to Carlo Bucci.

4 recordsLinked to original sources

arXiv2023

LUCE: A milli-Kelvin calorimeter experiment to study the electron capture of 176Lu

The LUCE (LUtetium sCintillation Experiment) project will search for the 176Lu electron capture based on a milli-Kelvin calorimetric approach. This decay is of special interest in the field of nuclear structure, with implications for the s-process and for a better comprehension of the nuclear matrix elements of neutrinoless double beta decay (0ν\b{eta}\b{eta}) and two-neutrino double beta decay (2ν\b{eta}\b{eta}). Possible impacts also include the development of a new class of coherent elastic neutrino-nucleus scattering (CEνNS) and spin-dependent (independent) dark matter detectors. We report on the current status and design of a novel detector cryogenic-module for the measurement of the electron capture and detail a future measurement plan.

physics.ins-det↗

arXiv2021

An automated system to define the optimal operating settings of cryogenic calorimeters

Cryogenic macro-calorimeters instrumented with NTD thermistors have been developed for several decades. The choice of the optimal bias current is crucial for a proper operation of these detectors, both in terms of energy resolution and stability. In this paper we present a set of automatic measurements and analysis procedures for the characterization and optimization of the working configuration of the NTD thermistors. The presented procedures were developed for CUORE, an array of 988 cryogenic macro-calorimeters instrumented with NTD thermistors that has been taking data since 2017. These procedures made it possible to characterize a large number of detectors in a reliable way. They are suitable enough to be used also in other large arrays of cryogenic detectors, such as CUPID.

physics.ins-det↗

arXiv2021

Modelling the shape of thermal pulses from low temperature detectors

Low temperature detectors are nowadays a technology widely used for rare events studies, such as the search for dark matter candidates and neutrino-less double beta decay. The convolution of the thermal and electrical response of these detectors results in pulses with different shapes depending on the materials, dimensions and operating conditions of the thermal sensors. It appears crucial to obtain a good description of the pulse shape, in order to possibly understand the several contributions in the thermal pulse formation. In this work, we present a general approach which allows us to model the shape of thermal pulses from different low temperature detectors.

physics.ins-det↗

arXiv2011

Rejection of Surface Background in Thermal Detectors

Thermal detectors have recently achieved a leading position in the fields of neutrinoless double beta decay and dark matter searches thanks to excellent energy resolution and numerous absorber material choices. These detectors operate at temperatures of a few mK and do not have dead layers. Contaminations on the surface of faced materials have thus to be taken into account as sources of background. We propose a scintillation-based approach for rejecting surface background and discuss the innovative application of this technique in non-scintillating bolometric detectors.

physics.ins-det↗