The determination of the neutrino mass is still an open issue in particle physics. The calorimetric measurement of the energy released in a nuclear beta decay allows to measure all the released energy, except the fraction carried away by the neutrino: a finite neutrino mass m ν causes the energy spectrum to be truncated at Q − m ν , where Q is the transition energy. The electron capture of 163 Ho (Q ∼ 2.5 keV) results to be an ideal decay. In order to achieve enough statistics, a large number of detectors ( ∼ 10 4 ) is required. Superconducting microwave microresonators are detectors suitable for large-scale multiplexed frequency domain readout, with theoretical energy and time resolution of ∼ eV and ∼μ s. Our aim is to develop arrays of microresonator detectors applicable to the calorimetric measurement of the energy spectra of 163 Ho. Currently, a study aimed to the selection of the best design and material for the detectors is in progress. In this contribution, a comparison between the measurements (critical temperature, gap parameter, quasiparticle recombination time and X-ray energy spectra) made with stoichiometric, sub-stoichiometric TiN and Ti/TiN multilayer films are presented

Faverzani, M., Day, P., Falferi, P., Ferri, E., Giachero, A., Giordano, C., et al. (2014). Development of Superconducting Microresonators for a Neutrino Mass Experiment. JOURNAL OF LOW TEMPERATURE PHYSICS, 176(3-4), 530-537 [10.1007/s10909-013-1051-y].

Development of Superconducting Microresonators for a Neutrino Mass Experiment

FAVERZANI, MARCO
;
DAY, PETER KENNETH;FERRI, ELENA;GIACHERO, ANDREA;NUCCIOTTI, ANGELO ENRICO LODOVICO
2014

Abstract

The determination of the neutrino mass is still an open issue in particle physics. The calorimetric measurement of the energy released in a nuclear beta decay allows to measure all the released energy, except the fraction carried away by the neutrino: a finite neutrino mass m ν causes the energy spectrum to be truncated at Q − m ν , where Q is the transition energy. The electron capture of 163 Ho (Q ∼ 2.5 keV) results to be an ideal decay. In order to achieve enough statistics, a large number of detectors ( ∼ 10 4 ) is required. Superconducting microwave microresonators are detectors suitable for large-scale multiplexed frequency domain readout, with theoretical energy and time resolution of ∼ eV and ∼μ s. Our aim is to develop arrays of microresonator detectors applicable to the calorimetric measurement of the energy spectra of 163 Ho. Currently, a study aimed to the selection of the best design and material for the detectors is in progress. In this contribution, a comparison between the measurements (critical temperature, gap parameter, quasiparticle recombination time and X-ray energy spectra) made with stoichiometric, sub-stoichiometric TiN and Ti/TiN multilayer films are presented
Articolo in rivista - Articolo scientifico
Microresonators; Neutrino Mass; Holmium;
English
530
537
8
Faverzani, M., Day, P., Falferi, P., Ferri, E., Giachero, A., Giordano, C., et al. (2014). Development of Superconducting Microresonators for a Neutrino Mass Experiment. JOURNAL OF LOW TEMPERATURE PHYSICS, 176(3-4), 530-537 [10.1007/s10909-013-1051-y].
Faverzani, M; Day, P; Falferi, P; Ferri, E; Giachero, A; Giordano, C; Leduc, H; Marghesin, B; Mezzena, R; Nizzolo, R; Nucciotti, A
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/49910
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