HOLMES is an experiment aiming at performing a direct measurement of the neutrino mass from the electron capture (EC) spectrum of 163Ho. In order to reach a sensitivity of the order of ∼ 1 eV/c2 on the neutrino mass, it is necessary to gather as many as 10 13 events in the 3-year projected live time of HOLMES, keeping the pileup fraction as low as 10 - 4. This is not a trivial matter when it comes to low- temperature calorimeters, which usually have a rather slow time response. At the same time, a large number of detectors need to be operated simultaneously, and hence, in order to avoid an extremely large cryogenic facility, multiplexing is required. In this contribution, I will outline the current status and perspective of HOLMES, with special care devoted to the detectors and readout system, which have currently reached their target performance
Puiu, A., Becker, D., Bennett, D., Biasotti, M., Borghesi, M., De Gerone, M., et al. (2020). Transition-Edge Sensors for HOLMES. JOURNAL OF LOW TEMPERATURE PHYSICS, 199(3-4), 716-722 [10.1007/s10909-019-02290-8].
Transition-Edge Sensors for HOLMES
Puiu A.
;Borghesi M.;Faverzani M.;Ferri E.;Giachero A.;Nucciotti A.;Pessina G.;
2020
Abstract
HOLMES is an experiment aiming at performing a direct measurement of the neutrino mass from the electron capture (EC) spectrum of 163Ho. In order to reach a sensitivity of the order of ∼ 1 eV/c2 on the neutrino mass, it is necessary to gather as many as 10 13 events in the 3-year projected live time of HOLMES, keeping the pileup fraction as low as 10 - 4. This is not a trivial matter when it comes to low- temperature calorimeters, which usually have a rather slow time response. At the same time, a large number of detectors need to be operated simultaneously, and hence, in order to avoid an extremely large cryogenic facility, multiplexing is required. In this contribution, I will outline the current status and perspective of HOLMES, with special care devoted to the detectors and readout system, which have currently reached their target performance
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