Status of the HOLMES detector development. di Fisica “G. Occhialini”, Univ. Milano-Bicocca,...
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HOLMES is a new experiment to directly measure the neutrino mass directly measure the neutrino mass with a sensitivity as low as 0.4 eV. HOLMES will perform a calorimetric measurement of calorimetric measurement of the energy released in the electron capture decay of the energy released in the electron capture decay of 163 163 Ho Ho (A. De Rujula and M. Lusignoli, Phys. Lett. B 118 (1982) 429). The calorimetric measurement eliminates systematic uncertainties arising from the use of external beta sources, as in experiments with beta spectrometers. HOLMES will deploy a large array of low temperature microcalorimeters with implanted 163 Ho nuclei. A. Nucciotti on behalf of the HOLMES collaboration Dip. di Fisica “G. Occhialini”, Univ. Milano-Bicocca, Italia INFN - Sezione di Milano Bicocca, Italia Status of the HOLMES Status of the HOLMES detector development detector development 163 Ho + e Ho + e – → → 163 163 Dy* + ν Dy* + ν e A EC EC = 300 Bq = 300 Bq f pp = 3x10 -4 ΔE = 1 eV τ = 1 μs mid-term prototype 2016 full scale HOLMES 2017 16 channels t M = 1 month 1000 channels t M = 3 years ERC-ADG 2013 ERC-ADG 2013 PI: PI: Stefano Ragazzi Stefano Ragazzi Host Institution: INFN Host Institution: INFN
Transcript of Status of the HOLMES detector development. di Fisica “G. Occhialini”, Univ. Milano-Bicocca,...
HOLMES is a new experiment to directly measure the neutrino massdirectly measure the neutrino mass with a sensitivity as low as 0.4 eV. HOLMES will perform a calorimetric measurement of calorimetric measurement of the energy released in the electron capture decay of the energy released in the electron capture decay of 163163HoHo (A. De Rujula and M.
Lusignoli, Phys. Lett. B 118 (1982) 429). The calorimetric measurement eliminates systematic uncertainties arising from the use of external beta sources, as in
experiments with beta spectrometers. HOLMES will deploy a large array of low temperature microcalorimeters with implanted 163Ho nuclei.
A. Nucciotti on behalf of the HOLMES collaborationDip. di Fisica “G. Occhialini”, Univ. Milano-Bicocca, Italia
INFN - Sezione di Milano Bicocca, Italia
Status of the HOLMESStatus of the HOLMESdetector developmentdetector development
163Ho + eHo + e–– → → 163163Dy* + νDy* + νee
AAECEC= 300 Bq= 300 Bqfpp = 3x10-4
ΔE = 1 eVτ = 1 μs
mid-term prototype2016
full scale HOLMES2017
16 channelstM= 1 month
1000 channelstM= 3 years
ERC-ADG 2013ERC-ADG 2013PI: PI: Stefano RagazziStefano Ragazzi
Host Institution: INFNHost Institution: INFN
GHz LC resonator fi
flux ramp
bias
f1 f2 f3
MHz flux ramp modulation framp
framp→ fsampl
● TES detectors R&D
● microwave readout and signal multiplexing
● pile-up discrimination algorithms for optimal time resolution
Δt = 3.8 μs
OF
WF
TES163163HoHoAuAu
A. Nucciotti, Status of the HOLMES detector development
