13 December 2000 8 AgReO4 microcalorimeter array for the direct detection of the neutrino mass
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Abstract
We are presenting our recent developments to measure the electron antineutrino mass by studying the 187Re (beta) - spectrum end-point with high resolution thermal detectors. We will discuss the preliminary results of an array of 8 bolometers made up of AgReO4 absorbers (2.309 mg of total mass corresponding to a total 187Re active mass of about 0.905 mg of with an expected (beta) total rate of about 1.3 Hz). Their risetime of 0.7 - 1.2 ms together with their energy resolution, ranging between 21 eV and 26 eV at 1.5 KeV, should allow to set a limit of about 10 - 12 eV after one year of real time measurements.
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Angelo Alessandrello, Chiara Brofferio, Oliviero Cremonesi, Ettore Fiorini, Andrea Giuliani, Angelo Nucciotti, Maura Pavan, Gianluigi Pessina, Ezio Previtali, Monica Sisti, Luigi Zanotti, Benno Margesin, Giorgio Pigmatel, Mario Zen, Jeffrey W. Beeman, Eugene E. Haller, "8 AgReO4 microcalorimeter array for the direct detection of the neutrino mass", Proc. SPIE 4140, X-Ray and Gamma-Ray Instrumentation for Astronomy XI, (13 December 2000); doi: 10.1117/12.409136; https://doi.org/10.1117/12.409136
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