8 AgReO4 microcalorimeter array for the direct detection of the neutrino mass

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

doi:10.1117/12.409136

13 December 2000 8 AgReO₄ microcalorimeter array for the direct detection of the neutrino mass

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

Author Affiliations +

Proceedings Volume 4140, X-Ray and Gamma-Ray Instrumentation for Astronomy XI; (2000) https://doi.org/10.1117/12.409136
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

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, and 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); https://doi.org/10.1117/12.409136

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