It has been demonstrated in the past that observing the β-decay spectrum of 187Re with microbolometers provides a suitable method to determine the mass of the electron anti-neutrino from β-endpoint measurements. In a first step, with the experiment MIBETA a sensitivity ofmνe ≤ 15 eV/c2 was achieved. To compete with the sensitivity of mνe ≤ 2.2 eV/c2 established by the Mainz/Troitsk tritium β-decay experiment and the limit of mνe ≤ 0.2 eV/c2 aimed at with KATRIN, a new experiment MARE has been initiated. As a first stage (MARE-1), 300 detectors consisting of silicon implanted thermistors, produced by NASA/GSFC, and absorbers of AgReO4 crystals will be mounted. To optimize the experimental setup, a test array was equipped with 10 AgReO4 crystals of various size and shape. The influence of the crystal quality as well as of different types of resin on rise time and energy resolution was investigated
Kraft Bermuth, S., Arnaboldi, C., Ferri, E., Kilbourne, C., Margesin, B., Mccammon, D., et al. (2008). Development and Characterization of Microcalorimeters for a Next Generation 187Re Beta-Decay Experiment. JOURNAL OF LOW TEMPERATURE PHYSICS, 151(3-4), 619-622 [10.1007/s10909-008-9715-8].
Development and Characterization of Microcalorimeters for a Next Generation 187Re Beta-Decay Experiment
ARNABOLDI, CLAUDIO;FERRI, ELENA;NUCCIOTTI, ANGELO ENRICO LODOVICO;Pessina, G;Previtali, E;SISTI, MONICA
2008
Abstract
It has been demonstrated in the past that observing the β-decay spectrum of 187Re with microbolometers provides a suitable method to determine the mass of the electron anti-neutrino from β-endpoint measurements. In a first step, with the experiment MIBETA a sensitivity ofmνe ≤ 15 eV/c2 was achieved. To compete with the sensitivity of mνe ≤ 2.2 eV/c2 established by the Mainz/Troitsk tritium β-decay experiment and the limit of mνe ≤ 0.2 eV/c2 aimed at with KATRIN, a new experiment MARE has been initiated. As a first stage (MARE-1), 300 detectors consisting of silicon implanted thermistors, produced by NASA/GSFC, and absorbers of AgReO4 crystals will be mounted. To optimize the experimental setup, a test array was equipped with 10 AgReO4 crystals of various size and shape. The influence of the crystal quality as well as of different types of resin on rise time and energy resolution was investigated
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
