Probing the absolute neutrino mass scale with 163Ho: The HOLMES project

De Gerone, M.; Alpert, B.; Becker, D.; Bennett, D.; Biasotti, M.; Ceriale, V.; Dressler, R.; Faverzani, M.; Ferri, E.; Fowler, J.; Gallucci, G.; Gard, J.; Gatti, F.; Giachero, A.; Hays-Wehle, J.; Heinitz, S.; Hilton, G.; Koester, U.; Lusignoli, M.; Mates, J.; Nucciotti, A.; Nisi, S.; Orlando, A.; Pessina, G.; Puiu, A.; Ragazzi, S.; Reintsema, C.; Ribeiro Gomes, M.; Schmidt, D.; Schumann, D.; Swetz, D.; Ullom, J.; Vale, L.

doi:10.1016/j.nima.2018.10.108

The HOLMES project aims to directly measure the nu mass down to the eV scale using the electron capture decay (EC) of Ho-163. It will perform a precise calorimetric measurement of the end-point of the Ho energy spectrum looking for the deformation caused by a finite nu mass. The choice of Ho-163 as source is driven by the very low Q-value of the EC reaction, which allows for high sensitivity with low activities (O(10(2))Bq/detector), thus reducing the pile-up probability. A large array made by thousands of transition edge sensors based micro-calorimeters will be used. The calorimetric approach eliminates systematic uncertainties arising from the use of an external beta source, and minimizes the effect of the atomic de-excitation process. The commissioning of the first implanted sub-array is scheduled for the end of 2018. It will provide useful data about the EC decay of Ho-163 together with a first limit on nu mass.

Titolo:	Probing the absolute neutrino mass scale with 163Ho: The HOLMES project
Autori:	De Gerone M. Alpert B. Becker D. Bennett D. Biasotti M. Ceriale V. Dressler R. Faverzani M. Ferri E. Fowler J. Gallucci G. Gard J. Gatti F. Giachero A. Hays-Wehle J. Heinitz S. Hilton G. Koester U. Lusignoli M. Mates J. Nucciotti A. Nisi S. Orlando A. Pessina G. PUIU, PAUL ANDREI Ragazzi S. Reintsema C. Ribeiro Gomes M. Schmidt D. Schumann D. Swetz D. Ullom J. Vale L. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2019
Rivista:	NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT
Handle:	http://hdl.handle.net/20.500.12571/7563
Appare nelle tipologie:	1.2 Recensione in rivista

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