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

被引:1
|
作者
De Gerone, M. [1 ]
Alpert, B. [2 ]
Becker, D. [2 ]
Bennett, D. [2 ]
Biasotti, M. [1 ,3 ]
Ceriale, V [1 ,3 ]
Dressler, R. [4 ]
Faverzani, M. [5 ,6 ]
Ferri, E. [5 ]
Fowler, J. [2 ]
Gallucci, G. [1 ]
Gard, J. [2 ]
Gatti, F. [1 ,3 ]
Giachero, A. [5 ,6 ]
J-Hays-Wehle [2 ,5 ]
Heinitz, S. [4 ]
Hilton, G. [2 ]
Koester, U. [7 ]
Lusignoli, M. [8 ,9 ]
Mates, J. [2 ]
Nucciotti, A. [5 ,6 ]
Nisi, S. [10 ]
Orlando, A. [5 ]
Pessina, G. [5 ]
Puiu, A. [5 ,6 ]
Ragazzi, S. [5 ]
Reintsema, C. [2 ]
Ribeiro Gomes, M. [11 ]
Schmidt, D. [2 ]
Schumann, D. [4 ]
Swetz, D. [2 ]
Ullom, J. [2 ]
Vale, L. [2 ]
机构
[1] Ist Nazl Fis Nucl, Sez Genova, Genoa, Italy
[2] NIST, Boulder, CO USA
[3] Univ Genoa, Dipartimento Fis, Genoa, Italy
[4] Paul Scherrer Inst, Villigen, Switzerland
[5] Ist Nazl Fis Nucl, Sez Milano Bicocca, Milan, Italy
[6] Univ Milano Bicocca, Dipartimento Fis, Milan, Italy
[7] Inst Laue Langevin, Grenoble, France
[8] Ist Nazl Fis Nucl, Sez Roma 1, I-1 Rome, Italy
[9] Univ Roma La Sapienza, Dipartimento Fis, Rome, Italy
[10] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, Assergi, Italy
[11] Univ Lisbon, Multidisciplinary Ctr Astrophys, Lisbon, Portugal
基金
欧洲研究理事会;
关键词
Neutrino mass measurement; Electron capture; Holmium; Transition edge sensors;
D O I
10.1016/j.nima.2018.10.108
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
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.
引用
收藏
页码:252 / 253
页数:2
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