The current status of "Troitsk nu-mass" experiment in search for sterile neutrino

被引：26

作者：

Abdurashitov, D. N. ^{[1
]}

Belesev, A. I. ^{[1
]}

Berlev, A. I. ^{[1
]}

Chernov, V. G. ^{[1
]}

Geraskin, E. V. ^{[1
]}

Golubev, A. A. ^{[1
]}

Koroteev, G. A. ^{[1
,2
]}

Likhovid, N. A. ^{[1
]}

Lokhov, A. A. ^{[1
]}

Markin, A. I. ^{[1
]}

Nozik, A. A. ^{[1
,2
]}

Parfenov, V. I. ^{[1
]}

Skasyrskaya, A. K. ^{[1
]}

Pantuev, V. S. ^{[1
]}

Titov, N. A. ^{[1
]}

Tkachev, I. I. ^{[1
]}

Tkachov, F. V. ^{[1
]}

Zadorozhny, S. V. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

[2] Moscow Inst Phys & Technol, Dolgoprudnyi, Russia

来源：

JOURNAL OF INSTRUMENTATION | 2015年 / 10卷

基金：

俄罗斯基础研究基金会;

关键词：

Spectrometers; Large detector systems for particle and astroparticle physics; HEAVY NEUTRINOS; BETA-SPECTRUM; ADMIXTURE; LIMITS;

D O I：

10.1088/1748-0221/10/10/T10005

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We propose a new experiment to search for a sterile neutrino in a few keV mass range at the "Troitsk nu-mass" facility. The expected signature corresponds to a kink in the electron energy spectrum in tritium beta-decay. The new goal compared to our previous experiment will be precision spectrum measurements well below end point. The experimental installation consists of a windowless gaseous tritium source and a high resolution electromagnetic spectrometer. We estimate that the current bounds on the sterile neutrino mixing parameter can be improved by an order of magnitude in the mass range under 5 keV without major upgrade of the existing equipment. Upgrades of calibration, data acquisition and high voltage systems will allow to improve the bounds by another order of magnitude.

引用

页数：16

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