Muon-induced background in the KATRIN main spectrometer

Altenmuller, K.; Arenz, M.; Baek, W. -J.; Beck, M.; Beglarian, A.; Behrens, J.; Bergmann, T.; Berlev, A. I.; Dragoun, Otokar; Kovalík, Alojz; Lebeda, Ondřej; Ryšavý, Miloš; Sentkerestiová, Jana; Suchopár, Martin; Vénos, Drahoslav

doi:https://dx.doi.org/10.1016/j.astropartphys.2019.01.003

Number of the records: 1

Muon-induced background in the KATRIN main spectrometer

1.

SYSNO ASEP	0503183
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Muon-induced background in the KATRIN main spectrometer
Author(s)	Altenmuller, K. (DE) Arenz, M. (DE) Baek, W. -J. (DE) Beck, M. (DE) Beglarian, A. (DE) Behrens, J. (DE) Bergmann, T. (DE) Berlev, A. I. (RU) Dragoun, Otokar (UJF-V)_{RID, SAI} Kovalík, Alojz (UJF-V)_{RID, ORCID, SAI} Lebeda, Ondřej (UJF-V)_{RID, ORCID, SAI} Ryšavý, Miloš (UJF-V)_{RID, ORCID, SAI} Sentkerestiová, Jana (UJF-V)_SAI Suchopár, Martin (UJF-V) Vénos, Drahoslav (UJF-V)_{RID, SAI, ORCID}
Number of authors	134
Source Title	Astroparticle Physics. - : Elsevier - ISSN 0927-6505 Roč. 108, č. 3 (2019), s. 40-49
Number of pages	10 s.
Publication form	Print - P
Language	eng - English
Country	NL - Netherlands
Keywords	cosmic ray muon backgrounds ; electrostatic spectrometer ; neutrino mass
Subject RIV	BF - Elementary Particles and High Energy Physics
OECD category	Particles and field physics
R&D Projects	LTT18021 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	LM2015056 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	LTT19005 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Method of publishing	Open access
Institutional support	UJF-V - RVO:61389005
UT WOS	000459520800003
EID SCOPUS	85059838543
DOI	10.1016/j.astropartphys.2019.01.003
Annotation	The KArlsruhe TRItium Neutrino (KATRIN) experiment aims to make a model-independent determination of the effective electron antineutrino mass with a sensitivity of 0.2 eV/c(2). It investigates the kinematics of beta-particles from tritium beta-decay close to the endpoint of the energy spectrum. Because the KATRIN main spectrometer (MS) is located above ground, muon-induced backgrounds are of particular concern. Coincidence measurements with the MS and a scintillator-based muon detector system confirmed the model of secondary electron production by cosmic-ray muons inside the MS. Correlation measurements with the same setup showed that about 12% of secondary electrons emitted from the inner surface are induced by cosmic-ray muons, with approximately one secondary electron produced for every 17 muon crossings. However, the magnetic and electrostatic shielding of the MS is able to efficiently suppress these electrons, and we find that muons are responsible for less than 17% (90% confidence level) of the overall MS background.
Workplace	Nuclear Physics Institute
Contact	Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
Year of Publishing	2020
Electronic address	https://doi.org/10.1016/j.astropartphys.2019.01.003

Number of the records: 1