Gamma-induced background in the KATRIN main spectrometer
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F19%3A00509890" target="_blank" >RIV/61389005:_____/19:00509890 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1140/epjc/s10052-019-7320-4" target="_blank" >https://doi.org/10.1140/epjc/s10052-019-7320-4</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1140/epjc/s10052-019-7320-4" target="_blank" >10.1140/epjc/s10052-019-7320-4</a>
Alternative languages
Result language
angličtina
Original language name
Gamma-induced background in the KATRIN main spectrometer
Original language description
he KATRIN experiment aims to measure the effective electron antineutrino mass m nu over bar e with a sensitivity of 0.2eV/c2 using a gaseous tritium source combined with the MAC-E filter technique. A low background rate is crucial to achieving the proposed sensitivity, and dedicated measurements have been performed to study possible sources of background electrons. In this work, we test the hypothesis that gamma radiation from external radioactive sources significantly increases the rate of background events created in the main spectrometer (MS) and observed in the focal-plane detector. Using detailed simulations of the gamma flux in the experimental hall, combined with a series of experimental tests that artificially increased or decreased the local gamma flux to the MS, we set an upper limit of 0.006count/s (90% C.L.) from this mechanism. Our results indicate the effectiveness of the electrostatic and magnetic shielding used to block secondary electrons emitted from the inner surface of the MS.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
European Physical Journal C
ISSN
1434-6044
e-ISSN
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Volume of the periodical
79
Issue of the periodical within the volume
9
Country of publishing house
DE - GERMANY
Number of pages
12
Pages from-to
807
UT code for WoS article
000487944300001
EID of the result in the Scopus database
2-s2.0-85073218479