|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'503'724
Articles rated: 2609
23 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
KATRIN background due to surface radioimpurities | | F.M. Fränkle
; A. Schaller
; C. Weinheimer
; G. Drexlin
; S. Mertens
; K. Blaum
; E. Otten
; V. Hannen
; L. Bornschein
; J. Wolf
; K. Schlösser
; F. Müller
; T. Thümmler
; F. Glück
; A. Osipowicz
; D. Hinz
; F. Harms
; P. Ranitzsch
; N. Trost
; J. Karthein
; U. Köster
; K. Johnston
; A. Lokhov
; | | Date: |
10 Nov 2020 | | Abstract: | The goal of the KArlsruhe TRItrium Neutrino (KATRIN) experiment is the
determination of the effective electron antineutrino mass with a sensitivity of
0.2 eV/c$^2$ at 90% C.L. This goal can only be achieved with a very low
background level in the order of 0.01 counts per second. A possible background
source is $alpha$-decays on the inner surface of the KATRIN Main Spectrometer.
Two $alpha$-sources, $^{223}$Ra and $^{228}$Th, were installed at the KATRIN
Main Spectrometer with the purpose of temporarily increasing the background in
order to study $alpha$-decay induced background processes. In this paper, we
present a possible background generation mechanism and measurements performed
with these two radioactive sources. Our results show a clear correlation
between $alpha$-activity on the inner spectrometer surface and background from
the volume of the spectrometer. Two key characteristics of the Main
Spectrometer background -the dependency on the inner electrode offset
potential, and the radial distribution - could be reproduced with this
artificially induced background. These findings indicate a high contribution of
$alpha$-decay induced events to the residual KATRIN background. | | Source: | arXiv, 2011.05107 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER