Technical design and commissioning of the KATRIN large-volume air coil system

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ID: 116672
2018
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Abstract
The KATRIN experiment is a next-generation direct neutrino mass experiment with a sensitivity of 0.2 eV (90% C.L.) to the effective mass of the electron neutrino. It measures the tritium β-decay spectrum close to its endpoint with a spectrometer based on the MAC-E filter technique. The β-decay electrons are guided by a magnetic field that operates in the mT range in the central spectrometer volume; it is fine-tuned by a large-volume air coil system surrounding the spectrometer vessel. The purpose of the system is to provide optimal transmission properties for signal electrons and to achieve efficient magnetic shielding against background. In this paper we describe the technical design of the air coil system, including its mechanical and electrical properties. We outline the importance of its versatile operation modes in background investigation and suppression techniques. We compare magnetic field measurements in the inner spectrometer volume during system commissioning with corresponding simulations, which allows to verify the system's functionality in fine-tuning the magnetic field configuration. This is of major importance for a successful neutrino mass measurement at KATRIN.
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wüstling2018journaltechnical Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors M. Erhard,Jan Behrens,S. Bauer,A. Beglarian,R. Berendes,G. Drexlin,F. Glück,R. Gumbsheimer,J. Hergenhan,B. Leiber,S. Mertens,A. Osipowicz,P. Plischke,J. Reich,T. Thümmler,N. Wandkowsky,Christian Weinheimer,S. Wüstling;M. Erhard;Jan Behrens;S. Bauer;A. Beglarian;R. Berendes;G. Drexlin;F. Glück;R. Gumbsheimer;J. Hergenhan;B. Leiber;S. Mertens;A. Osipowicz;P. Plischke;J. Reich;T. Thümmler;N. Wandkowsky;Christian Weinheimer;S. Wüstling;
Journal journal of instrumentation
Year 2018
DOI
10.1088/1748-0221/13/02/p02003
URL
https://sciprofiles.com/publication/view/d8140f322261ab55789e41412fe27642
Keywords
magnetic field katrin neutrino mac air coil system technical design volume air

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