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arXiv · 2201.11743

Background reduction at the KATRIN experiment by the shifted analysing plane configuration

Alexey Lokhov·Benedikt Bieringer·Guido Drexlin·Stephan Dyba·Kevin Gauda·Florian Fränkle·Ferenc Glück·Volker Hannen·Dominic Hinz·Susanne Mertens·Caroline Rodenbeck·Anna Schaller·Christian Weinheimer
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Abstract

The KATRIN experiment aims at measuring the electron neutrino mass with a sensitivity of 0.2 eV$/c^2$ after five years of data taking. Recently a new upper limit for the neutrino mass of 0.8 eV$/c^2$ (90% CL) was obtained. To reach the design sensitivity, a reduction of the background rate by one order of magnitude is required. The shifted analysing plane (SAP) configuration exploits a specific shaping of the electric and magnetic fields in the KATRIN main spectrometer to reduce the spectrometer background by a factor of two. We discuss the general idea of the SAP configuration and describe the main features of this novel measurement mode.

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Alexey Lokhov, Benedikt Bieringer, Guido Drexlin, Stephan Dyba, Kevin Gauda, Florian Fränkle, Ferenc Glück, Volker Hannen, Dominic Hinz, Susanne Mertens, Caroline Rodenbeck, Anna Schaller, Christian Weinheimer. 2022-01-26. Background reduction at the KATRIN experiment by the shifted analysing plane configuration. https://doi.org/10.1140/epjc%2Fs10052-022-10220-4

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