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

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The KATRIN experiment aims at measuring the electron neutrino mass with a sensitivity of 0.2 eV/c2 after 5 years of data taking. Recently a new upper limit for the neutrino mass of 0.8 eV/c2 (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.

Original languageEnglish
Article number258
JournalEuropean Physical Journal C
Volume82
Issue number3
DOIs
StatePublished - Mar 2022

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