SMuK 2023 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 143: Neutrinos VII
T 143.5: Vortrag
Donnerstag, 23. März 2023, 18:30–18:45, POT/0006
Background reduction at the KATRIN experiment with an active transverse energy filter (aTEF) — •Sonja Schneidewind1,4, Kevin Gauda1,4, Kyrill Blümer1,4, Christian Gönner1,4, Volker Hannen1,4, Hans-Werner Ortjohann1,4, Wolfram Pernice2,3, Lukas Pöllitsch1,4, Richard Salomon1,4, Maik Stappers2, and Christian Weinheimer1,4 — 1Institute for Nuclear Physics, University of Münster — 2CeNTech and Physics Institute, University of Münster — 3Kirchhoff-Institute for Physics, University of Heidelberg — 4KATRIN Collaboration
The KATRIN experiment aims at the direct measurement of the incoherent sum of neutrino masses via precision endpoint spectroscopy of the tritium β-decay. Despite advances in background reduction, the elevated background level prohibits to achieve the target sensitivity of 0.2 eV/c2 (90% C.L.).
One option to reduce the background is the implementation of an active Transverse Energy Filter (aTEF, Eur. Phys. J. C 82, 922 (2022)), which makes use of the specific angular distribution of the background and discriminates electrons at the detector based on their pitch angle. The contribution presents studies concerning the potential background reduction and related sensitivity improvement from an implementation of an aTEF at KATRIN.
This work is supported by BMBF under contract number 05A20PMA and Deutsche Forschungsgemeinschaft DFG (Research Training Group GRK 2149) in Germany.