Göttingen 2025 – scientific programme

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T: Fachverband Teilchenphysik

T 38: Neutrino Physics III

T 38.7: Talk

Tuesday, April 1, 2025, 17:45–18:00, VG 3.103

Rear Wall concepts for keV sterile neutrino search at KATRIN — •Rudolf Sack for the KATRIN collaboration — Karlsruhe Institute of Technology - KIT

From 2026 on KATRIN will search for keV sterile Neutrinos with a differential electron energy measurement of the Tritium beta decay. The unwanted effects of the Rear Wall, such as electron backscattering, are thought to be the leading systematic effect. This talk will explain the requirements for new rear wall materials and design concepts. Further the talk will highlight our most promising concepts and present our performed characterization measurements.

Keywords: Katrin; Tristan; Rear Wall; Beryllium; sterile neutrinos