SMuK 2023 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 25: Instrumentation VIII

HK 25.4: Talk

Wednesday, March 22, 2023, 14:45–15:00, SCH/A.101

A normalization detector for the neutron lifetime experiment τSPECT — •Martin Engler for the tauSPECT collaboration — Department of Chemistry, Johannes Gutenberg University, Mainz

The τSPECT experiment aims to measure the free neutron lifetime, using fully magnetic storage. Neutrons with energies of ≈ 50 neV are stored in a magnetic field gradient and then counted after varying storage times. The individual measurements have to be normalized, in order to account for statistical and systematical changes in the yield of the neutron source. To monitor the flux of storable neutrons during the filling process, an in-situ neutron detector, detecting light from a ¹⁰B coated ZnS:Ag scintillator coupled to an array of silicon photomultipliers, has been designed and built.

This talk will cover the detectors design, challenges, as well as the results of the first runs.