Bochum 2018 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 44: Hauptvorträge II

HK 44.3: Invited Talk

Thursday, March 1, 2018, 12:00–12:30, Audimax

Measuring the free neutron lifetime with ultracold neutrons at TRIGA Mainz — •Dieter Ries for the tauSPECT collaboration — Institute of Nuclear Chemistry, Johannes Gutenberg University, Mainz, Germany

Ultracold Neutrons (UCN), neutrons with kinetic energies below 335 neV, provide a unique tool for fundamental neutron research with long observation times.

The τSPECT experiment, which is currently being commissioned at the pulsed UCN source of the TRIGA Mainz, aims to utilize this fact in order to precisely measure the free neutron lifetime.

In order to reduce systematic errors with respect to previous storage experiments using material bottles, τSPECT will implement 3D magnetic storage of UCN and will be able to measure both the decaying and the surviving UCN.

An introduction to UCN and their properties will be given as well as a description of the τSPECT experiment and the planned neutron lifetime measurements at the TRIGA Mainz.