Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 49: Neutrino Physics without Accelerators 4

T 49.4: Vortrag

Dienstag, 22. März 2022, 17:05–17:20, T-H34

Project 8 Free Space CRES Demonstrator: Signal characteristics and matched-filter detection — •René Reimann, Florian Thomas, and Martin Fertl for the Project 8 collaboration — Institute of Physics and Excellence Cluster PRISMA+, Johannes Gutenberg University Mainz, 55099 Mainz, Germany

The Project 8 collaboration aims to measure the neutrino mass with a sensitivity of 40 meV by measuring the endpoint region of the atomic tritium beta decay spectrum using the new technology of Cyclotron Radiation Emission Spectroscopy (CRES). While the measurement principle of CRES has been successfully demonstrated using the enclosed volume of a microwave guide filled with molecular tritium or krypton, one major challenge is to scale up the source volume in order to increase the overall statistics. One promising approach is to leave the confined space of the microwave guide and detect the cyclotron radiation emitted by the electron in free space using an array of antennas. To investigate the CRES technique in free space the so called Free Space CRES Demonstrator (FSCD) is under development. Because the signal is diluted into 4π an antenna array with a high number of readout channels is required, which drastically increases the data rate. Therefore real-time processing, triggering and reconstruction are required in the FSCD. The signal characteristics are mainly dominated by the magnetic field and the antenna response. In this talk we present the influence of the magnetic field on the signal spectrum and present how matched filtering can be used to detect and reconstruct CRES signals.