Würzburg 2018 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 55: Neutrinophysik VII

T 55.2: Vortrag

Mittwoch, 21. März 2018, 16:45–17:00, Z6 - HS 0.001

Analysis of the first Krypton-83m KATRIN Data — •Lisa Schlüter for the KATRIN collaboration — Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), Föhringer Ring 6, 80805 München

The KArlsruhe TRItium Neutrino (KATRIN) experiment is designed to determine the effective mass of the electron-antineutrino with an sensitivity of 200 meV/c² (90% C.L.) in a direct and model-independent way. The neutrino mass can be inferred from the shape of the endpoint region of the tritium β-decay spectrum, which is measured using a MAC-E filter and a Windowless Gaseous Tritium Source (WGTS). For calibration purposes and the investigation of systematic effects, in July 2017 the WGTS was operated in the Krypton mode, in which well characterized gaseous ^83mKr is filled in the WGTS. ^83mKr emits electrons via inner conversion in the few tens of keV range and with a natural line width in the eV range. This talk presents an analysis of the KATRIN Krypton run, including systematic effects based on the covariance matrix approach, using the Samak simulation analysis package.