Würzburg 2018 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 31: Neutrinophysik VI

T 31.5: Vortrag

Dienstag, 20. März 2018, 17:30–17:45, Z6 - HS 0.001

Bayesian Analysis of the KATRIN Krypton Calibration Data — •Martin Ha Minh for the KATRIN collaboration — Max Planck Institute for Physics — Technical University Munich

The KArlsruhe TRItium Neutrino (KATRIN) Experiment is a large-scale experiment for the model-independent determination of the effective mass of the electrin-antineutrino with a sensitivity of 200 meV/c² (90% C.L.). It investigates the tritium β-decay close to the kinematic endpoint of the energy spectrum with a high-resolution electrostatic spectrometer (ΔE = 0.93 eV at 18.6 keV).

A gaseous ⁸³Kr source has been introduced into the KATRIN experiment in summer 2017. Due to the krypton’s emission of monoenergetic conversion electrons and its behavior similar to the tritium gas it is ideal to be used for calibration purposes. This talk discusses the analysis of this first calibration campaign based on a Bayesian approach. Special focus will be on the study of systematic effects.

This work is supported by the Max Planck Institute for Physics.