Florian Fraenkle

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Measurements with the KATRIN pre-spectrometer

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The KArlsruhe TRItium Neutrino (KATRIN) experiment is a next generation, model independent, large scale tritium-beta-decay experiment to determine the mass of the anti-electron neutrino by investigating the kinematics of tritium beta decay with a sensitivity of 0.2 eV/c². The measurement setup consists of a high luminosity windowless gaseous molecular tritium source (WGTS), a differential and cryogenic pumped electron transport and tritium retention section, a tandem spectrometer section (pre-spectrometer and main spectrometer) for energy analysis, followed by a detector system for counting transmitted beta decay electrons. Currently the pre-spectrometer is operated in a test setup to investigate the new electro-magnetic design of the KATRIN spectrometers including transmission characteristics and background performance. The talk will give and introduction to the KATRIN experiment and will present the latest results of the pre-spectrometer test setup.