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arxiv: 1703.05272 · v1 · pith:WBMDWD5N · submitted 2017-03-15 · physics.ins-det · nucl-ex

A pulsed, mono-energetic and angular-selective UV photo-electron source for the commissioning of the KATRIN experiment

J. Behrens , P. C.-O. Ranitzsch , M. Beck , A. Beglarian , M. Erhard , S. Groh , V. Hannen , M. Kraus
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H.-W. Ortjohann O. Rest K. Schl\"osser T. Th\"ummler K. Valerius K. Wierman J. F. Wilkerson D. Winzen M. Zacher C. Weinheimer
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classification physics.ins-det nucl-ex
keywords katrinspectrometerangular-selectivecommissioningdeterminedevelopedexperimentfilter
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The KATRIN experiment aims to determine the neutrino mass scale with a sensitivity of 200 meV/c^2 (90% C.L.) by a precision measurement of the shape of the tritium $\beta$-spectrum in the endpoint region. The energy analysis of the decay electrons is achieved by a MAC-E filter spectrometer. To determine the transmission properties of the KATRIN main spectrometer, a mono-energetic and angular-selective electron source has been developed. In preparation for the second commissioning phase of the main spectrometer, a measurement phase was carried out at the KATRIN monitor spectrometer where the device was operated in a MAC-E filter setup for testing. The results of these measurements are compared with simulations using the particle-tracking software "Kassiopeia", which was developed in the KATRIN collaboration over recent years.

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