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arXiv · 1703.05272

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·H. -W. Ortjohann·O. Rest·K. Schlösser·T. Thümmler·K. Valerius·K. Wierman·J. F. Wilkerson·D. Winzen·M. Zacher·C. Weinheimer
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Abstract

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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J. Behrens, P. C. -O. Ranitzsch, M. Beck, A. Beglarian, M. Erhard, S. Groh, V. Hannen, M. Kraus, H. -W. Ortjohann, O. Rest, K. Schlösser, T. Thümmler, K. Valerius, K. Wierman, J. F. Wilkerson, D. Winzen, M. Zacher, C. Weinheimer. 2017-03-15. A pulsed, mono-energetic and angular-selective UV photo-electron source for the commissioning of the KATRIN experiment. https://doi.org/10.1140/epjc%2Fs10052-017-4972-9

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