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

作者：Behrens J^*; Ranitzsch P C O; Beck M; Beglarian A; Erhard M; Groh S; Hannen V; Kraus M; Ortjohann H W; Rest O; Schloesser K; Thuemmler T; Valerius K; Wierman K; Wilkerson J F; Winzen D; Zacher M; Weinheimer C

来源：European Physical Journal C, 2017, 77(6): 410.

DOI：10.1140/epjc/s10052-017-4972-9

The KATRIN experiment aims to determine the neutrino mass scale with a sensitivity of 200meV/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.

• 出版日期2017-6-19