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 β-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.
@article{arxiv.1703.05272,
title = {A pulsed, mono-energetic and angular-selective UV photo-electron source for the commissioning of the KATRIN experiment},
author = {J. Behrens and P. C. -O. Ranitzsch and M. Beck and A. Beglarian and M. Erhard and S. Groh and V. Hannen and M. Kraus and H. -W. Ortjohann and O. Rest and K. Schlösser and T. Thümmler and K. Valerius and K. Wierman and J. F. Wilkerson and D. Winzen and M. Zacher and C. Weinheimer},
journal= {arXiv preprint arXiv:1703.05272},
year = {2018}
}
Comments
19 pages, 16 figures, submitted to European Physical Journal C