First transmission of electrons and ions through the KATRIN beamline

0489296 - ÚJF 2019 RIV GB eng J - Journal Article
Arenz, M. - Dragoun, Otokar - Kovalík, Alojz - Lebeda, Ondřej - Ryšavý, Miloš - Sentkerestiová, Jana - Suchopár, Martin - Vénos, Drahoslav … Total 129 authors
First transmission of electrons and ions through the KATRIN beamline.
Journal of Instrumentation. Roč. 13, č. 4 (2018), č. článku P04020. ISSN 1748-0221. E-ISSN 1748-0221
R&D Projects: GA MŠMT LM2015056; GA MŠMT LTT18021
Institutional support: RVO:61389005
Keywords : ion sources * electron beam * detector control systems * beam-line instrumentation * spectrometers
OECD category: Nuclear physics
Impact factor: 1.366, year: 2018

The Karlsruhe Tritium Neutrino (KATRIN) experiment is a large-scale effort to probe the absolute neutrino mass scale with a sensitivity of 0.2 eV (90% confidence level), via a precise measurement of the endpoint spectrum of tritium beta-decay. This work documents several KATRIN commissioning milestones: the complete assembly of the experimental beamline, the successful transmission of electrons from three sources through the beamline to the primary detector, and tests of ion transport and retention. In the First Light commissioning campaign of autumn 2016, photoelectrons were generated at the rear wall and ions were created by a dedicated ion source attached to the rear section. in July 2017, gaseous Kr-83(m) was injected into the KATRIN source section, and a condensed Kr-83(m) source was deployed in the transport section. In this paper we describe the technical details of the apparatus and the configuration for each measurement, and give first results on source and system performance. We have successfully achieved transmission from all four sources, established system stability, and characterized many aspects of the apparatus.
Permanent Link: http://hdl.handle.net/11104/0283740