High-voltage monitoring with a solenoid retarding spectrometer at the KATRIN experiment

The KATRIN experiment will measure the absolute mass scale of neutrinos with a sensitivity of m(ν) = 200meV/c(2) by means of an electrostatic spectrometer set close to the tritium β-decay endpoint at 18.6keV. Fluctuations of the energy scale must be under control within ±60mV (±3ppm). Since a precis...

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Detalles Bibliográficos
Autores principales: Erhard, M, Bauer, S, Beglarian, A, Bergmann, T, Bonn, J, Drexlin, G, Goullon, J, Groh, S, Glück, F, Kleesiek, M, Haussmann, N, Höhn, T, Johnston, K, Kraus, M, Reich, J, Rest, O, Schlösser, K, Schupp, M, Slezak, M, Thümmler, T, Venos, D, Weinheimer, C, Wüstling, S, Zboril, M
Lenguaje:eng
Publicado: 2014
Materias:
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.1088/1748-0221/9/06/P06022
http://cds.cern.ch/record/2003116
Descripción
Sumario:The KATRIN experiment will measure the absolute mass scale of neutrinos with a sensitivity of m(ν) = 200meV/c(2) by means of an electrostatic spectrometer set close to the tritium β-decay endpoint at 18.6keV. Fluctuations of the energy scale must be under control within ±60mV (±3ppm). Since a precise voltage measurement in the range of tens of kV is on the edge of current technology, a nuclear standard will be deployed additionally. Parallel to the main spectrometer the same retarding potential will be applied to the monitor spectrometer to measure 17.8-keV K-conversion electrons of (83m)Kr. This article describes the setup of the monitor spectrometer and presents its first measurement results.

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