期刊
JOURNAL OF INSTRUMENTATION
卷 9, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1748-0221/9/06/P06022
关键词
Real-time monitoring; Spectrometers; Control systems
资金
- Helmholtz Association (HGF)
- Bundesministerium fur Bildung und Forschung (BMBF) [05A11VK3, 05A11PM2]
- Grant Agency of the Czech Republic (GACR) [P203/12/1896]
- Deutsche Forschungsgemeinschaft (DFG) [SFB/TR 27]
- Karlsruhe House of Young Scientists (KHYS), the Center Elementary Particle and Astroparticle Physics (KCETA) of KIT
- ISOLDE [I80, IS500]
The KATRIN experiment will measure the absolute mass scale of neutrinos with a sensitivity of m(v) = 200 meV/c(2) by means of an electrostatic spectrometer set close to the tritium beta-decay endpoint at 18.6 keV. Fluctuations of the energy scale must be under control within +/- 60 mV (+/- 3 ppm). 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 Kr-83m. This article describes the setup of the monitor spectrometer and presents its first measurement results.
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