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Calibration of high voltages at the ppm level by the difference of $^{83m}$Kr conversion electron lines at the KATRIN experiment

Arenz, M.; Baek, W.-J.; Beck, M.; Beglarian, A.; Behrens, J.; Bergmann, T.; Berlev, A.; Besserer, U.; Blaum, K.; Bode, T.; Bornschein, B.; Bornschein, L.; Brunst, T.; Buzinsky, N.; Chilingaryan, S.; Choi, W. Q.; Deffert, M.; Doe, P. J.; Dragoun, O.; Drexlin, G.; ... mehr

Abstract:
The neutrino mass experiment KATRIN requires a stability of 3 ppm for the retarding potential at − 18.6 kV of the main spectrometer. To monitor the stability, two custom-made ultra-precise high-voltage dividers were developed and built in cooperation with the German national metrology institute Physikalisch-Technische Bundesanstalt (PTB). Until now, regular absolute calibration of the voltage dividers required bringing the equipment to the specialised metrology laboratory. Here we present a new method based on measuring the energy difference of two $^{83m}$ Kr conversion electron lines with the KATRIN setup, which was demonstrated during KATRIN’s commissioning measurements in July 2017. The measured scale factor M=1972.449(10)
M=1972.449(10) of the high-voltage divider K35 is in agreement with the last PTB calibration 4 years ago. This result demonstrates the utility of the calibration method, as well as the long-term stability of the voltage divider.

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Verlagsausgabe §
DOI: 10.5445/IR/1000082763
Veröffentlicht am 04.06.2018
Originalveröffentlichung
DOI: 10.1140/epjc/s10052-018-5832-y
Scopus
Zitationen: 7
Web of Science
Zitationen: 6
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Technische Physik (ITEP)
Institut für Kernphysik (IKP)
Institut für Prozessdatenverarbeitung und Elektronik (IPE)
Institut für Experimentelle Teilchenphysik (ETP)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 05.2018
Sprache Englisch
Identifikator ISSN: 1434-6044, 1434-6052
urn:nbn:de:swb:90-827639
KITopen-ID: 1000082763
HGF-Programm 51.03.01 (POF III, LK 01)
Neutrinophysik Katrin
Erschienen in The European physical journal / C
Band 78
Heft 5
Seiten Art.Nr. 368
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Vorab online veröffentlicht am 09.05.2018
Nachgewiesen in Web of Science
Scopus
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