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

Journal Article · · European Physical Journal. C, Particles and Fields
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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 Kr-83m 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) of the high-voltage divider K35 is in agreement with the last PTB calibration four years ago. This result demonstrates the utility of the calibration method, as well as the long-term stability of the voltage divider.

Research Organization:
University of North Carolina, Chapel Hill, NC (United States); Duke Univ., Durham, NC (United States). Triangle Universities Nuclear Laboratory; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP); Helmholtz Association (HGF); German Federal Ministry of Education and Research (BMBF); Ministry of Education, Youth and Sports of the Czech Republic (MEYS)
Contributing Organization:
KATRIN collaboration
Grant/Contract Number:
AC02-05CH11231; FG02-97ER41020; FG02-94ER40818; SC0004036; FG02-97ER41033; FG02-97ER41041; SC0011091; 05A14VK2; 05A17PM3; VH-NG-1055; CANAM-LM2011019; LTT18021
OSTI ID:
1436553
Alternate ID(s):
OSTI ID: 1461990; OSTI ID: 1658840; OSTI ID: 1658952
Journal Information:
European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Vol. 78 Journal Issue: 5; ISSN 1434-6044
Publisher:
SpringerCopyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 15 works
Citation information provided by
Web of Science

References (16)

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High-voltage monitoring with a solenoid retarding spectrometer at the KATRIN experiment journal June 2014
Current Direct Neutrino Mass Experiments journal January 2013
Focal-plane detector system for the KATRIN experiment
  • Amsbaugh, J. F.; Barrett, J.; Beglarian, A.
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journal April 2015
High precision hyperfine measurements in Bismuth challenge bound-state strong-field QED journal May 2017
Toward a more accurate Q value measurement of tritium: status of THe-Trap journal October 2013
The search for the neutrino mass by direct method in the tritium beta-decay and perspectives of study it in the project KATRIN journal May 2003
Precision high voltage divider for the KATRIN experiment journal October 2009
Upper limit on the electron antineutrino mass from the Troitsk experiment journal December 2011
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Increased Accuracy of the Binding Energy of K- and L-Subshell Electrons in Krypton from Re-analysis of Experimental Data: Importance for Determination of the Neutrino Mass journal August 2004
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Tritium–helium-3 mass difference using the Penning trap mass spectroscopy journal May 1993
Next generation KATRIN high precision voltage divider for voltages up to 65kV journal October 2013
A solenoid retarding spectrometer with high resolution and transmission for keV electrons journal February 1992

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