European Physical Journal C: Particles and Fields (May 2018)

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

  • M. Arenz,
  • W.-J. Baek,
  • M. Beck,
  • A. Beglarian,
  • J. Behrens,
  • T. Bergmann,
  • A. Berlev,
  • U. Besserer,
  • K. Blaum,
  • T. Bode,
  • B. Bornschein,
  • L. Bornschein,
  • T. Brunst,
  • N. Buzinsky,
  • S. Chilingaryan,
  • W. Q. Choi,
  • M. Deffert,
  • P. J. Doe,
  • O. Dragoun,
  • G. Drexlin,
  • S. Dyba,
  • F. Edzards,
  • K. Eitel,
  • E. Ellinger,
  • R. Engel,
  • S. Enomoto,
  • M. Erhard,
  • D. Eversheim,
  • M. Fedkevych,
  • S. Fischer,
  • J. A. Formaggio,
  • F. M. Fränkle,
  • G. B. Franklin,
  • F. Friedel,
  • A. Fulst,
  • W. Gil,
  • F. Glück,
  • A. Gonzalez Ureña,
  • S. Grohmann,
  • R. Grössle,
  • R. Gumbsheimer,
  • M. Hackenjos,
  • V. Hannen,
  • F. Harms,
  • N. Haußmann,
  • F. Heizmann,
  • K. Helbing,
  • W. Herz,
  • S. Hickford,
  • D. Hilk,
  • D. Hillesheimer,
  • M. A. Howe,
  • A. Huber,
  • A. Jansen,
  • J. Kellerer,
  • N. Kernert,
  • L. Kippenbrock,
  • M. Kleesiek,
  • M. Klein,
  • A. Kopmann,
  • M. Korzeczek,
  • A. Kovalík,
  • B. Krasch,
  • M. Kraus,
  • L. Kuckert,
  • T. Lasserre,
  • O. Lebeda,
  • J. Letnev,
  • A. Lokhov,
  • M. Machatschek,
  • A. Marsteller,
  • E. L. Martin,
  • S. Mertens,
  • S. Mirz,
  • B. Monreal,
  • H. Neumann,
  • S. Niemes,
  • A. Off,
  • A. Osipowicz,
  • E. Otten,
  • D. S. Parno,
  • A. Pollithy,
  • A. W. P. Poon,
  • F. Priester,
  • P. C.-O. Ranitzsch,
  • O. Rest,
  • R. G. H. Robertson,
  • F. Roccati,
  • C. Rodenbeck,
  • M. Röllig,
  • C. Röttele,
  • M. Ryšavý,
  • R. Sack,
  • A. Saenz,
  • L. Schimpf,
  • K. Schlösser,
  • M. Schlösser,
  • K. Schönung,
  • M. Schrank,
  • H. Seitz-Moskaliuk,
  • J. Sentkerestiová,
  • V. Sibille,
  • M. Slezák,
  • M. Steidl,
  • N. Steinbrink,
  • M. Sturm,
  • M. Suchopar,
  • M. Suesser,
  • H. H. Telle,
  • L. A. Thorne,
  • T. Thümmler,
  • N. Titov,
  • I. Tkachev,
  • N. Trost,
  • K. Valerius,
  • D. Vénos,
  • R. Vianden,
  • A. P. Vizcaya Hernández,
  • M. Weber,
  • C. Weinheimer,
  • C. Weiss,
  • S. Welte,
  • J. Wendel,
  • J. F. Wilkerson,
  • J. Wolf,
  • S. Wüstling,
  • S. Zadoroghny

DOI
https://doi.org/10.1140/epjc/s10052-018-5832-y
Journal volume & issue
Vol. 78, no. 5
pp. 1 – 7

Abstract

Read online

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 $$^{83{\mathrm{m}}}$$ 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.