Reduction of stored-particle background by a magnetic pulse method at the KATRIN experiment

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

doi:10.1140/epjc/s10052-018-6244-8

Title: Reduction of stored-particle background by a magnetic pulse method at the KATRIN experiment

Journal Article · Wed Sep 26 00:00:00 EDT 2018 · European Physical Journal. C, Particles and Fields

DOI:https://doi.org/10.1140/epjc/s10052-018-6244-8· OSTI ID:1619348

Arenz, M.; Baek, W. -J.; Bauer, S.; Beck, M.; Beglarian, A.; Behrens, J.; Berendes, R.; Bergmann, T.; Berlev, A.; Besserer, U.; Blaum, K.; Bode, T.; Bornschein, B.; Bornschein, L.; Brunst, T.; Buglak, W.; Buzinsky, N.; Chilingaryan, S.; Choi, W. Q.; Deffert, M. more »

The KATRIN experiment aims to determine the effective electron neutrino mass with a sensitivity of 0.2eV/c2 (90\% C.L.) by precision measurement of the shape of the tritium beta-spectrum in the endpoint region. The energy analysis of the decay electrons is achieved by a MAC-E filter spectrometer. A common background source in this setup is the decay of short-lived isotopes, such as 219Rn and 220Rn, in the spectrometer volume. Active and passive countermeasures have been implemented and tested at the KATRIN main spectrometer. One of these is the magnetic pulse method, which employs the existing air coil system to reduce the magnetic guiding field in the spectrometer on a short timescale in order to remove low- and high-energy stored electrons. Here we describe the working principle of this method and present results from commissioning measurements at the main spectrometer. Simulations with the particle-tracking software Kassiopeia were carried out to gain a detailed understanding of the electron storage conditions and removal processes.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); University of North Carolina, Chapel Hill, NC (United States); Duke Univ., Durham, NC (United States). Triangle Universities Nuclear Laboratory

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; 05A17PM3; 05A17PX3; 05A17VK2; 05A17WO3; VH-NG-1055; CANAM-LM2011019

OSTI ID:: 1619348

Alternate ID(s):: OSTI ID: 1506349; OSTI ID: 1658828; OSTI ID: 1658957

Journal Information:: European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Vol. 78 Journal Issue: 9; ISSN 1434-6044

Publisher:: SpringerCopyright Statement

Country of Publication:: Germany

Language:: English

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Cited by: 3 works

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