The KATRIN Superconducting Magnets: Overview and First Performance Results
Abstract
The KATRIN experiment aims for the determination of the effective electron anti-neutrino mass from the tritium beta-decay with an unprecedented sub-eV sensitivity. The strong magnetic fields, designed for up to 6~T, adiabatically guide -electrons from the source to the detector within a magnetic flux of 191~Tcm. A chain of ten single solenoid magnets and two larger superconducting magnet systems have been designed, constructed, and installed in the 70-m-long KATRIN beam line. The beam diameter for the magnetic flux varies from 0.064~m to 9~m, depending on the magnetic flux density along the beam line. Two transport and tritium pumping sections are assembled with chicane beam tubes to avoid direct "line-of-sight" molecular beaming effect of gaseous tritium molecules into the next beam sections. The sophisticated beam alignment has been successfully cross-checked by electron sources. In addition, magnet safety systems were developed to protect the complex magnet systems against coil quenches or other system failures. The main functionality of the magnet safety systems has been successfully tested with the two large magnet systems. The complete chain of the magnets was operated for several weeks at 70 of the design fields for the first test measurements with radioactive krypton gas. The stability of the magnetic fields of the source magnets has been shown to be better than 0.01 per month at 70 of the design fields. This paper gives an overview of the KATRIN superconducting magnets and reports on the first performance results of the magnets.
Keywords
Cite
@article{arxiv.1806.08312,
title = {The KATRIN Superconducting Magnets: Overview and First Performance Results},
author = {M. Arenz and W. -J. Baek and M. Beck and A. Beglarian and J. Behrens and T. Bergmann and A. Berlev and U. Besserer and K. Blaum and T. Bode and B. Bornschein and L. Bornschein and T. Brunst and N. Buzinsky and S. Chilingaryan and W. Q. Choi and M. Deffert and P. J. Doe and O. Dragoun and G. Drexlin and S. Dyba and F. Edzards and K. Eitel and E. Ellinger and R. Engel and S. Enomoto and M. Erhard and D. Eversheim and M. Fedkevych and J. A. Formaggio and F. M. Fränkle and G. B. Franklin and F. Friedel and A. Fulst and n W. Gil and F. Glück and A. Gonzalez Ureña and S. Grohmann and R. Grössle and R. Gumbsheimer and M. Hackenjos and V. Hannen and F. Harms and N. Haußmann and F. Heizmann and K. Helbing and W. Herz and S. Hickford and D. Hilk and M. A. Howe and A. Huber and A. Jansen and J. Kellerer and N. Kernert and L. Kippenbrock and M. Kleesiek and M. Klein and A. Kopmann and M. Korzeczek and A. Kovalík and B. Krasch and M. Kraus and L. Kuckert and T. Lasserre and O. Lebeda and J. Letnev and A. Lokhov and M. Machatschek and A. Marsteller and E. L. Martin and S. Mertens and S. Mirz and B. Monreal and H. Neumann and S. Niemes and A. Off and A. Osipowicz and uE. Otten and D. S. Parno and A. Pollithy and A. W. P. Poon and F. Priester and P. C. -O. Ranitzsch and O. Rest and R. G. H. Robertson and F. Roccati and C. Rodenbeck and M. Röllig and C. Röttele and M. Ryšavý and R. Sack and A. Saenz and L. Schimpf and K. Schlösser and M. Schlösser and K. Schönung and M. Schrank and H. Seitz-Moskaliuk and J. Sentkerestiová and V. Sibille and M. Slezák and M. Steidl and N. Steinbrink and M. Sturm and M. Suchopar and H. H. Telle and L. A. Thorne and T. Thümmler and N. Titov and I. Tkachev and N. Trost and K. Valerius and D. Vénos and R. Vianden and A. P. Vizcaya Hernández and M. Weber and C. Weinheimer and C. Weiss and S. Welte and J. Wendel and J. F. Wilkerson and J. Wolf and S. Wüstling and S. Zadoroghny},
journal= {arXiv preprint arXiv:1806.08312},
year = {2018}
}