Operation of normal-conducting rf cavities in multi-Tesla magnetic fields for muon ionization cooling: A feasibility demonstration
Bowring, D.; Bross, A; Lane, Peter; Leonova, M.; Moretti, A.; Neuffer, D.; Pasquinelli, Ralph J.; Peterson, D.; Popovic, M.; Stratakis, D.; Yonehara, K.; Kochemirovskiy, A.; Torun, Y.; Adolphsen, C.; Ge, L.; Haase, A.; Li, Z.; Martin, D.; Chung, M.; Li, D.; Luo, T.; Freemire, B.; Liu, A; Palmer, M.
2020

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Abstract

Ionization cooling is the preferred method for producing bright muon beams. This cooling technique requires the operation of normal conducting, radio-frequency (rf) accelerating cavities within the multi-tesla fields of dc solenoid magnets. Under these conditions, cavities exhibit increased susceptibility to rf breakdown, which can damage cooling channel components and imposes limits on channel length and transmission efficiency. We report, for the first time, stable high-vacuum, normal-conducting cavity operation at gradients of $50\text{ }\text{ }\mathrm{MV}/\mathrm{m}$ in an external magnetic field of three tesla, through the use of beryllium cavity elements. This eliminates a significant technical risk that has previously been inherent in ionization cooling channel designs.

Details

Title
Operation of normal-conducting rf cavities in multi-Tesla magnetic fields for muon ionization cooling: A feasibility demonstration
Author
Bowring, D. : Fermi National Accelerator Laboratory : (https://orcid.org/0000-0001-9380-2587)
Bross, A : Fermi National Accelerator Laboratory : (https://orcid.org/0000-0002-1615-9222)
Lane, Peter : Fermi National Accelerator Laboratory : (https://orcid.org/0000-0002-6329-0661)
Leonova, M. : Fermi National Accelerator Laboratory : (https://orcid.org/0000-0001-5739-0941)
Moretti, A. : Fermi National Accelerator Laboratory
Neuffer, D. : Fermi National Accelerator Laboratory : (https://orcid.org/0000-0002-4538-1295)
Pasquinelli, Ralph J. : Fermi National Accelerator Laboratory
Peterson, D. : Fermi National Accelerator Laboratory : (https://orcid.org/0000-0003-0439-2825)
Popovic, M. : Fermi National Accelerator Laboratory
Stratakis, D. : Fermi National Accelerator Laboratory
Yonehara, K. : Fermi National Accelerator Laboratory : (https://orcid.org/0000-0002-5440-4153)
Kochemirovskiy, A. : University of Chicago
Torun, Y. : Illinois Institute of Technology
Adolphsen, C. : SLAC National Accelerator Laboratory : (https://orcid.org/0000-0002-2695-9266)
Ge, L. : SLAC National Accelerator Laboratory : (https://orcid.org/0000-0002-8554-1054)
Haase, A. : SLAC National Accelerator Laboratory
Li, Z. : SLAC National Accelerator Laboratory
Martin, D. : SLAC National Accelerator Laboratory
Chung, M. : Ulsan National Institute of Science and Technology : (https://orcid.org/0000-0001-7014-4120)
Li, D. : Lawrence Berkeley National Laboratory
Luo, T. : Lawrence Berkeley National Laboratory : (https://orcid.org/0000-0001-7358-9686)
Freemire, B. : Euclid Techlabs : (https://orcid.org/0000-0003-1139-7659)
Liu, A : Euclid Techlabs
Palmer, M. : Brookhaven National Laboratory : (https://orcid.org/0000-0002-4485-5532)
Content Type
Article
Published in
Physical Review Accelerators and Beams
Identifier(s)
DOI: https://doi.org/10.1103/physrevaccelbeams.23.072001
Funding Information
U.S. Department of Energy, DE-AC02-05CH11231
U.S. Department of Energy, DE-AC02-07CH11359
Cornell University
Illinois Institute of Technology
Fermilab
Brookhaven National Laboratory
Lawrence Berkeley National Laboratory
Publication Date
2020-07-02
Language
English
Copyright Statement

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license.

Licensing
Record Appears in
Physical Sciences Division > Physics
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Record Created
2024-05-01

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