Physical Sciences Division
Published July 2, 2020 | Version v1
Journal article Open

Operation of normal-conducting rf cavities in multi-Tesla magnetic fields for muon ionization cooling: A feasibility demonstration

Creators

  • 1. Fermi National Accelerator Laboratory
  • 2. University of Chicago
  • 3. Illinois Institute of Technology
  • 4. SLAC National Accelerator Laboratory
  • 5. Ulsan National Institute of Science and Technology
  • 6. Lawrence Berkeley National Laboratory
  • 7. Euclid Techlabs
  • 8. Brookhaven National Laboratory

Description

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.

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PhysRevAccelBeams.23.072001.pdf

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Additional details

Identifiers

DOI
10.1103/physrevaccelbeams.23.072001
Other
oai:uchicago.tind.io:11626

Funding

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

UChicago Information

Division(s)
Physical Sciences Division
Department(s)
Physics