First plasma processing trial of a quarter-wave resonator cryomodule at the Facility for Rare Isotope Beams
Studies of plasma processing for reduction of field emission in quarter-wave resonator (QWR) cryomodules are underway at the Facility for Rare Isotope Beams (FRIB), where a total of 104 QWRs are presently in operation. Driving the plasma with a higher-order mode allows for less mismatch at the fundamental power coupler and higher plasma density. The first plasma processing trial for FRIB QWRs in a cryomodule was conducted in January 2024. In-bunker cold tests of the cryomodule showed a significant reduction in field emission x-rays after plasma processing.
Authors
- Karl J. Friston
Institutions
- Facility for Rare Isotope Beams
Publication Details
- Journal
- Physical Review Accelerators and Beams
- Published
- 2025-12-03
- DOI
- https://doi.org/10.1103/psx7-jp78
- Primary Topic
- Particle accelerators and beam dynamics
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- U.S. Department of Energy
- Michigan State University
- Office of Science
- College of Engineering, Michigan State University
- Nuclear Physics
- Argonne National Laboratory
- Oak Ridge National Laboratory
- Fermilab
- Brookhaven National Laboratory