27 September 2026 to 1 October 2026
Hilton San Francisco - Financial District
America/Los_Angeles timezone

Microwave Technologies for Plasma Heating in the 88-Inch Cyclotron ECR Ion Sources

29 Sept 2026, 16:00
2h
Hilton San Francisco - Financial District

Hilton San Francisco - Financial District

750 Kearny Street, San Francisco, CA 94108
Poster Presentation Poster session

Speaker

Michel Kireeff Covo (Lawrence Berkeley National Laboratory)

Description

The Electron Cyclotron Resonance (ECR) ion sources at the 88-Inch Cyclotron have integrated several established microwave technologies to meet increasing plasma-heating requirements. This work reviews the vacuum electron devices employed at the facility, including klystrons, traveling-wave tubes, and gyrotrons for ECR plasma heating. Although solid-state amplifiers continue to advance, vacuum electron devices remain the preferred technology for multi-kilowatt continuous-wave microwave generation because of their higher available output power, greater efficiency, and superior tolerance to reflected power and plasma-induced load variations. Operational experience demonstrates that these technologies provide the stability and robustness required for reliable production of high-current and high-charge-state ion beams.

Funding Agency

Work supported by the Director, Office of Science, Office of Nuclear Physics, Division of Nuclear Physics, U.S. Department of Energy under Contract No. DE-AC02-05CH11231.

Classification MC1: New developments and status reports
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Author

Michel Kireeff Covo (Lawrence Berkeley National Laboratory)

Co-authors

Mr Brendan Ford (Lawrence Berkeley National Laboratory) Mr Brien Ninemire (Lawrence Berkeley National Laboratory) Mr Collin Anderson (Lawrence Berkeley National Laboratory) Daniel Cheng (Lawrence Berkeley National Laboratory) Mr Erik Line (Lawrence Berkeley National Laboratory) Mr John Garcia (Lawrence Berkeley National Laboratory) Larry Phair (Lawrence Berkeley National Laboratory) Mr Michael Johnson (Lawrence Berkeley National Laboratory) Mr Nathaniel Bohm (Lawrence Berkeley National Laboratory) Scott Small (Lawrence Berkeley National Laboratory) Mr Shane Blim (Lawrence Berkeley National Laboratory)

Presentation materials

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