A high-power X-band klystron employing a double-gap output cavity has been operating at SLAC. Multi-gap output circuits have lower surface gradients at the interaction gaps than single-gap ones but are prone to self-oscillate due to negative loading and trapped higher-order modes. In the double-gap circuit design, considerable attention had been directed to deal with these stability problems. The performance of the present tube appears to be limited by gap breakdown and beam interception particularly at long pulses. A three-gap output cavity is currently under development to further reduce the gap surface gradient. Another new feature of the circuit is an …
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A high-power X-band klystron employing a double-gap output cavity has been operating at SLAC. Multi-gap output circuits have lower surface gradients at the interaction gaps than single-gap ones but are prone to self-oscillate due to negative loading and trapped higher-order modes. In the double-gap circuit design, considerable attention had been directed to deal with these stability problems. The performance of the present tube appears to be limited by gap breakdown and beam interception particularly at long pulses. A three-gap output cavity is currently under development to further reduce the gap surface gradient. Another new feature of the circuit is an enlarged downstream drift tube to improve on beam clearance. This paper discusses the considerations involved in designing a multi-gap output cavity and presents the cold test measurements on the three-gap circuit. The experimental data is compared with numerical results from the 3-D simulation code ARGUS.
Society of Photo-Optical Instrumentation Engineers' international symposium on laser spectroscopy as part of SPIE's symposium on optics, electro-optics and laser applications in science and engineering, Los Angeles, CA (United States), 19-24 Jan 1992
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Ko, K.; Lee, T.G.; Tonegawa, S. (Stanford Linear Accelerator Center, Menlo Park, CA (United States)) & Kroll, N. (Stanford Linear Accelerator Center, Menlo Park, CA (United States) California Univ., San Diego, La Jolla, CA (United States). Dept. of Physics).A three-gap klystron output cavity at X-band,
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March 1, 1992;
Menlo Park, California.
(https://digital.library.unt.edu/ark:/67531/metadc1065222/:
accessed July 16, 2024),
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