Millimeter-wave gyroklystron amplifier experiment using a relativistic electron beam

Autor: W. M. Black, D. A. Kirkpatrick, Allen K. Kinkead, M. Sucy, Wallace M. Manheimer, Steven H. Gold, Arne W. Fliflet, D. L. Hardesty
Rok vydání: 1990
Předmět:
Zdroj: IEEE Transactions on Plasma Science. 18:1021-1027
ISSN: 0093-3813
DOI: 10.1109/27.61518
Popis: A fundamental-mode TE/sub 111/ degrees two-cavity intense-beam gyroklystron amplifier experiment, operating at an accelerating voltage of 1 MV, is reported. The two cavities that were tested are designed to serve as bunching cavities for a high-power output cavity. The two-cavity amplifier has demonstrated a linear gain of 15 dB and an unsaturated output power of approximately 40 kW, with the intracavity gain and power approximately 4 dB higher. The frequency of the second cavity has been found to track the frequency of the driven cavity over a range of 300 MHz around a center frequency of 35 GHz. Stable amplifier operation was achieved with beam currents as large as 150 A and a velocity pitch ratio of 0.36. The stable operating range was limited by spurious oscillation in the TE/sub 112/ degrees mode. Theoretical calculations indicate that higher gains might be attainable if this mode could be suppressed. >
Databáze: OpenAIRE