LARGE-SIGNAL SIMULATIONS OF A GYROTRON TRAVELING-WAVE AMPLIFIER WITH A MODE-SELECTIVE INTERACTION CIRCUIT |
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| Authors: | Chongqing Jiao and Jirun Luo |
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| Affiliation: | (1) Institute of Electronics, Chinese academy of Sciences, P. O. Box 2652, Beijing, 100080, P. R. China;(2) Graduate School of the Chinese Academy of Sciences, Beijing, 100049, P.R. China |
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| Abstract: | A self-consistent nonlinear theory is used to analyze the saturated performances of a Ka-band gyrotron traveling wave amplifier (gyro-TWA) operating at the fundamental with a mode-selective interaction circuit involving a tapered vane-slot mode converter. The amplifier is predicted to generate 140 kW saturated output power with 33.3% efficiency, a saturated gain of 33dB, and a 3dB bandwidth of 2.7 GHz (8%) for a 70 kV, 6A electron beam with a velocity ratio of 1.0 and an axial velocity spread of 5%. |
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