Theoretical and Experimental Investigation of Electron Beam Acceleration and Submillimeter Wave Generation in Cyclotron Resonant Cavities
Final rept. 15 Sep 87-14 Mar 91,
CALIFORNIA UNIV LOS ANGELES
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Many millimeter wave generation interactions have been under development. A prebunched high harmonic gyrotron has extended the power level of our previous high harmonic gyrotrons. Also, the instabilities in gyro-TWT amplifiers are now understood and methods have been formulated to stabilize them multi severs. This work has led to the design of a very high power 500 kW harmonic gyro-TWT using a conventional MIG, which we plan to build in the next few years. We have also been active in the development of an extremely high power millimeter wave source, the CARM 1 we have designed and simulated a 300 MW, 17 GHz device for the next generation high gradient rf linac 2 we actively participated in LLNLs 250 GHz CARM project and 3 we are continuing to fabricate at UCLA a 400 kV, 10 MW proof of principle CARM, which will use Bragg reflectors for its requisite frequency selective cavity. We have advanced the state-of-the-art of Bragg reflectors by testing high mode purity Bragg reflectors. In addition, we have designed and are well into the construction of a very high power, wideband continuous tunability gyro-BWO and a very efficient gyro-klystron amplifier.
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