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Because of the high magnetic compression ratio required, electrons in the Sydney University tunable gyrotron undergo multiple reflections before entering the resonant cavity. This results in unstable and unpredictable operation. A new cylindrical gun has been designed and fabricated. Computer simulations have predicted favorable broad-band behavior, and this has been confirmed by testing in the tunable gyrotron.
Microwave Theory and Techniques, IEEE Transactions on (Volume:33 , Issue: 4 )
Date of Publication: Apr 1985