Accession Number : ADA184806

Title :   Theoretical and Experimental Investigation of Electron Beam Acceleration and Sub-Millimeter Wave Generation in Cyclotron Resonant Cavities.

Descriptive Note : Final technical rept.1 Feb 84-30 Apr 87,

Corporate Author : CALIFORNIA UNIV LOS ANGELES

Personal Author(s) : Luhmann, N C , Jr ; McDermott, D B ; Vitello, P

PDF Url : ADA184806

Report Date : 24 Jul 1987

Pagination or Media Count : 8

Abstract : The high energy, axis-encircling electron beam produced by our TE sub 111 gyro-resonant accelerator has been used to drive two varieties of high cyclotron harmonic amplifiers, the high harmonic gyro-klystron and the high harmonic gyro-TWT. The gyro-klystron has been tested in three configurations. The first was a simple two cavity gyro-klystron where the energy of the rotating beam is modulated in the buncher cavity. Bunches develop in the drift tuve and radiate in the catcher cavity. The fifth harmonic device yielded a gain of 20 dB and a saturated power of 90 W. A multi-cavity system can be expected to yielded considerably more gain because intermediate cavities will enhance the bunch formation. Using the same overall length as the two cavity device, the four cavity gyro-klystron yielded a gain of 37 dB, but saturated at roughly the same output power.

Descriptors :   *KLYSTRONS, *GYROTRONS, CAVITY RESONATORS, TRAVELING WAVE TUBES, GAIN, CYCLOTRON RESONANCE, POWER AMPLIFIERS, HARMONICS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE