Accession Number : ADA296096

Title :   Theoretical and Experimental Investigation of Electron Beam Acceleration and Submillimeter Wave Generation.

Descriptive Note : Final technical rept. 1 Apr 93-31 Jan 95,

Corporate Author : CALIFORNIA UNIV LOS ANGELES

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

PDF Url : ADA296096

Report Date : 05 JUN 1995

Pagination or Media Count : 14

Abstract : The objective of our research is to investigate the physics as well as to develop the technology of compact submillimeter-wave devices.(1) A revolutionary new device, the gyro-frequency multiplier, which can potentially generate 50 kW at 1-2 Thz by using a 140 GHz gyrotron as its input source, has been tested in our laboratory. (2) Our second-harmonic gyro-TWT amplifier, which is based on our recent marginal stability design (MSD) procedure, yielded extremely good results, including a record setting output power of 207 kW, with 13% efficiency, 16 dB saturated gain, 2% bandwidth and was completely stable. (3) The MSD procedure was also used to design two other stable, high performance amplifiers: a 1 MW, 140 GHz, third harmonic gyro-TWT and a 100 kW CW, 95 GHz, TE(01) gyro-TWT. (4) We have also begun a major new program to develop high power, ultra-wideband prebunched FELs for radar applications using a photoemitted rf gun (5) We have also continued to construct a high-performance 250 kW CW, 33.2 GHz TE(01)TE(02) gyroklystron amplifier and begun a 70 kW CW, 95 GHz, third harmonic, smooth bore gyroklystron amplifier program.

Descriptors :   *TRAVELING WAVE TUBES, *GYROTRONS, *ELECTRON ACCELERATORS, HIGH POWER, SETTING(ADJUSTING), THEORY, RADAR, ELECTRON BEAMS, WAVE PROPAGATION, SUBMILLIMETER WAVES, MILLIMETER WAVE EQUIPMENT.

Subject Categories : Electrooptical and Optoelectronic Devices
      Particle Accelerators

Distribution Statement : APPROVED FOR PUBLIC RELEASE