Download or read book Theoretical and Experimental Investigation of Electron Beam Acceleration and Submillimeter Wave Generation written by and published by . This book was released on 1995 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.