Author: Peter RaminsPublisher:
ISBN:
Category :
Languages : en
Pages : 20
Book Description
Multistage Depressed Collector with Efficiency of 90 to 94 Percent for Operation of a Dual-mode Traveling Wave Tube in the Linear Region
Author: Peter RaminsMultistaged Depressed Collector with Efficiency of 90 to 94 Percent for Operation of a Dual-mode Traveling-wave Tube in the Linear Region
Author: Peter RaminsPublisher:
ISBN:
Category : Beam optics
Languages : en
Pages : 20
Book Description
NASA Technical Paper
Author: Microwave and RF Vacuum Electronic Power Sources
Author: Richard G. CarterPublisher: Cambridge University Press
ISBN: 0521198623
Category : Technology & Engineering
Languages : en
Pages : 843
Book Description
Get up-to-speed on the theory, principles and design of vacuum electron devices.
Experimental Verification of the Multistage Depressed Collector Design Procedure for a High-perveance, Helix-type, Traveling-wave Tube
Author: James A. DaytonPublisher:
ISBN:
Category : Traveling-wave tubes
Languages : en
Pages : 28
Book Description
Experimental Verification of the Multistage Depressed Collector Design Procedure for a High-perveance, Helix-type, Traveling-wave Tube
Author: Traveling-wave-tube Efficiency Improvement by a Low-cost Technique for Deposition of Carbon on Multistage Depressed Collector
Author: Ben T. EbiharaVerification of Computer-aided Designs of Traveling-wave Tubes Utilizing Novel Dynamic Refocusers and Graphite Electrodes for the Multistage Depressed Collector
Author: Performance of Computer-designed Small-sized Four-stage Depressed Collector for Operation of Dual-mode Traveling Wave Tube
Author: Peter RaminsPublisher:
ISBN:
Category : Traveling-wave tubes
Languages : en
Pages : 18
Book Description
Design, Fabrication, and Performance of Brazed, Graphite Electrode, Multistage Depressed Collectors with 500-W, Continuous Wave, 4.8- to 9.6-GHz Traveling-wave Tubes
Author: Peter RaminsPublisher:
ISBN:
Category : Electrodes, Carbon
Languages : en
Pages : 24
Book Description
A small, isotropic graphite electrode, multistage depressed collector (MDC) was designed, fabricated, and evaluated in conjunction with a 500-W, continuous wave (CW), 4.8- to 9.6-GHz traveling wave tube (TWT). The carbon electrode surfaces were used to improve the TWT overall efficiency by minimizing the secondary electron emission losses in the MDC. The design and fabrication of the brazed graphite MDC assembly are described. The brazing technique, which used copper braze filler metal, is compatible with both vacuum and the more commonly available hydrogen atmosphere brazing furnaces. The TWT and graphite electrode MDC bakeout, processing, and outgassing characteristics were evaluated and found to be comparable to TWT's equipped with copper electrode MDC's. The TWT and MDC performance was optimized for broadband CW operation at saturation. The average radiofrequency (RF), overall, and MDC efficiencies were 14.9, 46.4, and 83.6 percent, respectively, across the octave operating band. A 1500-hr CW test, conducted without the use of an appendage ion pump, showed no gas buildup and excellent stability of the electrode surfaces.