Calculation of Optimum Operating Parameters for a Gyrotron Travelling Wave Amplifier.
Abstract
Optimum operating parameters are determined for a new type of high power, high efficiency generator of millimeter waves known as a gyrotron travelling wave amplifier. In the example considered, wave amplification results from the interaction of a TE(01) waveguide mode with the fundamental cyclotron harmonic of an electron beam. The parameter optimization involves the determination of the point of maximum device efficiency as a function of beam density, beam energy, beam positioning, and external magnetic field for the output power required. An analytical linear theory and a numerical simulation code form the basis of theoretical calculations. As a result of the extensive survey in parameter space, the peak efficiency in the beam frame has been found to exceed 70%. This result has been applied to the specific design of a 35 GHz amplifier with output power approximately 340 kW, a power gain of 2 db/cm, and a laboratory frame efficiency of 51%. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1977
- Accession Number
- ADA049506
Entities
People
- A. T. Drobot
- J. L. Seftor
- Kworay Chu
- Victor L. Granatstein
Organizations
- United States Naval Research Laboratory