Depressed Collector Experiments on a Quasioptical Gyrotron
Abstract
A simple, single, single-stage collector has been tested on the quasioptical gyrotron (QOG) experiment at the Naval Research Laboratory (NRL). This is the first application of a depressed collector to a high power gyrotron, and was relatively easily accomplished due to the natural separation of the electron beam and the output radiation in the QOC. Collector efficiencies as high as 50% and overall efficiencies up to 16% were observed. The output power reached 431 kW with an overall efficiency of 13% and a collector efficiency of 41%. The collector efficiency was limited in this experiment due to interception of approximately 15% of the electron beam on an undepressed section of the beam guide, a problem readily correctable with a small change in the beam guide dimensions. If this part of the electron beam was collected at the collector potential, the overall and collector efficiency would increase to 16% and 55% respectively. The maximum collector efficiency would increase to 58% (at high output power) and the best overall efficiency would increase to 20% (at lower output power).
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 17, 1991
- Accession Number
- ADA234559
Entities
People
- Arne W. Fliflet
- M. L. Barsanti
- R. P. Fischer
- T. A. Hardgreaves
Organizations
- United States Naval Research Laboratory