High efficiency gyrotron oscillator and amplifier
US4370621A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1980 |
| Grant date | Jan 25, 1983 |
| Priority date | — |
| Expiry date | Mar 11, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J25/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electron cyclotron maser high-frequency generator/amplifier having a cavity resonator positioned in an axial magnetic field. A spiralling beam of relativistic electrons is injected into the cavity and stimulated emission of radiation by the electrons takes place at the frequency of a wave mode supported by the cavity resonator. The transverse efficiency, defined as the average electron energy loss divided by its initial transverse energy, is maximized by disposing a shaped iron collar about the cavity resonator to provide an axial magnetic field in the cavity resonator whose amplitude increases in the beam direction-of-travel. In an alternative embodiment, the transverse efficiency is maximized by tapering the inner wall of the cavity in the axial direction to provide a wave-mode in the cavity resonator whose electric-field amplitude increases in the beam direction-of-travel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.