Claims
- 1. In a gyrotron:
- means for forming a beam of spiraling charged particles,
- a hollow conducting cavity shaped to resonate in a mode with circular electric field,
- an end of said cavity comprising an opening for passage of said beam,
- an end of said cavity comprising an opening connecting to a circular waveguide capable of transmitting a wave having a circular electric field, the improvement being
- a groove in the wall of said cavity, said groove running parallel to said electric field of said mode, the walls of said groove having low resistive loss and the interior of said groove having low dielectric loss,
- whereby field patterns of modes with non-circular electric fields are perturbed with only a small dissipation of their energy.
- 2. The gyrotron of claim 1 wherein said cavity, said waveguide, said groove and said openings are figures of revolution about an axis.
- 3. The gyrotron of claim 2 wherein the outline of said beam is a figure of revolution about said axis.
- 4. The gyrotron of claim 1 wherein said wall of said cavity is of high-conductivity metal and the walls, including the bottom, of said groove are of high-conductivity metal and the interior of said groove is empty.
Government Interests
The Government has rights in this invention persuant to Contract No. 53X-01617C awarded by the U.S. Department of Energy.
US Referenced Citations (4)
Foreign Referenced Citations (1)
Number |
Date |
Country |
55-113240 |
Jan 1980 |
JPX |