Resonant-cavity antenna for plasma heating
This patent describes a magnetic confinement plasma device having a plasma. The plasma is immersed in a strong magnetic field and confined within an evacuated plasma chamber. A wave launcher for launching electromagnetic waves in the range of frequencies of 10 MHz to 200 MHz energizes and thereby heats the plasma. The wave launcher is spaced-apart from the plasma. The wave launcher comprises: a resonant cavity, including resonant chamber walls for containing electromagnetic fields; connection means connecting the resonant cavity to a transmission line carrying electromagnetic wave energy to the resonant cavity; at least one capacitive reactive element, and at least one inductive reactive element disposed within the resonant cavity; the capacitive reactive member separated from the chamber walls of the resonant cavity by a first predefined gap, with the capacitive reactive member and the chamber walls of the resonant cavity oriented approximately tangential to the strong magnetic field; the capacitive and the inductive reactive elements spaced apart from the plasma a second predetermined distance which at least partially determines the frequency of the launched waves; and the resonant cavity cooperating with the capacitive and the inductive reactive elements so as to launch electromagnetic waves in the range of frequencies, toward the plasma.
- Assignee:
- The United States of America as represented by the United States Dept. of Energy, Washington, DC
- Patent Number(s):
- US 4661304
- Application Number:
- TRN: 87-023020
- OSTI ID:
- 6395101
- Resource Relation:
- Patent File Date: Filed date 10 Jan 1984
- Country of Publication:
- United States
- Language:
- English
Similar Records
Preface to Special Topic: Advances in Radio Frequency Physics in Fusion Plasmas
Design, performance, and grounding aspects of the International Thermonuclear Experimental Reactor ion cyclotron range of frequencies antenna
Related Subjects
PLASMA HEATING
ANTENNAS
CAVITY RESONATORS
ELECTROMAGNETIC RADIATION
FREQUENCY MEASUREMENT
MAGNETIC FIELDS
ORIENTATION
PLASMA
SPACE DEPENDENCE
WAVELENGTHS
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
EQUIPMENT
HEATING
RADIATIONS
RESONATORS
700205* - Fusion Power Plant Technology- Fuel
Heating
& Injection Systems