Radio frequency vacuum feedthroughs for high-power ICRF heating applications
Frequently, high-power pulsed ion cyclotron range of frequency experiments are limited by breakdown at the vacuum feedthrough. This paper describes the development and testing of vacuum feedthroughs to increase both reliability and capability. The ultimate goal of the program is to develop a continuous-wave feedthrough for the next generation of fusion experiments. A feedthrough concept currently under investigation consists of a simple, cylindrical alumina ceramic brazed between tapered coaxial conductors. A prototype has been tested to voltage levels in excess of 100 kV for 100-ms pulses and 70 kV for 5-s pulses at 28 MHz. Insertion-voltage-standing-wave ratios are <1.15:1 for frequencies below 450 MHz. An upgraded water-cooled version being fabricated for use on TEXTOR will be described.
- Research Organization:
- Oak Ridge National Laboratory, Oak Ridge, TN
- OSTI ID:
- 5793263
- Report Number(s):
- CONF-850310-
- Journal Information:
- Fusion Technol.; (United States), Journal Name: Fusion Technol.; (United States) Vol. 8:1; ISSN FUSTE
- Country of Publication:
- United States
- Language:
- English
Similar Records
Radio frequency coaxial feedthrough device
Radio frequency coaxial feedthrough device
Related Subjects
700205* -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
BREMSSTRAHLUNG
CLOSED PLASMA DEVICES
CYCLOTRON RADIATION
CYCLOTRON RESONANCE
DESIGN
ELECTROMAGNETIC RADIATION
ENERGY RANGE
FREQUENCY RANGE
HEATING
HIGH-FREQUENCY HEATING
ICR HEATING
ION CYCLOTRON-RESONANCE
KEV RANGE
KEV RANGE 10-100
MHZ RANGE
MHZ RANGE 01-100
PERFORMANCE TESTING
PLASMA HEATING
PULSES
RADIATIONS
RELIABILITY
RESONANCE
RF SYSTEMS
STANDING WAVES
TESTING
TEXTOR TOKAMAK
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
VACUUM SYSTEMS
WAVE PROPAGATION