ICRF launcher studies: Progress report
The research we have accomplished during the past year includes the topics of ICRF fast wave coupling to L- and H-mode edge profiles, measurements of simulated plasma loads on an 85 MHz launcher, coupling of ion Bernstein waves and a simulation of the folded waveguide launcher. We have also begun to examine coupling between launched fast waves and ion Bernstein waves driven by density gradients near the plasma edge and the effects of known edge turbulence and ponderomotive forces on the direct launching of ion Bernstein waves. We find that a TE/sub 10/ ICRF fast mode waveguide launcher has only a moderate increase in its reflection coefficient when coupling into a model H-mode plasma density profile. We find that linear coupling from fast modes to ion Bernstein modes can only occur with large density gradient scale lengths near the plasma edge. The current power level of ion Bernstein wave heating experiments is found to yield ponderomotive force effects which can substantially modify plasma edge density profiles. 7 refs.
- Research Organization:
- Wisconsin Univ., Madison (USA). Dept. of Electrical and Computer Engineering
- DOE Contract Number:
- FG02-86ER52133
- OSTI ID:
- 6135484
- Report Number(s):
- DOE/ER/52133-2; ON: DE88001710
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ICR HEATING
PLASMA SIMULATION
WAVEGUIDES
BERNSTEIN MODE
ELECTRON DENSITY
FLUCTUATIONS
ION CYCLOTRON-RESONANCE
PLASMA DENSITY
PLASMA SCRAPE-OFF LAYER
POWER COEFFICIENT
PROGRESS REPORT
TOKAMAK DEVICES
WAVE PROPAGATION
BOUNDARY LAYERS
CLOSED PLASMA DEVICES
CYCLOTRON RESONANCE
DOCUMENT TYPES
HEATING
HIGH-FREQUENCY HEATING
LAYERS
OSCILLATION MODES
PLASMA HEATING
REACTIVITY COEFFICIENTS
RESONANCE
SIMULATION
THERMONUCLEAR DEVICES
VARIATIONS
700108* - Fusion Energy- Plasma Research- Wave Phenomena
700101 - Fusion Energy- Plasma Research- Confinement
Heating
& Production