INTEGRATED PLASMA CONTROL FOR ADVANCED TOKAMAKS
OAK-B135 Advanced tokamaks (AT) are distinguished from conventional tokamaks by their high degree of shaping, achievement of profiles optimized for high confinement and stability characteristics, and active stabilization of MHD instabilities to attain high values of normalized beta and confinement. These high performance fusion devices thus require accurate regulation of the plasma boundary, internal profiles, pumping, fueling, and heating, as well as simultaneous and well-coordinated MHD control action to stabilize such instabilities as tearing modes and resistive wall modes. Satisfying the simultaneous demands on control accuracy, reliability, and performance for all of these subsystems requires a high degree of integration in both design and operation of the plasma control system in an advanced tokamak. The present work describes the approach, benefits, and progress made in integrated plasma control with application examples drawn from the DIII-D tokamak. The approach includes construction of plasma and system response models, validation of models against operating experiments, design of integrated controllers which operate in concert with one another as well as with supervisory modules, simulation of control action against off-line and actual machine control platforms, and iteration of the design-test loop to optimize performance.
- Research Organization:
- General Atomics, San Diego, CA (United States)
- Sponsoring Organization:
- (US)
- DOE Contract Number:
- AC03-99ER54463
- OSTI ID:
- 823584
- Report Number(s):
- GA-A24494; TRN: US0401767
- Resource Relation:
- Conference: 20th IEEE/NPSS SYMPOSIUM ON FUION ENGINEERING, SAN DIEGO, CA (US), 10/14/2003--10/17/2003; Other Information: TO BE PUBLISHED IN FUSION SCIENCE AND TECNOLOGY; PBD: 1 Oct 2003
- Country of Publication:
- United States
- Language:
- English
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