Title :
ITER asymmetric error fields and their correction
Author :
Leuer, J.A. ; La Haye, R.J. ; Kellman, A.G. ; Humphreys, D.A. ; Scoville, J.T. ; Gribov, Y. ; Wesley, J.C. ; Hender, T.C. ; Doinikov, N.
Author_Institution :
Gen. Atomics, San Diego, CA, USA
Abstract :
The locked mode threshold as a consequence of asymmetric error fields is expected to be an order of magnitude more stringent in ITER than in present tokamaks. Analysis is presented which summarizes the error field sources expected in ITER, A statistical approach is developed which combines the PF and TF sources into a single multi-mode predictor. A non-linear optimization technique is used to evaluate performance of the proposed error field correction coil system on the expected error field sources. The system is shown capable of correcting the expected residual machine error fields to below the predicted locked mode threshold
Keywords :
Tokamak devices; fusion reactor theory; plasma toroidal confinement; ITER asymmetric error fields; error field correction coil system; error field sources; locked mode threshold; nonlinear optimization technique; residual machine error fields; single multi-mode predictor; Coils; Degradation; Error correction; Laser mode locking; Magnetic analysis; Magnetic flux; Plasma properties; Region 8; Tokamak devices; Toroidal magnetic fields;
Conference_Titel :
Fusion Engineering, 1997. 17th IEEE/NPSS Symposium
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4226-7
DOI :
10.1109/FUSION.1997.687089
