FAST CONTROL OF PLASMA SURFACE
We describe a fast method for the identification of the plasma boundary using results of magnetic measurements. The poloidal flux equation is solved inside the region bounded by the location of flux loops using the measured data as boundary values. Additional currents, substituting the plasma currents are distributed over a second control surface, chosen to lie inside the supposed plasma region. This surface current distribution is parameterized in the form of a truncated Fourier series whose coefficients are determined so as to yield an optimum fit to magnetic field component measurements by pick-up coils. By separating the inner region from all outside effects, this method avoids the difficulties arising in calculating the effects of the iron core present in JET.
Bibliographic Reference: WRITE TO MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, 8046 GARCHING BEI MUENCHEN (GERMANY), MENTIONING REPORT IPP 1/223, 1983
Record Number: 1989122048900 / Last updated on: 1987-01-01
Available languages: en