Author/Authors :
Matsukawa، نويسنده , , M. M. I. Ishida، نويسنده , , S. and Sakasai، نويسنده , , A. and Urata، نويسنده , , K. and Senda، نويسنده , , I. and Kurita، نويسنده , , G. and Tamai، نويسنده , , H. and Sakurai، نويسنده , , S. and Miura، نويسنده , , Y.M. and Masaki، نويسنده , , K. and Shimada، نويسنده , , K. and Terakado، نويسنده , , T.، نويسنده ,
Abstract :
The analyses of the plasma position and shape control in the superconducting tokamak JT-60SC in JAERI are presented. The vacuum vessel and stabilizing plates located closely to the plasma are modeled in 3 dimension, and we can take into account the large ports in the vacuum vessel. The linear numerical model used in the design for the plasma feedback control system is based on Grad–Shafranov equation, which allows the plasma surface deformation. For a slower control of the plasma shape, the superconducting equilibrium field (EF) coils outside toroidal field coils are used, while for a fast control of the plasma position, in-vessel normal conducting coils (IV coil) are used. It is shown that the available loop voltages of the EF and IV coils are very limited, but there are sufficient accuracy and acceptable response time of plasma position and shape control.
