NIFS-852

FULL TEXT (PDF, 265 KB)

Author(s):

M. Yoshinuma

Title:

Formation of Radial Electric Field Shear at Boundary of Magnetic Island in LHD

Date of publication:

Oct. 2006

Key words:

21 IAEA Fusion Energy Conference , EX/P7-7

Abstract:

Active control of a radial electric field shear by a combination of pellet injection and a magnetic island induced by external perturbation coils is demonstrated in the Large Helical Device (LHD). In this experiment, the radial electric field shear at the boundary of the magnetic island reaches 0.3 MV/m^2 and is sustained by repetitive injection of the pellet and the improvement of ion transport is observed near the boundary of the magnetic island.

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