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Coils of the LHD

3 pairs of poloidal coils (RED) and a pair of helical coils (YELLOW). They are superconducting magnets.

Poloidal coils

(Inner Vertical coil, Inner Shaping coil, and Outer Vertical coil)

	IV coil	IS coil	OV coil
Diameter(inside)	3.2m	5.4m	10.4m
Diameter(outside)	4.2m	6.2m	11.6m
Weight	16ton	25ton	45ton
B max	6.5T	5.4T	5.0T
Current	20.8kA	21.6kA	31.3kA
Turn number	240	208	144

Helical coil

	HELICAL coil
Major radius	3.9m
Minor radius	0.975m
Weight	65ton
B max	6.9T
Current(1st phase)	13kA
Current(2nd phase)	17kA
Turn number	450