JT-60SA upgrades begin with new first wall, divertor and in-vessel coils

National Institutes for Quantum Science and Technology (QST)/JT-60SA

Europe and Japan began systematic upgrades of JT-60SA, installing a new first wall and divertor with carbon-based armor, eight upgraded neutral beam tanks, European-supplied measurement systems, and new in-vessel plasma control coils to prepare the machine for higher-performance experiments.

• New in-vessel coils measure 8 meters in diameter for high-speed plasma position control
• Eight neutral beam injectors upgraded for enhanced heating capability
• Diagnostics include Thomson scattering, X-ray spectrometers and vacuum ultraviolet instruments