External Rotational Transform Coil

Optimizes tokamak configuration

Installed inside the vacuum vessel with a modular rail structure, it generates a helical magnetic field, providing a hardware basis for exploring innovative approaches that combine the advantages of tokamaks and stellarators.

Li, Yangbo · Rao, Bo · Mao, Feiyue · Zhou, Song · Keze, Li · Zhao, Chuanxu · Ren, Zhengkang · Li, Da · Huang, Zhuo · He, Ying · Bo, Hu · Huang, Jie · Wang, Nengchao · Jiang, Zhonghe · Ding, Yonghua · Suzuki, Yasuhiro

Fusion Engineering and Design 2024

Advantages

Consists of two rings for producing a helical magnetic field

Features a modular rail structure designed to navigate the intricate vacuum vessel environment

Successfully installed on J-TEXT with preliminary experimental results consistent with design objectives