Demountable Toroidal Field Magnets for Use in a Compact Modular Fusion Reactor

11th European Conference on Applied Superconductivity

Mangiarotti, F.J.^1 ; Goh, J.^1 ; Takayasu, M.^1 ; Bromberg, L.^1 ; Minervini, J.V.^1 ; Whyte, D.^1

Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge

MA

02139, United States^1

关键词: Cooling costs;    Demountable toroidal field magnets;    Electrical joints;    Measurements of;    On-axis;    Reducing costs;    Subcooled;    YBCO conductors;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/507/3/032030/pdf
DOI  :  10.1088/1742-6596/507/3/032030

来源: IOP

【 摘 要 】

A concept of demountable toroidal field magnets for a compact fusion reactor is discussed. The magnets generate a magnetic field of 9.2 T on axis, in a 3.3 m major radius tokamak. Subcooled YBCO conductors have a critical current density adequate to provide this large magnetic field, while operating at 20 K reduces thermodynamic cooling cost of the resistive electrical joints. Demountable magnets allow for vertical replacement and maintenance of internal components, potentially reducing cost and time of maintenance when compared to traditional sector maintenance. Preliminary measurements of contact resistance of a demountable YBCO electrical joint between are presented.