The JT-60SA Toroidal Field Magnet—Design for Assembly

The JT-60SA experiment will be the world's largest superconducting tokamak when it is assembled in Naka, Japan (R = 3 m, a = 1.2 m). This paper describes the approach taken to define appropriate manufacturing tolerances and metrology points for each toroidal field (TF) coil and in particular the proposed procedure for the final assembly of the TF magnet system.