“…The TF coil manufacturing is described in [9][10][11][12]. The major technical challenges of TF coil manufacturing were (1) wind, react and transfer technology to insert the conductor into the RP [10,12,13], (2) development of electrical insulating performance with high radiation condition [10,14], (3) accuracy of the CCL positioning to minimize the error magnetic field [9,10,15,16], (4) welding and machining technology within severe tolerances for the huge structures [9,11,[15][16][17][18].…”