ITER power supply innovations and advances

The ITER Power Supply it will be the largest ever built in terms of power, pulse length, and energy capacity. It will also be responsible for fast discharge of the ITER superconducting magnets whose energy storage will be at an unprecedented scale. Nearly all of the components that comprise the system will be unique, custom designed items that will exceed the prior state of the art. This paper describes the ITER power supply system and its components with an emphasis on the extrapolation in scale and technology compared to the TFTR/JET/JT-60/T-15 era of large tokamaks with normal (copper) magnets as well as the present fleet of superconducting tokamaks (EAST, KSTAR). The main design issues, the chosen design solutions, and the collaborative design process will be described. The present state of development of the components by the Domestic Agencies is summarized, and areas of technological advancement are highlighted.