Technology Developments Toward ELM Coil Manufacturing Appropriate for Tokamak

Abstract

The Institute for Plasma Research (IPR) has been developing technologies appropriate toward realizing fusion-relevant edge-localized mode (ELM) magnets in Tokamaks, such as suitable for Joint European Torus (JET) and Steady State Superconducting Tokamak (SST-1). The development of characteristic winding topologies, developing an appropriate “special-purpose winding facility,” developing a high-temperature resin insulation system, developing vacuum pressure impregnation of high-temperature resin systems in a manufactured winding pack, developing profiled-case manufacturing technologies, and developing technologies at consolidating and encasing the impregnated winding packs are some of the essential aspects of realizing an ELM control coil. In these contexts, under an IN-EU joint initiative, the Magnet Technology Development Division at IPR has developed 1:1 prototypes of JET ELM control coils. These technologies would also be extended to the SST-1 ELM coils. This paper would elaborate on some of the salient technologies developed in support of JET ELM prototype coil realization.