Configuration development and structural assessment of the FEDC ignitor concept

The Oak Ridge National Lab. Fusion Engineering Design Center (FEDC) has developed a compact ignition device based on the design approach established by Coppi of the Massachusetts Institute of Technology in his Ignitor concept. Ignitor uses preload of the inner toroidal field (TF) coil leg along with bucking of the TF coil against the ohmic heating (OH) solenoid to minimize the size of the ignition device. Emphasis has been placed on the configuration design of the reactor core module and the external, hydraulic preload system. A structural evaluation of all the major components of the FEDC Ignitor was performed during the design configuration development. These components include the reactor core assembly, the TF coil torque structure, and the preload structure. Also as part of the compact ignition studies program, a material properties task force evaluated the copper materials considered for the coils in all the concepts developed under the program. The main purpose of the task force was to develop a structural design criteria specifically for the compact ignited device using only the specified copper alloys