Minimum-Thickness Low-Activation Toroidal Field Coil Concept for Tokamak Reactors

摘要

A minimum-thickness, low-activation toroidal-field-coil design concept is presented. The concept is consistent with the low-activation fusion-reactor design requirements suitable for STARFIRE-type devices. The design approach consists mainly of replacing the high-activation components such as stainless steel structure and copper stabilizer in the high-flux region of the TF coils by low-activation components such as aluminum alloy structure and aluminum stabilizer, while leaving the core of the coils unchanged from earlier designs. The resulting low-activation front regions will reduce the dose level due to its lower residual activity and the fact that it is acting as a shield between the high-activity core and the personnel-access area. The cross-sectional areas required for various low-activation TF coil options were compared in order to develop a design that fits within the very constrained space suitable in the inboard region of a tokamak reactor. (ERA citation 08:055290)