Abstract
The Large Coil Program (LCP) is chartered to develop viable superconducting toroidal field (TF) coils for tokamak reactors. The Large Coil Facility (LCTF) portion of the LCP will include pulse coils designed to simulate the transient fields in future ignition tokamaks. The magnitude, distribution, pulse ramp rate, and duration of pulsed fields expected in a TF coil for an ignition reactor serve as criteria for the simulation. The LCP coil test stand is an arrangement of six tokamak TF coils in a compact toroidal geometry. The design of a pulse field coil tailored to this geometry and providing the proper simulation of time-variant fields is the subject of this report. Several pulse coil candidate concepts are evaluated, including (1) a pair of poloidal coils outside the LCTF torus, (2) a single poloidal coil threaded through the torus, and (3) a pair of vertical axis coil windings inside the bore of the toroidal test coils. The latter configuration was selected for use in the LCTF due to its versatility, ease of fabrication, and lower operating cost.
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