The ITER Device

Summary

The status of the ITER tokamak design at the mid-point of the EDA has been described. Relative to the Outline Design, major improvements have been incorporated in the modifications have simplified the design and facilitated fabrication, assemble and maintenance. The divertor concept remains similar to that of the OD, except a vertical target has been adopted as the first option. The cassette approach retains flexibility and permits rapid changeout of the divertor, which will allow ITER to take full advantage of future progress in divertor physics. The projected plasma performance of the IDR design is essentially unchanged from that of the OD, and allows realization of the ITER objectives based on extrapolation of the present confinement behavior. Disruptions produce substantial loads on all in-vessel components and their effects must be carefully taken into account in design of systems which extend into the vessel ports.