The ITER divertor must be designed to provide power exhaust, impurity control, and helium and hydrogen pumping during an acceptable lifetime. The operating regime selected for the ITER CDA divertor would, for the present ITER parameters, result in high power loads and high erosion rates, even with inclined target plates. In the reference design for the ITER divertor, it is proposed to reduce the target load and electron temperature by radiating about 90% of the power along the divertor channel.
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