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In this paper the solution to divertor problems in present day tokamaks is examined, as embodied in the conventional high recycling divertor concept. It is shown that this approach does not suffice for an ITER sized tokamak, principally because the heat deposition is too localised, resulting in severe erosion or melting of the target plates. The various solutions which have been proposed, each of which involves techniques for distributing the exhaust power over a large divertor wall area, are then discussed. These techniques include gas target divertors, impurity-seeded radiating divertors, and glancing incidence targets.

Additional information

Authors: VLASES G C, JET Joint Undertaking, Abingdon, Oxon. (GB)
Bibliographic Reference: Report: JET-P(93)80 EN (1993)
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon. OX14 3EA (GB)
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