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The effect of the magnetic flux geometry of a poloidal divertor on the profiles and parameters at the divertor target is described by means of a simple model. Due to the magnetic flux expansion near the X-point, exponential profiles at the midplane of the tokamak are transformed in Gaussian profiles at the target. When the angle of incidence of the field line onto the target is considered, the possible existence of a maximum in the flux onto the target away from the magnetic separatrix appears naturally in agreement with experimental results.

Additional information

Authors: LOARTE A, JET Joint Undertaking, Abingdon, Oxon. (GB);HARBOUR P J, JET Joint Undertaking, Abingdon, Oxon. (GB)
Bibliographic Reference: Report: JET-P(91)60 EN (1991) 11 pp.
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon. OX14 3EA (GB)
Record Number: 199210515 / Last updated on: 1994-12-02
Original language: en
Available languages: en