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Abstract

The goal of increasing the quality of confinement in tokamaks has led to a renewed interest in the "divertor" and "magnetic limiter" configuration in which the plasma boundary is defined by a magnetic separatrix, detached from the material limiter and the vacuum vessel. Such a configuration may afford improved thermal insulation of the plasma as well as reduced contamination from impurities. The region at the plasma boundary may be able to sustain a high edge temperature with a large temperature gradient when substantial additional heating is applied. Such a so-called "H mode" shows a much reduced radial transport compared to the "L mode". In this paper the initial results and the experimental observations on the formation of a magnetic separatrix in ohmic JET discharges are presented.

Additional information

Authors: TANGA A, JET JOINT UNDERTAKING, ABINGDON (UK);CAMPBELL D J, JET JOINT UNDERTAKING, ABINGDON (UK);DENNE B, JET JOINT UNDERTAKING, ABINGDON (UK);GIBSON A, JET JOINT UNDERTAKING, ABINGDON (UK);GOTTARDI N, JET JOINT UNDERTAKING, ABINGDON (UK);KELLMAN A, JET JOINT UNDERTAKING, ABINGDON (UK);LAZZARO E, JET JOINT UNDERTAKING, ABINGDON (UK);MAST K F, JET JOINT UNDERTAKING, ABINGDON (UK);MCCRACKEN G JET JOINT UNDERTAKING, ABINGDON (UK), JET JOINT UNDERTAKING, ABINGDON (UK)
Bibliographic Reference: 12TH EUROPEAN CONFERENCE ON CONTROLLED FUSION AND PLASMA PHYSICS, BUDAPEST (HUNGARY), SEPT. 2-6, 1985 PP. 37-40 WRITE TO THE PUBLICATIONS OFFICER, JET JOINT UNDERTAKING, ABINGDON, OXON, OX14 3EA (UK), MENTIONING REPORT JET-P(85)10, 1985
Record Number: 1989124054200 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en