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Equilibrium analysis is one of the essential tools for determining the plasma shape and profiles, in particular the current density and safety factor, as well as global physical quantities. A report is given on recent developments of the equilibrium code EFIT, which is used for the routine analysis of Joint European Torus (JET) tokamak discharges. A new method to treat the iron transformer surrounding the JET device is presented. This is one of the prerequisites for the development of a real-time discharge analysis and feedback of physical quantities. A new type of constraint derived from the shape of the electron cyclotron emission (ECE) temperature profile has been implemented which allows enhanced precision of the position of the magnetic axis and the safety factor.

Additional information

Authors: ZWINGMANN W, JET Joint Undertaking, Abingdon, Oxon (GB);O'BRIEN D P, JET Joint Undertaking, Abingdon, Oxon (GB);BARTLETT D, JET Joint Undertaking, Abingdon, Oxon (GB)
Bibliographic Reference: Report: JET-P(97)57 EN (1997) 4pp.
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon, OX14 3EA (GB)
Record Number: 199810643 / Last updated on: 1998-05-26
Original language: en
Available languages: en
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