Feasibility of a motional Stark effect system on the TCV tokamak

This article presents a feasibility study for a motional Stark effect diagnostic on the TCV tokamak. A numerical simulation code has been used to identify the optimal port arrangement and geometrical layout. It predicts the expected measurement accuracy for a range of typical plasma scenarios. With...

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Bibliographic Details
Published in:Review of scientific instruments 2004-09, Vol.75 (9), p.3002-3009
Main Authors: Siegrist, M. R., Hawkes, N., Weisen, H.
Format: Article
Language:English
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Summary:This article presents a feasibility study for a motional Stark effect diagnostic on the TCV tokamak. A numerical simulation code has been used to identify the optimal port arrangement and geometrical layout. It predicts the expected measurement accuracy for a range of typical plasma scenarios. With the existing neutral particle injector and a detection system based on current day technology, it should be possible to determine the safety factor with an accuracy of the order of 5%. A vertically injected beam through the plasma center would allow to measure plasmas which are centered above the midplane, a common occurrence in connection with electron cyclotron resonance heating and electron cyclotron current drive experiments. In this case a new and ideally more powerful neutral beam injector would be required.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.1785848