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The successful operation of a 'popup' Langmuir probe system, which was installed in the JET MkIIa divertor, is described. The system utilises the ambient magnetic field in tokamak plasmas to act on a current carrying coil and pop up a rail containing Langmuir probes. Measurements were made using 'Pin-Plate' probes which, owing to theitr relatively large exposed area, are ideally suited for use with such a system. Details of the design, testing, measurements and potential applications of the JET's 'pop-up' system are given.

Additional information

Authors: DAVIES S J, JET Joint Undertaking, Abingdon (GB);MATTHEWS G F, JET Joint Undertaking, Abingdon (GB);WILSON C H, JET Joint Undertaking, Abingdon (GB);TELLIER X, CORNING S A, Avon (FR)
Bibliographic Reference: Article: JET-P(98)67
Record Number: 199910841 / Last updated on: 1999-06-11
Original language: en
Available languages: en
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