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An essential part of an ICRF system to be used in fusion reactor is the RF window. This is fitted in a coaxial transmission line. It forms a vacuum and a tritium boundary between the antenna, situated inside the machine, and the transmission line, which feeds it. A double window is required with a vacuum inter-space. The dielectric, which forms the vacuum boundary, must be brazed into its housing. The must be of a robust construction, and capable of with standing both axial and radial loads. The vauum boundaries should be walled in order to act as a suitable tritium barrier. A further requirement is that the window is capable of continuous operation. A half scale prototype has been manufactured, which has successfully completed RF, vacuum, and mechanical testing at JET, but has no water cooling, which is a requirement for continuous operation.

Additional information

Authors: WALTON RC, JET Joint Undertaking, Abingdon (GB)
Bibliographic Reference: Report: JET-R(99)03, (1999), 6pp.
Availability: Available from Librarian at JET Joint Undertaking, Abingdon (GB)
Record Number: 199911567 / Last updated on: 1999-11-13
Original language: en
Available languages: en
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