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A variational evaluation of the electrostatic capacitance of an array of thick metal rods parallel to the ground is presented. A straightforward procedure allowing achievement of unlimited numerical accuracy is given, as well as a simple analytical approximation sufficient for all practical purposes. The method is applied to the Faraday shield of the JET ICRF antenna, where it yields a correction of order 40% to the classical thin wire formula.

Additional information

Authors: LAMALLE P U, JET Joint University, Abingdon, Oxon. (GB)
Bibliographic Reference: Article: JET-P(96)06 EN (1996) 10pp.
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon, OX14 3EA (GB)
Record Number: 199610839 / Last updated on: 1996-08-16
Original language: en
Available languages: en