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An experiment has been performed on the TEXTOR tokamak which proves that the plasma can be heated by ion cyclotron resonance using antennae without a Faraday shield. The heating performance of the unshielded antenna is found to be similar to that of a shielded antenna. Although the radiated power is somewhat higher with the unshielded antenna, no impurity problems have been encountered. These results are explained on the basis of RF sheath theory and shielding of parallel electric fields by the plasma with nearly no loss. Unshielded antenna implementation criteria are obtained.

Additional information

Authors: VAN NIEUWENHOVE R ET AL., Ecole Royale Militaire, Bruxelles (BE);BOEDO J A, University of California, Los Angeles (US);SCHWEER B, Institut für Plasmaphysik, Kernforschungsanlage Jülich GmbH, Jülich (DE);STICKELMANN C, Institut für Plasmaphysik, Kernforschungsanlage Jülich GmbH, Jülich (DE)
Bibliographic Reference: Report: ERM Laboratory Report No. 95, EN (1991) 8 pp.
Availability: Available from Zentralbibliothek der Kernforschungsanlage Jülich GmbH, Postfach 1913, 5170 Jülich (DE)
Record Number: 199111195 / Last updated on: 1994-12-02
Original language: en
Available languages: en