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The Effect of a Poloidal Phase Difference on the Asymmetry of the Coupling Characteristics of an ICRH Antenna
Author(s) -
Du Dan,
Gong XueYu,
Hu HePing,
Liu BaiQing,
Huang QianHong,
Lu XingQiang
Publication year - 2011
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201000048
Subject(s) - asymmetry , tokamak , coupling (piping) , physics , antenna (radio) , phase (matter) , plasma , current (fluid) , phase difference , nuclear magnetic resonance , atomic physics , materials science , nuclear physics , telecommunications , computer science , quantum mechanics , metallurgy , thermodynamics
The coupling asymmetry characteristics of an ion cyclotron resonance heating (ICRH) antenna consisting of two poloidal aligned straps are studied for a JET‐type tokamak. The model used combines a three‐dimensional (3‐D) planar, cold‐plasma, single pass antenna‐plasma coupling code with any phase difference between the current straps, which takes into account the feeders' current and phase difference effects. The result shows that the asymmetry of radiated energy in poloidal direction can be controlled through changing the phase difference of the antenna straps, and when the phase difference equals to π , the asymmetry tends to become most pronounced (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)