A 2-DIMENSIONALLY FOCUSING, QUASI-OPTICAL ANTENNA FOR MILLIMETER-WAVE SCATTERING IN PLASMAS

被引：5

作者：

IDEHARA, T ^{[1
]}

TATSUKAWA, T ^{[1
]}

BRAND, GF ^{[1
]}

FEKETE, PW ^{[1
]}

MOORE, KJ ^{[1
]}

机构：

[1] UNIV SYDNEY,SCH PHYS,SYDNEY,NSW 2006,AUSTRALIA

来源：

JOURNAL OF APPLIED PHYSICS | 1990年 / 67卷 / 11期

关键词：

D O I：

10.1063/1.345058

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A two-dimensionally focusing, quasi-optical antenna having one elliptical reflector and one parabolic reflector has been built for use with a tunable gyrotron in order to carry out millimeter-wave scattering measurements on the TORTUS tokamak plasma at the University of Sydney. The advantages of this antenna are the following: (1) The elliptical reflector focuses the radiation beam in the toroidal direction, while the parabolic reflector focuses in the direction of major radius. This gives excellent two-dimensional focusing in the plasma region, and consequently excellent spatial resolution. (2) The focal point can be easily swept along the direction of major radius in the whole plasma region, simply by changing the angle of the parabolic reflector by a small amount. These features have been demonstrated experimentally using the tunable gyrotron source, GYROTRON III, and in computations of the radiated fields.

引用

页码：7086 / 7091

页数：6

共 12 条

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