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The next generation of electron cyclotron emission imaging diagnostics (invited)a)
a)Invited paper, published as part of the Proceedings of the 17th Topical Conference on High-Temperature Plasma Diagnostics, Albuquerque, New Mexico, May 2008.
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View: Figures


Image of FIG. 1.
FIG. 1.

Photograph of a miniature elliptical lens or minilens.

Image of FIG. 2.
FIG. 2.

Photograph of a 16 element minilens array.

Image of FIG. 3.
FIG. 3.

Illustration of the front-side LO pumping of a staggered minilens array.

Image of FIG. 4.
FIG. 4.

Illustration and photo of (a) the current TEXTOR antenna and (b) a new antenna proposed for use with front-side LO operation.

Image of FIG. 5.
FIG. 5.

Far field antenna patterns measured at for (a) the current ECEI antenna and (b) the new front-side LO pumped minilens antenna. Poloidal (-plane) patterns are shown left and toroidal (-plane) patterns are shown right.

Image of FIG. 6.
FIG. 6.

Optical design of the new TEXTOR minilens system with vertical zoom capability.

Image of FIG. 7.
FIG. 7.

Illustration of how multiple quasioptical filters can be combined to enhance ECRH protection of minilens based imaging systems.

Image of FIG. 8.
FIG. 8.

Schematic layout of the dual-band rf board for ECEI.


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Scitation: The next generation of electron cyclotron emission imaging diagnostics (invited)a)