Design, construction, and performance of a composite mirror for collecting Thomson scattered light from the large helical device plasma | Zendy

K. Narihara | Zendy; I. Yamada | Zendy; H. Hayashi | Zendy; K. Yamauchi | Zendy

Open Access

Design, construction, and performance of a composite mirror for collecting Thomson scattered light from the large helical device plasma

Author(s) -

K. Narihara,

I. Yamada,

H. Hayashi,

K. Yamauchi

Publication year - 2004

Publication title -

review of scientific instruments

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.605

H-Index - 165

eISSN - 1089-7623

pISSN - 0034-6748

DOI - 10.1063/1.1787919

Subject(s) - curved mirror , optics , plasma , materials science , composite number , plane mirror , hexagonal crystal system , physics , optoelectronics , composite material , chemistry , quantum mechanics , crystallography

A 1.5 m×1.8 m rectangular composite mirror composed of 138 segment hexagonal spherical mirrors was constructed for collecting Thomson scattered light from the Large Helical Device plasma. The hexagonal mirrors with side length of 87 mm were patched on the surface of a framework made of glass fiber reinforced plastic. The position and angular orientation of each mirror are adjusted with three pairs of push-and-pull screws attached to the back plane of the mirrors so that the image of a tiny light source (0.1 mm in diameter) formed by each segment mirror be minimized and coincide with each other on a charge coupled device plate. The optical quality and its long-term stability of the assembled mirror have been monitored and sufficient for the present purpose

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