Dual laser interferometer for plasma density measurements on large tokamaks.
نویسندگان
چکیده
A two-wavelength plasma density interferometer utilizing a CO(2) laser and an HeNe laser is described. The interferometer is being designed for use on Doublet III, a large noncircular cross-section tokamak. The use of the two wavelengths allows the distinction between fringe shifts due to plasma density and fringe shifts due to mirror vibrations. Plasma density fringe shifts of 1/10 of a fringe shift can be measured in the presence of mirror vibrations which cause several fringe shifts. A simple digital phase comparing electronic system is used.
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ورودعنوان ژورنال:
- The Review of scientific instruments
دوره 49 7 شماره
صفحات -
تاریخ انتشار 1978