Abstract
The novel cost effective 2-D ion temperature measurement system was developed by use of tomographic reconstruction of 35 line-integrated spectrums on five toroidal plane. Those 5×7 signals were measured by a polychromator with 35 optical fibers and ICCD camera and were transformed into local line-spectrum on the r-z plane by means of the Abel inversion at each wavelength. The 2-D(r-z) profile of ion temperature on r-z plane was finally calculated from the Gaussian fitting for the local spectrums.
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