Simplified overview diagram of MSE-LIF system installation on the NSTX platform.
Diagram showing MSE-LIF viewing optics system in NSTX.
Calculated and measured MSE-LIF radial channel locations in NSTX.
Layout of diode laser, collimation optics, and volume holographic grating (VHG) for feedback. Here, the fast-axis collimation lens is labeled FAC, the slow axis collimation lens is labeled SAC, and the corrective phase plate is labeled PP. The individual laser emitters are shown separated by the pitch.
Spectrometer data showing broadband lasing and feedback mode. A calculation of the area under the curve reveals 87% of the total power to be in the feedback mode. The broadband lasing peak is more than two orders of magnitude below the feedback mode peak.
Fabry Perot plot with 11.6 GHz (0.017 nm) Gaussian overlay.
LIF data from channels at the edge (filled disks), near the expected magnetic axis (filled squares), and the inner-most chord (circles). This data has no applied magnetic field.
Data showing variation of measured total MSE spectrum width as applied magnetic field is varied.
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