Setup and Calibration of a Normal Incidence Spectrometer for use on the CTIX

Spectroscopy is a powerful diagnostic tool for examining plasmas and their behavior. In particular, it can be used to determine plasma composition and velocity. I will present the procedure for preparing a normal incidence spectrometer for use on the Compact Torus Injection Experiment (CTIX). The spectrometer uses a 300 line/mm grating and a liquid nitrogen cooled, thinned, back-illuminated charge coupled device (CCD) detector with 1340x1300 pixels of 20 $\mu $m x 20 $\mu $m area per pixel and has a spectral coverage from extreme ultra-violet to visible. To ensure the highest precision possible for this geometry, I focus the spectrometer, imaging the 100 $\mu $m slit onto the CCD camera. Then, the spectrometer is calibrated for wavelengths between 300 nm and 800 nm using a Hg lamp light source. The background noise from the CCD camera is characterized and accounted for during the Hg spectral analysis.