Visible spectrometer at the Compact Toroid Injection Experiment and the Alcator C-Mod tokamak for Doppler width and shift measurements
- University of California at Davis, One Shields Avenue, Davis, California 95616 (United States)
A novel Doppler spectrometer is currently being used for ion or neutral velocity and temperature measurements on the Alcator C-Mod tokamak. The spectrometer has an f{approx}3.1 and is appropriate for visible light (3500-6700 A). The linewidth from a line emitting calibration source has been measured to be as small as 0.4 A ring . The ultimate time resolution is line brightness light limited and on the order of milliseconds. A new photon efficient charge coupled device detector is being used at C-Mod. Time resolution is achieved by moving the camera during a plasma discharge in a perpendicular direction through the dispersion plane of the spectrometer, causing a vertical streaking across the camera face. Initial results from C-Mod as well as previous measurements from the Compact Toroid Injection Experiment are presented.
- OSTI ID:
- 20861323
- Journal Information:
- Review of Scientific Instruments, Vol. 77, Issue 10; Other Information: DOI: 10.1063/1.2349824; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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