The Hfctr Demonstration Reactor Design Study: Advantages of High Force Density Magnets and Total Modularization
نویسنده
چکیده
High resolution (AX/X z .015) x-ray spectra in the wavelength region 3.7 6.2 A (3.4 + 2.0 keV) have been collected from the Alcator tokamak using a flat crystal Bragg monochromator. Molybdenum L lines and chlorine K lines have been observed and charge state identifications have been made by comparison with calculations. I. Detection System A flat crystal monochromator with a pentaerythritol (PET, 2d = 8.742 A) crystal has been installed on the Alcator A tokamak. A proportional counter was used as the photon detector and overall time resolution of the detection system was about 100 ps. Spectra have been obtained by scanning in wavelength on a shot to shot basis during a sequence of identical discharges. Wavelength calibration was achieved by using the L series of Mo produced by a Henke tube. Accuracy of wavelength determinations is about
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