Absolute measurements of light impurities line radiation using MLM - based spectrometer on CASTOR tokamak

.-4 multilayer mirror (MLM) banal tingle channel spectrometer has been built and is operated as an impurities monitor on the CASTOR tokamak. The spectrometer cows two wavelength ianges, namely Ц-Ц A with a spectral resolution 0.5-1.0 A and 31-45 A with the spectral resolution 1.2-1.5 A . depending on the mirror that, arc used. IVie main spectrometer elements of MLM's, filters and a detector were absolutely calibrated in both wane ranges. Absolute intensities of spectral lines of He-like and II-likc Oxygen and Carbon ions were measured by this diagnostic technique with a lime resolution 0.1 ms on the smallscale CASTOR tokamak in several regimes of the Ohmic discharge. / ^ « ' / ^ ' 2 / * £ г . fnfi, Ms.