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Diagnostics complex is an important part of any modern tokamak or stellarator. Charge exchange recombination spectroscopy (CXRS) diagnostics is used to measure local values of ion temperature, impurities density and plasma rotation velocity. The first CXRS systems were developed in the late 1970s [1] and now CXRS is widely used on tokamaks. It was shown [2] that CXRS will work on ITER and it will be one of the most important diagnostics, because it would be used to measure all main plasma parameters determining the efficiency of the fusion reaction. The basic principles of CXRS are described in [3, 4]. This work presents CXRS-Edge diagnostics for ITER. The CXRS spectra modelling for ITER tokamak is considered. The main principles of spectra modelling in presence of the diagnostic neutral beam are discussed. Simulation of Spectra code, created specially for CXRS modelling is described. Spectral profiles, calculated for ITER scenario are presented. The main challenges of CXRS modelling for ITER are described. It is shown that CXRS-Edge diagnostics will allow performing an ion temperature, impurities density and rotation velocity measurements in accordance with ITER requirements.

ITER PLASMA SPECTRA MODELLING FOR CHARGE EXCHANGE RECOMBINATION SPECTROSCOPY USING ADAS CODE