Two-dimensional full wave simulation of microwave reflectometry on Alcator C-Mod
نویسندگان
چکیده
A new 2-D full-wave code has been developed to simulate ordinary (O) mode reflectometry signals caused by plasma density fluctuations. The code uses the finite-difference time-domain method with a perfectly-matched-layer absorption boundary to solve Maxwell’s equations. Huygens wave sources are incorporated to generate Gaussian beams. The code has been used to simulate the reflectometer measurement of the quasi-coherent mode (60−250 kHz) associated with Enhanced Dα (EDA) H-modes in the Alcator C-Mod tokamak. It is found that an analysis of the realistic experimental layout is essential for the quantitative interpretation of the mode amplitude.
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