SUMMARY OF EBW THEORETICAL CALCULATIONS IN THE TJ-II STELLARATOR

An overview of the main Electron Bernstein Waves (EBW) theoretical results obtained in the TJ–II stellarator is presented. Firstly, former studies helping us to determine the best excitation scheme are discussed. Next, we describe the procedure used to find the optimum launching position and direction of the injected power, as well as the ray tracing optimization method that was developed to find the optimum launched beam. The 2D full-wave simulations that were performed in order to check the beam ray tracing optimization results are also presented. Final topics are devoted to the comparison between relativistic and non-relativistic ray tracing calculations and to the preliminary transport simulations performed with the ASTRA system. Plans for future work are briefly outlined. [Spanish MCyT project ENE2004-06957/FTN].