Extension of the multi-frequency ECRH system at ASDEX upgrade

oleh: Wagner D., Stober J., Kircher M., Leuterer F., Monaco F., Münich M., Schubert M., Zohm H., Gantenbein G., Jelonnek J., Thumm M., Meier A., Scherer T., Strauss D., Kasparek W., Lechte C., Plaum B., Zach A., Litvak A.G., Denisov G.G., Chirkov A., Malygin V., Popov L.G., Nichiporenko V.O., Myasnikov V.E., Tai E.M., Solyanova E.A., Malygin S.A.