Abstract
This report describes a conceptual design of Lower Hybrid Wave (LH) system for FER and ITER. In JAERI, the conceptual design of LH system for FER has been performed in these 3 years in parallel to that of ITER. There must be a common design part with ITER and FER. The physical requirement of LH system is the saving of volt {center_dot} sec in the current start-up phase, and the current drive at the boundary region. The frequency of 5GHz is mainly chosen for avoidance of the {alpha} particle absorption and for the availability of electron tube development. Seventy-two klystrons (FER) and one hundred klystrons (ITER) are necessary to inject the 30 MW (FER) and 45-50 MW (ITER) rf power into plasma using 0.7 - 0.8 MW klystron per one tube. The launching system is the multi-junction type and the rf spectrum must be as sharp as possible with high directivity to improve the current drive efficiency. One port (FER) and two ports (ITER) are used and the injection direction is in horizontal, in which the analysis of the ray-tracing code and the better coupling of LH wave is considered. The transmission line is over-sized waveguide with low rf loss.
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Uehara, Kazuya;
Nagashima, Takashi;
Ikeda, Yoshitaka
[1]
- Japan Atomic Energy Research Inst., Naka, Ibaraki (Japan). Naka Fusion Research Establishment; and others
Citation Formats
Uehara, Kazuya, Nagashima, Takashi, and Ikeda, Yoshitaka.
Conceptual design Fusion Experimental Reactor (FER/ITER). Lower Hybrid Wave system.
Japan: N. p.,
1991.
Web.
Uehara, Kazuya, Nagashima, Takashi, & Ikeda, Yoshitaka.
Conceptual design Fusion Experimental Reactor (FER/ITER). Lower Hybrid Wave system.
Japan.
Uehara, Kazuya, Nagashima, Takashi, and Ikeda, Yoshitaka.
1991.
"Conceptual design Fusion Experimental Reactor (FER/ITER). Lower Hybrid Wave system."
Japan.
@misc{etde_10126226,
title = {Conceptual design Fusion Experimental Reactor (FER/ITER). Lower Hybrid Wave system}
author = {Uehara, Kazuya, Nagashima, Takashi, and Ikeda, Yoshitaka}
abstractNote = {This report describes a conceptual design of Lower Hybrid Wave (LH) system for FER and ITER. In JAERI, the conceptual design of LH system for FER has been performed in these 3 years in parallel to that of ITER. There must be a common design part with ITER and FER. The physical requirement of LH system is the saving of volt {center_dot} sec in the current start-up phase, and the current drive at the boundary region. The frequency of 5GHz is mainly chosen for avoidance of the {alpha} particle absorption and for the availability of electron tube development. Seventy-two klystrons (FER) and one hundred klystrons (ITER) are necessary to inject the 30 MW (FER) and 45-50 MW (ITER) rf power into plasma using 0.7 - 0.8 MW klystron per one tube. The launching system is the multi-junction type and the rf spectrum must be as sharp as possible with high directivity to improve the current drive efficiency. One port (FER) and two ports (ITER) are used and the injection direction is in horizontal, in which the analysis of the ray-tracing code and the better coupling of LH wave is considered. The transmission line is over-sized waveguide with low rf loss. (author).}
place = {Japan}
year = {1991}
month = {Nov}
}
title = {Conceptual design Fusion Experimental Reactor (FER/ITER). Lower Hybrid Wave system}
author = {Uehara, Kazuya, Nagashima, Takashi, and Ikeda, Yoshitaka}
abstractNote = {This report describes a conceptual design of Lower Hybrid Wave (LH) system for FER and ITER. In JAERI, the conceptual design of LH system for FER has been performed in these 3 years in parallel to that of ITER. There must be a common design part with ITER and FER. The physical requirement of LH system is the saving of volt {center_dot} sec in the current start-up phase, and the current drive at the boundary region. The frequency of 5GHz is mainly chosen for avoidance of the {alpha} particle absorption and for the availability of electron tube development. Seventy-two klystrons (FER) and one hundred klystrons (ITER) are necessary to inject the 30 MW (FER) and 45-50 MW (ITER) rf power into plasma using 0.7 - 0.8 MW klystron per one tube. The launching system is the multi-junction type and the rf spectrum must be as sharp as possible with high directivity to improve the current drive efficiency. One port (FER) and two ports (ITER) are used and the injection direction is in horizontal, in which the analysis of the ray-tracing code and the better coupling of LH wave is considered. The transmission line is over-sized waveguide with low rf loss. (author).}
place = {Japan}
year = {1991}
month = {Nov}
}