Plasma Confinement Study related to Distortion of Velocity Distribution using Broadband N//-scanning ECE measurements

(1)扩展N//工作区的方形波纹波导天线系统的研制本文编制了扩展N//工作区的方形波纹波导天线的激励/耦合、传输和辐射的积分程序。此外，还开发了一种新的方法，从测量的振幅和相位分布来分析模式激励/传播。利用所开发的积分程序和方法对方形波纹波导天线的性能进行了分析，证实了其在倾斜ECE测量中的有效性。(2)TRIAM-1 M托卡马克上的ECH/ECCD实验和ECE测量为了评估在托卡马克上的ECH/ECCD实验中的沉积功率，使用了ASK/WR程序，包括高能电子速度分布的畸变效应。由计算的功率和驱动电流推导出电流驱动效率，并计算了方形波纹波导天线的效率。 ...更多信息 与传统天线系统的情况相当，在托克马克装置上测量了高频、宽带ECA。在测量中，方形波纹波导天线系统被成功地用于超过布拉格极限。(3)宽带DSB辐射计的研制新研制的DSB辐射计用于宽带ECE测量。本振部分采用快速频率转换（10μs）频率合成器和微波倍频电路。低频本振部分用于3个谐波辐射计。较低的频率乘以毫米乘数根据谐波数。(4)ECE测量和运输研究的LHDA基本正常模式ECE测量在ECH实验中在LHD。利用自行研制的DSB辐射计测量了电子温度剖面随时间的演化，观察到了内部输运势垒的崩溃。研制的辐射计对研究等离子体约束和热输运是有效的。少

(1) Development of Square Corrugated Waveguide Antenna System with Extended N// Operation RegionAn integration code to teat an excitation/coupling, propagation and radiation at a square corrugated waveguide antenna with extended N// operation region was prepared. A new method was additionally developed to analyze the mode excitation/propagation from measured amplitude and phase profiles. The performance of the square corrugated waveguide antenna was analyzed using the integration code and developed method, and its availability for oblique ECE measurements was confirmed.(2) ECH/ECCD experiments and ECE measurements on the TRIAM-1M tokamakIn order to evaluate deposited power in ECH/ECCD experiments on the tokamak, the TASK/WR code was used, including the distortion effect in a velocity distribution on high energetic electrons. The current drive efficiency was derived from the evaluated power and the driven current The estimated efficiency at the square corrugated waveguide antenna was co … More mparable to that at the traditional antenna system.The high frequency and broadband ECE was measured at the tokamak. In the measurements, the square corrugated waveguide antenna system was successfully used beyond Bragg limit.(3) Development of Broadband DSB radiometerA DSB radiometer was newly developed for broadband ECE measurements. The fast frequency-switching (10μs) synthesizer and microwave frequency-multipliers were used in the lower-frequency local oscillator(LO)part. The lower-frequency LO part was used for 3 harmonic radiometers in common. The lower frequencies were multiplied by the millimeter multiplier in accordance with harmonic numbers.(4) ECE measurements and Transport Study on the LHDA fundamental ordinary-mode ECE was measured in the ECH experiments at the LHD. The crash of an internal transport barrier was observed in the time evolution of the electron temperature profile, which are measured by the developed DSB radiometer. The developed radiometer has been effective to study the plasma confinement and the heat transport. Less