Study on high efficiency local electron cyclotron current drive in high toroidal field tokamak

在未来核聚变动力装置必不可少的项目之一--电流驱动方法的发展过程中，开展了获得高效率、高局域性的电流驱动方法的研究。1）在高环向场超导托卡马克（TRIAM-1 M）上，利用170 GHz高功率微波系统，进行了基波X模电子回旋电流驱动（ECCD）实验。结果表明，基模X模ECCD具有高效率和高局域性; 2）利用ASK/WR程序计算了微波吸收功率，并利用其值估算了电流驱动效率; 3）ITER中的遥控天线，并在TRIAM-1 M高功率实验中验证了其性能。4）同视硬X-5）在CPD上进行了电子伯恩斯坦波（EBW）电流驱动实验，在3 kA的等离子体电流驱动下，能够启动LHCD等离子体，并在实验中得到了LHCD等离子体的电流分布。6）研制了一种具有微波注入角和极化方向可控的天线，并成功地验证了其良好的性能。

In the way of the development of the current drive method which is the one of essential item for future fusion power plants, the study to get the current drive method with high-efficiency and high locality was executed. Main results are shown as the followings1) On high toroidal field superconducting tokamak, TRIAM-1M, fundamental X-mode electron cyclotron current drive (ECCD) experiments were carried out by use of 170GHz high power microwave system. As the results, fundamental X-mode ECCD has high efficiency and high locality.2) The absorption power of microwave was calculated by TASK/WR code and its value was used to estimate the current drive efficiency.3)The remote steering antenna, which is useful in ITER, was developed and its performance was made sure in TRIAM-1M high power experiments.4)Identical view hard X-ray measurement system to estimate current profile in LHCD plasma was developed and the current profile was measured in an LHCD plasma.5)Electron Bernstain wave (EBW) current drive experiments were executed on CPD and plasma current of 3kA was able to start-up by use of 8.2GHz microwave system without the assist of ohmic heating.6)The antenna, which has the capability of control of injection angle and polarization of microwave, was developed and its good performance was demonstrated successfully.