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

当前驱动方法是未来核聚变电站发展的重要项目之一，在发展当前驱动方法的道路上，对获得高效率、高局部性的当前驱动方法进行了研究。主要结果如下：1)在高环形场超导托卡马克TRIAM-1M上，利用170GHz大功率微波系统进行了基本x模电子回旋加速器电流驱动（ECCD）实验。结果表明，基本x模ECCD具有高效率和高局部性。2)利用TASK/WR程序计算微波吸收功率，并利用其值估算电流驱动效率。3)研制了用于ITER的远程转向天线，并在TRIAM-1M大功率实验中对其性能进行了验证。4)研制了用于估算等离子体电流分布的同视点硬x射线测量系统，并在等离子体中进行了电流分布测量。5)在CPD上进行了电子伯恩斯坦波（EBW）电流驱动实验，利用8.2GHz微波系统无需欧姆加热即可启动3kA等离子体电流。6)研制了具有微波注入角和极化控制能力的天线，并成功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.