Development of high-power, long-pulse, multi-frequency ECH/CD system for JT-60SA
Development of high-power, long-pulse, multi-frequency ECH/CD system for JT-60SA
复制标题
JT-60SA大功率、长脉冲、多频ECH/CD系统的开发
DOI：
10.1088/1741-4326/ac42f4
复制
发表时间：
2021
期刊：
影响因子：
3.3
通讯作者：
S. Moriayama
中科院分区：
文献类型：
--
作者：
T. Kobayashi;H. Yamazaki;S. Hiranai;M. Sawahata;M. Terakado;K. Ishita;J. Hinata;F. Sato;K. Wada;N. Toida;R. Ikeda;T. Shinya;S. Yajima;K. Kajiwara;K. Takahashi;S. Moriayama
为JT-60 SA多频电子回旋加热和电流驱动系统研制成功了回旋管和匹配光学单元。回旋管在110 GHz的1.5 MW 5 s和1.9 MW 1 s的高功率下稳定运行。为了在ECH/CD发射器中的波导的出口处获得高的HE 11模式纯度（>90%），已经开发了用于在82 GHz、110 GHz和138 GHz的三个频率下操作的MOU，其包括三对水冷相位校正镜，这允许在不打开抽空的MOU的情况下更换镜。在高功率下，对传输线中虚拟负载入口处的模式纯度进行了评估，并在三个频率下获得了>90%的HE 11模式纯度。
A gyrotron and a matching optics unit (MOU) for the multi-frequency electron cyclotron heating and current drive (ECH/CD) system in JT-60SA have been developed successfully. The gyrotron demonstrated stable operation at high powers of 1.5 MW for 5 s and 1.9 MW for 1 s at 110 GHz. To obtain high HE11 mode purity (>90%) at the outlet of the waveguide in the ECH/CD launcher, a MOU for operating at three frequencies of 82 GHz, 110 GHz, and 138 GHz that includes three pairs of water-cooled phase correcting mirrors has been developed, which allows the mirrors to be changed without opening the evacuated MOU. The mode purity at the inlet of a dummy load in the transmission line was evaluated at high-power and an HE11 mode purity of >90% was obtained at three frequencies.