CFETR微波诊断预研与设计进展

针对最新的中国聚变工程实验堆(CFETR)零维物理设计参数,对微波诊断进行了研究以及设计工作。为了能够得到完整的密度分布,微波反射计需要同时在高场侧和低场侧进行测量,并采用寻常模以及左旋和右旋非寻常模结合的方式。电子回旋辐射一次谐频的寻常模用来测量芯部电子温度分布,而二次谐频的非寻常模测量能提供边缘温度分布。为了验证新技术在CFETR上的可用性,EAST装置上发展了基于频率选择表面的多波段耦合器,为CFETR的多波段耦合的技术需求提供了可行的预研解决方案。

Progress of research and design of microwave diagnostics on CFETR

Based on parameters of the recent zero-dimensional design of CFETR the research and design for microwave diagnostics are conducted. The reflectometry system works with a combination of both O-mode and X-mode. Besides, the measurement is conducted on high field side and low field side simultaneously in order to obtain the entire density profile. O-mode of the first harmonic of electron cyclotron emission (ECE) is used to measure the core electron temperature profile while X-mode measurement of the second harmonic can provide the edge temperature profile. In order to verify the applicability of the new technique on CFETR, a multi-band coupler based on the frequency select surfaces has been developed on EAST to offer the feasible solution for the multi-band coupling technical requirement on CFETR.