通过软X射线信号研究芯部等离子体的结构

Study of central plasma structure using soft X-ray signals

介绍了如何从软X射线原始信号上分析等离子体芯部磁场结构的方法.在HT-7托卡马克上,通过分析一炮典型的放电数据,直接从软X射线原始信号上分析了磁岛的位置和旋转方向.通过软X射线图像反演的结果和Mirnov信号上观察到的m=2模的走向验证了磁岛旋转的方向和位置.

A method for studying the central plasma structure using soft X-ray signals in the HT-7 tokamak is reported. Through analysing a typical discharge with MHD instability, the position and rotation direction of magnetic island are obtained from the soft X-ray signals. The magnetic island position and rotation direction are validated from the contour map of soft X-ray emissivity and the m=2 mode rotation direction observed on the Mirnov signals.