Sung C, White A E, Irby J H, Leccacorvi R, Vieira R, Oi C Y, Peebles W A, Nguyen X
Plasma Science and Fusion Center, MIT, Cambridge, Massachusetts 02139, USA.
Rev Sci Instrum. 2012 Oct;83(10):10E311. doi: 10.1063/1.4731750.
A correlation electron cyclotron emission (CECE) diagnostic has been installed in Alcator C-Mod. In order to measure electron temperature fluctuations, this diagnostic uses a spectral decorrelation technique. Constraints obtained with nonlinear gyrokinetic simulations guided the design of the optical system and receiver. The CECE diagnostic is designed to measure temperature fluctuations which have k(θ) ≤ 4.8 cm(-1) (k(θ)ρ(s) < 0.5) using a well-focused beam pattern. Because the CECE diagnostic is a dedicated turbulence diagnostic, the optical system is also flexible, which allows for various collimating lenses and antenna to be used. The system overview and the demonstration of its operability as designed are presented in this paper.
阿尔卡特C-Mod装置已安装了一台相关电子回旋辐射（CECE）诊断设备。为了测量电子温度涨落，该诊断设备采用了一种频谱去相关技术。非线性回旋动理学模拟得到的约束条件指导了光学系统和接收器的设计。CECE诊断设备旨在使用聚焦良好的波束模式测量k(θ) ≤ 4.8 cm⁻¹（k(θ)ρ(s) < 0.5）的温度涨落。由于CECE诊断设备是一种专门用于湍流诊断的设备，其光学系统也具有灵活性，允许使用各种准直透镜和天线。本文介绍了该系统的概述及其按设计的可操作性演示。
