Xu P, Irby J H, Bergerson W F, Bosco J, Brower D L, Ding W X, Kanojia A, Leccacorvi R, Mansfield D K, Marmar E S, Michael P, Murray R, Rokhman Y, Vieira R
Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Rev Sci Instrum. 2010 Oct;81(10):10D507. doi: 10.1063/1.3466803.
A poloidally viewing far infrared polarimeter diagnostic is being developed for the Alcator C-Mod tokamak, and will be used to determine the q-profile and to study density and magnetic field fluctuations. A three-chord version of what will eventually be up to a ten-chord system has been designed and fabricated and will be installed on C-Mod before the end of the current run period. Bench tests of a single chord mock-up of this system show acceptable noise levels for the planned measurements. We will discuss the analysis and experimental techniques used to diagnose and reduce noise sources.
正在为阿尔卡特C-Mod托卡马克研发一种极向观测远红外偏振计诊断设备，它将用于确定q剖面并研究密度和磁场涨落。最终将形成一个多达十弦系统的三弦版本已经设计并制造完成，将在当前运行期结束前安装在C-Mod上。该系统单弦模型的台架测试表明，对于计划中的测量，其噪声水平是可接受的。我们将讨论用于诊断和降低噪声源的分析和实验技术。
