Initial measurements of plasma current and electron density profiles using a polarimeter/interferometer (POINT) for long pulse operation in EAST (invited).
Initial measurements of plasma current and electron density profiles using a polarimeter/interferometer (POINT) for long pulse operation in EAST (invited).
复制标题
DOI：
10.1063/1.4963378
复制
发表时间：
2016-11
期刊：
影响因子：
--
通讯作者：
H. Liu;J. Qian;Y. Jie;W. Ding;D. Brower;Z. Zou;W. Li;H. Lian;S. X. Wang;Y. Yang
中科院分区：
文献类型：
--
作者：
H. Liu;J. Qian;Y. Jie;W. Ding;D. Brower;Z. Zou;W. Li;H. Lian;S. X. Wang;Y. Yang
在实验性的高级超导导向Tokamak（EAST）中，已经实施了使用三波技术的双通观察，远红外激光的偏光计（点）系统。在最近的实验活动中，Point已定期运行，并为所有加热方案和所有等离子体条件（包括相关的场景开发）提供了整个等离子体放电的连续11个和弦线集成的法拉第效应和密度测量。在25 s的等离子体中，具有H模式和102 s长脉冲放电的25 s等离子体证明了极化和干涉测量的可靠性。使用平衡拟合代码（EFIT）重建电流密度，安全系数（Q）和电子密度曲线，并具有对等离子体核心的点约束。
A double-pass, radially viewing, far-infrared laser-based POlarimeter-INTerferometer (POINT) system utilizing the three-wave technique has been implemented for diagnosing the plasma current and electron density profiles in the Experimental Advanced Superconducting Tokamak (EAST). POINT has been operated routinely during the most recent experimental campaign and provides continuous 11 chord line-integrated Faraday effect and density measurement throughout the entire plasma discharge for all heating schemes and all plasma conditions (including ITER relevant scenario development). Reliability of both the polarimetric and interferometric measurements is demonstrated in 25 s plasmas with H-mode and 102 s long-pulse discharges. Current density, safety factor (q), and electron density profiles are reconstructed using equilibrium fitting code (EFIT) with POINT constraints for the plasma core.