MAST YAG Thomson scattering upgrade alignment system.
MAST YAG Thomson scattering upgrade alignment system.
复制标题
MAST YAG 汤姆森散射升级对准系统。
DOI：
10.1063/1.3475377
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
F. Serra
中科院分区：
文献类型：
--
作者：
João Figueiredo;G. Naylor;Michael Walsh;M. Dunstan;R. Scannell;F. Serra
最近对MAST YAG汤姆逊散射的升级在增强诊断能力的同时增加了系统的复杂性。现在有八个YAG激光器在运行，比以前的设置增加了一倍。这意味着每个激光器与参考点之间的对准对于保证数据质量和诊断可靠性至关重要。为了解决这个问题，最近安装了一个校准系统。它模拟MAST中的光束对准，通过采样1%的激光束发送到望远镜中，望远镜缩小8倍。用CCD摄像机观察缩小的光束。通过扫描相机，可以确定散射区和MAST内几米范围内的光束的轮廓和位置。因此，可以沿着光束路径检查对准，而不必在容器内对其进行采样。介绍了实验装置和实验过程。
The recent upgrade to the MAST YAG Thomson scattering while enhancing the diagnostic capabilities increased the complexity of the system. There are eight YAG lasers now operational, doubling the number from the previous setup. This means alignment between each laser individually and reference points is essential to guarantee data quality and diagnostic reliability. To address this issue an alignment system was recently installed. It mimics the beams alignment in MAST by sampling 1% of the laser beam that is sent into a telescope which demagnifies by a factor of 8. The demagnified beam is viewed with a CCD camera. By scanning the camera the profile and position of the beams in the scattering zone and in a range of several meters inside MAST can be determined. Therefore alignment is checked along the beam path without having to sample it inside the vessel. The experimental apparatus and test procedures are described.