Bohm P, Sestak D, Bilkova P, Aftanas M, Weinzettl V, Hron M, Panek R, Baillon L, Dunstan M R, Naylor G, Walsh M J
Institute of Plasma Physics AS CR, v.v.i., EURATOM IPP.CR, Za Slovankou 1782/3, 18200 Prague 8, Czech Republic.
Rev Sci Instrum. 2010 Oct;81(10):10D511. doi: 10.1063/1.3460450.
A new Thomson scattering diagnostic has been designed and is currently being installed on the COMPASS tokamak in IPP Prague in the Czech Republic. The requirements for this system are very stringent with approximately 3 mm spatial resolution at the plasma edge. A critical part of this diagnostic is the laser source. To achieve the specified parameters, a multilaser solution is utilized. Two 30 Hz 1.5 J Nd:YAG laser systems, used at the fundamental wavelength of 1064 nm, are located outside the tokamak area at a distance of 20 m from the tokamak. The design of the laser beam transport path is presented. The approach leading to a final choice of optimal focusing optics is given. As well as the beam path to the tokamak, a test path of the same optical length was built. Performance tests of the laser system carried out using the test path are described.
一种新型汤姆逊散射诊断仪已设计完成，目前正在捷克共和国布拉格等离子体物理研究所的COMPASS托卡马克装置上进行安装。该系统的要求非常严格，在等离子体边缘的空间分辨率约为3毫米。该诊断仪的一个关键部分是激光源。为了达到规定参数，采用了多激光解决方案。两台30赫兹、1.5焦耳的Nd:YAG激光系统，工作在1064纳米的基波波长，位于托卡马克区域外，距离托卡马克20米处。介绍了激光束传输路径的设计。给出了最终选择最佳聚焦光学器件的方法。除了通往托卡马克的光束路径外，还构建了一条相同光学长度的测试路径。描述了使用该测试路径对激光系统进行的性能测试。
