燃烧等离子体装置中偏振干涉仪波导柔性结构研究  

Study on the Flexible Structure of the Polarization Interferometer Waveguide in Combustion Plasma Device

作　　者：王刚[1] 连辉 许吉禅 刘海庆 张际波 Wang Gang;Lian Hui;Xu Jichan;Liu Haiqing;Zhang Jibo(School of Mechatronics Engineering,Anhui University of Science and Technology,Huainan,Anhui 232001,China;Institute of Plasma Physics,Chinese Academy of Sciences,Hefei,Anhui 230031,China)

机构地区：[1]安徽理工大学机电工程学院,安徽淮南232001 [2]中国科学院等离子体物理研究所,安徽合肥230031

出　　处：《黑龙江工业学院学报(综合版)》2025年第2期144-149,共6页Journal of Heilongjiang University of Technology(Comprehensive Edition)

基　　金：安徽省重大专项基金项目“先进诊断核心技术攻关”(项目编号:E35AH205B3)。

摘　　要：在磁约束聚变研究中,偏振干涉仪系统对于等离子体电子密度和电流分布的有效测量使其成为众多装置上关键的诊断系统之一。波导结构承担了将测量光束从激光房传输到具有复杂电磁环境的装置大厅的作用,每次实验周期开始前需要对测量光束进行人工校准以保证测量光束的准直性。在未来燃烧等离子体装置中,等离子体放电会伴随更为复杂的电磁辐射以及射线辐射,不具备人为校准的条件。针对这一问题,通过确定波导发生偏移的运动轨迹设计了一款连接结构—柔性结构。该设计包括选择运动机构、构建三维模型、力学分析、加工实物和实验分析部分,经实验验证表明柔性结构光线补偿能力可以达到μrad量级,可满足未来聚变堆偏振干涉仪对于光路系统自我修正的需求。In magnetic confinement fusion study,the polarization-interferometer system is one of the critical diagnostic systems on various devices due to its effective measurement of plasma electron density and current distribution.The waveguide structure serves to transmit the measurement laser beam from the laser lab to the device hall with a complex electromagnetic environment.Before each experimental cycle,manual calibration is required to ensure the collimation of the measuring beam.In future burning plasma devices,plasma discharges will be accompanied by more complex electromagnetic and radiation environments,making manual calibration impractical.To address this issue,a flexible connecting structure was designed by determining the motion trajectory of waveguide misalignment.This design includes the selection of a motion mechanism,3D modeling,mechanical analysis,physical machining,and experimental validation.Experimental results demonstrate that the flexible structure achieves a light compensation capability at theμrad level,meeting the demand for self-correction in the optical system of polarization-interferometers in future fusion reactors.

关 键 词：燃烧等离子体 波导 光线传播 光路偏差 柔性结构 

分 类 号：TH122[机械工程—机械设计及理论] TL631.24[核科学技术—核技术及应用]