X射线小角散射测量中可变温自动换样器  

Variable temperature automatic sample shifting device for X-ray small-angle scattering measurement

作　　者：李海洋 胡海韬[2,3] 段钰锋 白波[2,3] 袁宝[2,3] 孙远 黄志强[2,3] 林权 程贺[2,3] 王晶 张绍英 童欣 LI Haiyang;HU Haitao;DUAN Yufeng;BAI Bo;YUAN Bao;SUN Yuan;HUANG Zhiqiang;LIN Quan;CHENG He;WANG Jing;ZHANG Shaoying;TONG Xin(Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education,School of Energy and Environment,Southeast University,Nanjing 210096,China;Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;Spallation Neutron Source Science Center,Dongguan 523803,China;South China Advanced Institute for Soft Matter Science and Technology,School of Molecular Science and Engineering,South China University of Technology,Guangzhou 510640,China;Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices,South China University of Technology,Guangzhou 510640,China;Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]能源热转换及其过程测控教育部重点实验室,东南大学能源与环境学院,南京210096 [2]中国科学院高能物理研究所,北京100049 [3]散裂中子源科学中心,东莞523803 [4]华南软物质科学与技术高等研究院,华南理工大学分子科学与工程学院,广州510640 [5]广东省功能与智能杂化材料与器件重点实验室,华南理工大学,广州510640 [6]中国科学院物理研究所,北京100190

出　　处：《核技术》2021年第11期12-19,共8页Nuclear Techniques

基　　金：广东省重点领域研发计划项目(No.2019B010941002);中国科学院青年创新促进会(科发人函字[2021]8号);国家自然科学基金面上项目(No.11875107)资助。

摘　　要：变温条件是多数散射实验最广泛的需求,在此基础上引入自动换样技术可显著地提高样品的检测效率。本文设计研发了用于同步辐射小角X射线散射(Small Angle X-Ray Scattering,SAXS)实验的可变温自动换样器,该装置可容纳100个样品,涵盖25~280℃较宽温度范围,控温精度为±1℃。实验过程中,采用二维移动台控制样品切换,采用温控仪及加热元件实现对样品温度的控制,同时编写了适配该装置的温度-行程耦合控制软件,实现远程控制样品切换、远程控温。对样品架的温度分布进行了仿真分析和实验测试。结果表明:该结构设计合理,模拟温度值与测试温度值的最大误差低于2%,可满足SAXS的多样品变温测试需求。[Background]Variable temperature condition is the most extensive requirement in many scattering experiments.Automatic sample shifting technology based on the variable temperature condition can significantly improve the detection efficiency of samples.[Purpose]This study aims to develop a varied temperature automatic sample shifting device for synchrotron radiation small angle X-ray scattering(SAXS)experiment.[Methods]The device was designed to accommodate up to 100 samples,covering a wide temperature range of 25~280°C with temperature control accuracy of±1°C.Two-dimensional mobile platform was used to control sample switching,and the temperature controller and heating element were used to control the sample temperature of experiment.In addition,the temperature-stroke coupling control software suitable for this device was implemented to realize the remote control of sample switching and temperature changing.The structure and the temperature distribution of the sample rack were analyzed by numerical simulation and compared with that of experiment to finalize the appropriate structure for this device.[Results&Conclusions]The maximum error between the simulated temperature and the measured temperature is less than 2%and the structure design is reasonable,satisfying multi-sample variable temperature test requirements for SAXS experiment.

关 键 词：小角X射线散射 自动换样 控温 仿真 设计 

分 类 号：TL99[核科学技术—核技术及应用]