基于射频波技术的新型失超检测方法  

A Novel Quench Detection Method using Radio Frequency Wave Technology

作　　者：余彬 胡燕兰[1] YU Bin;HU Yanlan(Institute of Plasma Physics, Chinese Academy of Sciences,Hefei 230031, China;Hefei institutes of Physical Science, University of Science and Technology of China,Hefei 230026, China)

机构地区：[1]中国科学院等离子体物理研究所,合肥230031 [2]中国科学技术大学,合肥230026

出　　处：《低温物理学报》2019年第1期28-32,共5页Low Temperature Physical Letters

基　　金：国家磁约束核聚变能发展研究专项(批准号:2014GB105004)资助的课题

摘　　要：失超检测对于大型超导装置(例如EAST、ITER等全超导托克马克聚变装置)的长期稳态运行至关重要.本文目的是探索一种新型失超检测方法(射频波法)并评估其实际使用价值.首次将射频波技术应用于失超检测,根据射频传输线理论,设计了一套新型失超检测系统.通过端电压和射频失超检测方法同时检测Bi2223带材绕制的线圈的失超情况,以电压法作为参考依据评判射频检测方法的效果.多次实验证明,射频波法能够用于失超检测,在线圈电阻变为几十个微欧的时候就能够检测出失超.在小线圈上实现可重复检测实验.并在实验中获得了很多有用的信息以进一步改进该方法.Quench detection is very important for long-term steady-state operation of large superconductivity devices such as EAST, ITER, and other full superconductivity Tokemac fusion devices. The purpose of this paper is to explore a new type of quench detection method (RF method) and evaluate its practical use value. For the first time, radio frequency wave technology is applied to quench detection. According to the theory of radio frequency transmission line, a new type of quench detection system is designed. The terminal voltage and RF quench detection method are used to simultaneously detect the quench condition of the coil wound by Bi2223 strip. The voltage method is used as a reference to judge the effect of the radio frequency detection method. Many experiments have proved that the RF wave method can be used for quench detection, and the quench can be detected when the coil resistance becomes several tens of μΩ. Repeatable detection experiments were performed on the small coils. And a lot of useful information was obtained in the experiments to further improve the method.

关 键 词：失超检测 Bi2223线圈 射频波 

分 类 号：TL631.24[核科学技术—核技术及应用]