地球与行星物理论评（中英文）2024，Vol.55Issue(3)：317-328,12.DOI:10.19975/j.dqyxx.2023-040
无碰撞磁场重联地面实验平台的研制与建设
Design and construction of Keda collisionless Reconnection eXperiment
摘要
Abstract
The collisionless Keda Reconnection eXperiment(KRX)is a comprehensive platform for ground-base simulations of basic physical processes in a space environment.Its purpose is to reveal the triggering mechanism and electron diffusion structure of collisionless magnetic field reconnection and to study the associated plasma waves.The KRX is a linear device with a capsule-shaped vacuum chamber of 3 m diameter and composed of several sections.The world's largest oxide cathode source(2 m×1 m)was used to produce a uniform background plasma.The KRX was surrounded by ten groups of guided field magnetic coils.Meanwhile,the reconnection magnetic field configuration was constructed using two parallel current plates with the same pulse current,which were installed on the upper and lower parts of the device.In addition,the pulse power supply adopted an H-shaped bridge structure to realize the controllable variable rate reconnection drive.More than 200 vacuum windows surround the device.The magnetic-field reconnection process can be measured using a probe array and other advanced optical diagnostics,including a THz polarimeter/interferometer and laser-induced fluorescence.KRX is the latest generation of magnetic-reconnection experiment platforms and is particularly useful for collisionless magnetic reconnection experiments.The reconnection area reaches 10 times the ion inertia length,and the Lundquist number is expected to reach 105.Global,active,and high-precision diagnostic measurements make multiscale,comprehensive research on magnetic field reconnection possible by addressing the shortcomings of satellite observations and numerical simulations.At present,the construction of the experimental platform and key components,such as diagnostics,have been com-pleted.A research scheme of multi-scale,multi-magnetic island merger,3D magnetic field reconnection,and other important issues is proposed based on the preliminary small-scale results of the research device.关键词
空间环境/磁场重联/等离子体装置/地面实验Key words
space environment/magnetic reconnection/plasma device/ground-base experiment分类
地球科学引用本文复制引用
张乔枫,谢锦林,桑龙龙,杨发,唐磊,白子逸,刘悠然,胡市航,陆全明..无碰撞磁场重联地面实验平台的研制与建设[J].地球与行星物理论评（中英文）,2024,55(3):317-328,12.基金项目
国家自然科学基金资助项目(42230201) （42230201）
国家重点研发计划资助项目(2022YFA1604600) （2022YFA1604600）
中国科学院战略性先导科技专项(XDB 41000000)Supported by the National Natural Science Foundation of China(Grant No.42230201),the National Key Research and Develop-ment Program of China(Grant No.2022YFA1604600),and the Strategic Priority Research Program of the Chinese Academy of Sci-ences(Grant No.XDB 41000000) （XDB 41000000）
