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“荧光-1”是一套分时放电的大电流脉冲功率实验装置,主要用于反场构形预加热磁化等离子体靶(FRC)形成的物理过程、高温高密度磁化等离子体约束特性等研究,未来可作为磁化靶聚变研究的等离子体注入器。主要介绍该实验装置的构成及其调试实验结果,并简要描述在该装置上开展的FRC等离子体靶初步物理实验进展。调试实验结果表明,“荧光-1”实验装置初始磁场、磁镜、气体电离、θ箍缩分系统的放电电流/磁场或感应电场可分别达到110kA/0.3T,10kA/1.2T,400kA/0.25kV/cm,1.7 MA/3.4T。初步物理实验获得的FRC等离子体靶参数为:靶分界面半径约4cm、等离子体密度3.5×1016 cm-3、等离子体温度约200eV、靶寿命约3μs,同时清晰地观察到了FRC靶形成物理过程。分幅相机获取图像与二维磁流体程序计算图像基本吻合,验证了该装置的物理设计思路,也展示了该装置具备的物理实验能力。
Fluorescence-1 is a set of high-current pulsed power experiment equipment that is used for time-division discharge. It is mainly used in the physical process of FRC (magnetron plasma target) with anti-field configuration and high-temperature and high-density magnetization plasma In the future, it can be used as a plasma injector for magnetization target fusion research. The structure of the experimental device and the results of the commissioning experiment are mainly introduced. The preliminary physical experiment of the FRC plasma target carried out on the device is briefly described. The experimental results show that the discharge current / magnetic field or induced electric field of “Fluorescence-1” experimental apparatus can reach 110kA / 0.3T, 10kA / 1.2T and 400kA respectively for initial magnetic field, magnetic mirror, gas ionization, /0.25kV/cm, 1.7 MA / 3.4T. The parameters of the FRC plasma target obtained from the preliminary physical experiment are as follows: the radius of the target interface is about 4 cm, the plasma density is 3.5 × 10 16 cm -3, the plasma temperature is about 200 eV, and the target lifetime is about 3 μs. Meanwhile, the FRC target formation physical process . The images acquired by the framed camera and the two-dimensional magnetohydrodynamic program basically coincide, which verified the physical design idea of the device and demonstrated the physical experiment capability of the device.