Internal magnetic field measurements of translated and merged field-reversed configuration plasmas in the FAT-CM device.
Internal magnetic field measurements of translated and merged field-reversed configuration plasmas in the FAT-CM device.
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FAT-CM 设备中平移和合并的场反转配置等离子体的内部磁场测量。
DOI：
10.1063/1.5036997
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
T. Tajima
中科院分区：
文献类型：
--
作者：
H. Gota;J. Ishiwata;F. Tanaka;A. Hosozawa;T. Asai;Ts. Takahashi;J. Sekiguchi;T. Roche;T. Matsumoto;S. Dettrick;Y. Mok;M. Binderbauer;T. Tajima
场反转组态（FRC）平移-碰撞合并放大（FAT-CM）实验是近年来开展的一项研究FRC等离子体碰撞和合并的物理现象的实验。两个独立形成的FRC被平移到FAT-CM设备的限制区域，在设备中平面附近以高达10400 km/s的相对速度碰撞，并实现最终合并的FRC等离子体状态。为了测量平移和合并的FRC等离子体的内部磁场分布以及了解其碰撞合并过程，由TAE Technologies开发的内部磁性探针阵列已安装在FAT-CM设备的中平面上。初始磁场测量结果表明，无论是平移和合并FRC等离子体状态表现出明确的场反转结构，这是定性与2D MHD模拟吻合得很好。结果表明，碰撞FRC完全合并为单个FRC等离子体状态需要在约束区有足够的镜场。
Field-reversed configuration (FRC) Amplification via Translation-Collisional Merging (FAT-CM) experiments have recently commenced to study physics phenomena of colliding and merged FRC plasma states. Two independently formed FRCs are translated into the confinement region of the FAT-CM device, collided near the mid-plane of the device with a relative speed of up to ∼400 km/s, and a final merged FRC plasma state is achieved. To measure internal magnetic field profiles of the translated and merged FRC plasmas as well as to understand its collisional-merging process, an internal magnetic probe array, developed by TAE Technologies, has been installed in the mid-plane of the FAT-CM device. Initial magnetic field measurements indicate that both the translated and the merged FRC plasma states exhibit a clear field-reversed structure, which is qualitatively in good agreement with 2D MHD simulation. It is found and verified that a sufficient mirror field in the confinement region is required for colliding FRCs to be fully merged into a single FRC plasma state.