Megagauss magnetic field generation in single-turn coils:: new frontiers for scientific experiments
Megagauss magnetic field generation in single-turn coils:: new frontiers for scientific experiments
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DOI：
10.1088/0022-3727/32/18/306
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发表时间：
1999-09-21
影响因子：
3.4
通讯作者：
von Ortenberg, M
中科院分区：
文献类型：
--
作者：
Portugall, O;Puhlmann, N;von Ortenberg, M
我们报告了洪堡高磁场中心的兆高斯发电机的设计和性能。该装置利用快速电容器放电成单匝线圈，产生适合低温实验的直径为8mm的260 T微秒脉冲和直径为5mm的310 T微秒脉冲。应用简单的概念来证实发电机和元件选择的关键设计原则。详细讨论了60kv大功率低电感电路的实现及其他技术问题。磁场和电流数据的分析是基于磁压力和非线性磁通扩散的数值模拟。这是为了研究柏林发电机的局限性和特点，特别是单匝线圈技术。本文主要关注磁场、发电机和线圈参数，这些参数可用于在低温下进行常规、可重复的科学实验。
We report on the design and performance of a megagauss generator at the Humboldt High Magnetic Field Centre. The installation uses the fast capacitor discharge into single-turn coils to produce microsecond pulses of 260 T in 8 mm diameter suitable for low-temperature experiments and 310 T in 5 mm diameter. Simple concepts are applied to substantiate crucial design principles for the generator and the choice of components. The implementation of a high-power/low-inductance circuit operated at 60 kV and other technical questions are discussed in detail. The analysis of experimental field and current data is based on numerical simulations of the magnetic pressure and the nonlinear flux diffusion. It was carried out in order to investigate the limitations and characteristics of the Berlin generator in particular and the single-turn coil technique in general. The paper focuses primarily on field, generator and coil parameters, which can be used for performing routine, reproducible scientific experiments at low temperatures.