Optimizing the Electrode Configuration of a Cylindrical Discharge-Type Fusion Device by Computational and Experimental Analysis
Optimizing the Electrode Configuration of a Cylindrical Discharge-Type Fusion Device by Computational and Experimental Analysis
复制标题
通过计算和实验分析优化圆柱形放电型聚变装置的电极配置
DOI：
10.1585/pfr.9.1306142
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发表时间：
2014
影响因子：
0.8
通讯作者：
S. Konishi
中科院分区：
文献类型：
--
作者：
K. Noborio;Y. Yamamoto;S. Konishi
提出了一种新的圆柱形放电型聚变装置的设计，以实现元件的精确对准和防止异常放电。使用圆柱形绝缘体作为真空边界的一部分，并固定阴极和阳极之间的相对位置。优化了电极的结构，使其在低压和高放电电压下保持稳定放电，从而提高了中子产额。通过开发2D代码分析电场和离子运动来进行优化，并通过实验验证了结果。结果表明，阳极接地有利于低压稳定放电。阳极高度和阴极悬伸的最佳组合分别为3cm和1cm或2cm。实验测量了优化结构的放电特性和中子产率。在30 kV、30 mA连续放电条件下，获得的最高放电电压（瞬时）为1.50 kV，中子产率为3 × 104 n/s。
A new design of a cylindrical discharge-type fusion device is proposed to achieve the precise alignment of components and prevent abnormal discharges. Cylindrical insulators that act as parts of the vacuum boundary and fix the relative position between cathode and anodes were used. The configuration of the electrodes was optimized to maintain stable discharge at low pressures and high discharge voltages, which enhances the neutron yield. The optimization was performed via analysis of the electric field and ion movements by developing a 2D code, and the results were experimentally verified. The results show that grounding the anodes is better for stable discharge at lower pressures. The optimized combination of the anode height and cathode overhang is 3 cm and 1 cm, or 2 cm, respectively. The discharge characteristics and neutron production rate were then experimentally measured for the optimized configuration. The attained highest discharge voltage (instantaneous) was ∼50 kV and the neutron production rate of 3 × 104 n/s was obtained by continuous discharge with an applied voltage of 30 kV and discharge current of 30 mA.