电磁轨道发射器的模型化研究方法

为了更高效地对电磁轨道发射进行大量的实验研究,分析改进了使用中小口径发射器作为研究对象的模型化研究方法。考虑到材料属性等实验条件的可行性,对电磁轨道发射器进行模型化,分析其电磁场、温度场等物理场以及速度、带载能力等性能指标,提出较为可行的模型化研究方案,并利用Ansoft Maxwell等软件对瞬态情况下的发射器三维模型进行仿真验证。理论推导和仿真结果表明: 电磁轨道发射器的模型化研究方法有很多种,在大口径原型发射器中采用电导率相对较低的材料,即可实现与现有的、采用电导率较高材料的中小口径发射器的物理场匹配,且保证速度和单位体积带载能力相同。

Abstract

In this paper, DPHC’s function in PTS facility was preliminarily explored using NEPTUNE3D code. A series of cold-chamber tests were calculated and analyzed, in which only the electron emission on cathode surface was considered without energy deposition and temperature rise. In order to calculate the acceleration, a simplified 3D geometry model was developed and used as an initial parameter. The full-circuit way about PTS facility was simulated in order to acquire voltage curves from vacuum insulator B under different loads, which were used as input driving signals in following PIC simulations. With the help of visualization tools, the distribution of the magnetic field and the clearer positions of magnetic nulls were both acquired and displayed in 2D and 3D schematics. Calculated results and data proved that DPHC behaved efficiently during current transforming and energy convergence. Preliminary research about the process of electron emission and transportation under high voltage curve were explored, and the current loss efficiencies were estimated to be around 0.46%~0.48% under different driving sources. The simulation results let us understand the DPHC functions in pulsed power systems better.

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林灵淑, 袁伟群, 赵莹, 王志增, 严萍. 电磁轨道发射器的模型化研究方法[J]. 强激光与粒子束, 2016, 28(1): 15007. Lin Lingshu, Yuan Weiqun, Zhao Ying, Wang Zhizeng, Yan Ping. Preliminary evaluation of current loss mechanism caused by electron emission at current convergence region on pulsed power facilities[J]. High Power Laser and Particle Beams, 2016, 28(1): 15007.

电磁轨道发射器的模型化研究方法

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