TOWARDS A SELF-CONSISTENT LSP MODEL OF AN ELECTRON BEAM DIODE

摘要：

The Large Scale Plasma (LSP) simulation tool was used to investigate two different methods of modelling electron beam impact induced anode plasmas in a diode load connected to a high voltage pulsed power machine. This involved emulating an experimental study performed by researchers at the Sandia National Laboratory. Both models were based on prior knowledge of the diode current and so are not fully predictive. Self-consistency, however, was evaluated by comparing results from numerical probes simulating Faraday cups, proton count monitors and a thermocouple array against experimental data.Each model assumed that protons were the predominant ion species affecting diode impedance. Of the two modelling methods that were evaluated, a temperature activated space-charge limited proton emission model proved to be the best performer. Results from a small parameter study showed that an anode surface temperature rise of 600 ℃ had the best agreement with experiment.

作者: Damon Swatton

作者单位: AWE,Aldermaston,Reading,RG7 4PR,UK

会议类型: 国际会议

会议名称: 17th International Conference on High-Power Particle Beams(第17届高功率离子束国际会议)

会议地点: 西安

会议语种:英文

页码: 369-372

在线出版日期: 2008-07-06（万方平台首次上网日期，不代表论文的发表时间）