Optimization of the hairpin-source electron gun using EGUN

详细信息    查看全文

• 作者：Munawar Iqbal ; Ghalib ul Islam ; Safa Saleem ; W.B. Herrmannsfeldt
• 关键词：Emission density ; Power density ; Beam convergence ; EGUN
• 刊名：Vacuum
• 出版年：March, 2014
• 年：2014
• 卷：101
• 期：Complete
• 页码：157-162
• 全文大小：1258 K

文摘

We present a comparison of the experimental and simulated results of the thermionic hairpin-source, electron beam assembly using the SLAC electron beam trajectory program (EGUN). The gun was optimized for maximum emission current density and beam convergence in the post anode region. Therefore, by optimizing different parameters, an emission current density of 32聽A/cm² with maximum beam convergence of 0.9聽mm was obtained. This corresponds to a power density of 3.29聽脳聽10⁵聽W/cm² at the focus point. As this was accomplished without the aid of magnetic focusing, the assembly was much simplified. The gun can now be used for electron devices and accelerator technology which require high current and power densities.