A theoretical and experimental investigation of anisotropic-dielectric-loaded linear electron accelerators
A theoretical and experimental investigation of anisotropic-dielectric-loaded linear electron accelerators
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各向异性电介质负载线性电子加速器的理论与实验研究
DOI：
10.1049/pi-b-1.1957.0152
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发表时间：
1957
期刊：
影响因子：
--
通讯作者：
B. Loach
中科院分区：
文献类型：
--
作者：
R. B. R.;L. B. Mullett;W. Walkinshaw;J. Bell;B. Loach
从理论上研究了陶瓷介质间隔圆盘加载的直线加速器光波导的一般特性，结果表明这种光波导比全金属光波导具有更高的并联阻抗。接着介绍了波导设计的理论方法和实验方法，并结合实际设计了一台实验用的直线电子加速器。早期使用加速器的经验显示出相当大的过量衰减，这可能与形成的碳质沉积物的高二次发射系数有关；这一点后来通过使用汞而不是油扩散泵来消除。只要采取适当的预防措施，如使用汞泵，就可以得出结论，进一步开发具有相当大潜在优势的介质加载加速器的道路是敞开的。
The general properties of linear accelerator waveguides loaded with spaced discs of ceramic dielectric are investigated theoretically and these waveguides are shown to have a higher shunt impedance than all-metal waveguides. Theoretical and experimental methods of waveguide design follow, a combination of which is used to design an experimental linear electron accelerator. Early experience with the accelerator shows considerable excess attenuation, which is probably associated with a high secondary-emission coefficient of the carbonaceous deposits formed; this is later eliminated by using mercury instead of oil-diffusion pumps. Provided that suitable precautions, such as the use of a mercury pump, are taken it is concluded that the way lies open for further development of dielectric-loaded accelerators, with considerable potential advantages.