用于高梯度电子加速的平板对称介电微米级结构

P. Schoessow, J. Rosenzweig
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引用次数: 1

摘要

提出了一类在红外激光脉冲激发下具有高加速梯度的平面微结构。这些结构由真空间隙分隔的平行介质板组成;介质或外表面涂层沿光束方向在激光波长处进行空间调制,以支持驻波加速场。建立了结构中加速模态场的数值和解析模型。我们给出了一种优化的耦合方案,使该模式能以较大的质量因子共振激发。介绍了这些平面结构的制作和测量计划实验的现状。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Slab symmetric dielectric micron scale structures for high gradient electron acceleration
A class of planar microstructures is proposed which provide high accelerating gradients when excited by an infrared laser pulse. These structures consist of parallel dielectric slabs separated by a vacuum gap; the dielectric or the outer surface coating are spatially modulated at the laser wavelength along the beam direction so as to support a standing wave accelerating field. We have developed numerical and analytic models of the accelerating mode fields in the structure. We show an optimized coupling scheme such that this mode is excited resonantly with a large quality factor. The status of planned experiments on fabricating and measuring these planar structures is described.
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