Tapering enhanced stimulated superradiant oscillator
Tapering enhanced stimulated superradiant oscillator
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DOI：
10.1103/physrevaccelbeams.21.080705
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发表时间：
2017-04
影响因子：
1.7
通讯作者：
J. Duris;P. Musumeci;N. Sudar;A. Murokh;A. Gover
中科院分区：
文献类型：
--
作者：
J. Duris;P. Musumeci;N. Sudar;A. Murokh;A. Gover
本文提出了一种基于锥形增强受激超辐射放大（TESSA）方案的新型高功率高效率自由电子激光振荡器。TESSA方案的主要特点是高强度的种子脉冲，提供了高梯度的光束减速和高效的能量提取。在振荡器配置中，TESSA波动器由高重复率电子束驱动并嵌入光学腔中。分束器用于分离放大功率的一部分，并将其余部分作为下一个电子束脉冲的强种子进行再循环。振荡腔内的反射镜使种子在波动器入口重新聚焦，使辐射单色化。在本文中，我们讨论了一个技术相关的例子，在1 $\mu$m下，使用1~MHz重复率的电子直线加速器，从外部注入点火器脉冲开始，系统的优化。
In this paper, we present a new kind of high power and high efficiency free-electron laser oscillator based on the application of the tapering enhanced stimulated superradiant amplification (TESSA) scheme. The main characteristic of the TESSA scheme is a high intensity seed pulse which provides high gradient beam deceleration and efficient energy extraction. In the oscillator configuration, the TESSA undulator is driven by a high repetition rate electron beam and embedded in an optical cavity. A beam-splitter is used for outcoupling a fraction of the amplified power and recirculate the remainder as the intense seed for the next electron beam pulse. The mirrors in the oscillator cavity refocus the seed at the undulator entrance and monochromatize the radiation. In this paper we discuss the optimization of the system for a technologically relevant example at 1 $\mu$m using a 1~MHz repetition rate electron linac starting with an externally injected igniter pulse.