arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.03729physics.acc-ph
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由等离子体和结构中的尾场响应重建纵向电流分布

Longitudinal current profile reconstruction from wakefield response in plasmas and structures

Ryan Roussel, Gerard Andonian, James Rosenzweig, Stanislav Baturin

摘要:

当前和下一代加速器,特别是用于驱动基于尾流场的方案的应用,需要纵向束成形和伴随的纵向表征以进行实验优化。在这里,我们提出了一种诊断方法,重建的纵向光束轮廓的位置处的尾流场产生源。所提出的方法推导出的带电粒子束的纵向轮廓的时间分辨的质心能量的变化,由于尾场效应的测量。重建技术是基于一个反卷积算法,这是完全概括到任何解析或数值计算的尾场激励机制的格林函数。这种方法被证明是在纵向电流分布重建产生精确的功能。我们证明了这种技术的准确性和有效性,使用模拟和实验的例子,在等离子体和介电结构,并比较实验测量的纵向光束参数。的分辨率和适用性的限制,相关的情况下也进行了检查。

英文摘要:

Present-day and next-generation accelerators, particularly for applications in driving wakefield-based schemes, require longitudinal beam shaping and attendant longitudinal characterization for experimental optimization. Here we present a diagnostic method which reconstructs the longitudinal beam profile at the location of a wakefield-generating source. The methods presented derive the longitudinal profile of a charged particle beam solely from measurement of the time-resolved centroid energy change due to wakefield effects. The reconstruction technique is based on a deconvolution algorithm that is fully generalizable to any analytically or numerically calculable Green's function for the wakefield excitation mechanism. This method is shown to yield precise features in the longitudinal current distribution reconstruction. We demonstrate the accuracy and efficacy of this technique using simulations and experimental examples, in both plasmas and dielectric structures, and compare to the experimentally measured longitudinal beam parameters as available. The limits of resolution and applicability to relevant scenarios are also examined.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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