Reconstructing nonlinear plasma wakefields using a generalized temporally encoded spectral shifting analysis
Reconstructing nonlinear plasma wakefields using a generalized temporally encoded spectral shifting analysis
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DOI：
10.1103/physrevaccelbeams.21.103501
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发表时间：
2018-10
影响因子：
1.7
通讯作者：
C. Arran;N. Matlis;R. Walczak;S. Hooker
中科院分区：
文献类型：
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作者：
C. Arran;N. Matlis;R. Walczak;S. Hooker
我们推广的时间编码谱移（TESS）分析测量等离子体尾场光谱干涉术不同的探测脉冲的任意光谱轮廓和测量非线性尾场。我们表明，高斯近似使用到现在为止的结果在一个很大的错误计算的韦克菲尔德振幅，由一个因素高达2。提出了一种精确测量高振幅准线性和非线性尾场的方法，使用扩展的TESS程序，我们把它的精度在这些制度的一些限制。这些扩展和改进的分析表明其潜力的快速和准确的等离子体尾场的拍摄诊断，即使在低等离子体密度。
We generalize the temporally encoded spectral shifting (TESS) analysis for measuring plasma wakefields using spectral interferometry to dissimilar probe pulses of arbitrary spectral profile and to measuring nonlinear wakefields. We demonstrate that the Gaussian approximation used up until now results in a substantial miscalculation of the wakefield amplitude, by a factor of up to two. A method to accurately measure higher amplitude quasilinear and nonlinear wakefields is suggested, using an extension to the TESS procedure, and we place some limits on its accuracy in these regimes. These extensions and improvements to the analysis demonstrate its potential for rapid and accurate on-shot diagnosis of plasma wakefields, even at low plasma densities.