All-optical source size and emittance measurements of laser-accelerated electron beams

IF 1.5 3区 物理与天体物理 Q3 PHYSICS, NUCLEAR
F. C. Salgado, A. Kozan, D. Seipt, D. Hollatz, P. Hilz, M. Kaluza, A. Sävert, A. Seidel, D. Ullmann, Y. Zhao, M. Zepf
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引用次数: 0

Abstract

Novel schemes for generating ultralow emittance electron beams have been developed in past years and promise compact particle sources with excellent beam quality suitable for future high-energy physics experiments and free-electron lasers. Recent theoretical work has proposed a laser-based method capable of resolving emittances in the sub 0.1 mm mrad regime by modulating the electron phase space ponderomotively. Here we present the first experimental demonstration of this scheme using a laser wakefield accelerator. The observed emittance and source size are consistent with published values. We also show calculations demonstrating that tight bounds on the upper limit for emittance and source size can be derived from the “laser-grating” method even in the presence of low signal to noise and uncertainty in laser-grating parameters.

Abstract Image

激光加速电子束的全光源尺寸和发射率测量
在过去几年中,已经开发出了用于产生超低发射率电子束的新方案,这些方案有望成为适合未来高能物理实验和自由电子激光器的具有优异光束质量的紧凑型粒子源。最近的理论工作提出了一种基于激光的方法,能够通过调制电子相空间的思索动量来分辨低于 0.1 mm mrad 的发射率。在这里,我们首次利用激光汪场加速器对这一方案进行了实验演示。观测到的发射率和光源大小与已公布的数值一致。我们还展示了计算结果,证明即使在低信噪比和激光光栅参数不确定的情况下,也可以通过 "激光光栅 "方法得出发射率和光源尺寸的严格上限。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Physical Review Accelerators and Beams
Physical Review Accelerators and Beams Physics and Astronomy-Surfaces and Interfaces
CiteScore
3.90
自引率
23.50%
发文量
158
审稿时长
23 weeks
期刊介绍: Physical Review Special Topics - Accelerators and Beams (PRST-AB) is a peer-reviewed, purely electronic journal, distributed without charge to readers and funded by sponsors from national and international laboratories and other partners. The articles are published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. It covers the full range of accelerator science and technology; subsystem and component technologies; beam dynamics; accelerator applications; and design, operation, and improvement of accelerators used in science and industry. This includes accelerators for high-energy and nuclear physics, synchrotron-radiation production, spallation neutron sources, medical therapy, and intense-beam applications.
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