Many of the most significant advances in accelerator science have been due to improvements in our ability to manipulate beam phase space. Despite steady progress in beam phase-space manipulation over the last several decades, future accelerator applications continue to outpace the ability to manipulate the phase space. This situation is especially pronounced for longitudinal beam phase-space manipulation, and is now getting increased attention. Herein, we report the first experimental demonstration of the double emittance exchange concept, which allows for the control of the longitudinal phase space using relatively simple transverse manipulation techniques. The double emittance exchange beamline enables extensive longitudinal manipulation, including tunable bunch compression, time-energy correlation control, and nonlinearity correction, in a remarkably flexible manner. The demonstration of this new method opens the door for arbitrary longitudinal beam manipulations capable of responding to the ever increasing demands of future accelerator applications.

中文翻译：

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双发射交换对任意纵向光束相空间操纵的实验证明

加速器科学中许多最重要的进步都归功于我们操纵光束相空间的能力的提高。尽管在过去几十年中光束相空间操纵取得了稳步进展，但未来的加速器应用继续超过操纵相空间的能力。这种情况在纵梁相空间操纵中尤为明显，现在受到越来越多的关注。在此，我们报告了双发射度交换概念的第一个实验演示，它允许使用相对简单的横向操作技术来控制纵向相空间。双发射率交换光束线可实现广泛的纵向操纵，包括可调束团压缩、时间-能量相关控制和非线性校正，以一种非常灵活的方式。这种新方法的演示为任意纵梁操纵打开了大门，能够响应未来加速器应用不断增长的需求。