论文标题
相对论电子束的高梯度Terahertz驱动的加速度
Cascaded high-gradient terahertz-driven acceleration of relativistic electron beams
论文作者
论文摘要
Terahertz（THZ）驱动的加速度最近已成为有效，可靠且在紧凑的设置中提供超短亮电子束的新途径。许多与THZ驱动的加速度相关的工作方案和关键技术已成功证明，并不断改进到新的限制。但是，所达到的加速梯度和能量增益仍然很低，并且在高场和高能源方面的潜在物理和技术挑战仍未探索。在这里，我们在单阶段配置中报告了创纪录的能量增益为170 KEV，并在两个阶段设置中演示了相对论梁的第一个级联相对论梁的加速度。全束加速度的平均加速梯度为85 mV/m，峰值THZ电场为1.1 GV/m。本原则结果是THZ驱动的加速度的至关重要的进步，对未来的电子源和相关的科学发现产生了重大影响。
Terahertz (THz)-driven acceleration has recently emerged as a new route for delivering ultrashort bright electron beams efficiently, reliably, and in a compact setup. Many THz-driven acceleration related working schemes and key technologies have been successfully demonstrated and are continuously being improved to new limits. However, the achieved acceleration gradient and energy gain remain low, and the potential physics and technical challenges in the high field and high energy regime are still under-explored. Here we report a record energy gain of 170 keV in a single-stage configuration, and demonstrate the first cascaded acceleration of a relativistic beam with a 204 keV energy gain in a two-stages setup. Whole-bunch acceleration is accomplished with an average accelerating gradient of 85 MV/m and a peak THz electric field of 1.1 GV/m. This proof-of-principle result is a crucial advance in THz-driven acceleration with a major impact on future electron sources and related scientific discoveries.
