Multi-GeV wakefield acceleration in a plasma-modulated plasma accelerator
Multi-GeV wakefield acceleration in a plasma-modulated plasma accelerator
复制标题
等离子体调制等离子体加速器中的多 GeV 尾场加速
DOI：
10.1103/physreve.109.025206
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发表时间：
2024
影响因子：
2.4
通讯作者：
Van De Wetering J
中科院分区：
文献类型：
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作者：
Van De Wetering J
我们研究了等离子体调制等离子体加速器（P-MoPA）的加速器级[Jakobsson，Phys. Rev. Lett. 127，184801（2021）0031-900710.1103/PhysRevLett.127.184801]使用傍轴波动方程和粒子单元（PIC）模拟。我们表明，调整的激光和等离子体参数的调制器阶段的P-MoPA允许的脉冲序列内的脉冲的时间分布进行控制，这反过来又允许在加速器阶段的尾振幅尽可能aslarger比所产生的等离子体拍频波加速器具有相同的总驱动激光能量。我们的分析表明，Rosenbluth-Liu失谐是不重要的P-MoPA中，如果在火车中的脉冲数小于，这种失谐也部分抵消增加红移，从而增加脉冲间距，朝着后面的火车。的驱动脉冲串的横模振荡的分析被发现是在良好的协议与2D（笛卡尔）PIC模拟。PIC模拟显示的能量增益的驱动脉冲能量。我们的研究结果表明，由几焦耳、皮秒脉冲（例如高重复率薄盘激光器提供的脉冲）驱动的P-MoPA可以以千赫范围内的脉冲重复率将电子聚束加速到多GeV能量。
We investigate the accelerator stage of a plasma-modulated plasma accelerator (P-MoPA) [Jakobsson , Phys. Rev. Lett. 127, 184801 (2021)0031-900710.1103/PhysRevLett.127.184801] using both the paraxial wave equation and particle-in-cell (PIC) simulations. We show that adjusting the laser and plasma parameters of the modulator stage of a P-MoPA allows the temporal profile of pulses within the pulse train to be controlled, which in turn allows the wake amplitude in the accelerator stage to be as much aslarger than that generated by a plasma beat-wave accelerator with the same total drive laser energy. Our analysis shows that Rosenbluth-Liu detuning is unimportant in a P-MoPA if the number of pulses in the train is less than, and that this detuning is also partially counteracted by increased red-shifting, and hence increased pulse spacing, towards the back of the train. An analysis of transverse mode oscillations of the driving pulse train is found to be in good agreement with 2D (Cartesian) PIC simulations. PIC simulations demonstrating energy gains offor drive pulse energies ofare presented. Our results suggest that P-MoPAs driven by few-joule, picosecond pulses, such as those provided by high-repetition-rate thin-disk lasers, could accelerate electron bunches to multi-GeV energies at pulse repetition rates in the kilohertz range.