在无暗电流,10-GeV级,通道引导激光等离子加速器中匹配引导和控制注入
A Picksley1, J Stackhouse1,2, C Benedetti1
1<a href="https://ror.org/02jbv0t02">Lawrence Berkeley National Laboratory</a>, Berkeley, California 94720, USA.
Physical review letters
|January 3, 2025
概括
研究人员展示了30厘米以上的等离子加速器中强大的激光脉冲的高质量引导. 他们实现了GeV电子束,显示了提高激光-等离子加速效率的潜力.
科学领域:
- 等离子体物理学的物理学
- 高强度激光科学 高强度激光科学
- 粒子加速 粒子加速
背景情况:
- 激光等离子加速器为紧粒子加速提供了一个有前途的途径.
- 高强度激光脉冲的高效指导对于优化能量转移到等离子体后台至关重要.
研究的目的:
- 为了研究高强度激光脉冲在米尺度,通道引导激光等离子加速器中的传播动力学.
- 量化瓦级激光器的激光到唤醒能量传输的局限性.
- 探索通过激光模式控制改善电子束参数的方法.
主要方法:
- 调整等离子体通道长度逐一拍摄以测量激光传播.
- 使用密度大约为1x10^17cm^-3.的等离子体.
- 使用模拟来分析激光模式控制效果.
主要成果:
- 实现了超过30厘米的500 TW激光脉冲的高质量引导.
- 观察到横向的能量传输和几乎匹配的传播动态.
- 产生的电子束具有高达9.2 GeV的近同能峰值,电荷超过10 GeV.
结论:
- 在道导向激光等离子加速器中证明了高效的激光引导和能量传输.
- 确定了当前佩塔瓦特级激光能传输效率的局限性.
- 展示了激光模式控制的潜力,以增强电子束参数.
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