Scholarlink

<p>Laser wakefield acceleration (LWFA) holds great potential in the exploration of the next-generation accelerators and future colliders, in which the injection mechanism plays a crucial role as it directly affects the characteristics of electron acceleration. Ionization injection is a continuous injection mechanism that enables producing high-charge electron beams via LWFA, at the cost of broad spectrum of the accelerated electrons. Recently, an improvement to the ionization injection mechanism has been theoretically proposed. The so-called scissor-cross ionization injection enables short injection lengths and quasi-simultaneous injection of the electrons. In this work, we experimentally demonstrate such injection mechanism, which uses an additional intense laser pulse intersecting the wakefield accelerator at an acute angle to trigger the scissor-cross ionization injection. When the time delay between the laser pulses is finely varied within the pulse duration, the method enables precise tuning of the injection process, of the charge and of the energy spread of the electron beam. Our successful demonstration of the scissor-cross ionization injection leads to a high-charge 224 MeV electron beam with energy spread below 5%.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Demonstration of scissor-cross ionization injection in laser wakefield accelerators

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年12月11日

查看全文
  • Siyu Chen,
  • Guangwei Lu,
  • Xichen Hu,
  • Mingyang Zhu,
  • Minghao Ma,
  • Ming Zeng,
  • Hao Xu,
  • Jia Wang,
  • Mingxuan Wei,
  • Jiao Jia,
  • Zhida Yang,
  • Hanmi Mou,
  • Zhuofan Zhang,
  • Runze Li,
  • Feng liu,
  • Boyuan Li,
  • Min chen,
  • Dazhang Li,
  • Wenchao Yan

摘要

Laser wakefield acceleration (LWFA) holds great potential in the exploration of the next-generation accelerators and future colliders, in which the injection mechanism plays a crucial role as it directly affects the characteristics of electron acceleration. Ionization injection is a continuous injection mechanism that enables producing high-charge electron beams via LWFA, at the cost of broad spectrum of the accelerated electrons. Recently, an improvement to the ionization injection mechanism has been theoretically proposed. The so-called scissor-cross ionization injection enables short injection lengths and quasi-simultaneous injection of the electrons. In this work, we experimentally demonstrate such injection mechanism, which uses an additional intense laser pulse intersecting the wakefield accelerator at an acute angle to trigger the scissor-cross ionization injection. When the time delay between the laser pulses is finely varied within the pulse duration, the method enables precise tuning of the injection process, of the charge and of the energy spread of the electron beam. Our successful demonstration of the scissor-cross ionization injection leads to a high-charge 224 MeV electron beam with energy spread below 5%.