从相对论性电子束团的自组织到相干同步加速器光：用光子时间拉伸数字化仪观测
From self-organization in relativistic electron bunches to coherent synchrotron light: observation using a photonic time-stretch digitizer
摘要：
在最近和未来的同步辐射设施中，需要具有越来越高的电荷密度的相对论电子聚束来产生从X射线到太赫兹的各种波长的明亮光。在这样的条件下，电子束团与其自身发射的电磁场的相互作用导致不稳定性和复杂空间结构的自发形成。因此，理解这些不稳定性是大多数电子加速器的关键。然而，调查遭受缺乏非破坏性的记录工具的电子束团的形状。因此，在储存环中，大多数研究都集中在由此产生的辐射上。在这里，我们提出了测量的电场在附近的电子束在存储环，在许多圈。为了记录超快电场，我们设计了一个光子时间拉伸模数转换器，其采样速率为每秒万亿次。因此，我们可以观察到储存环中自发斑图形成和相干同步辐射巨爆发之间的预测联系。
英文摘要：
In recent and future synchrotron radiation facilities, relativistic electron bunches with increasingly high charge density are needed for producing brilliant light at various wavelengths, from X-rays to terahertz. In such conditions, interaction of electrons bunches with their own emitted electromagnetic fields leads to instabilities and spontaneous formation of complex spatial structures. Understanding these instabilities is therefore key in most electron accelerators. However, investigations suffer from the lack of non-destructive recording tools for electron bunch shapes. In storage rings, most studies thus focus on the resulting emitted radiation. Here, we present measurements of the electric field in the immediate vicinity of the electron bunch in a storage ring, over many turns. For recording the ultrafast electric field, we designed a photonic time-stretch analog-to-digital converter with terasamples/second acquisition rate. We could thus observe the predicted link between spontaneous pattern formation and giant bursts of coherent synchrotron radiation in a storage ring.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
