台式、基于laser的VUV和X射线自由电子激光的设计考虑
Design considerations for table-top, laser-based VUV and X-ray free electron lasers
摘要：
基于超短高强度激光器的激光等离子体加速器最近取得了突破，证明了准单能GeV电子的产生。随着未来的拍瓦激光器的超高束流~100 kA在~10 fs可以预期，允许在自由电子激光器（FEL）的波荡器长度急剧减少。我们提出了一个台式自由电子激光设计的关键方面，包括能量损失和啁啾引起的空间电荷和尾场的讨论。这些效应对于优化桌面自由电子激光操作变得重要。第一个证明的原则真空紫外情况下，以及桌面X射线-自由电子激光，这可能会打开一个辉煌的光源，也为新的方式在临床诊断。
英文摘要：
A recent breakthrough in laser-plasma accelerators, based upon ultrashort high-intensity lasers, demonstrated the generation of quasi-monoenergetic GeV-electrons. With future Petawatt lasers ultra-high beam currents of ~100 kA in ~10 fs can be expected, allowing for drastic reduction in the undulator length of free-electron-lasers (FELs). We present a discussion of the key aspects of a table-top FEL design, including energy loss and chirps induced by space-charge and wakefields. These effects become important for an optimized table-top FEL operation. A first proof-of-principle VUV case is considered as well as a table-top X-ray-FEL which may open a brilliant light source also for new ways in clinical diagnostics.
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