Brilliant X-rays using a Two-Stage Plasma Insertion Device.
Brilliant X-rays using a Two-Stage Plasma Insertion Device.
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DOI：
10.1038/s41598-017-04124-7
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发表时间：
2017-06-21
影响因子：
4.6
通讯作者：
Wing M
中科院分区：
文献类型：
--
作者：
Holloway JA;Norreys PA;Thomas AGR;Bartolini R;Bingham R;Nydell J;Trines RMGM;Walker R;Wing M
粒子加速器对自然科学的所有领域产生了巨大影响，从基本粒子物理学到蛋白质成像和新药物的开发。现代光源通过提供异常明亮的短 X 射线脉冲，推动了许多领域的发展。在这里，我们提出了一项新颖的数值研究，证明现有的第三代光源可以通过在等离子体尾场内波动其光束来显着增强其 X 射线脉冲的亮度和光子能量。这项研究表明，通过将 3 GeV 电子束穿过两级等离子体插入装置，可以使 X 射线亮度增加三个数量级，并使 X 射线光子能量增加一个数量级以上。生产机制将电子束微聚束，并确保脉冲在产生时径向偏振。我们还证明，微束电子束本身就是一种有效的尾场驱动器，可以将见证电子束加速至 6GeV。
Particle accelerators have made an enormous impact in all fields of natural sciences, from elementary particle physics, to the imaging of proteins and the development of new pharmaceuticals. Modern light sources have advanced many fields by providing extraordinarily bright, short X-ray pulses. Here we present a novel numerical study, demonstrating that existing third generation light sources can significantly enhance the brightness and photon energy of their X-ray pulses by undulating their beams within plasma wakefields. This study shows that a three order of magnitude increase in X-ray brightness and over an order of magnitude increase in X-ray photon energy is achieved by passing a 3 GeV electron beam through a two-stage plasma insertion device. The production mechanism micro-bunches the electron beam and ensures the pulses are radially polarised on creation. We also demonstrate that the micro-bunched electron beam is itself an effective wakefield driver that can potentially accelerate a witness electron beam up to 6 GeV.