4th Generation High-Brightness Electron Beam Shaping and Light Source Applications

第四代高亮度电子束整形及光源应用

• 批准号: 232769134
• 负责人: Professor Dr. Bernhard Hidding
• 金额: --
• 依托单位: Institut für Laser- und Plasmaphysik
• 依托单位国家: 德国
• 项目类别: Independent Junior Research Groups
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2016-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/232769134?language=en
• 关键词: 4th; Generation; Brightness; Electron; Beam

A novel plasma based concept for generation of electron beams of highest quality which has recently been conceived, patented and published by the applicant and his collaborators shall be experimentally demonstrated and optimized. At first, plasma sources based on lowest-ionization-threshold alkali metal vapors such as lithium, Rubidium and cesium shall be developed. Compact electron beams shall then self-ionize these vapors by virtue of their electric self-fields, and shall then drive an intense plasma wave. These plasma waves are excellently suited to accelerate electrons, since the collective electric fields of such plasma waves can be four orders of magnitude larger as compared to conventional accelerators. A synchronized, ultrashort laser pulse with a peak intensity about four orders of magnitude lower than in state-of-the-art laser-plasma-accelerators shall then ionize a second gaseous component in its focus, thus releasing electrons directly inside the plasma wave with minimal transversal momentum. This gas component shall have a higher ionization threshold than the medium constituting the plasma wave, for example helium. The laser-released helium electrons are now focused, trapped and rapidly accelerated in the plasma wave. Since the focus intensity of the release laser is minimized, the released electrons in this underdense photocathode plasma wakefield acceleration scheme are ultracold and form bunches of minimized emittance. The emittance, in turn, is crucial for electron beam based light sources based on free-electron-lasers, Compton backscattering or betatron oscillations in the plasma. Proof-of-concept experiments shall be developed at University of Hamburg and shall be carried through at laser-plasma-accelerator facilities in Germany, as well as at the Stanford Linear Accelerator (SLAC). Furthermore, preionization of the low-ionization-threshold component via laser pulses and discharges and translation of the release laser pulse in space and time with respect to the plasma wave shall be studied in order to optimize the acceleration distance and energy gain, as well as the stability and tunability of the scheme. Ultimately, the scheme shall pave the way to the controlled generation of electron beams of unprecedented quality, and the development of compact, cost-effective and superior light sources for medicine and fundamental research.

一个新的等离子体为基础的概念，用于产生最高质量的电子束，这是最近构思，专利和出版的申请人和他的合作者应实验证明和优化。首先，应开发基于最低电离阈值碱金属蒸气（如锂、铷和铯）的等离子体源。紧凑的电子束将凭借其自身的电场使这些蒸汽自膨胀，并将驱动一个强烈的等离子体波。这些等离子体波非常适合于加速电子，因为与传统加速器相比，这种等离子体波的集体电场可以大四个数量级。一个同步的超短激光脉冲，其峰值强度比最先进的激光等离子体加速器低四个数量级，然后将第二种气体成分聚集在其焦点上，从而以最小的横向动量直接在等离子体波内释放电子。该气体成分应具有比构成等离子体波的介质（例如氦）更高的电离阈值。激光释放的氦电子现在被聚焦，捕获并在等离子体波中迅速加速。由于释放激光的聚焦强度被最小化，在这种欠密光阴极等离子体韦克菲尔德加速方案中释放的电子是超冷的，并形成发射度最小的聚束。发射度反过来对于基于自由电子激光器、康普顿背散射或等离子体中的电子感应加速器振荡的基于电子束的光源至关重要。概念验证实验将在汉堡大学进行，并将在德国的激光等离子体加速器设施以及斯坦福大学直线加速器（SLAC）进行。此外，应研究通过激光脉冲和放电的低电离阈值成分的预电离以及释放激光脉冲相对于等离子体波在空间和时间上的平移，以优化加速距离和能量增益，以及该方案的稳定性和可调谐性。最终，该方案将为控制产生前所未有的质量的电子束铺平道路，并为医学和基础研究开发紧凑，具有成本效益和上级光源。

项目成果

Optical plasma torch electron bunch generation in plasma wakefield accelerators

• DOI: 10.1103/physrevstab.18.081304
• 发表时间: 2015-08
• 期刊: Physical Review Special Topics-accelerators and Beams
• 作者: G. Wittig;O. Karger;A. Knetsch;Y. Xi;A. Deng;J. Rosenzweig;D. Bruhwiler;J. Smith;G. Manahan;Z. Sheng;D. Jaroszynski;B. Hidding

Ultrahigh brightness bunches from hybrid plasma accelerators as drivers of 5th generation light sources

• DOI: 10.1088/0953-4075/47/23/234010
• 发表时间: 2014-12-14
• 期刊: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
• 影响因子: 1.6
• 作者: Hidding, B.;Manahan, G. G.;Smith, J.
• 通讯作者: Smith, J.

High quality electron beam acceleration by ionization injection in laser wakefields with mid-infrared dual-color lasers

使用中红外双色激光器在激光尾场中通过电离注入实现高质量电子束加速

• DOI: 10.1063/1.4953895
• 发表时间: 2016-03
• 期刊: Physics of Plasmas
• 影响因子: 2.2
• 作者: Zeng Ming;Luo Ji;Chen Min;Mori Warren B.;Sheng Zheng-Ming;Hidding Bernhard
• 通讯作者: Hidding Bernhard

Hybrid modeling of relativistic underdense plasma photocathode injectors

• DOI: 10.1103/physrevstab.16.031303
• 发表时间: 2013-03
• 期刊: Physical Review Special Topics-accelerators and Beams
• 作者: Y. Xi;B. Hidding;D. Bruhwiler;G. Pretzler;J. Rosenzweig

Electron beam manipulation, injection and acceleration in plasma wakefield accelerators by optically generated plasma density spikes

• DOI: 10.1016/j.nima.2016.02.027
• 发表时间: 2016-09
• 期刊: Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
• 影响因子: 1.4
• 作者: G. Wittig;O. Karger;A. Knetsch;Y. Xi;A. Deng;J. Rosenzweig;D. Bruhwiler;Jonathan M. Smith;Z. Sheng;D. Jaroszynski;G. Manahan;B. Hidding