ARI-MA ACTIVE INTERROGATION USING RADIATION GENERATED FROM INTENSE LASER PRODUCED ELECTRON BEAMS

ARI-MA 使用强激光产生的电子束产生的辐射进行主动询问

• 批准号: 0833499
• 负责人: Karl Krushelnick
• 金额: $ 36.7万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-15 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0833499&HistoricalAwards=false
• 关键词: ARI; MA; ACTIVE; INTERROGATION; USING

ARI-MA: Active Interrogation Using Radiation Generated from Intense Laser Produced Electron BeamsThe high cost and large size of conventional accelerator technology has stimulated a search for new methods of accelerating particles. The objective of this research is to develop compact and efficient radiation sources for active interrogation of objects in order to detect nuclear materials. The approach will be to use radiation sources generated by high power laser produced particle beams.The intellectual merit of the project stems from the novel approach to particle beam generation involving the use of the large electrostatic fields generated by intense laser pulses within plasmas, which can be several orders of magnitude higher than those found in conventional accelerators. These fields are ideal for accelerating electron bunches to high energies over very short distances. In the proposed work, the 300 Terawatt laser facility at the University of Michigan will be used to generate Giga-electronvolt-range energy electron beams which will then be used to generate a high flux of highly directional gamma rays to be used for simultaneous radiography and active interrogation (gamma ray activation) of material. The production of very energetic proton beams from underdense targets will also be investigated which may allow more efficient production of pions and muons.This proposed research may lead to broader impacts since such beams will be of benefit for a wide range of research which presently relies on accelerator technology including biology, materials science and medicine. Both graduate and undergraduate students will participate in this work and efforts will be made to increase public understanding of laser and beam technology as well as to promote diversity.

ARI-MA：使用由激光产生的电子束产生的辐射的主动询问高成本和大尺寸的常规加速器技术刺激了人们寻找加速粒子的新方法。 这项研究的目的是开发紧凑而有效的辐射源，以积极询问对象，以检测核材料。 该方法将是使用由高功率激光产生的粒子梁产生的辐射源。该项目的智力优点源于新颖的方法到粒子光束产生的粒子，涉及在等离子体中使用强激光脉冲产生的大静电场，这些静电场在等离子体中产生的大量静电场可能比在传统加速器中建立的那些高几个数量级。 这些场是将电子束在非常短的距离内加速到高能的理想选择。在拟议的工作中，密歇根大学的300 Terawatt激光设施将用于产生Giga-Electronvolt-Range Engement Electron Beams，然后将其用于产生高方向性伽玛射线的高通量，用于同时进行射线照相和材料激活（Gamma Ray活性）。还将研究从不足目标的质子束产生非常高能的质子束，这可能会允许更有效地产生亲质和muons。这项拟议的研究可能会导致更广泛的影响，因为此类梁对于目前依赖于包括生物学，材料科学和医学在内的加速器技术的广泛研究将有益于广泛的研究。 研究生和本科生都将参与这项工作，并将努力提高公众对激光和光束技术的了解以及促进多样性。