CAREER: Computing Radiation Spectra in Compton Sources with High Precision

职业：高精度计算康普顿源的辐射光谱

基本信息

批准号：
1847771
负责人：
Balsa Terzic
金额：
$ 50万
依托单位：
Old Dominion University Research Foundation
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2019
资助国家：
美国
起止时间：
2019-07-01 至 2025-06-30
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1847771&HistoricalAwards=false
关键词：
CAREER Computing Radiation Spectra Compton

项目摘要

X-rays enable scientists to study the internal structure of materials on all length scales from the macroscopic down to the positions of individual atoms. This capability has had profound impact on science, technology, and on the world economy. The community is in agreement that future advances in many areas of science and technology depend on understanding the structure-function relationships at the nano-scale, where new properties emerge. Controlling the fabrication of complex materials at that scale will allow for novel physical, chemical, and biological functionality. Output flux and brilliance of Compton sources rivals, and by some measures exceeds, modern synchrotron sources, bringing the most advanced scientific and medical X-ray probe into the university, industrial, and medical laboratory. In this context, this project will improve the calculation of radiation spectra in Compton sources. If successful, the new approach is expected to play a pivotal role in ushering a new era in hard X-ray source technology. Combined with powerful optimization tools, this will lead to substantial improvements in performance for all existing and future Compton sources.When a relativistic electron beam interacts with a laser beam, intense and highly collimated electromagnetic radiation is generated through Compton scattering. Increasing the laser intensity changes the longitudinal velocity of the electrons during their collision, which leads to considerable broadening in the scattered radiation spectra. The effects of such ponderomotive broadening are so deleterious that most Compton sources either remain at low laser intensities or pay a steep price to operate at a small fraction of the physically possible peak spectral output. In this project, the PI and his collaborators will build on previous work that showed that the ponderomotive broadening for individual electrons can be eliminated by suitable frequency modulation (chirping) of the incident laser wave. The PI will generalize this chirping prescription to realistic electron beams and laser pulses, in order to quantify its advantages. High-fidelity simulations of Compton sources with chirping are expected to lead to substantial savings in the operational costs of the existing as well as the design and construction cost of new Compton sources.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

X射线使科学家能够研究从宏观到各个原子位置的所有长度尺度上的材料的内部结构。这种能力对科学，技术和世界经济产生了深远的影响。社区同意的是，科学和技术许多领域的未来进步取决于了解新属性出现的纳米级的结构 - 功能关系。在该规模上控制复杂材料的制造将允许新颖的物理，化学和生物学功能。康普顿资源竞争对手的输出通量和光彩，并通过某些措施超出了现代同步源，将最先进的科学和医学X射线探针带入了大学，工业和医疗实验室。在这种情况下，该项目将改善康普顿源中辐射光谱的计算。如果成功的话，新方法有望在迎来硬X射线源技术的新时代中发挥关键作用。结合强大的优化工具，这将导致所有现有和未来的康普顿源的性能大大改善。当相对论电子束与激光束相互作用时，通过康普顿散射产生强烈而高度的电磁辐射。增加激光强度会改变电子碰撞期间电子的纵向速度，从而导致散射辐射光谱的大幅增长。这种洪代势宽的影响是如此有害，以至于大多数康普顿源要么保持低激光强度，要么支付陡峭的价格以在物理上可能的峰值光谱输出的一小部分中运行。在这个项目中，PI和他的合作者将基于先前的工作，表明可以通过适当的频率调制（chiring）对事件激光波的适当频率调制（chi）来消除对单个电子的蓬勃发展拓宽。 PI将将这种chi的处方概括为逼真的电子束和激光脉冲，以量化其优势。对Compton来源进行的高保真模拟预计有望在现有的现有成本以及新的康普顿资源的设计和建设成本中节省大量资金。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子和更广泛影响的评估来通过评估来支持的，并具有更广泛的影响。

项目成果

期刊论文数量（7）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Laser chirping in inverse Compton sources at high electron beam energies and high laser intensities

DOI：
10.1103/physrevaccelbeams.24.094401
发表时间：
2021-09
期刊：
Physical Review Accelerators and Beams
影响因子：
1.7
作者：
B. Terzić;J. McKaig;E. Johnson;T. Dharanikota;G. Krafft
通讯作者：
B. Terzić;J. McKaig;E. Johnson;T. Dharanikota;G. Krafft

A Laser Frequency Transverse Modulation Might Compensate for the Spectral Broadening Due to Large Electron Energy Spread in Thomson Sources

DOI：
10.3390/photonics9020062
发表时间：
2022-01
期刊：
Photonics
影响因子：
2.4
作者：
V. Petrillo;I. Drebot;G. Krafft;C. Maroli;A. Rossi;M. Rossetti Conti;M. Ruijter;B. Terzić
通讯作者：
V. Petrillo;I. Drebot;G. Krafft;C. Maroli;A. Rossi;M. Rossetti Conti;M. Ruijter;B. Terzić

Emittance in nonlinear Thomson scattering

非线性汤姆逊散射中的发射率