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论文成果
Emittance growth analysis of laser-driven broad energy spectral proton beams
发布时间：2024-08-09点击次数：
影响因子：
0.0
DOI码：
10.1103/PhysRevAccelBeams.27.041303
发表刊物：
PHYSICAL REVIEW ACCELERATORS AND BEAMS
摘要：
With the rapid development of high-gradient laser plasma acceleration, implementing it in practical applications has become a priority. However, to go from “acceleration” to “accelerator,” a beam line system is required to accurately control the beam parameters according to different irradiation requirements. The
laser-accelerated proton beam is characterized by a micron-scale original source size and a small emittance as low as 0.004 mm mrad [T. E. Cowan et al., Phys. Rev. Lett. 92, 204801 (2004)]. However, due to the broad energy spread and large divergence, its initial ultralow emittance will increase rapidly in the subsequent transmission process. This indicates that designing a beamline for laser-driven protons is challenging and differs significantly from that of a conventional accelerator. As a fundamental parameter
for beam line design, we have theoretically derived the emittance growth law for laser-driven protons in both drift space and in a focusing element. The results demonstrate that the beam emittance deteriorates sharply with the energy spread and the square of the divergence angle. These theoretical calculations have
been verified both in experiments and simulations. This work is helpful for designing subsequent beam lines that pursue high transmission efficiency and achromatic ability.
论文类型：
期刊论文
学科门类：
工学
一级学科：
核科学与技术
卷号：
27
期号：
041303
是否译文：
否
发表时间：
2024-04-22
收录刊物：
SCI