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초강력 레이저 과학 연구단
초강력 레이저과학 연구단
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Accurate single-shot measurement technique for the spectral distribution of GeV electron beams from a laser wakefield accelerator

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Title
Accurate single-shot measurement technique for the spectral distribution of GeV electron beams from a laser wakefield accelerator
Author(s)
C. I. Hojbota; Hyung Taek Kim; Jung Hun Shin; C. Aniculaesei; B. S. Rao; Chang Hee Nam
Publication Date
2019-08
Journal
AIP ADVANCES, v.9, no.8, pp.085229 -
Publisher
AMER INST PHYSICS
Abstract
© 2019 Author(s).We present a technique, based on a dipole magnet spectrometer containing multiple scintillation screens, to accurately characterize the spectral distribution of a GeV electron beam generated by laser wakefield acceleration (LWFA). An optimization algorithm, along with a numerical code, was developed for trajectory tracking and reconstructing the electron beam angle, divergence, and energy spectrum with a single-shot measurement. The code was validated by comparing the results with the Monte-Carlo simulation of electron beam trajectories. We applied the method to analyze data obtained from laser wakefield acceleration experiments performed using a multi-Petawatt laser to accelerate electron beams to multi-GeV energy. Our technique offers a high degree of accuracy to faithfully characterize electron beams with the nonnegligible shot-to-shot beam pointing fluctuations, particularly in the state-of-the-art multi-GeV LWFA experiments performed to push the energy frontier
URI
https://pr.ibs.re.kr/handle/8788114/6895
ISSN
2158-3226
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > Journal Papers (저널논문)
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