High energy electron radiography system design and simulation study of beam angle-position correlation and aperture effect on the images

Zhao, Quantang; Cao, Shanshan; Liu, M.; Sheng, Xin; Wang, Y.R.; Zong, Yu; Zhang, X.M.; Jing, Yi; Cheng, Rui; Zhao, Yao; Zhang, Z.M.; Du, Yingchao; Gai, W.

doi:10.1016/j.nima.2016.06.103

Cited by 16 publications

(6 citation statements)

References 5 publications

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“…Relativistic speed beams are taken easily by making the electrons penetrate specimen with millimeter size in several tens of picoseconds; compared with the other relativistic particles, electron has lower magnetic rigidity, which makes it more sensitive to the electromagnetic field; besides, ultrashort bunch is taken easier, to ensure the quasistatic of diagnosed specimen. High-energy electron radiography (HEER) has been developed at LANL, Tsinghua University and Institute of Modern Physics, Chinese Academy of Science, in the past several years [20][21][22][23][24][25][26]. The several microns spatial resolution has been also taken in the experiment.…”

Section: Introductionmentioning

confidence: 99%

Ultrafast High-Energy Electron Radiography Application in Magnetic Field Delicate Structure Measurement

Xiao

Zhang

et al. 2021

Laser Part. Beams

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Transient electromagnetic field plays very important roles in the evolution of high-energy-density matter or laser plasma. Now, a new design is proposed in this paper to diagnose the transient magnetic field, using relativistic electron bunch as a probe based on high-energy electron radiography. And based on this scheme, the continuous distribution of magnetic strength field can be snapshotted. For 1 mm thick quadrupole magnet model measured by 50 MeV probe electron beams, the simulation result indicates that this diagnosis has spatial resolution better than 4 microns and high measurement accuracy for strong magnetic strength and high magnetic gradient field no matter whether the magnetic interaction is focusing or defocusing for the range from -510 T ∗ μm to 510 T ∗ μm.

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Section: Introductionmentioning

confidence: 99%

Ultrafast High-Energy Electron Radiography Application in Magnetic Field Delicate Structure Measurement

Xiao

Zhang

et al. 2021

Laser Part. Beams

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“…With this imaging lens, the T116 and T336 are zero; therefore, the matched beam should be parallel, shown in Figure 1. More details of the beam matching requirement for HEER are referred to in [5]. simulation.…”

Section: The Imaging Lens Designmentioning

confidence: 99%

“…High-energy electron radiography (HEER) was proposed as a high spatial and temporal resolution probe tool for high-energy-density physics (HEDP) and inertial confinement fusion (ICF) experimental diagnostic studies [1,2]. In recent years, HEER technology was well developed through both simulations and experiments [3][4][5][6][7][8]. Radiography can be performed with a ps pulse-width electron beam, achieving a spatial resolution close to 1 µm in an experiment with a large magnification imaging lens [9].…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional High-Energy Electron Radiography Method for Static Mesoscale Samples Diagnostics

Zhao

Xiao

et al. 2019

Applied Sciences

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In this paper, we propose a new method for static mesoscale sample diagnosis using three-dimensional radiography with high-energy electron radiography (HEER). The principle of three-dimensional high-energy electron radiography (TDHEER) is elucidated, and the feasibility of this method is confirmed by start-to-end simulation results. TDHEER is realized by combining HEER with the three-dimensional reconstruction method, by which more information about the samples can be attained, especially regarding the samples’ internal structures. With our study, the internal structures and the three-dimensional positions of the spherical sample are determined with a ~3 μm resolution. We believe that this new method enhances the HEER diagnostic capability and extends its application potential in mesoscale sciences.

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“…[ 10 ] Efforts have been made to improve the resolution of high energy electron radiography which promote the spatial resolution from 100 μm level to sub‐micron even nanometer level and temporal resolution from nanosecond to picosecond in conventional accelerators. [ 11–15 ] Recently, a dynamics image for melting and freezing process of alloy (Bi 80 Sn 20 ) using 14 GeV electron beam with an 8.8 μm resolution has been achieved at Stanford Linear Accelerator Center (SLAC) through transmission high energy electron microscopy (THEEM). [ 12 ] The entire dynamics process is monitored for a half hour at ≈5 Hz.…”

Section: Introductionmentioning

confidence: 99%

Direct Imaging with Hundreds of MeV Electron Bunches from Laser Wakefield Acceleration

Cai

et al. 2020

Physica Status Solidi (a)

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Direct imaging is a key tool for diagnostics of density transition in different material composition. Ultrafast electron bunches from 100 TW‐level laser system are attractive in future applications. Experiments for direct imaging with 100 MeV electrons are conducted using a 200 TW laser facility in Peking University. Electron bunches with energy spectra ranging from 100 to 150 MeV are achieved with a mixture gas of 0.5% nitrogen and 99.5% helium. Herein, the contrast imaging, transmission, and slit experiments are conducted and analyzed. It turns out the superiority of the hundreds of MeV electrons in thick material imaging applications. It is also anticipated that this technology can be used for ultrafast dynamic analysis with the advent of higher charge electrons in a single ultrafast bunch from laser‐driven electron accelerators.

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High energy electron radiography system design and simulation study of beam angle-position correlation and aperture effect on the images

Cited by 16 publications

References 5 publications

Ultrafast High-Energy Electron Radiography Application in Magnetic Field Delicate Structure Measurement

Ultrafast High-Energy Electron Radiography Application in Magnetic Field Delicate Structure Measurement

Three-Dimensional High-Energy Electron Radiography Method for Static Mesoscale Samples Diagnostics

Direct Imaging with Hundreds of MeV Electron Bunches from Laser Wakefield Acceleration

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