R&amp;D Status of High-current Accelerators at IFP

Deng, J.; Shi, J. S.; Xie, Weiping; Zhang, L. W.; Zhang, K. Z.; Shi, Feng; Li, J.; Wang, M.; He, Yuan; Lianshen, Xia; Dai, Zhiyong; Li, H. T.; Luo, Wen; Chen, S. F.; Li, X.; Lai, Qingui; Xia, Mingxu; Guan, Yong; Song, S.; Gu, Yuancao; Chen, L.; Zhou, Lei; He, An; Zhou, W.

doi:10.3938/jkps.59.3619

Cited by 7 publications

(8 citation statements)

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“…The stability and the reliability of the pulsed power system strongly depend on the performance of the switches used in the system. Different types and parameters of switches have been studied and designed for different purposes [1]- [5]. The typical switch applied for the Marx generators is the coaxial spark gap gas switch with working voltage of 200 kV and jitter of 2 ns [2].…”

Section: A High-power Switches With Low Jittermentioning

confidence: 99%

“…The typical switch applied for the Marx generators is the coaxial spark gap gas switch with working voltage of 200 kV and jitter of 2 ns [2]. The cylindrical gas switch working at voltage of 300-400 kV with time jitter of less than 1 ns was designed for the LIA [1]. Selfbreakdown water switch with working voltage of 3 MV at current of 500 kA was developed for Z -pinch driver [4].…”

Section: A High-power Switches With Low Jittermentioning

confidence: 99%

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Overview of Pulsed Power Research at CAEP

Deng

Shi

Xie

et al. 2015

IEEE Trans. Plasma Sci.

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Pulsed power research for military and civil applications has been conducted at the China Academy of Engineering Physics (CAEP) for more than 50 years. The pulsed power research activities include development of pulsed power components, such as different kinds of high-voltage switches, series of pulsed power sources and pulsed X-ray machines, highcurrent accelerators for Z-pinch and flash X-ray radiography, as well as medical application and electromagnetic launch. The most recent progress of pulsed power research at CAEP will be presented.

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Section: A High-power Switches With Low Jittermentioning

confidence: 99%

Section: A High-power Switches With Low Jittermentioning

confidence: 99%

Overview of Pulsed Power Research at CAEP

Deng

Shi

Xie

et al. 2015

IEEE Trans. Plasma Sci.

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“…The Institute for Fluid Physics in China is home to three LIAs for flash radiography: LIAXF, Dragon-I and Dragon-II [99][100][101][102][103][104][105]. LIAXF and Dragon-I are single pulse accelerators, but Dragon-II has three pulses.…”

Section: Accelerators At the Ifpmentioning

confidence: 99%

Particle Beam Radiography

Peach

Ekdahl

2013

Rev. Accl. Sci. Tech.

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Particle beam radiography, which uses a variety of particle probes (neutrons, protons, electrons, gammas and potentially other particles) to study the structure of materials and objects noninvasively, is reviewed, largely from an accelerator perspective, although the use of cosmic rays (mainly muons but potentially also high-energy neutrinos) is briefly reviewed. Tomography is a form of radiography which uses multiple views to reconstruct a three-dimensional density map of an object. There is a very wide range of applications of radiography and tomography, from medicine to engineering and security, and advances in instrumentation, specifically the development of electronic detectors, allow rapid analysis of the resultant radiographs. Flash radiography is a diagnostic technique for large high-explosive-driven hydrodynamic experiments that is used at many laboratories. The bremsstrahlung radiation pulse from an intense relativistic electron beam incident onto a high-Z target is the source of these radiographs. The challenge is to provide radiation sources intense enough to penetrate hundreds of g/cm 2 of material, in pulses short enough to stop the motion of high-speed hydrodynamic shocks, and with source spots small enough to resolve fine details. The challenge has been met with a wide variety of accelerator technologies, including pulsed-power-driven diodes, air-core pulsed betatrons and high-current linear induction accelerators. Accelerator technology has also evolved to accommodate the experimenters' continuing quest for multiple images in time and space. Linear induction accelerators have had a major role in these advances, especially in providing multiple-time radiographs of the largest hydrodynamic experiments.

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“…Second, there must be a discontinuity within the accelerator walls such as accelerating gaps. This latter point makes the instability especially concerning for users of linear induction accelerators (LIAs) [4][5][6] and for present designers of new LIAs such as the Los Alamos National Laboratory, the Institute of Fluid Physics (China Academy of Engineering Physics) [7], and the Budker Institute of Nuclear Physics (Russian Academy of Sciences) [8].…”

Section: Introductionmentioning

confidence: 99%

Direct measurement of the image displacement instability in a linear induction accelerator

Burris-Mog

Ekdahl

Moir

2017

Phys. Rev. Accel. Beams

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The image displacement instability (IDI) has been measured on the 20 MeV Axis I of the dual axis radiographic hydrodynamic test facility and compared to theory. A 0.23 kA electron beam was accelerated across 64 gaps in a low solenoid focusing field, and the position of the beam centroid was measured to 34.3 meters downstream from the cathode. One beam dynamics code was used to model the IDI from first principles, while another code characterized the effects of the resistive wall instability and the beam breakup (BBU) instability. Although the BBU instability was not found to influence the IDI, it appears that the IDI influences the BBU. Because the BBU theory does not fully account for the dependence on beam position for coupling to cavity transverse magnetic modes, the effect of the IDI is missing from the BBU theory. This becomes of particular concern to users of linear induction accelerators operating in or near low magnetic guide fields tunes.

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R&D Status of High-current Accelerators at IFP

Cited by 7 publications

References 0 publications

Overview of Pulsed Power Research at CAEP

Overview of Pulsed Power Research at CAEP

Particle Beam Radiography

Direct measurement of the image displacement instability in a linear induction accelerator

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