Status of the Dual Axis Radiographic Hydrodynamics Test (DARHT) Facility

Burns, Michael J.; Caporaso, G.J.; Carlsten, Bruce E.; Chen, Yu‐Jiuan; Chow, K.; Cook, E.G.; Davis, H.A.; Ekdahl, C.A.; Fawle, William M.; Fortgang, C.M.; Hughes, T.P.; McCuistian, B.T.; Nielsen, K.; Rutkowski, H.L.; Sampayan, S.; Waldron, W. L.; Watson, J.; Westenskow, G.; Yu, S.S.

doi:10.1063/1.1530820

Cited by 16 publications

(5 citation statements)

References 4 publications

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“…This reinvigorated a proposal to replace PHERMEX with a two-axis radiographic facility providing higher doses, better position resolution, and covering a wider time range with several x-ray pulses. The first axis of this new facility, Dual-Axis Radiographic Hydrodynamic Test Facility (DARHT) (figure 3) (Burns et al 2002), was commissioned in 2001. It provides two kilo-ampere-class perpendicular beams of electrons in a ∼1 mm spot.…”

Section: Thick Objects In X-ray Radiographymentioning

confidence: 99%

Charged particle radiography

Morris¹,

King²,

Kwiatkowski³

et al. 2013

Rep. Prog. Phys.

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New applications of charged particle radiography have been developed over the past two decades that extend the range of radiographic techniques providing high-speed sequences of radiographs of thicker objects with higher effective dose than can be obtained with conventional radiographic techniques. In this paper, we review the motivation and the development of flash radiography and in particular, charged particle radiography.

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Section: Thick Objects In X-ray Radiographymentioning

confidence: 99%

Charged particle radiography

Morris¹,

King²,

Kwiatkowski³

et al. 2013

Rep. Prog. Phys.

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“…The Dual-Axis Radiography for Hydrodynamic Testing (DARHT) facility at Los Alamos was built to provide the experimenter with flash radiographs from two directions [106,107]. Two LIAs produce the radiographic source spots for orthogonal views of each test.…”

Section: Darhtmentioning

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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“…The second axis of the DARHT flash X-ray facility at Los Alamos National Laboratory ("DARHT-II") is a multiple-pulse, 18.4 MeV, 2 kA induction electron linear accelerator [1]. A train of short (~50 ns) pulses are converted via bremsstrahlung to X-rays, which are then used to make radiographic images at various times (nominally four) during a "hydrotest" experiment.…”

Section: Introductionmentioning

confidence: 99%

A Study of the Ion Hose Instability in the DARHT-II Downstream Transport Region

McCarrick¹

2004

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Status of the Dual Axis Radiographic Hydrodynamics Test (DARHT) Facility

Cited by 16 publications

References 4 publications

Charged particle radiography

Charged particle radiography

Particle Beam Radiography

A Study of the Ion Hose Instability in the DARHT-II Downstream Transport Region

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