DARHT accelerators update and plans for initial operation

M. J. Burns, B. E. Carlsten, T. J T Kwan, D. C. Moir, D. S. Prono, S. A. Watson, E. L. Burgess, H. L. Rutkowski, George J Caporaso, Y. J. Chen, Y. J. Chen, S. Sampayan, G. Westenskow

Research output: Chapter in Book/Report/Conference proceedingConference contribution

37 Scopus citations

Abstract

The Dual-Axis Radiographic Hydrodynamics Test (DARHT) facility will use two perpendicular electron Linear Induction Accelerators to produce intense, bremsstrahlung x-ray pulses for flash radiography. We intend to produce measurements containing three-dimensional information with sub-millimeter spatial resolution of the interior features of very dense explosively driven objects. The facility will be completed in two phases with the first operational by June 1999 utilizing a single-pulse, 19.8-MeV, 2 to 4-kA, 60-ns accelerator (activated in March 1999), a high-resolution electro-optical x-ray imaging system, and other hydrodynamics testing systems. The second phase will be operational by Sept. 2002 and features the addition of a 20-MeV, 2 to 4-kA, 2-microsecond accelerator. Four short electron micropulses of variable pulse-width and spacing will be chopped out of the original, long accelerator pulse for producing time-resolved x-ray images. The second phase also features an extended, high-resolution electro-optical x-ray system with a framing speed of about 2-Mhz. In this paper we will present a Figure-Of-Merit for a x-ray based flash radiography system to motivate the selection of accelerator parameters. We will then present sub-system performance measurements from Phase 1, the physics of the interaction of our high-intensity beams with the x-ray conversion target, initial Phase 1 accelerator measurements (if available), and plans for operation. We will also discuss designs and prototype testing results for the 2-microsecond Phase 2 accelerator, including prototype induction cells and pulsed power, prototype kicker magnet performance to chop the beam, and design considerations for a multipulse x-ray conversion target.

Original languageEnglish (US)
Title of host publicationProceedings of the IEEE Particle Accelerator Conference
Place of PublicationPiscataway, NJ, United States
PublisherIEEE
Pages617-621
Number of pages5
Volume1
StatePublished - 1999
Externally publishedYes
EventThe 18th Biennial Particle Accelerator Conference - New York, NY, USA
Duration: Mar 27 1999Apr 2 1999

Other

OtherThe 18th Biennial Particle Accelerator Conference
CityNew York, NY, USA
Period3/27/994/2/99

ASJC Scopus subject areas

  • Engineering(all)

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    Burns, M. J., Carlsten, B. E., Kwan, T. J. T., Moir, D. C., Prono, D. S., Watson, S. A., Burgess, E. L., Rutkowski, H. L., Caporaso, G. J., Chen, Y. J., Chen, Y. J., Sampayan, S., & Westenskow, G. (1999). DARHT accelerators update and plans for initial operation. In Proceedings of the IEEE Particle Accelerator Conference (Vol. 1, pp. 617-621). IEEE.