High-energy x-ray imaging diagnostics of nanosecond pulse accelerators

Graham W. Smith; Robert J. Hohlfelder; Alun J. Tribe; David E. Beutler; Roque R. Gallegos; Calvin L. G. Seymour; Jon A. Thompson

doi:10.1117/12.725055

11 January 2007 High-energy x-ray imaging diagnostics of nanosecond pulse accelerators

Graham W. Smith, Robert J. Hohlfelder, Alun J. Tribe, David E. Beutler, Roque R. Gallegos, Calvin L. G. Seymour, Jon A. Thompson

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Proceedings Volume 6279, 27th International Congress on High-Speed Photography and Photonics; 627905 (2007) https://doi.org/10.1117/12.725055
Event: 27th International congress on High-Speed Photography and Photonics, 2006, Xi'an, China

Abstract

X-ray imaging has been undertaken on Sandia National Laboratories' radiation effects x-ray simulators. These simulators typically yield a single very short (<20ns) pulse of high-energy (MeV endpoint energy bremsstrahlung) x-ray radiation with doses in the kilorad (krad (Si)) region. X-ray source targets vary in size from 2 to 25cm diameter, dependent upon the particular simulator. Electronic imaging of the source x-ray emission under dynamic conditions yields valuable information upon how the simulator is performing. The resultant images are of interest to the simulator designer who may configure new x-ray source converter targets and diode designs. The images can provide quantitative information about machine performance during radiation effects testing of components under active conditions. The effects testing program is a valuable interface for validation of high performance computer codes and models for the radiation effects community. A novel high-energy x-ray imaging spectrometer is described whereby the spectral energy (0.5 to 1.8MeV) profile may be discerned from the digitally recorded and viewable images via a pinhole/scintillator/CCD imaging system and knowledge of the filtration parameters. Unique images, analysis and an evaluation of the capability of the spectrometer are presented.

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Graham W. Smith, Robert J. Hohlfelder, Alun J. Tribe, David E. Beutler, Roque R. Gallegos, Calvin L. G. Seymour, and Jon A. Thompson "High-energy x-ray imaging diagnostics of nanosecond pulse accelerators", Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 627905 (11 January 2007); https://doi.org/10.1117/12.725055

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KEYWORDS

X-ray imaging

X-rays

Saturn

Scintillators

Diodes

X-ray sources

Image filtering

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