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Proceedings Paper

Ultrafast imaging of nanosecond pulse x-ray simulators
Author(s): Graham W. Smith; David S. George; David Harrison; Stephen Hill; Robert J. Hohlfelder; Victor Harper-Slaboszewicz; Roque R. Gallegos; Martin B. Ingle; Peter Simpson
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Paper Abstract

Ultra fast X-ray imaging has been undertaken upon AWE's and 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 paper highlights the new ULTRA fast framing camera, developed by Photek Ltd. in-conjunction with AWE, which is capable of imaging up to 500 Million frames per second. Unique sequences of time resolved high spatial resolution images, have been captured in the nanosecond timeframe with zero interframe time, of the source x-rays, utilising our novel configurations. Further, a dedicated diagnostic experiment capturing time resolved x-ray phenomenon, utilising a customised streak tomographic technique, with a multi-billion frames per second recording and 2048 frames capture sequence capability, is described. The fundamental principles of our imaging systems can be applied to other visible and x-ray imaging scenarios.

Paper Details

Date Published: 10 February 2009
PDF: 11 pages
Proc. SPIE 7126, 28th International Congress on High-Speed Imaging and Photonics, 712603 (10 February 2009); doi: 10.1117/12.819937
Show Author Affiliations
Graham W. Smith, Atomic Weapons Establishment plc (United Kingdom)
David S. George, Atomic Weapons Establishment plc (United Kingdom)
David Harrison, Atomic Weapons Establishment plc (United Kingdom)
Stephen Hill, Atomic Weapons Establishment plc (United Kingdom)
Robert J. Hohlfelder, Sandia National Labs. (United States)
Victor Harper-Slaboszewicz, Sandia National Labs. (United States)
Roque R. Gallegos, Sandia National Labs. (United States)
Martin B. Ingle, Photek Ltd. (United Kingdom)
Peter Simpson, Photek Ltd. (United Kingdom)

Published in SPIE Proceedings Vol. 7126:
28th International Congress on High-Speed Imaging and Photonics
Harald Kleine; Martha Patricia Butron Guillen, Editor(s)

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