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Proceedings Paper

Evaluation of a gamma camera system for the RITS-6 accelerator using the self-magnetic pinch diode
Author(s): Timothy J. Webb; Mark L. Kiefer; Raymond Gignac; Stuart A. Baker
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Paper Abstract

The self-magnetic pinch (SMP) diode is an intense radiographic source fielded on the Radiographic Integrated Test Stand (RITS-6) accelerator at Sandia National Laboratories in Albuquerque, NM. The accelerator is an inductive voltage adder (IVA) that can operate from 2-10 MV with currents up to 160 kA (at 7 MV). The SMP diode consists of an annular cathode separated from a flat anode, holding the bremsstrahlung conversion target, by a vacuum gap. Until recently the primary imaging diagnostic utilized image plates (storage phosphors) which has generally low DQE at these photon energies along with other problems. The benefits of using image plates include a high-dynamic range, good spatial resolution, and ease of use. A scintillator-based X-ray imaging system or “gamma camera” has been fielded in front of RITS and the SMP diode which has been able to provide vastly superior images in terms of signal-to-noise with similar resolution and acceptable dynamic range.

Paper Details

Date Published: 27 August 2015
PDF: 7 pages
Proc. SPIE 9595, Radiation Detectors: Systems and Applications XVI, 95950K (27 August 2015); doi: 10.1117/12.2186628
Show Author Affiliations
Timothy J. Webb, Sandia National Labs. (United States)
Mark L. Kiefer, Sandia National Labs. (United States)
Raymond Gignac, National Security Technologies, LLC (United States)
Stuart A. Baker, National Security Technologies, LLC (United States)


Published in SPIE Proceedings Vol. 9595:
Radiation Detectors: Systems and Applications XVI
Gary P. Grim; H. Bradford Barber, Editor(s)

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