Evaluation of a gamma camera system for the RITS-6 accelerator using the self-magnetic pinch diode

Timothy J. Webb; Mark L. Kiefer; Raymond Gignac; Stuart A. Baker

doi:10.1117/12.2186628

27 August 2015 Evaluation of a gamma camera system for the RITS-6 accelerator using the self-magnetic pinch diode

Timothy J. Webb, Mark L. Kiefer, Raymond Gignac, Stuart A. Baker

Proceedings Volume 9595, Radiation Detectors: Systems and Applications XVI; 95950K (2015) https://doi.org/10.1117/12.2186628
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

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.

Citation Download Citation

Timothy J. Webb, Mark L. Kiefer, Raymond Gignac, and Stuart A. Baker "Evaluation of a gamma camera system for the RITS-6 accelerator using the self-magnetic pinch diode", Proc. SPIE 9595, Radiation Detectors: Systems and Applications XVI, 95950K (27 August 2015); https://doi.org/10.1117/12.2186628

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