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

被引：0
作者：
Webb, Timothy J. [1 ]
Kiefer, Mark L. [1 ]
Gignac, Raymond [2 ]
Baker, Stuart A. [2 ]
机构：
[1] Sandia Natl Labs, Albuquerque, NM 87185 USA
[2] Natl Secur Technol LLC, Las Vegas, NV 89193 USA
来源：
RADIATION DETECTORS: SYSTEMS AND APPLICATIONS XVI | 2015年 / 9595卷
关键词：
Flash x-ray radiography; scintillators; pulsed power; gamma camera; self-magnetic pinch diode;
D O I：
10.1117/12.2186628
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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.
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页数：7
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