PVT-NG Sensor Final Report
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
This document is a final report for the polyvinyl toluene (PVT) neutron-gamma (PVT-NG) project, which was sponsored by the Domestic Nuclear Detection Office (DNDO). The PVT-NG sensor uses PVT detectors for both gamma and neutron detection. The sensor exhibits excellent spectral resolution and gain stabilization, which are features that are beneficial for detection of both gamma-ray and neutron sources. In fact, the ability to perform isotope identification based on spectra that were measured by the PVT-NG sensor was demonstrated. As described in a previous report, the neutron sensitivity of the first version of the prototype was about 25% less than the DNDO requirement of 2.5 cps/ng for bare 252Cf. This document describes design modifications that were expected to improve the neutron sensitivity by about 50% relative to the PVT-NG prototype. However, the project was terminated before execution of the design modifications after portal vendors demonstrated other technologies that enable neutron detection without the use of 3He. Nevertheless, the PVT-NG sensor development demonstrated several performance goals that may be useful in future portal designs.
- Research Organization:
- Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); US Department of Homeland Security (DHS); Defense Threat Reduction Agency (DTRA)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1034884
- Report Number(s):
- SAND--2012-0105
- Country of Publication:
- United States
- Language:
- English
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