National Nuclear Security Administration

A snapshot of NNSA’s counterterrorism mission

August 19, 2016

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NNSA’s mission of counterterrorism and counterproliferation is supported through innovative science and technology. Recently, Associate Administrator and Deputy Undersecretary for Counterterrorism and Counterproliferation Jay Tilden visited Oak Ridge National Laboratory (ORNL) and met with team members who support that important mission.

From left, Tilden, ORNL Site Office Manager Johnny Moore, the Research Accelerator Division’s George Dodson, and Doug Paul, also with the Site Office, walk towards the target building at the Spallation Neutron Source. The Spallation Neutron Source (SNS) is an accelerator-based research facility that provides the world’s most intense pulsed neutron beams for scientific research and industrial development.

From left, Paul, Dodson, and Tilden view an instrument beam line in SNS’s target building. Each instrument at the facility is designed for experiments with specific types of samples. Researchers bring materials (which can be anywhere from centimeters to meters wide) to place in the path of the neutron beam.

From left, Doug Reed, ORNL Site Office; Tilden; and Tim Powers, Research Reactors Division Director discuss neutron scattering at the High Flux Isotope Reactor (HFIR). HFIR is a versatile 85-MW isotope production, research, and test reactor for performing a variety of irradiation experiments and  supporting a world-class neutron scattering science program. The neutron scattering facilities at HFIR are used for research on the structure and dynamics of matter.

Tim Powers, Research Reactors Division Director, left, and Tilden discuss neutron scattering at the High Flux Isotope Reactor.