Development of a Neutron Radiography Facility at the Oregon State TRIGA~® Reactor

摘要

The Oregon State TRIGA Reactor (OSTR) is a 1.1-MW water-cooled, swimming pool type of research reactor that uses high enriched uranium/zirconium hydride matrix fuel elements in a circular grid array, surrounded by a graphite reflector. The OSTR first went critical in March 1967. Major irradiation facilities include a pneumatic transfer (rabbit) system, a rotating rack, a thermal column, sample holding dummy fuel elements, and two types of in-core vertical tubes. The OSTR also includes four beam ports for use in gamma and neutron radiography. In recent years a concentrated effort has been made to increase the utilization of the four beam ports. Beam ports 1, 2, and 4 are all radial in orientation to the core. Beam port 3 is tangentially oriented to the core, making it ideally suited for thermal neutron radiography.