Conceptual Optics Design of the CUPI2D Beamline at the Spallation Neutron Source Second Target Station
摘要
The Oak Ridge National Laboratory’s Spallation Neutron Source is planning to add new capabilities centered around high fluxes of cold neutrons as part of the Second Target Station. Among the proposed instruments is a time-of-flight imaging beamline, called CUPI2D, optimized for dynamic measurements in advanced materials such as energy materials and superalloys, using two techniques: Bragg edge imaging and neutron grating interferometry. Since the Second Target Station will produce a bright pulse of cold neutrons, the beamline will capture phenomena in situ within seconds to minutes in two dimensions. It will also be capable of capturing computed tomography data using both aforementioned techniques. This manuscript explains how CUPI2D complements the VENUS beamline currently under commissioning at the Spallation Neutron Source and focuses on the beamline requirements and optics.