Large-Area TOF Neutron Detector Using Scintillating Nanoguide And Ultra-Fast Microchannel PMT

Time-of-flight neutron imaging gives a 4th dimensional modality for materials identification and discrimination yielding enhanced contrast and ability to more accurately resolve elements within a heterogenous structure. Large pulsed user facilities, such as the 25m-long Versatile Neutron Imaging Instrument at Oak Ridge National Lab or the 90m-long Time-of-Flight experiment at LANSCE at Los Alamos, can benefit from next-generation imaging detectors with high spatial resolution 20MHz), large-area format to image large object areas 20cmx20cm or more), and the ability to detect neutrons over a wide rate of energies from cold-to- thermal-to-epithermal. These detectors have to survive high neutron fluence over years of operation with quantifiable calibration for user data fidelity. This SBIR innovation eliminates active vacuum hardware needed with conventional 10B-loaded MCP detection approaches, allows separation of the neutron detection medium from high-speed electronics for longevity, enables novel detector response over a broad range of neutron energies while preserving spatial dependence, and is tileable into large area formats for imaging. The technique is suitable for ruggedized field radiography applications as well for the industrial imaging market. The output from the SBIR program would support neutron sciences and provide a new detector pathway for fast timing and imaging resolution required for spatial and arrival energy) discrimination for pulsed neutron sources. Portable industrial accelerators can leverage this technology for NDE/NDT and commercial use. The SBIR program will also support emerging small businesses and job creation in the Midwest.