Coded source neutron imaging at the PULSTAR reactor

Conference · Sat Oct 01 04:00:00 EDT 2011

DOI:https://doi.org/10.1016/j.nima.2010.10.049· OSTI ID:1036212

Xiao, Ziyu ^[1]; Mishra, Kaushal ^[1]; Hawari, Ayman ^[1]; Bingham, Philip ^[2]; Bilheux, Hassina Z. ^[2]; Tobin Jr, Kenneth ^[2]

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1. North Carolina State University (NCSU), Raleigh
2. ORNL

A neutron imaging facility is located on beam-tube No.5 of the 1-MW PULSTAR reactor at North Carolina State University. An investigation of high resolution imaging using the coded source imaging technique has been initiated at the facility. Coded imaging uses a mosaic of pinholes to encode an aperture, thus generating an encoded image of the object at the detector. To reconstruct the image data received by the detector, the corresponding decoding patterns are used. The optimized design of coded mask is critical for the performance of this technique and will depend on the characteristics of the imaging beam. In this work, a 34 x 38 uniformly redundant array (URA) coded aperture system is studied for application at the PULSTAR reactor neutron imaging facility. The URA pattern was fabricated on a 500 ?m gadolinium sheet. Simulations and experiments with a pinhole object have been conducted using the Gd URA and the optimized beam line.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1036212
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
APERTURES
DESIGN
GADOLINIUM
NEUTRONS
PERFORMANCE
RADIATIONS
REACTORS
RESOLUTION