Neutron imaging is a non-destructive testing method used across many scientific disciplinaries for its ability to radiographically image internal structures of materials compared to other particles. This work creates a microchannel plate micro collimator in Monte-Carlo N-Particle Code and images a gadolinium foil across multiple collimator lengths with neutrons. Resolutions of the images taken are obtained through grayscale image reconstruction of radiograph flux values, then analyzed through an ImageJ plugin. This study uses a 2 cm diameter disk source emitting thermal neutrons in random directions to suggest that a length-microchannel diameter ratio of approximately 100 is needed for 30 𝜇𝑚 resolution. This resolution can be achieved with 6 𝑐𝑚 of neutron travel between the source and foil, replacing current state of the art traditional collimators which would require an over 666 c𝑚 collimation distance.

• This report represents the work of one or more WPI undergraduate students submitted to the faculty as evidence of completion of a degree requirement. WPI routinely publishes these reports on its website without editorial or peer review.

Creator

• Jolicoeur, Brock

Publisher

• Worcester Polytechnic Institute

Identifier

• 63116
• E-project-042122-163009

Keyword

• MicroCollimator
• Neutron Imaging

Advisor

• Medich, David Christopher

Year

• 2022

Sponsor

• STAR: Arts and Sciences Fellowship Program

Date created

• 2022-04-21

Resource type

• Major Qualifying Project

Major

• Physics

Rights statement

• In Copyright