Nuclear Engineering ETDs

Publication Date

9-12-2014

Abstract

Proton radiography techniques in use at Los Alamos National Lab and elsewhere depend upon permanent magnet quadrupoles in their magnetic optics. Radiation exposure during radiography experiments is known to damage these lenses and degrade image quality. This effect is studied under controlled conditions, leading to the conclusion that nonuniform radiation damage is inherent to the quadrupole configuration and results in increased multipole moments which degrade the imaging performance. Studies on magnet samples suggest that Samarium Cobalt is at least a thousand times more radiation-tolerant and should be used as a replacement for NdFeB in magnetic lenses for high-dose proton radiography.

Keywords

magnet, PMQ, radiography

Sponsors

Department of Energy

Document Type

Thesis

Language

English

Degree Name

Nuclear Engineering

Level of Degree

Masters

Department Name

Nuclear Engineering

First Committee Member (Chair)

Cooper, Gary

Second Committee Member

Prinja, Anil K.

Third Committee Member

Merrill, Frank

Fourth Committee Member

Rodriguez, Salvador

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