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Updated: Apr 13, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
Published on: October 11, 2016
Assessing the impact of position resolution on gamma-ray imaging performance of a Segmented Inverted Coaxial
Owain Griffiths1, Ahmed Alharbi2, Nawaf Altasan1
1Oliver Lodge Laboratory, University of Liverpool, L69 7ZE, UK.
Abstract:
The SIGMA detector is a large-volume segmented inverted coaxial detector, and offers a promising single-crystal solution for gamma-ray tracking and imaging applications. This study evaluates the imaging potential when tracking the gamma rays using Compton kinematics. Experimental results yield angular imaging resolutions of 58.4°, while simulations demonstrated an improvement of up to 57.8%, achieving an angular imaging resolution of 22.4° by using refined position resolutions for gamma-ray interactions within the detector.
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