Quantum Beam Sci., Volume 8, Issue 2 (June 2024) – 7 articles
Cover Story (view full-size image):
A high signal-to-background ratio (SBR) is desirable for a neutron diffractometer to acquire high-quality diffraction patterns. In addition to excluding many backgrounds from the surrounding environment by using a coarse collimator, a 3D-printed fine radial collimator equipped at the front is found to remarkably boost the diffraction SBR for an area detector bank. A fine collimator that is directly printed using plastics shows excellent collimation effects with high SBR, with no need to exposure the body to neutron-absorbing elements like boron. This work investigated various collimation configurations in a large and complex instrument space using the engineering materials diffractometer VULCAN at the Spallation Neutron Source, Oak Ridge National Laboratory. View this paper
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