کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1822455 | 1526342 | 2015 | 6 صفحه PDF | دانلود رایگان |
A two-dimensional scintillation-based neutron detector with wavelength-shifting (WLS) fibers was developed that incorporated a novel data interpolation method. The interpolation method, which was developed for a photon-counting detector, produced an effective pixel size smaller than the physical pitch of the WLS fibers in the array. The WLS-fibers array was constructed by placing fibers at a regular pitch of 2.5 mm in both the x and y directions. The two crossed fiber arrays were sandwiched with two scintillator screens. Detectors with half- and quarter-pitch calculation logics exhibited spatial resolutions of 2.7±0.1 and 2.5±0.1 mm, respectively, for the full width at half maximum (for a 1-mm beam width). The corresponding effective pixel sizes were 1.25 and 0.625 mm. The measured spatial resolutions were approximately 1.3-fold better than that with the standard-pitch calculation logic. The presented results demonstrate the feasibility of using the developed interpolation method with a collimated neutron beam.
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 784, 1 June 2015, Pages 202–207