Title: Position sensitive scintillation detector for thermal neutrons
Abstract: A novel one-dimensional position-sensitive scintillation detector for neutron diffraction experiments is described. The detector is composed of 400 6Li glass scintillators, each 5 mm wide, 100 mm long and 1 mm thick, located along an 80° arc. The resolution of the detector is therefore 0.2°. Detection height is adjustable between 10 and 100 mm by means of neutron shielding. Each scintillator is optically coupled via acrylic glass rods to the photocathodes of two PM-tubes to form a coded position-sensitive detector (PSD) system. To code the information of 400 scintillators requires at least 40 PM tubes. In order to simplify the lightguide system 60 PMs have been used. Thermal neutron detection efficiency is 75%. In comparison with gas counters the scintillation PSD has higher detection efficiency and better time resolution. The spatial stability of the detector is excellent, since it is fixed mechanically once the scintillator array is assembled. The window through which neutrons must pass to reach the scintillator need only be a light tight aluminum foil, causing negligible absorption and scattering.
Publication Year: 1982
Publication Date: 1982-05-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 3
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