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A novel 2-D cosmic ray position detector has been built and studied.It is integrated from a CsI(Na) crystal pixel array,an optical fiber array,an image intensifier and an ICCD camera.The 2-D positions of one cosmic ray track is determined by the location of a fired CsI(Na) pixel.The scintillation light of these 1.0×1.0 mm CsI(Na) pixels is delivered to the image intensifier through fibers.The light information is recorded in the ICCD camera in the form of images,from which the 2-D positions can be reconstructed.The background noise and cosmic ray images have been studied.The study shows that the cosmic ray detection efficiency can reach up to 11.4%,while the false accept rate is less than 1%.
A novel 2-D cosmic ray position detector has been built and studied. It is integrated from a CsI (Na) crystal pixel array, an optical fiber array, an image intensifier and an ICCD camera. 2-D positions of one cosmic ray track is determined by the location of a fired CsI (Na) pixel. The scintillation light of these 1.0 × 1.0 mm CsI (Na) pixels is delivered to the image intensifier through fibers. The light information is recorded in the ICCD camera in the form of images, from which the 2-D positions can be reconstructed. The background noise and cosmic ray images have been studied. The study shows that the cosmic ray detection efficiency can reach up to 11.4%, while the false accept rate is less than 1 %.