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作 者:TANG Shibiao MA Qingli YIN Zejie HUANG Huan
机构地区:[1]Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China [2]Electronics Department, Electronic Engineering Institute, Hefei 230038, China
出 处:《Nuclear Science and Techniques》2007年第3期172-175,共4页核技术(英文)
基 金:Supported by National Natural Science Foundation (No.60602065);Innovation Funds of USTC for Graduate Student (No.KD2006009)
摘 要:In this work, characteristics of using PSFs (plastic scintillation fibers) coupled with CCD (charge-coupled devices ) to build area detectors for high energy X-ray imaging are studied with a Monte Carlo simulation, which cover an energy range of a few hundred keV to about 20 MeV. It was found that the efficiency of PSF in detecting X-ray with energy above a few hundred keV is low. We can use large incident flux to increase the output signal to noise ratio (SNR). The performance can also be improved by coating PSF with X-ray absorption layers and the MTF of the system is presented. By optimizing the absorption layer thickness, the crosstalk of the area detector built with PSF decreases.In this work, characteristics of using PSFs (plastic scintillation fibers) coupled with CCD (charge-coupled devices ) to build area detectors for high energy X-ray imaging are studied with a Monte Carlo simulation, which cover an energy range of a few hundred keV to about 20 MeV. It was found that the efficiency of PSF in detecting X-ray with energy above a few hundred keV is low. We can use large incident flux to increase the output signal to noise ratio (SNR). The performance can also be improved by coating PSF with X-ray absorption layers and the MTF of the system is presented. By optimizing the absorption layer thickness, the crosstalk of the area detector built with PSF decreases.
分 类 号:TN25[电子电信—物理电子学] O571.33[理学—粒子物理与原子核物理]
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