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中文摘要：
结合小尺寸CAZnTe半导体探测器，设计了结构紧凑的低噪声多相流γ射线过程成像探测系统，系统采用五个能量为59．5keV的^241A。源均布在PVC管空间的结构，数据采集系统采用基于FPGA技术，将采集数据传给上位机进行处理和图像重建。测试结果显示，多相流过程成像系统每个通道的总噪声大约为8．9keVFWHM，计数能力约为90kcps。
英文摘要：
A compact low noise multi-flow detector system for gamma-ray tomograpy matched to small size CAZnTe detectors has been developed, the system comprises five ^241Am gamma-ray sources at a principal energy of 59. 5keV, mounted around a PVC pipe structure. , the DAQ system based FPGA technique transmits the data acquired by linear array to up-PC, and then the data can be processed to reconstruct the image of the measurement volume, the test result shows the each channel＇s total noise of multi-flow tomography system is about 8.9keV FWHM ,and its count rate capability, is about 90kcps.
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