| 热中子数字成像系统的研制 |
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| 引用本文： | 唐彬,李西安,张松宝,夏明,项东,魏彪.热中子数字成像系统的研制[J].CT理论与应用研究,2004,13(4):20-25. |
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| 作者姓名： | 唐彬 李西安 张松宝 夏明 项东 魏彪 |
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| 作者单位： | 中国工程物理研究院,四川绵阳,621900;重庆大学光电系,重庆,400044 |
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| 基金项目： | "C T和三维成像荣誉奖杯"授予项目 |
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| 摘 要： | 成像系统是中子照相装置的关键组件之一.采用6LiFZnS(Ag)材料中子转换屏、长焦距、小视场专用微光镜头等光学组件,利用科学级CCD芯片、两级热电偶制冷技术、14bit模数转换技术研制了数字CCD摄像机,采用Visula C 和C Builder为工具,开发了双字节图像采集处理分析软件包,并设计了成像系统辐射防护装置,构成了热中子数字成像系统.实验证明:所采用的技术路线是合理的,达到了设计目的,成像质量可以与国外类似装置相媲美.
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| 关 键 词： | 中子照相 转换屏 电荷耦合器件 数字成像 |
| 文章编号： | 1004-4140(2004)04-0020-06 |
| 修稿时间： | 2004年8月18日 |
Thermal Neutron Digital Imaging System Based Cooled CCD |
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| TANG Bin,Li Xi-an,ZANG Song-bao,XIA Ming XIANG Dong,WEI Biao.Thermal Neutron Digital Imaging System Based Cooled CCD[J].Computerized Tomography Theory and Applications,2004,13(4):20-25. |
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| Authors: | TANG Bin Li Xi-an ZANG Song-bao XIA Ming XIANG Dong WEI Biao |
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| Institution: | TANG Bin1,Li Xi-an1,ZANG Song-bao1,XIA Ming1 XIANG Dong2,WEI Biao2 |
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| Abstract: | The imaging system is one of key assembles of neutron radiography facility. The collimator neutron flux is drawn from the horizontal channel by the use of SPRR-300 as a neutron resource. The convector made of 6LiFZnS(Ag) and the long focus professional twilight lens with the small field of view are used, and the digitalized CCD(Charge Coupled Device) camera is developed by the use of scientific grade CCD chip, the double thermocouple refrigeration and 14bit A/D convector. The image grabbing, processing and analyzing software of double bytes has been developed by the use of Visual C++ and C++ Builder, and the facility of anti-radiation for CCD is set up. The experiments show that the used technology is reasonable, and the destination of design is arrived at and the image quality can be matched with similar device at abroad. |
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| Keywords: | neutron radiography convector CCD digital imaging |
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