报告题目：3-Dimensional Position-Sensitive CdZnTe Gamma-Ray Imaging Spectrometers
报告人：何中 教授（Zhong He, The University of Michigan）
主持人：张双南 研究员
时间：6月18日（周二）上午10:00
地点：主楼C305会议室
报告简介：
This presentation introduces 3-dimensional position-sensitive room-temperature CdZnTe semiconductor gamma-ray imaging spectrometers pioneered by the University of Michigan. These detectors provide energy depositions and 3-dimensional positions of individual gamma interactions within each semiconductor crystal. The combined capabilities of high-resolution gamma-ray spectroscopy, real-time imaging, and room-temperature operation have attracted long and sustained support over the past two decades. The detector technology has been transformed from basic research to commercial markets in recent years. Applications include space exploration and medical imaging, such as range verification for proton cancer therapy.
Some latest technology development will be introduced, including new capabilities on thermal and fission neutron detection, high resolution gamma-ray imaging using time-encoded coded aperture technique, detecting and characterizing special nuclear materials behind shielding materials, and locate sources hundreds of meters away from one single observation.
报告人简介：
何中，1981年考入清华大学工程物理系近代物理专业，次年转入既时新组建的现代应用物理系。1986年获学士学位。之后去中国科学院高能物理研究所天体物理室。1988年末完成硕士学位并留任高能所。1989年10月至1991年春在英国南安普顿大学及法国巴黎Saclay核研究所访问工作。1991年夏开始在英国南安普顿大学物理系攻读博士学位。1993年底完成博士论文“gamma射线成像”。
1994年起就职于美国密西根大学（The University of Michigan）核工程系。2004年获密西根大学终身教授。科研方向主要集中于半导体gamma和中子成像探测器，应用領域包括医疗成像、工业应用、暗物质探测、天体物理、行星探测等。累计在国际期刊发表100多篇文章，直接累计主管科研超三千万美元。其中与美国太平洋西北国家实验室合作研发项目“三维CdZnTe gamma成像探测器”获美国2010年“TOP 100 R&D” 奖。直接毕业28个博士研究生。2011年和博士毕业生共创H3D Inc. 开发商业应用三维位置灵敏CdZnTe Gamma 射线高能量分辨率相机。
科研网页：http://cztlab.engin.umich.edu/
Zhong He received his Ph.D from Southampton University in U.K. in 1993. His research has covered all three major types of radiation sensors, semiconductor, scintillators, gas detectors, and associated low noise, charge sensing Application Specific Integrated Circuitries (ASICs). Since 1995, his research has focused mostly on the development of room-temperature semiconductor gamma-ray imaging spectrometers. He pioneered the 3-dimensional position-sensitive single-polarity charge sensing technology which has received increasing interests in medical imaging, and planetary sciences. He has graduated 28 Ph.Ds as committee chair and has published about 100 peer reviewed journal publications. H3D Inc., a spin-off company from his research group, has sold CdZnTe gamma-ray imagers to more than 60% of nuclear power plants in the United States and Canada, as well as in countries in Europe and Asia, to IAEA Safeguard Department and research groups on proton cancer therapy.
More detailed information on Zhong He’s research and teaching activity can be seen at their group website: http://cztlab.engin.umich.edu.
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