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论文成果
PKUNIFTY: A neutron imaging facility based on an RFQ accelerator. Nuclear Instruments and Methods in Physics Research A651 (2011) 62–66.
发布时间：2024-09-14点击次数：
影响因子：
1.4
DOI码：
10.1016/j.nima.2011.02.011
发表刊物：
Nuclear Instruments and Methods in Physics Research A
关键字：
Thermal neutron radiography
RFQ accelerator
Moderator
Collimator
Imaging system
摘要：
A neutron imaging facility, PKUNIFTY, based on a radio frequency quadrupole (RFQ) accelerator-driven compact neutron source, presently under construction at the Peking University, is described. It consists of a deuteron linear accelerator, a neutron target–moderator–reflector assembly, and a thermal neutron imaging system. Neutrons are generated via the deuteron–beryllium reaction with an expected fast-neutron yield of 3×1012 n/s. The thermal neutron flux on the imaging plane is 5×105 n/cm2/s at a nominal L/D ratio of 50, and the L/D ratio can be selectable over a range of 25–200. The corresponding n/γ ratio is close to or higher than 1×1010 n/cm2/Sv. The field of view is 20 cm×20 cm at 2 m downstream of the collimator entrance aperture where the thermal neutron flux uniformity is better than 7%. The effective Cd ratio can be tuned by using a light chopper and neutron time-of-flight technique without excessive sacrifice of the thermal neutron flux.
论文类型：
期刊论文
文献类型：
J
卷号：
651
期号：
1
页面范围：
62-66
是否译文：
否
发表时间：
2011-09-21
收录刊物：
SCI