Chaoqiang Huang

China Academy of Engineering Physics

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Guangai Sun

China Academy of Engineering Physics

Bo Chen

Civil Aviation University of China

Xinxi Li

Guangdong University of Technology

Guanyun Yan

China Academy of Engineering Physics

Yuanhua Xia

China Academy of Engineering Physics

Song Jianming

China Academy of Engineering Physics

Beibei Pang

National Synchrotron Radiation Laboratory

Hongjia Li

Sichuan University

Sun Guang-Ai

Quanta Computer (China)

Jian Gong

National Center for Nanoscience and Technology

Cooperative Institutions

Chinese Academy of Sciences

China Academy of Engineering Physics

University of Chinese Academy of Sciences

Institute of High Energy Physics

University of Science and Technology of China

China Spallation Neutron Source

Chinese Academy of Engineering

Tsinghua University

Shanghai Jiao Tong University

Sichuan University

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放電におけるジョブの再利用に基づくスケジューリングプールスケジューリングアルゴリズムの設計と実装【Powered by NICT】

IEEE Conference Proceedings (2016)

Jianchao Tang Shuqiang Yang Chaoqiang Huang Yan Zhou

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A novel ceramic GEM used for neutron detection

Nuclear Engineering and Technology (2019)

Jianrong Zhou Xiaojuan Zhou Jianjin Zhou X. S. Jiang Jianqing Yang

A novel ceramic Gas Electron Multiplier (GEM) has been developed to meet the demand of high counting rate for the neutron detection which is an alternative to 3He-based detector at China Spallation Neutron Source (CSNS). An experiment was performed to measure the neutron transmittance of ceramic-GEM and FR4-GEM at the small angle neutron scattering (SANS) instrument. The result showed the ceramic-GEM has higher transmittance and less self-scattering especially for cold neutrons. One single ceramic GEM could give a gain of 102-104 in the mixture gas of Ar and CO2 (90%:10%) and its energy resolution was about 27.7% by using 55Fe X ray of 5.9 keV. A prototype has been developed in order to investigate the performances of the ceramic GEM-based neutron detector. Several neutron beam tests, including detection efficiency, spatial resolution, two-dimensional imaging, and wavelength spectrum, were carried out at CSNS and China Mianyang Research Reactor (CMRR). The results show that the ceramic GEM-based neutron detector is a good candidate to measure the high intensity neutrons.

Neutron Detection

Gas electron multiplier

Spallation Neutron Source

Neutron Imaging

Neutron radiation

10.1016/j.net.2019.11.021

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Experimental research on a THGEM-based thermal neutron detector

Chinese Physics C (2015)

Lei Yang Jianrong Zhou Zhijia Sun Ying Zhang Chaoqiang Huang

A new thermal neutron detector with the domestically produced THGEM (THick Gas Electron Multiplier) was developed as an alternative to 3He to meet the needs of the next generation of neutron facilities. One type of Au-coated THGEM was designed specifically for the neutron detection. A detector prototype had been developed and the preliminary experimental tests were presented, including the performance of the Au-coated THGEM working in the Ar/CO2 gas mixtures and the neutron imaging test with 252CF source, which would provide the reference of experimental data for the research in future.

Neutron Detection

10.1088/1674-1137/39/5/056002

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Simulation input spectrum of triple-axis spectrometer and parameter optimization

Hedianzixue yu tance jishu (2008)

Song Jianming Chaoqiang Huang Yang Jian Bo Chen

According to the layout and parameters of Cold Neutron Source (CNS) and neutron guides (NG),the parameters of input neutron-beam such as flux,divergence and homogeneity,are calculated by Monte-Carlo simulation at the exit of NG where a neutron triple-axis spectrometer will be built.The results showed the distance(L)between CNS and the entrance of NG should not be less than 0.1m.mo- reover,when the L equal 0.5m the flux increases to the maximal 3.96 10~8cm~(-2) s~(-1).The flux and beam divergence increase slightly as supermirror factor m increasing from 1.5 to 3.0,the vertical maximal di- vergence and flux increase 87.7% and 25% respectively.The vertical and horizontal divergence can be described by a Gaussian function.The horizontal and vertical maximal divergence are 0.85°and 0.81°when m is 1.5,L is 2m,with the flux up to 2.86×10~8 cm~(-2)s~(-1).We give the optimum neutron guides pa- rameter for the TAS.

Divergence (linguistics)

Beam divergence

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Calibration of two-dimensional position sensitive detector of triple-axis neutron spectrometer

He Jishu (2013)

Chaoqiang Huang Song Jianming Bo Chen Liusi Sheng

Position (finance)

Neutron Detection

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The analyses of scattering vector resolution of constant wavelength and time of flight mode

Hedianzixue yu tance jishu (2007)

Chaoqiang Huang Bo Chen

The scattering vector q resolution of neutron scattering is discussed and the resolution curves in constant wavelength(CW) and time of flight(TOF) mode are given,based on the widely used the angel resolution,beam divergence and the wavelength resolution.The advantages and disadvantages between the two modes are compared.It shows that the resolution of TOF is better for low q range(0.4nm~(-1)) scattering experiment,and that of CW mode is better for high q range,contrastively.

Time-of-Flight

Constant (computer programming)

Mode (computer interface)

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Technology of Data Analysis for Neutron Reflection

China Nuclear Science and Technology Report (2007)

Bo Chen Chaoqiang Huang Xinxi Li

Based on the neutron reflection (NR) theories,it is introduced that Fres- nel reflection,reflection theories of monolayer and multilayer,the description of the layer structures and algorithm of reflectivity of films.Analysis of NR ex- perimental data is discussed.Data analysis packages Parratt32 and NOD,as well as their characteristics,are presented.Aiming at analysis of reflectivity of CoFeV monolayer,it is also given those practical examples of data analysis for neutron reflection.The examples show that the potential of layer material is re- lated with critical point of total reflection,roughness of interfaces decreases the partial reflection and the thickness of layers flexes fringe spacing on the reflec- tivity.

Reflection

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Evolution and change of He bubbles in He-containing Ti films upon thermal treatment studied by small-angle X-ray scattering and transmission electron microscopy

Thin Solid Films (2014)

Guangai Sun Erdong Wu Chaoqiang Huang Chun Cheng Guanyun Yan

Small-angle X-ray scattering

Ostwald ripening

10.1016/j.tsf.2014.03.005

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Citations (2)