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The Back-n white neutron beam line, which uses back-streaming white neutrons from the spallation target of the China Spallation Neutron Source, is used for nuclear data measurements. A Micromegas-based neutron detector with two variants was…

The back-streaming white neutron source (Back-n) is a comprehensive neutron experimental platform for nuclear data measurement, nuclear astrophysics, neutron irradiation, detector calibration, etc. In order to meet a variety of experimental…

Instrumentation and Detectors · Physics 2021-08-17 Xiaolong Gaoa , Hantao Jing , Chungui Duan , Binbin Tian , Yang Li , Xiaoyun Yang , Jilei Sun , Weiling Huang

China Spallation Neutron Source (CSNS) will start commissioning in early 2018. The neutron spectra from the tungsten target bombarding by 1.6 GeV proton beam are very wide, namely white neutron spectra. Two white neutron beams schemed by…

Instrumentation and Detectors · Physics 2018-08-15 W. J. Ni , H. T. Jing , L. Y. Zhang , L Ou

The power of the proton beam of a high-power spallation neutron source generally ranges from 100 kW to several MW. The distribution of the power density of the beam on the target is critical for the stable operation of the high-power…

Accelerator Physics · Physics 2021-08-30 Yang Xiaoyun , Jing Hantao , Tian Binbin , Ou Li , Sun Yankun , Gao Xiaolong

Chinese Spallation Neutron Source (CSNS), one project of the 12th five-year-plan scheme of China, is under construction in Guangdong province. Three neutron spectrometers will be installed at the first phase of the project, where…

Instrumentation and Detectors · Physics 2015-05-30 Li-Chao Tian , Bin Tang , Xiao-Hu Wang , Rong-Guang Liu , Jian Zhang , Yuan-Bo Chen , Zhi-Jia Sun , Hong Xu , Gui-An Yang , Qiang Zhang

The white neutron beamline at the China Spallation Neutron Source will be used mainly for nuclear data measurements. It will be characterized by high flux and broad energy spectra. To exploit the beamline as a neutron imaging source, we…

Instrumentation and Detectors · Physics 2018-05-22 Zhixin Tan , Jingyu Tang , Hantao Jing , Ruirui Fan , Qiang Li , Changjun Ning , Jie Bao , Xichao Ruan , Guangyuan Luan , Changqin Feng , Xianpeng Zhang

A post-acceleration system based on the accelerators at CSNS (China Spallation Neutron Source) is proposed to build a super-beam facility for neutrino physics. Two post-acceleration schemes, one using superconducting dipole magnets in the…

Accelerator Physics · Physics 2015-06-12 Yang Wu , Jingyu Tang

the main physics goal for Back-n white neutron facility at China Spallation Neutron Source (CSNS) is to measure nuclear data. The energy of neutrons is one of the most important parameters for measuring nuclear data. Method of time of…

The Cold-Neutron Inelastic Spectrometer (CNIS) is a direct-geometry, time-of-flight instrument designed for China Spallation Neutron Source (CSNS) and optimized to probe low-energy lattice and magnetic excitations. The instrument integrates…

Applied Physics · Physics 2026-05-12 Qian Zhao , Xiaowen Zhang , Songwen Xiao , Wei Luo , Zecong Qin , Zhuang Xu , Yu Feng , Xin Tong

The neutron capture yield of 165Ho have been measured at the Back-streaming White neutron beam line (Back-n) of the China Spallation Neutron Source (CSNS) using a 4{\pi} BaF2 Gamma Total Absorption Facility (GTAF). The resonance shapes in…

China Spallation Neutron Source (CSNS) is the first high-performance pulsed neutron source in China, which will meet the increasing fundamental research and technique applications demands domestically and overseas. A new distributed data…

Data Analysis, Statistics and Probability · Physics 2016-08-17 H. L. Tian , J. R. Zhang , L. L. Yan , M. Tang , L. Hu , D. X. Zhao , Y. X. Qiu , H. Y. Zhang , J. Zhuang , R. Du

The back-streaming neutrons from the spallation target at CSNS are very intense, and can pose serious damage problems for the devices in the accelerator-target interface region. To tackle the problems, a possible scheme for this region was…

Accelerator Physics · Physics 2013-06-04 Jing Han-Tao , Tang Jing-Yu , Yang Zheng

The wavelengths and energies of thermal and cold neutrons are ideally matched to the length and energy scales in the materials that underpin technologies of the present and future: ranging from semiconductors to magnetic devices, composites…

Accelerator Physics · Physics 2007-05-23 T. E. Mason , T. A. Gabriel , R. K. Crawford , K. W. Herwig , F. Klose , J. F. Ankner

In Chinese Spallation Neutron Source (CSNS), proton beam is used to hit metal tungsten target, and then high flux neutrons are generated for experiments on instruments. For neutron flux spectrum correction, boron-coated GEM, lithium glass…

Instrumentation and Detectors · Physics 2018-06-22 Jian Zhuang , Ke Zhou , Lijiang Liao , Lei Hu , Jiajie Li , Yongxiang Qiu

The China Spallation Neutron Source (CSNS) operates in pulsed mode and has a high neutron flux. This provides opportunities for energy resolved neutron imaging by using the TOF (Time Of Flight) approach. An Energy resolved neutron imaging…

The neutron background spectrum from thermal neutron to 20 MeV fast neutron was measured at the first experimental hall of China Jinping underground laboratory with a Bonner multi-sphere spectrometer. The measurement system was validated by…

Instrumentation and Detectors · Physics 2017-04-26 Qingdong Hu , Hao Ma , Zhi Zeng , Jianping Cheng , Yunhua Chen , Shenming He , Junli Li , Manbin Shen , Shiyong Wu , Qian Yue , Jianfeng Yue , Hui Zhang

A new muon source has been proposed to conduct muon spin rotation/relaxation/resonance ($\mu$SR) measurements at China Spallation Neutron Source (CSNS). Only 1 Hz of the CSNS proton beams (25 Hz in total) will be allocated for muon…

Instrumentation and Detectors · Physics 2022-12-07 Jingyu Dong , Ziwen Pan , Tianyi Yang , Zebin Lin , Zhe Wang , Zhengyang He , Zhe Chen , Hantao Jing , Jingyu Tang , Jiandang Liu , Hongjun Zhang , Bangjiao Ye

Polarized eV neutrons can address interesting scientific questions in nuclear physics, particle physics, and astrophysics/cosmology. We present the first experiment to polarize the neutrons on the Back-n beamline at the Chinese Spallation…

Nuclear Experiment · Physics 2025-03-04 Mofan Zhang , Zhou Yang , Junpei Zhang , Chuyi Huang , Tianhao Wang , Yonghao Chen , Ruirui Fan , W. Michael Snow

The stellar (n, $\gamma$) cross section data for the mass numbers around A $\approx$ 160 are of key importance to nucleosynthesis in the main component of the slow neutron capture process, which occur in the thermally pulsing asymptotic…

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