Planning of Energy-Selective Neutron Imaging Instrument at CSNS and its Application Prospect in Materials Science
| Autor: | Lun Hua He, Fang Wei Wang, Jie Chen, Jun Rong Zhang |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
business.industry Mechanical Engineering Neutron imaging Neutron diffraction 0211 other engineering and technologies Phase-contrast imaging 02 engineering and technology Neutron radiation 021001 nanoscience & nanotechnology Condensed Matter Physics Optics Mechanics of Materials 021105 building & construction Neutron detection Neutron source General Materials Science Neutron Nuclear Experiment 0210 nano-technology business Spallation Neutron Source |
| Zdroj: | Materials Science Forum. 850:161-166 |
| ISSN: | 1662-9752 |
| Popis: | In order to serve a growing multidisciplinary community beyond the traditional scattering areas, an energy-selective neutron imaging instrument is proposed in the China Spallation Neutron Source (CSNS). The instrument is planned to provide analytical techniques such as state-of-the-art energy-selective neutron imaging, neutron radiography, tomography, polarized neutron imaging, neutron phase contrast imaging, and combined neutron diffraction. Coupled hydrogen moderator (CHM) will be chosen as its neutron source. A flight path of 40 m from moderator to sample will provide good energy resolution better than ~0.4%. Super mirror neutron guide will be used to transport neutron from moderator to aperture selector. Aperture selector with 5 apertures and a set of slits will be used to adjust the neutron beam for different modalities. The best spatial resolution will be 50 μm. Different types of detectors will be needed including high spatial resolution CCD camera, TOF detector, and scintillator detector. With a main emphasis on advanced materials and engineering studies, the instrument will enable 2D/3D mapping of the microstructure, chemical composition, and crystallographic structure (grain size, stress and strain, phase position, texture, and so on). It will also support a broad range of studies in archaeology, biology, biomedicine, geosciences, building technology, manufacturing processes, forensic, and homeland security applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|