A New Operating Neutron Scattering Facility CMRR in China

Review of Scientific Instruments

et al. 2020

Self Cite

Section: Review Of Scientific Instrumentsmentioning

confidence: 99%

Cyclic tensile machine with wide speed range for in situ neutron/X-ray scattering study on elastomers

Tian

Review of Scientific Instruments

et al. 2020

Self Cite

“…The size of incident neutron beam at sample position is about 2 × 3 cm 2 . [31] The loading force is generated by the 2000 kN Paris-Edinburgh press. [32] An iron cylinder (99.99%, Alfa Aesar, US) with a size of Φ2 × 2 mm was used as a sample.…”

Section: Pressure Calibration Experimentsmentioning

confidence: 99%

The design of 2/8-type high-pressure cell applied to in situ neutron diffraction*

Xiang

et al. 2019

Chinese Phys. B

The DIA-type Kawai cell possesses a larger volume and a quasi-hydrostatic pressure environment and has been widely used in materials’ synthesis and x-ray diffraction experiments. However, few high-pressure in situ neutron diffraction experiments were performed in the DIA-type Kawai cell because there is no wide window for neutron diffraction and the second-stage anvils and guild block material attenuates the neutron signal significantly. In this work, we tentatively modified the normal DIA-type Kawai cell (MA 2-6-8) into a MA 2-8 mode by removing the six first-stage tungsten carbide anvils. As a consequence, the eight tungsten carbide anvils (Kawai cell) are directly driven by the guide blocks. The results of ex situ and in situ pressure calibration show that the cell pressure can reach 5 GPa with small truncation edge lengths (TEL) of 3 mm even at the load of 300 kN. It suggests that this MA 2-8 cell may open a new way for high-pressure and high-temperature in situ neutron diffraction.

“…Nowadays, eight spectrometers have been completed and come into service in the CMRR-based neutron center. 1 High resolution neutron diffractometer (HRND) Xuanwu, 2 residual stress neutron diffractometer (RSND) Qilin, 3 thermal neutron radiography station (TNR), 4 and high-pressure neutron diffractometer (HPND) Fenghuang, 5 are installed in the reactor hall. Small-angle neutron scattering (SANS) Suanni, [6][7][8] time-of-flight and polarized neutron reflectometer (TPNR) Diting, 9 cold neutron triple-axis spectrometer (CTAS) Kunpeng, 10 and cold neutron radiography facility (CNRF) 11 are installed in the cold neutron scattering hall.…”

Section: Introductionmentioning

confidence: 99%

MyNeutronDAQ: A general program for data acquisition of neutron scattering spectrometers at China Mianyang Research Reactor and on‐line data‐analysis

Pang

et al. 2020

Softw Pract Exp

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MyNeutronDAQ, a graphical user interface (GUI) program for data acquisition of neutron scattering spectrometers at China Mianyang Research Reactor (CMRR) and on‐line data‐analysis has been developed. The program is written in Microsoft Visual C++, which runs under Windows operating systems. Based on the characters of the hardware connection and time‐to‐digital converter (TDC) systems of the spectrometers (taking the time‐of‐flight and polarized neutron reflectometer [TPNR] Diting as the example), a valid event identification and screening protocol is embedded into the program. Moreover, the program design and key features of MyNeutronDAQ such as visualization interface, optional output data format, batch mode, and functions of user‐friendly on‐line analysis, are presented. Taking the program specifically for small‐angle neutron scattering (SANS) Suanni as the example, specific applications of the MyNeutronDAQ are further presented.