Physical design of multipurpose physics neutron diffractometer for the CSNS

Juping Xu; Longwei Mei; Wen Yin; Xunli Wang; Weiliang Cai; Zhiduo Li; Tao Bo; Huaican Chen; Baotian Wang; Yuanbo Chen

doi:10.1016/j.nima.2019.02.011

Physical design of multipurpose physics neutron diffractometer for the CSNS

Juping Xu, Longwei Mei, Wen Yin^*, Xunli Wang^*, Weiliang Cai, Zhiduo Li, Tao Bo, Huaican Chen, Baotian Wang, Yuanbo Chen

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

21 Citations (Scopus)

Abstract

The Multipurpose Physics neutron diffractometer (MP) will be built at the China Spallation Neutron Source (CSNS) in the coming years. It is a time of flight diffractometer dedicated to the study of complex crystalline materials through the total scattering or pair distribution function (PDF) technique. The MP diffractometer will be able to determine the PDF from the atomic to the nanometer scale. We present a validation of the main physical parameters of the MP diffractometer through Monte Carlo simulation. In particular the moderator choice, guide system and placement of the chopper system is investigated. The best momentum transfer resolution δQ/Q is reached in backscattering and is expected to be in the order of 0.2 %, the neutron flux at the sample is of the order of 10⁷ n/s/cm² and the momentum transfer range in the order of 0.08–100 Å⁻¹.

Original language	English
Pages (from-to)	161-168
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	927
Online published	14 Feb 2019
DOIs	https://doi.org/10.1016/j.nima.2019.02.011
Publication status	Published - 21 May 2019

Research Keywords

McStas
Neutron diffraction
Neutron optics
Total-scattering instrumentation

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title = "Physical design of multipurpose physics neutron diffractometer for the CSNS",

abstract = "The Multipurpose Physics neutron diffractometer (MP) will be built at the China Spallation Neutron Source (CSNS) in the coming years. It is a time of flight diffractometer dedicated to the study of complex crystalline materials through the total scattering or pair distribution function (PDF) technique. The MP diffractometer will be able to determine the PDF from the atomic to the nanometer scale. We present a validation of the main physical parameters of the MP diffractometer through Monte Carlo simulation. In particular the moderator choice, guide system and placement of the chopper system is investigated. The best momentum transfer resolution δQ/Q is reached in backscattering and is expected to be in the order of 0.2 %, the neutron flux at the sample is of the order of 107 n/s/cm2 and the momentum transfer range in the order of 0.08–100 {\AA}−1.",

keywords = "McStas, Neutron diffraction, Neutron optics, Total-scattering instrumentation",

author = "Juping Xu and Longwei Mei and Wen Yin and Xunli Wang and Weiliang Cai and Zhiduo Li and Tao Bo and Huaican Chen and Baotian Wang and Yuanbo Chen",

year = "2019",

month = may,

day = "21",

doi = "10.1016/j.nima.2019.02.011",

language = "English",

volume = "927",

pages = "161--168",

journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",

issn = "0168-9002",

publisher = "Elsevier B.V.",

}

Physical design of multipurpose physics neutron diffractometer for the CSNS. / Xu, Juping; Mei, Longwei; Yin, Wen et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 927, 21.05.2019, p. 161-168.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

TY - JOUR

T1 - Physical design of multipurpose physics neutron diffractometer for the CSNS

AU - Xu, Juping

AU - Mei, Longwei

AU - Yin, Wen

AU - Wang, Xunli

AU - Cai, Weiliang

AU - Li, Zhiduo

AU - Bo, Tao

AU - Chen, Huaican

AU - Wang, Baotian

AU - Chen, Yuanbo

PY - 2019/5/21

Y1 - 2019/5/21

N2 - The Multipurpose Physics neutron diffractometer (MP) will be built at the China Spallation Neutron Source (CSNS) in the coming years. It is a time of flight diffractometer dedicated to the study of complex crystalline materials through the total scattering or pair distribution function (PDF) technique. The MP diffractometer will be able to determine the PDF from the atomic to the nanometer scale. We present a validation of the main physical parameters of the MP diffractometer through Monte Carlo simulation. In particular the moderator choice, guide system and placement of the chopper system is investigated. The best momentum transfer resolution δQ/Q is reached in backscattering and is expected to be in the order of 0.2 %, the neutron flux at the sample is of the order of 107 n/s/cm2 and the momentum transfer range in the order of 0.08–100 Å−1.

AB - The Multipurpose Physics neutron diffractometer (MP) will be built at the China Spallation Neutron Source (CSNS) in the coming years. It is a time of flight diffractometer dedicated to the study of complex crystalline materials through the total scattering or pair distribution function (PDF) technique. The MP diffractometer will be able to determine the PDF from the atomic to the nanometer scale. We present a validation of the main physical parameters of the MP diffractometer through Monte Carlo simulation. In particular the moderator choice, guide system and placement of the chopper system is investigated. The best momentum transfer resolution δQ/Q is reached in backscattering and is expected to be in the order of 0.2 %, the neutron flux at the sample is of the order of 107 n/s/cm2 and the momentum transfer range in the order of 0.08–100 Å−1.

KW - McStas

KW - Neutron diffraction

KW - Neutron optics

KW - Total-scattering instrumentation

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DO - 10.1016/j.nima.2019.02.011

M3 - RGC 21 - Publication in refereed journal

SN - 0168-9002

VL - 927

SP - 161

EP - 168

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

ER -

Physical design of multipurpose physics neutron diffractometer for the CSNS

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