Conceptual design of the grazing-incidence focusing small-angle neutron scattering (gif-SANS) instrument at CPHS

Abstract

Developing small-angle neutron scattering techniques at compact accelerator-driven neutron sources (CANS) is of great importance for expanding the user community and advancing CANS capability. At the Compact Pulsed Hadron Source (CPHS) at Tsinghua University, neutron-focusing mirrors are under intensive research to address the challenge. A grazing-incidence focusing SANS (gif-SANS) project is initialized. It employs a nested supermirror assembly with a large collecting area to achieve $⩾ 10^{5}$ n/s neutron intensity at $Q_{min} ⩽ 0.007 Å^{- 1}$ . It will equip two detectors, one being a ³He detector for normal Q-range measurements, and the other being a high-resolution detector for extending the $Q_{min}$ down to $10^{- 3} Å^{- 1}$ . In this work, we present the conceptual design of the gif-SANS at CPHS. Such a scheme is conducive to enable high-performance SANS measurements at CANS.

Keywords

SANS neutron-focusing mirrors compact neutron source

Get full access to this article

View all access options for this article.

References

I.S.

Anderson,

Andreani,

J.M.

Carpenter,

Festa,

Gorini,

C.K.

Loong and

Senesi, Research opportunities with compact accelerator-driven neutron sources, Physics Reports654 (2016), 1–58. doi:10.1016/j.physrep.2016.07.007.

Otake, RIKEN accelerator-driven compact neutron systems, RANS project and their capabilities, Neutron News31 (2020), 32–36. doi:10.1080/10448632.2020.1819134.

Ott,

Menelle and

Alba-Simionesco, The SONATE Project, a French, CANS for Materials Sciences Research, EPJ Web of Conferences, Vol. 231, 2020.

Brückel,

Gutberletet al., Conceptual Design Report Jülich High Brilliance Neutron Source (HBS), 2020, http://hdl.handle.net/2128/25874.

Radulescu,

Kentzinger,

Stellbrink,

Dohmen,

Alefeld,

Rücker,

Heiderich,

Schwahn,

Brückel and

Richter, KWS-3: The new (very) small-angle neutron scattering instrument based on focusing-mirror optics, Neutron News16 (2005), 18–21. doi:10.1080/10448630500454270.

Khaykovich,

M.V.

Gubarev,

Bagdasarova,

B.D.

Ramsey and

D.E.

Moncton, From x-ray telescopes to neutron scattering: Using axisymmetric mirrors to focus a neutron beam, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment631 (2011), 98–104. doi:10.1016/j.nima.2010.11.110.

C.J.

Glinka,

J.M.

Rowe and

J.G.

Larock, The small-angle neutron-scattering spectrometer at the national-bureau-of-standards, Journal of Applied Crystallography19 (1986), 427–439. doi:10.1107/S0021889886088994.

Wang,

Wu,

Chen,

Sun and

Wang, Study of a multi-pinhole collimation system based small-angle neutron scattering instrument at the compact pulsed hadron source, Journal of Applied Crystallography51 (2018), 1605–1615. doi:10.1107/S1600576718013730.

Funama,

Adachi,

Tasaki and

Abe, Development of new small-angle neutron scattering geometry with ring-shaped collimated beam for compact neutron source, EPJ Web of Conferences231 (2020).

10.

Wang,

Xing,

Zheng,

Yang,

Gong,

Xiao,

Wu,

Wang,

Fang,

Jiang and

Guan, Status report on accelerator and neutron activities of CPHS at Tsinghua University, Journal of Physics: Conference Series1021 (2018).

11.

Wu,

Wang,

Zhang,

Mo,

Bai,

Song,

Zhang,

Wang,

D.S.

Hussey,

Liu,

Wang and

Wang, Demonstration of small-angle neutron scattering measurements with a nested neutron-focusing supermirror assembly, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment972 (2020).

12.

Wu,

Yang,

D.S.

Hussey,

Wang,

Song,

Zhang,

Wang,

Wang and

Wang, Study of a nested neutron-focusing supermirror system for small-angle neutron scattering, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment940 (2019), 380–386. doi:10.1016/j.nima.2019.06.054.

13.

J.A.

Howell and

Horowitz, Ellipsoidal and bent cylindrical condensing mirrors for synchrotron radiation, Nuclear Instruments and Methods125 (1975), 225–230. doi:10.1016/0029-554X(75)90271-2.

14.

Y.-M.

Wang,

Tian,

Y.-G.

Yang,

Liu,

J.-S.

Pan,

X.-W.

Wang and

Zhang, Detection efficiency evaluation for a large area neutron sensitive microchannel plate detector, Chinese Physics C40 (2016).