The small-angle neutron scattering instrument D33 at the Institut Laue-Langevin
The small-angle neutron scattering instrument D33 at the Institut Laue-Langevin
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DOI：
10.1107/s1600576715021792
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发表时间：
2016-02-01
影响因子：
6.1
通讯作者：
Cubitt, R.
中科院分区：
文献类型：
--
作者：
Dewhurst, C. D.;Grillo, I.;Cubitt, R.
lue - langevin研究所的D33小角中子散射（SANS）仪器是lue - langevin研究所建造的最新的SANS仪器。在2005年开始的一个项目中，持续了七年，已经开发了概念，并设计，制造和安装了仪器。D33在2012年下半年投入使用中子，并在2013年完全进入ILL用户计划。科学案例要求D33应提供广泛的测量散射矢量幅度q的动态范围，仪器分辨率的灵活性，并提供极化中子和3 He自旋分析，以促进和扩展磁学研究。在单色模式下，速度选择器和灵活的准直孔径系统定义了中子束。双斩波系统支持飞行时间（TOF）操作模式，允许增强动态q范围(q（max)/q(min)）和灵活的波长分辨率。两个大型多管探测器进一步扩展了动态q范围，在单色模式下给出类似或等于25的q(max)/q(min)，在TOF模式下给出非常大的q(max)/q(min) bbb1000。样品区配置大而灵活，可容纳复杂而笨重的样品环境，而D33的位置则允许样品位置有高磁场。该仪器是通用的，其性能可与D22相媲美，并且非常适合于科学学科中的SANS研究，如生物学和软物质的溶液散射以及物理学，材料科学和磁学的研究。本文提供了D33的详细技术描述及其各部件的性能和特性，作为仪器用户的技术参考。
The D33 small-angle neutron scattering (SANS) instrument at the Institut Laue-Langevin (ILL) is the most recent SANS instrument to be built at the ILL. In a project beginning in 2005 and lasting seven years, the concept has been developed, and the instrument designed, manufactured and installed. D33 was commissioned with neutrons during the second half of 2012, fully entering the ILL user programme in 2013. The scientific case required that D33 should provide a wide dynamic range of measured scattering vector magnitude q, flexibility with regard to the instrument resolution, and the provision of polarized neutrons and 3 He spin analysis to facilitate and expand studies in magnetism. In monochromatic mode, a velocity selector and a flexible system of inter-collimation apertures define the neutron beam. A double-chopper system enables a time-of-flight (TOF) mode of operation, allowing an enhanced dynamic q range (q(max)/q(min)) and a flexible wavelength resolution. Two large multitube detectors extend the dynamic q range further, giving q(max)/q(min) similar or equal to 25 in monochromatic mode and a very large q(max)/q(min) > 1000 in TOF mode. The sample zone is large and flexible in configuration, accommodating complex and bulky sample environments, while the position of D33 is such as to allow high magnetic fields at the sample position. The instrument is of general purpose with a performance rivalling that of D22, and is well adapted for SANS studies in scientific disciplines as diverse as solution scattering in biology and soft matter and studies of physics, materials science and magnetism. This article provides a detailed technical description of D33 and its performance and characterization of the individual components, and serves as a technical reference for users of the instrument.