Concept for a time-of-flight Small Angle Neutron Scattering instrument at the European Spallation Source
Concept for a time-of-flight Small Angle Neutron Scattering instrument at the European Spallation Source
复制标题
欧洲散裂源飞行时间小角中子散射仪器的概念
DOI：
10.1016/j.nima.2014.04.024
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发表时间：
2014
影响因子：
1.4
通讯作者：
H. Frielinghaus
中科院分区：
文献类型：
--
作者：
S. Jaksch;D. Martín;A. Ostermann;J. Jestin;S. D. Pinto;W. Bouwman;J. Uher;R. Engels;G. Kemmerling;R. Hanslik;H. Frielinghaus
本文介绍了一种新的小角中子散射仪。脉冲源需要在探测器处对收集的中子进行飞行时间分析。最佳的仪器长度被发现是相当大的，这允许一个偏振器和一个通用的准直。偏振器允许研究磁性样品和非相干背景扣除。宽准直将承载VSANS和SESANS选项，分别将仪器的分辨率提高到µm和数十µm。两个1 m2面积的探测器将同时覆盖一个大的立体角。与基于反应堆的最新仪器相比，这一新仪器的预期增益将在20至36之间，这取决于评估标准。这将为快速动力学、弱散射样品和多维对比度变化研究开辟新的前景。
A new Small Angle Neutron Scattering instrument is proposed for the European Spallation Source. The pulsed source requires a time-of-flight analysis of the gathered neutrons at the detector. The optimal instrument length is found to be rather large, which allows for a polarizer and a versatile collimation. The polarizer allows for studying magnetic samples and incoherent background subtraction. The wide collimation will host VSANS and SESANS options that increase the resolution of the instrument towards µm and tens of µm, respectively. Two 1 m2area detectors will cover a large solid angle simultaneously. The expected gains for this new instrument will lie in the range between 20 and 36, depending on the assessment criteria, when compared to up-to-date reactor based instruments. This will open new perspectives for fast kinetics, weakly scattering samples, and multi-dimensional contrast variation studies.
影响因子：
56.9
作者：
Romming, Niklas;Hanneken, Christian;Wiesendanger, Roland
通讯作者：
Wiesendanger, Roland