Design and implementation of a sample environment for in situ moisture-dependent neutron dark-field imaging experiments

IF 1.5 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment Pub Date : 2024-11-05 DOI:10.1016/j.nima.2024.170024

Elisabetta Nocerino , Tamara Vonäsch , Markus Strobl , Anders Kaestner

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Abstract

We present the design and construction of a custom neutron-transparent sample environment for in situ moisture-dependent neutron dark-field imaging (NDFI) experiments for the imaging facilities at the Paul Scherrer Institute (PSI), Villigen, Switzerland. This simple setup, combined with a moisture generator, features a continuous flow system to ensure a constant homogeneous flow of humid air to manipulate the sample’s moisture conditions at room temperature. To facilitate neutron dark-field imaging measurements, the chamber has a slim design to maximize the sample-detector distance scanning range. The chamber can maintain static or dynamic relative humidity conditions, allowing for humidity cycles. Beyond moisture-dependent studies, the system’s versatility allows its utilization in any type of gas stream-dependent study. This technical note details the engineering considerations, construction process, and validation of this sample environment.

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原位湿度中子暗场成像实验样品环境的设计与实施

我们介绍了为瑞士维利根保罗-舍勒研究所（PSI）的成像设施设计和建造的定制中子透明样品环境，用于原位湿度依赖性中子暗场成像（NDFI）实验。这种简单的装置与湿气发生器相结合，具有一个连续流动系统，可确保湿空气的持续均匀流动，从而在室温下控制样品的湿度条件。为了方便中子暗场成像测量，该样品室采用了超薄设计，以最大限度地扩大样品-探测器距离扫描范围。样品室可以保持静态或动态相对湿度条件，允许湿度循环。除了与湿度有关的研究外，该系统的多功能性还可用于任何类型的与气流有关的研究。本技术说明详细介绍了该样品环境的工程考虑因素、建造过程和验证。

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来源期刊

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment 物理-光谱学

CiteScore

3.20

自引率

21.40%

发文量

787

审稿时长

1 months

期刊介绍： Section A of Nuclear Instruments and Methods in Physics Research publishes papers on design, manufacturing and performance of scientific instruments with an emphasis on large scale facilities. This includes the development of particle accelerators, ion sources, beam transport systems and target arrangements as well as the use of secondary phenomena such as synchrotron radiation and free electron lasers. It also includes all types of instrumentation for the detection and spectrometry of radiations from high energy processes and nuclear decays, as well as instrumentation for experiments at nuclear reactors. Specialized electronics for nuclear and other types of spectrometry as well as computerization of measurements and control systems in this area also find their place in the A section. Theoretical as well as experimental papers are accepted.

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