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作为中子三轴谱仪最核心的部件之一,单色器的性能好坏对最终的数据探测分析起着至关重要的作用,因此对目前国内和法国ILL研究所、LLB实验室的部分三轴谱仪单色器参数指标进行了调研。由于谱仪所摆放的位置不同,开展实验研究所关注的波段也不尽一样,单色器的设计考虑各有特点,需要结合自身中子源的特点以及安放区域限制来进行选择。文章在介绍聚焦单色器原理的基础上,对典型的三轴谱仪单色器装置进行了分析,包括尺寸范围、晶体选择、研制能力等,对于中子三轴谱仪单色器的建造,在选型和物理参数指标上,提出初步的想法。
As one of the core components of a neutron tri-axial spectrometer, the performance of a monochromator plays a crucial role in the final data detection and analysis. Therefore, for the current domestic and French ILL research institutes, part of the LLB laboratory Three-axis spectrometer monochromator parameters were investigated. Due to the different positions of the spectrometer, the band of interest in conducting experimental research is also different. The design considerations of the monochromators have their own characteristics and need to be selected according to the characteristics of their own neutron sources and the restrictions on the placement of the area. Based on the introduction of the principle of focusing monochromator, the article analyzes the typical three-axis spectrometer monochromator device, including the size range, crystal selection, research and development capabilities, etc. For the construction of neutron triaxial monochromator , In the selection and physical parameters indicators, put forward the initial idea.