Polarization analysis on the LET cold neutron spectrometer using a 3He spin-filter: first results
Polarization analysis on the LET cold neutron spectrometer using a 3He spin-filter: first results
复制标题
使用 3He 旋转滤波器对 LET 冷中子谱仪进行偏振分析：初步结果
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
G. Nilsen
中科院分区：
文献类型：
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作者：
G. Cassella;J. Stewart;G. Paternó;V. García Sakai;M. Devonport;P. Galsworthy;R. Bewley;D. Voneshen;D. Raspino;G. Nilsen
我们报告的设计和建造的中子极化分析仪的基础上3He自旋过滤器的LET谱仪在ISIS设施。它的调试完成了仪器的单轴偏振模式。除了3He自旋过滤池，分析仪还包括一组电磁线圈，以提供均匀的磁场，以及一个准直器，以消除样品环境和分析仪基础设施的背景。3He电池通过气罐与LET主罐真空隔离，这允许快速电池转换并确保安全操作。除了分析仪硬件之外，还编写了软件来减少和校正偏振数据。实现了偏振模式的成功操作，用于分离有机太阳能电池聚合物共混物中的相干和非相干动力学。
We report on the design and construction of a neutron polarization analyzer based on a 3He spin filter for the LET spectrometer at the ISIS facility. Its commissioning completes the uniaxial polarized mode of the instrument. Besides the 3He spin filter cell, the analyzer consists of a set of electromagnetic coils to provide a uniform magnetic field, and a collimator to eliminate background from the sample environment and analyzer infrastructure. The 3He cell is separated from the LET main tank vacuum by means of a gas tank, which permits rapid cell changeovers and guarantees safe operation. In addition to the analyzer hardware, software has been written to reduce and correct polarized data. The successful operation of the polarized mode was realized for the separation of coherent and incoherent dynamics in an organic solar cell polymer blend.