Magic-PASTIS for XYZ polarization analysis using SEOP polarized 3He gas
Magic-PASTIS for XYZ polarization analysis using SEOP polarized 3He gas
复制标题
Magic-PASTIS 使用 SEOP 偏振 3He 气体进行 XYZ 偏振分析
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
A. Ioffe
中科院分区：
文献类型：
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作者：
E. Babcock;Z. Salhi;P. Pistel;G. Simeoni;A. Ioffe
我们展示了在具有大面积/角度探测器阵列的飞行时间（TOF）中子谱仪上进行中子偏振分析的完整系统的进展。有限元计算已用于对新提出的 PASTIS 线圈组的场梯度进行建模，该线圈组使用广角香蕉形 3He 中子自旋过滤器单元 (NSF) 来覆盖大中子散射立体角。该插件的最终目标是使 X-Y-Z 偏振分析能够安装在未来的热/热飞行时间光谱仪上，尽管该方法也适用于热/冷光谱仪。该系统的组件（例如磁场线圈和设计）一般适用于具有广角探测器阵列的中子光谱，并且用于偏振非弹性中子散射的 3He 广角池开发也独立于用于偏振气体的方法。
We present progress towards a complete system for neutron polarization analysis on a time-of-flight (TOF) neutron spectrometer with a large area/angle detector array. Finite element calculations have been used to model the field gradients of a newly proposed PASTIS coil set, which uses a wide-angle banana shaped 3He Neutron Spin Filter cell (NSF) to cover a large neutron scattering solid angle. The final goal of this insert is to enable X-Y-Z polarization analysis to be installed on the future hot/thermal time-of flight spectrometers, although the method is also applicable to thermal/cold spectrometers as well. The components of this system, such as the magnetic field coils and design are applicable to neutron spectroscopy with wide angle detector arrays in general, and the 3He wide angle cell developments for polarized inelastic neutron scattering are independent from the methods used to polarize the gas as well.