一种用于氦三中子极化的无旋转机构万向磁场系统
The universal magnetic field system without a rotating mechanism, consisting of eight sets of coils, solves the problems of complex rotating platforms and large volume in existing technologies, and realizes a magnetic field system with smaller volume and higher uniformity, which is suitable for wide-angle polarized helium-3 neutron polarization devices.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA SPALLATION NEUTRON SOURCE SCI CENT
- Filing Date
- 2023-09-06
- Publication Date
- 2026-07-17
AI Technical Summary
The magnetic field system of the existing wide-angle helium-3 neutron polarization device needs to generate a three-dimensional changing main magnetic field in the polarized helium-3 region, and requires a rotating stage and multiple sets of Helmholtz coils, which makes the project complex and large in size.
A omnidirectional magnetic field system without a rotating mechanism, consisting of eight sets of coils, generates magnetic fields in different directions by nesting the first and second spatial coils. Combined with current adjustment, the direction of the three-dimensional spatial magnetic field can be changed, thus avoiding the use of a rotating platform.
A smaller and more uniform magnetic field system was achieved, with a magnetic field normalization gradient ≤10-4/cm, a large neutron scattering angle and no dark area, making it suitable for general-purpose spectrometers.
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Figure CN117334369B_ABST