No Magnetic Moment Helmholtz Coil
Introduction
No Magnetic Moment Helmholtz Coils are installed in a certain geometric structure through several groups of coils, and the external magnetic field of the coils rapidly decays through a certain number of turns and current direction of each group of coils, resulting in zero magnetic moment of the coils. No Magnetic Moment Helmholtz Coil have outstanding advantages: they do not produce magnetic interference in environments beyond a certain distance during operation, which is of great significance for multiple systems to work simultaneously; In addition, the moment free coil does not magnetize nearby magnetic materials, thus avoiding additional errors in this regard for the No Magnetic Moment Helmholtz Coil
When used in conjunction with a magnetic shielding cylinder, a torque free coil can generate a standard magnetic field without interference inside the shielding cylinder to calibrate instruments and equipment. The non moment coil has outstanding advantages: the magnetic moment is basically zero, and the external magnetic field of the coil decays rapidly, which can effectively reduce the mutual interference between the reproducing magnetic field and the magnetic shielding device, and improve the linearity of the reproducing magnetic field of the coil in the magnetic shielding cylinder and magnetic shielding room.
Reference cases
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Model |
Parameters |
Reference picture |
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DXWJ10-1 |
8 ring - no magnetic moment coil Dimensions: diameter 192mm, length 160mm, the central magnetic field 1Gs. 100mm long in the axis, the uniformity is 5.5%, 80mm long in the axis, the uniformity is 1.1%, 60mm long in the axis, the uniformity is 0.11%. |
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DXWJ20-2 |
8 ring - no magnetic moment coil Dimensions: diameter 646mm, length 532mm, the central magnetic field 2Gs. 100mm long in the axis, the uniformity is 0.011%, 200mm long in the axis, the uniformity is 0.092%, 300mm long in the axi, the uniformity is 2.3%. |
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FAQ