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Small-sized atom magnetic shielding and magnetic control device

A magnetic control and magnetic shielding technology, applied in the direction of magnetic/electric field shielding, electrical components, etc., can solve the problems of not being able to meet the needs of large-scale effective shielding and low thermal and magnetic noise, and achieve the effect of easy processing and small size

Inactive Publication Date: 2013-11-27
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Shielding devices composed of a single material cannot meet all requirements for large-scale effective shielding and low thermal-magnetic noise for magnetic field shielding

Method used

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  • Small-sized atom magnetic shielding and magnetic control device
  • Small-sized atom magnetic shielding and magnetic control device
  • Small-sized atom magnetic shielding and magnetic control device

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Embodiment Construction

[0024] Such as figure 1 As shown, the miniaturized atomic magnetic shielding and magnetic manipulation device of the present invention includes: an inner shielding shell 1, the outer surface of the inner shielding shell is wrapped with a double-wound heating coil 7; a middle shielding shell 2; an outer shielding shell 3; heat insulating shell layer 4; magnetic control layer 5, on which a pair of wires 6 are respectively wound along three orthogonal directions.

[0025] Such as figure 2 As shown, the inner shielding shell 1 is made of manganese-zinc ferrite material and is cylindrical in shape. Edge rings 11 with a height of 1.5 mm are designed at both ends of the cylinder.

[0026] Such as image 3 As shown, the middle shielding shell layer 2 is made of permalloy, is cylindrical in shape, and consists of two parts: a cylinder body and a cylinder cover. The inner diameter of the cylinder is 54mm, the outer diameter is 75mm, and the length of the cylinder is 76mm. The cyli...

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Abstract

A small-sized atom magnetic shielding and magnetic control device comprises an inner shielding shell layer, a middle shielding shell layer, an outer shielding shell layer, a heat insulation shell layer and a magnetic control layer, wherein a heating coil is wound around the outer surface of the inner shielding shell layer in a double-wire opposite wrapping mode, the heat insulation shell layer is arranged between the inner shielding shell layer and the middle shielding shell layer, the magnetic control layer is arranged inside the inner shielding shell layer, and a pair of wires is arranged in each of three orthogonal directions of the magnetic control layer in a winding mode. The total volume of the device is smaller than 500 cm<3> (482.33cm<3>, the diameter is 8.5cm*8.5cm). According to the small-sized atom magnetic shielding and magnetic control device, the external magnetic field is weakened through the inner shielding shell layer, the middle shielding shell layer and the outer shielding shell layer, and then magnetic shielding of an alkali metal atom device is achieved; the temperature condition of the alkali metal atom device is kept through heating of the heating coil after the heat coil is powered on and heat insulation of the heat insulation shell layer; magnetic control of the interior of the inner shielding shell layer is achieved by adjusting the current of the wires in the three orthogonal directions of the magnetic control layer. The small-sized atom magnetic shielding and magnetic control device has the advantages of being small in size and easy to machine and obtain. The small-sized atom magnetic shielding and magnetic control device is suitable for an atomic clock, an atom magnetometer and an atom gyroscope.

Description

technical field [0001] The invention relates to the fields of magnetic field shielding and magnetic field manipulation, and more specifically relates to a miniaturized atomic magnetic shielding and magnetic manipulation device for alkali metal atomic devices. Can be used in atomic magnetometers, atomic clocks and atomic gyroscopes. Background technique [0002] Atomic devices are new types of sensing devices that measure the corresponding physical quantities by detecting the spin precession of alkali metal atoms, which mainly include atomic clocks, atomic gyroscopes, and atomic magnetometers. With the development of micro-electromechanical technology and micro-nano manufacturing technology, atomic devices continue to develop in the direction of integration and miniaturization. [0003] Atomic spins are easily disturbed by external magnetic fields, and atomic devices need a stable low magnetic field environment when working. Therefore, the effective shielding of the externa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00
Inventor 董海峰宣立峰卓超
Owner BEIHANG UNIV
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