CN103415196B - A kind of small-sized nonmagnetic atom shielding and magnetic actuation means - Google Patents
A kind of small-sized nonmagnetic atom shielding and magnetic actuation means Download PDFInfo
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- CN103415196B CN103415196B CN201310341790.5A CN201310341790A CN103415196B CN 103415196 B CN103415196 B CN 103415196B CN 201310341790 A CN201310341790 A CN 201310341790A CN 103415196 B CN103415196 B CN 103415196B
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Abstract
A kind of small-sized nonmagnetic atom shielding and magnetic actuation means, including: inner shield shell, inner shield shell outer surface is tied with the heating coil of double wrap line opposing connection；Middle shielding shell；External shield shell；Adiabatic shell, insulated shell is placed between inner shield shell and middle shielding shell；Magnetic manipulation layer, magnetic manipulation is placed on inside inner shield shell, and magnetic manipulation layer is tied with couple of conductor respectively along three orthogonal directions。This device cumulative volume is less than 500cm3(482.33cm3, Ф 8.5cm × 8.5cm)。The present invention shields shell decay external magnetic field by interior China and foreign countries three layers, thus realizing the magnetic field shielding to alkali metal atom device；Realize the temperature conditions of alkali metal device is kept by heating the heating of coil galvanization and adiabatic shell thermal insulation；By regulating magnetic manipulation layer three orthogonal direction current in wire size respectively, it is achieved internally shielding magnetic field regulation and control within shell。It is little that the present invention has volume, it is easy to the feature that processing realizes。It is applicable to atomic clock, atom magnetometer and atomic gyroscope。
Description
Technical field
The present invention designs magnetic field shielding and manipulation field, magnetic field, shields and magnetic actuation means more particularly, to a kind of miniaturization nonmagnetic atom for alkali metal atom device。Can be used for atom magnetometer, atomic clock and atomic gyroscope。
Background technology
Atom device is the new sensor by the detection of alkali metal atom Spin precession measures respective physical amount, and it mainly has atomic clock, atomic gyroscope, atom magnetometer etc.。Along with the development of micro-electromechanical technology and minute manufacturing technology, atom device is constantly to integrated, and miniaturization develops。
Atomic spin is subject to external magnetic field interference, the downfield environment that atom device will be stable when working。So the effectively shielding in magnetic field is to ensure that atom device is stable to external world, one of key technology of precise operation。Along with the miniaturization of atom device, the magnetic field shielding device of atom device is also created the demand of miniaturization。
The small-sized magnetic field shielding device of the JohnKitching design of National Institute of Standards and Technology is only simple employs a kind of shielding material, and does not have the magnetic operating-controlling mechanism in the heating arrangement needed for integrated atom device and three directions at design apparatus。
High-permeability material shielding shell can be decayed in magnetic field to external world, thus reducing the magnetic field size of its internal cavities, it is achieved magnetic field shielding purpose。Theoretical according to magnetic field shielding, the shielding properties in magnetic field is restricted by the electromagnetic attributes of shielding material, the material magnetic field shielding performance that pcrmeability is more big is more good；Produced by the material that resistivity is high, pyromagnetic noise is less。The material that initial permeability is big is good to the shield effectiveness of low-intensity magnetic field。The material that saturation induction intensity is big can still keep good shield effectiveness under stronger magnetic field。The screening arrangement of homogenous material composition can not meet effectively shielding on a large scale of magnetic field shielding and being required of low grade fever magnetic noise。
Summary of the invention
The technology of the present invention solves problem: overcome the deficiencies in the prior art, a kind of magnetic shield for small-sized atom device and magnetic actuation means are provided, nested to realize the shielding requirements in small-sized atom device magnetic field to external world by using multiple different shielding material to meet, it is integrated with adiabatic shell and the heating coil of atom device simultaneously。
Technical scheme is as follows: the shielding of a kind of small-sized nonmagnetic atom and magnetic actuation means, it is characterized in that including: inner shield shell 1, middle shielding shell 2, external shield shell 3, adiabatic shell 4 and magnetic manipulation layer 5, inner shield shell 1, middle shielding shell 2 are together with the inlaid-assembling from inside to outside of external shield shell 3, adiabatic shell 4 is placed between inner shield shell 1 and middle shielding shell 2, and magnetic manipulation layer 5 is placed in inner shield shell 1；Manipulate at magnetic and layer 5 is tied with couple of conductor 6 respectively along three orthogonal directions, be tied with the heating coil 7 of double wrap line opposing connection at inner shield shell 1 outer surface；The shape of described inner shield shell 1, middle shielding shell 2, external shield shell 3 and adiabatic shell 4 is cylindrical shape, includes cylinder and two parts of cover respectively。
Described inner shield shell 1 is made up of MnZn ferrite material。
Described middle shielding shell 2 is made up of permalloy。
Described external shield shell 3 is made up of amorphous composite material material。
Described adiabatic shell 4 is made up of bakelite。
On described magnetic manipulation layer 5, three orthogonal directions have wide a pair groove for 3mm, and wire 6 is wrapped on magnetic manipulation layer 5 along groove。
Described magnetic manipulation layer 5 internal cavities is designed as lockhole type, and Pt100 temperature sensor probe is fixed in cavity inside。
Described inner shield shell 1 has the through hole that diameter is 2.5mm at cylinder body bottom edge, and 6 wires for the magnetic manipulation layer 5 in portion disposed within pass through。
Described middle shielding shell 2 and external shield shell 3, have the through hole that diameter is 2.8mm at cylinder body bottom edge, and 6 wires of magnetic manipulation layer 5 and 2 wires of inner shield shell 1 for portion disposed within pass through。
Described inner shield shell 1, middle shielding shell 2, external shield shell 3 and adiabatic shell 4 have, at its cover and 3.5mm place, cylinder Shang Juqi center, the concentric pylone that diameter is 5mm。
Present invention advantage compared with prior art is in that:
(1) by the present invention in that and meet nesting to realize the shielding requirements in small-sized atom device magnetic field to external world with multiple different shielding materials, be integrated with adiabatic shell and the heating coil of atom device simultaneously。
(2) to have volume little for the present invention, it is easy to the feature that processing realizes。It is applicable to atomic clock, atom magnetometer and atomic gyroscope。
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the inner shield shell structurre schematic diagram in the present invention；
Fig. 3 is the middle shielding case Rotating fields schematic diagram in the present invention；Left figure is the shell portion of middle level shielding shell, and right figure is the cover part of middle level shielding shell。
Fig. 4 is the magnetic manipulation Rotating fields schematic diagram of the present invention。
Detailed description of the invention
As it is shown in figure 1, miniaturization nonmagnetic atom of the present invention shielding and magnetic actuation means include: inner shield shell 1, inner shield shell outer surface is tied with the heating coil 7 of double wrap line opposing connection；Middle shielding shell 2；External shield shell 3；Adiabatic shell 4；Magnetic manipulation layer 5, magnetic manipulation layer is tied with couple of conductor 6 respectively along three orthogonal directions。
As in figure 2 it is shown, inner shield shell 1 is made up of MnZn ferrite material, being shaped as cylindrical shape, be made up of cylinder and two parts of cover, cylinder interior diameter is 34mm, and external diameter is 44mm, tube length 47mm。The edge endless belt 11 of high 1.5mm is had in the design of cylinder two ends。
As it is shown on figure 3, middle shielding shell 2 is made up of permalloy, it is shaped as cylindrical shape, is made up of cylinder and two parts of cover。Cylinder interior diameter is 54mm, and external diameter is 75mm, tube length 76mm。Cover is designed as the step design of three different round platforms of diameter, base frame diameter 75mm, high 6mm；Middle diameter 65mm, high 5mm；Base frame diameter 54mm, high 5mm。
External shield shell 3 is made up of amorphous composite material material, is shaped as cylindrical shape, is made up of cylinder and two parts of cover。Cylinder overall diameter 85mm, thick 5mm, tube length 85mm。Cover diameter 75mm, thick 4mm。
Adiabatic shell 4 is made up of bakelite, is shaped as cylindrical shape, is made up of cylinder and two parts of cover。Cylinder interior diameter is 47mm, and external diameter is 53mm, tube length 54mm。
On magnetic manipulation layer 5, three orthogonal directions have wide a pair groove for 3mm, and wire 6 is wrapped on magnetic manipulation layer along groove。
Magnetic manipulation layer 5 internal cavities is designed as lockhole type 51, such as Fig. 4。Pt100 temperature sensor probe 52 is fixed in cavity inside。
Inner shield shell 1 has the through hole that diameter is 2.5mm at cylinder body bottom edge, and 6 wires of the magnetic manipulation layer 5 being available for portion disposed within pass through。
Middle shielding shell 2 and external shield shell 3, have the through hole that diameter is 2.8mm at cylinder body bottom edge, and 6 wires of magnetic manipulation layer 5 and 2 wires of inner shield shell 1 that are available for portion disposed within pass through。
The nested order from inside to outside of inner shield shell 1, middle shielding shell 2 and external shield shell 3 that three kinds of different materials are made。
Adiabatic shell 4 is placed between inner shield shell 1 and middle shielding shell 2。
Magnetic manipulation layer 5 is placed in inner shield shell。
Inner shield shell 1, middle shielding shell 2, external shield shell 3, adiabatic shell 4 have, at its cover and 3.5mm place, cylinder Shang Juqi center, the concentric pylone that diameter is 5mm。
After the assembling of this device, volume is less than 500cm3482.33cm3, Ф 8.5cm × 8.5cm。
Non-elaborated part of the present invention belongs to techniques well known。
Although disclosing highly preferred embodiment of the present invention and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that: without departing from the spirit and scope of the invention and the appended claims, various replacements, to change and modifications be all possible。Therefore, the present invention should not be limited to most preferred embodiment and accompanying drawing disclosure of that。
Claims (10)
1. a small-sized nonmagnetic atom shielding and magnetic actuation means, it is characterized in that including: inner shield shell (1), middle shielding shell (2), external shield shell (3), adiabatic shell (4) and magnetic manipulation layer (5), the inlaid-assembling from inside to outside of inner shield shell (1), middle shielding shell (2) and external shield shell (3) is together, adiabatic shell (4) is placed between inner shield shell (1) and middle shielding shell (2), and magnetic manipulation layer (5) is placed in inner shield shell (1)；Manipulate at magnetic and layer (5) is tied with couple of conductor (6) respectively along three orthogonal directions, three orthogonal directions refer to orthogonal three directions, are tied with the heating coil (7) of double wrap line opposing connection at inner shield shell (1) outer surface；The shape of described inner shield shell (1), middle shielding shell (2), external shield shell (3) and adiabatic shell (4) is cylindrical shape, includes cylinder and two parts of cover respectively。
2. the small-sized nonmagnetic atom shielding of one according to claim 1 and magnetic actuation means, it is characterised in that: described inner shield shell (1) is made up of MnZn ferrite material。
3. the small-sized nonmagnetic atom shielding of one according to claim 1 and magnetic actuation means, it is characterised in that: described middle shielding shell (2) is made up of permalloy。
4. the small-sized nonmagnetic atom shielding of one according to claim 1 and magnetic actuation means, it is characterised in that: described external shield shell (3) is made up of amorphous composite material。
5. the small-sized nonmagnetic atom shielding of one according to claim 1 and magnetic actuation means, it is characterised in that: described adiabatic shell (4) is made up of bakelite。
6. the small-sized nonmagnetic atom shielding of one according to claim 1 and magnetic actuation means, it is characterized in that: described magnetic manipulation layer (5) upper three orthogonal directions have wide a pair groove for 3mm, and wire (6) is wrapped on magnetic manipulation layer (5) along groove。
7. the small-sized nonmagnetic atom shielding of one according to claim 1 and magnetic actuation means, it is characterised in that: described magnetic manipulation layer (5) internal cavities is designed as lockhole type, and Pt100 temperature sensor probe is fixed on cavity inside。
8. the small-sized nonmagnetic atom shielding of one according to claim 1 and magnetic actuation means, it is characterized in that: described inner shield shell (1) has the through hole that diameter is 2.5mm at cylinder body bottom edge, 6 wires for magnetic manipulation layer (5) in portion disposed within pass through。
9. the small-sized nonmagnetic atom shielding of one according to claim 1 and magnetic actuation means, it is characterized in that: described middle shielding shell (2) and external shield shell (3), have the through hole that diameter is 2.8mm at cylinder body bottom edge, 6 wires of magnetic manipulation layer (5) and 2 wires of inner shield shell (1) for portion disposed within pass through。
10. the small-sized nonmagnetic atom shielding of one according to claim 1 and magnetic actuation means, it is characterised in that: described inner shield shell (1), middle shielding shell (2), external shield shell (3) and adiabatic shell (4) have, at its cover and 3.5mm place, cylinder Shang Juqi center, the concentric pylone that diameter is 5mm。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310341790.5A CN103415196B (en) | 2013-08-07 | 2013-08-07 | A kind of small-sized nonmagnetic atom shielding and magnetic actuation means |
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| CN201310341790.5A CN103415196B (en) | 2013-08-07 | 2013-08-07 | A kind of small-sized nonmagnetic atom shielding and magnetic actuation means |
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| CN103415196A CN103415196A (en) | 2013-11-27 |
| CN103415196B true CN103415196B (en) | 2016-06-22 |
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| CN105263197B (en) * | 2015-08-31 | 2018-02-06 | 北京航天控制仪器研究所 | A kind of uniform no magnet heater for magnetic resonance gyroscope instrument |
| CN108896945B (en) * | 2018-06-19 | 2020-11-13 | 山东航天电子技术研究所 | Sensitivity index calibration method of high-sensitivity atomic magnetometer |
| CN112786324B (en) * | 2021-01-29 | 2022-07-12 | 北京双杰电气股份有限公司 | Low-voltage direct-current circuit breaker arc extinguish chamber and circuit breaker |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85101860A (en) * | 1985-04-01 | 1987-01-10 | N·V·菲利浦光灯制造公司 | Nuclear magnetic resonance analyser |
| CN1056380A (en) * | 1990-05-04 | 1991-11-20 | 北京有色金属研究总院 | Quantum interferometer of cylindrical superconducting thick-film |
| CN101166411A (en) * | 2006-10-18 | 2008-04-23 | 中国科学院高能物理研究所 | A magnetic shielding device with multi-layer compound structure for shielding strong magnetic field |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05308199A (en) * | 1991-03-27 | 1993-11-19 | Furukawa Electric Co Ltd:The | Formation method of low magnetic field using superconductor |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85101860A (en) * | 1985-04-01 | 1987-01-10 | N·V·菲利浦光灯制造公司 | Nuclear magnetic resonance analyser |
| CN1056380A (en) * | 1990-05-04 | 1991-11-20 | 北京有色金属研究总院 | Quantum interferometer of cylindrical superconducting thick-film |
| CN101166411A (en) * | 2006-10-18 | 2008-04-23 | 中国科学院高能物理研究所 | A magnetic shielding device with multi-layer compound structure for shielding strong magnetic field |
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