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A global uniform magnetic field coil considering magnetic shielding coupling

A uniform magnetic field and magnetic shielding technology, applied in the direction of coils, special data processing applications, instruments, etc., can solve the problems of small uniform area of ​​coils, the miniaturization and practicality of bound quantum devices, and achieve the convenience of miniaturization and integration Effect

Active Publication Date: 2019-01-18
NAT UNIV OF DEFENSE TECH
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  • Application Information

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Problems solved by technology

However, there are still some problems in the application of these coils in new miniaturized quantum devices: First, the influence of magnetic shielding on the coil magnetic field is usually not considered in the design of these coils, and the coils with good parameters are often used in the magnetic shielding. The uniformity will change; the second is that the uniformity area of ​​these coils is not large, and usually a ten-volume coil frame is required to provide a uniform magnetic field for a volume sensitive unit, which greatly restricts the miniaturization and practicality of quantum devices

Method used

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  • A global uniform magnetic field coil considering magnetic shielding coupling
  • A global uniform magnetic field coil considering magnetic shielding coupling
  • A global uniform magnetic field coil considering magnetic shielding coupling

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with accompanying drawing and embodiment, the embodiment of the present invention includes but not limited to following embodiment:

[0034] like figure 2 As shown, when m=6, magnetic shielding radius b=9mm, magnetic shielding half height h=14mm, coil radius a=7.9mm, 6 pairs of symmetrical coil positions c i = {1.22, 3.55, 5.88, 8.22, 10.55, 12.88} mm, an example of a magnetic shielding coil, its theoretical unevenness is less than one thousandth.

[0035] image 3 The magnetic field distribution of the above-mentioned magnetic shielding coil after some necessary openings for magnetic shielding is given. After the coil is optimized for translation for specific magnetic shielding openings, it can be seen that except for a small area near the coil, the rest of the magnetic shielding The magnetic field in most of the areas inside is uniform, and the non-uniformity of the magnetic field near the center ...

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Abstract

The invention relates to a global uniform magnetic field coil considering magnetic shielding coupling. According to the actual needs of the coil scheme, the appropriate coil pairs m are selected to obtain the required uniformity of the coil scheme. The invention obtains the analytic formula of coil design which can consider the influence of magnetic shielding, and is more convenient for coil design optimization. All the spatial magnetic fields in the coil are uniform, which is very convenient for the miniaturization and integration of new quantum devices. The number of coil loops can be adjusted reasonably according to the actual uniformity requirements, and the coil has considerable flexibility.

Description

technical field [0001] The invention relates to a novel global uniform magnetic field coil considering the coupling effect of magnetic shielding, which is of great significance to the development of miniaturized quantum devices in a new generation of weak magnetic environments, and belongs to the field of engineering electromagnetics and quantum devices. Background technique [0002] With the continuous development of science and technology in today's world, new quantum devices such as atomic clocks, atomic magnetometers, and atomic gyroscopes have emerged one after another. They are widely concerned at home and abroad for their excellent performance in their respective fields. How to realize the miniaturization and integration of these devices under the premise of ensuring performance is the key issue whether these quantum devices can enter people's lives. [0003] Most of these quantum devices require a uniform magnetic field in a weak magnetic environment, that is, to ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F5/00G06F17/50
CPCG06F30/23G06F30/367H01F5/00
Inventor 张燚汪之国罗晖李佳佳夏涛
Owner NAT UNIV OF DEFENSE TECH
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