Measuring device and method of non-orthogonal angle between magnetic coil X and Y axes of atom magnetometer

A technology of atomic magnetic strength and measuring devices, applied in measuring devices, measuring electrical variables, instruments, etc., can solve the problem that saddle coils are difficult to ensure orthogonality, and achieve the effect of improving sensitivity

Active Publication Date: 2016-02-03
SOUTHEAST UNIV
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Problems solved by technology

However, due to its own structure, it is difficult to ensure the orthogonality of the saddle coil during machining, especially the orthogonality in the X and Y directions

Method used

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  • Measuring device and method of non-orthogonal angle between magnetic coil X and Y axes of atom magnetometer
  • Measuring device and method of non-orthogonal angle between magnetic coil X and Y axes of atom magnetometer
  • Measuring device and method of non-orthogonal angle between magnetic coil X and Y axes of atom magnetometer

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] as attached figure 1 Shown is a schematic diagram of the measuring device of the magnetic coil X and Y axis non-orthogonal angles of the atomic magnetometer, including an alkali metal gas chamber 6, a non-magnetic electric heating device 7 for heating the alkali metal gas chamber 6, and a small vacuum System 8, a magnetic shield barrel 12 for shielding external magnetic fields, a three-dimensional magnetic coil 13 for generating a direct current or an alternating magnetic field, a pumping light source system, and a detection light source system; the three-dimensional magnetic coil 13 can be a three-dimensional saddle-shaped magnetic coil or a MHZ magnetic coil.

[0034] The alkali metal gas chamber 6 is located at the center of the atomic magnetometer, and its interior is packaged with alkali metal atoms, which are mixed with inert gas and buffer gas; its exter...

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Abstract

The invention aims to provides a measuring device and method suitable for a non-orthogonal angle between saddle-shaped coil X and Y axes of an SERF atom magnetometer, and belongs to the technical fields of optical detection, weak magnetic detection and uniform magnetic field coils. Aimed at the problem that non-orthogonality of three-dimensional magnetic coils influences the sensitivity of the SERF atom spin magnetometer, the measuring method and device of the non-orthogonal angle between the saddle-shaped coil X and Y axes, which are based on Bloch kinetic equations, are provided. The invention fills in the blanks of the measuring method and device of the non-orthogonal angle between the saddle-shaped coil X and Y axes of the atom magnetometer, effective references are provided for the atom magnetometer to estimate and compensate a magnetic field deviation value, and the improvement of the sensitivity of the SERF atom magnetometer is ensured.

Description

technical field [0001] The invention relates to a method and device for measuring non-orthogonal angles of X and Y axes of a saddle coil suitable for a SERF atomic magnetometer, and belongs to the technical fields of optical detection, weak magnetic detection and uniform magnetic field coils. Background technique [0002] The spin-free interaction relaxation (SpinExchangeRelaxationFreeRegime, SERF) atomic spin magnetometer (hereinafter referred to as the atomic magnetometer) has extremely high theoretical sensitivity and can be widely used in multidisciplinary research. developed projects. So far, the Romalis group at Princeton University has successfully achieved 160aT / Hz 1 / 2 This is the highest magnetic field measurement sensitivity achieved by humans. So far, the performance of atomic magnetometers has far exceeded that of superconducting quantum interference magnetometers. [0003] The atomic magnetometer is a magnetic field measurement device based on ultra-fine energ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00
Inventor 陈熙源张红邹升
Owner SOUTHEAST UNIV
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