High shimming air chamber heating structure

Abstract

A high shimming air chamber heating structure is used for an atomic spin inertia measurement system and comprises a supporting base, a heat preservation device and a heating device. The heat preservation device wraps the heating device and then is fixed into the supporting base. The heating device comprises an inner heat conduction device and a high shimming heating film wrapping the whole side surface of the inner heat conduction device; the inner heat conduction device comprises an air chamber seat and an air chamber fixing part which are made of high-thermal-conductivity materials and are in butt joint with each other, the alkali metal air chamber is clamped and coated through mutual opposite pressing of the air chamber seat and the air chamber fixing part, the heat conduction area of the alkali metal air chamber is increased, and the local temperature of the alkali metal air chamber is prevented from being too high. The high shimming heating film directly coats the side surfaces ofthe air chamber seat and the air chamber fixing part which are made of high-thermal-conductivity materials; and the high shimming heating film is a high shimming heating film of which the temperaturefluctuation amplitude is kept between 5mK and 8mK in normal work, so that the temperature fluctuation in the alkali metal gas chamber is kept between 0.5 K and 1.5 K when the atomic spin inertia measurement system works normally.

Description

technical field [0001] The invention relates to the technical field of atomic spin inertial measurement systems, in particular to a high-shimming gas chamber heating structure for atomic spin inertial measurement systems. Background technique [0002] The atomic spin inertial measurement system is currently the inertial measurement system with the highest theoretical precision in the field of navigation. The alkali metal gas chamber is the core component of the atomic spin inertial measurement system. The atomic density in the gas chamber has a great influence on the output signal of the atomic spin inertial measurement system The sensitivity of the gas cell has a direct impact, and the density of the alkali metal atoms is determined by the heating temperature of the gas cell, and the stability and uniformity of the gas cell heating temperature are affected by the gas cell heating structure, so the high shim field gas cell heating structure is very important for improving the...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a high-shim gas chamber heating structure capable of accurate temperature measurement, which can not only isolate the reverse conduction heat transfer of the heating device and the convective heat transfer of the beam hole, but also overcome the existing non-magnetic high-frequency electric heating system. Inaccurate temperature measurement, large temperature gradient caused by conduction heat transfer and convective heat transfer

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