A method for prolonging the lifetime of a cesium beam tube in a magnetically-separated state and a cesium atomic clock in a magnetically-separated state

Abstract

The invention discloses a method for prolonging the service life of a magnetic state-selection cesium-beam tube, and a magnetic state-selection cesium atomic clock. The method can prolong the service lives of the existing domestic cesium-beam tube and the magnetic state-selection cesium atomic clock. According to the method provided by the invention, the service life of the magnetic state-selection cesium-beam tube is prolonged by reducing the output current of a multiplier, and finally the service life of the cesium clock is increased by more than one time. Meanwhile, the output signal current of the electronic multiplier is recovered to a frequency locking requirement in an external circuit amplifying manner, and a working voltage automatic adjustment function of the electronic multiplier is added and thus the condition that performance indexes of the cesium clock meet requirements is ensured.

Description

technical field [0001] The invention relates to the technical field of magnetically-separated cesium atomic clocks, in particular to a method for prolonging the service life of a magnetically-separated cesium beam tube and a magnetically-separated cesium atomic clock capable of extending the service life. Background technique [0002] As a transportable primary frequency standard, the small magnetically separated cesium atomic clock plays an important role in the field of time and frequency. In my country, the development of small magnetically separated cesium atomic clocks began in the 1960s. However, the problem of the lifetime of cesium beam tubes has not been broken until recently, and a cesium beam tube with a long life of more than 4 years has been developed. Nevertheless, it is still of great significance to further extend the lifetime of existing cesium beam tubes, no matter whether they have long lifetime or short lifetime. [0003] The cesium beam tube is the core...

AI Technical Summary

Problems solved by technology

[0004] ① The vacuum degree of the cesium beam tube becomes poor, resulting in a high-voltage short circuit of the titanium pump;

Although China has recently broken through the life of the electron multiplier, there is still a certain gap compared with the life of other components. If this gap can be made up by other technical methods, it will be of great significance

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