Variable parameter testing system for cesium source emitting beam intensity

Abstract

The invention discloses a variable parameter testing system for cesium source emitting beam intensity. By means of the variable parameter testing system for the cesium source emitting beam intensity, the distance and the inclined angle between a detector and an outlet of a collimator can be accurately controlled, so that the analysis accuracy of the cesium source emitting beam intensity is improved, and meanwhile cesium beam pollution is reduced. The distance and the included angle between the detector and the cesium source are changed through the position between a fixed support and a movable support so that the coordinates of the detector relative to the cesium source can be measured by using a micrometer or other measurement tools, the distance and the included angle between the detector and the collimator can be conveniently accurately obtained, the critical problems such as displacement limitation and inclined angle calculation of the detector are solved, and thus the analysis accuracy of the cesium source emitting beam intensity can be effectively improved. Meanwhile, the cesium source and the detector are connected through a corrugated pipe, the problems of sealing and the vacuum degree can be solved, cesium beam pollution is reduced, the safety of the testing system is improved, and the testing system can be applied to variable parameter measurement and analysis for the beam intensity of various particles.

Description

technical field [0001] The invention relates to the technical field of cesium beam tube performance testing, in particular to a variable parameter testing system for cesium source emission beam intensity. Background technique [0002] The cesium beam tube is the core component of the cesium atomic clock. The beam intensity of the cesium atomic beam in the cesium beam tube after it escapes the collimator has a direct impact on the signal-to-noise ratio of the cesium beam tube and the short-term stability of the cesium clock. The current measurement system mainly has the following two schemes: [0003] A) The cesium beam detector performs angular scanning around the collimator exit, the distance D between the detector and the collimator exit is constant, and the beam intensity distribution is a function of the angle θ between the detector axis and the collimator axis. The scheme is as follows figure 1 shown; [0004] B) The cesium beam detector moves on a straight track perp...

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Problems solved by technology

[0006] Scheme A can observe the state of θ>90°, but the distance D between the detector and the exit of the collimator cannot be changed; Scheme B can change the distance D and the included angle θ to obtain a more comprehensive measurement result of the beam intensity distribution, but The variation range of the included angle θ is limited. These two schemes have limitations and cannot meet the requirements of parameter changes in beam intensity measurement. Therefore, it is necessary to improve the measurement scheme and build a beam intensity variable parameter testing system.

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