星载铯钟C场设计及磁场分析

C-Field Design and Magnetic Field Analysis for Spaceborne Cesium Atomic Clock

为了提高星载铯钟的频率准确度,依据星载铯钟C场系统的设计要求,运用毕奥—莎伐尔定律计算线圈磁场,设计并分析了C场磁场系统。通过数值计算证明了设计的合理性,得到了最佳的主C和副C线圈匝数等参数,改善了原子束流轨迹上磁场强度的均匀性并得到试验验证,可将信号的频率准确度提高一个量级。

Based on the requirement for design constraints and the Biot-Savart law,the C-field is designed and analyzed to improve the accuracy of spaceborne cesium atomic clock frequency in this paper.The rationality of the design approach is validated by numerical results.Adjusting turns of primary C coils and accessorial C coils according to the numerical result of magnetic field distribution can improve the uniform of magnetic field,and the accuracy of signal frequency can be improved by one order of magnitude.