| 铯原子喷泉钟均匀C场的实现 |
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| 引用本文： | 吴长江,管勇,陈江,张辉,阮军,张首刚.铯原子喷泉钟均匀C场的实现[J].时间频率学报,2011,34(2). |
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| 作者姓名： | 吴长江 管勇 陈江 张辉 阮军 张首刚 |
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| 作者单位： | 1. 中国科学院国家授时中心,西安,710600
2. 西北大学光子学与光子技术研究所,西安,710069 |
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| 基金项目： | 中国科学院大科学装置开放资助项目，中国科学院“西部之光”人才培养计划资助项目，国家授时中心知识创新工程青年人才领域前沿项目专项资助课题 |
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| 摘 要： | C场均匀度是影响铯原子喷泉钟性能的重要因素。为了消除漏磁等对磁场均匀度的影响，加入补偿线圈，通过用最小二乘法计算，逐次得出补偿线圈的个数、位置与电流。实验表明：计算数据与实验结果吻合，得到c场不均匀性小于2nT、长度达48cm的均匀区。
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| 关 键 词： | 铯喷泉钟 磁屏蔽 最小二乘法 |
A realization of uniform C field in caesium atomic fountain clock |
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| WU Chang-jiang,GUAN Yong,CHEN Jiang,ZHANG Hui,RUAN Jun,ZHANG Shou-gang.A realization of uniform C field in caesium atomic fountain clock[J].Journal of Time and Frequency,2011,34(2). |
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| Authors: | WU Chang-jiang GUAN Yong CHEN Jiang ZHANG Hui RUAN Jun ZHANG Shou-gang |
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| Institution: | WU Chang-jiang1,2,GUAN Yong1,CHEN Jiang1,ZHANG Hui3,RUAN Jun1,4,ZHANG Shou-gang1,4 |
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| Abstract: | The performance of the caesium atomic fountain clock is affected by the uniformity of the C field. In order to compensate the uneven magnetic field caused by the leakage in magnetic shielding region, compensation coils are introduced and the number, position and current of the coils are calculated by the least square methgd. The experimental results agree with the theoretical prediction and an uniform magnetic-field of 48 cm with a fluctuation of less than 2 nT is obtained. |
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| Keywords: | caesium fountain clock magnetic shielding least squares |
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