【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2 nT、长度达48 cm的均匀区。更多还原

【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 method.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.更多还原