A Longitudinal Zeeman Slower Based on Ring-Shaped Permanent Magnets for a Strontium Optical Lattice Clock

We report a longitudinal Zeeman slower based on ring-shaped permanent magnetic dipoles used for the strontium optical lattice clock. The Zeeman slower is composed of 40 permanent magnets with the same outer diameter but different inner diameters. The maximum variation of the axial field from its tar...

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Bibliographic Details
Published in:Chinese physics letters 2015-10, Vol.32 (10), p.22-25
Main Author: 王强 林弋戈 高坊林 李烨 林百科 孟飞 臧二军 李天初 方占军
Format: Article
Language:English
Subjects:
Clocks
Magnetic dipoles
Optical lattices
Permanent magnets
Spatial distribution
Strontium
光晶格
塞曼
永久磁铁
永磁体
环形
磁偶极子
轴向磁场
锶原子
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Summary:We report a longitudinal Zeeman slower based on ring-shaped permanent magnetic dipoles used for the strontium optical lattice clock. The Zeeman slower is composed of 40 permanent magnets with the same outer diameter but different inner diameters. The maximum variation of the axial field from its target values is less than 2%. In most parts of the Zeeman slower, the intensity variations of the field in radial spatial distribution are less than 0.1 roT. With this Zeeman slower, the strontium atoms are slowed down to 95m/s, and approximately 2% of the total atoms are slowed down to less than 50m/s.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/32/10/100701