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A Longitudinal Zeeman Slower Based on Ring-Shaped Permanent Magnets for a Strontium Optical Lattice Clock |
| WANG Qiang1,2**, LIN Yi-Ge1, GAO Fang-Lin3, LI Ye1,2, LIN Bai-Ke1,2, MENG Fei1, ZANG Er-Jun1, LI Tian-Chu1, FANG Zhan-Jun1 |
1Division of Time and Frequency, National Institute of Metrology, Beijing 100013
2Department of Precision Instrument, Tsinghua University, Beijing 100084
3Research Institute of Petroleum Exploration and Development, Langfang 065007
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| Cite this article: |
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WANG Qiang, LIN Yi-Ge, GAO Fang-Lin et al 2015 Chin. Phys. Lett. 32 100701 |
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Abstract 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 mT. With this Zeeman slower, the strontium atoms are slowed down to 95 m/s, and approximately 2% of the total atoms are slowed down to less than 50 m/s.
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Received: 01 July 2015
Published: 30 October 2015
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| PACS: |
07.55.Db
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(Generation of magnetic fields; magnets)
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32.60.+i
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(Zeeman and Stark effects)
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37.10.De
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(Atom cooling methods)
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