In this paper it is proposed to use a periodic array of very strong and compact neodymium magnets to create the desired magnetic field of the Zeeman slower. A model of the slower based on point-like magnetic dipoles has been introduced, which is a key element in designing of such type of a slower. The high precision of that simple model is confirmed with exact numerical calculations of the magnetic field for finite-size magnets. The two basic configurations of the magnetic dipole Zeeman slower, with longitudinal and transverse direction of magnetic dipoles, have been investigated.
Transverse Zeeman slower composed of an array of permanent magnets is investigated for Sr optical clock. We calculated the magnetic field distribution of 88 Sr atoms based on experimental condition, achieving a reduction of the velocity of atoms from 410 m/s to 50 m/s. The atoms flux through the transverse magnetic field was 7.9×105. Such permanent Zeeman slower needs no high currents or water cooling and the spatial distribution of its magnetic field can be adjusted. Another advantage of this Zeeman slower is its small size and high reliability. Therefore, a miniature Zeeman slower can be attained.