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.
Optical clocks will potentially become the new frequency standard for the SI-definition of the second. Many national metrology institutes around the world have already implemented different versions of such clocks and others are in process of doing so. At SP Technical Research Institute of Sweden, this process has recently begun. This thesis investigates the properties of the Zeeman slower that is to be used as part of the clock. A simple Gaussmeter was constructed from a semiconductor Hall sensor and used to measure the magnetic field profile of the slower. This report also contains the design for an electronic control circuit based on the Arduino platform, which can be used to control the magnetic field. The results showed that the particular slower investigated here will likely not need a control circuit. However, the control circuit can be used in other optical clocks or even in other applications.