Newly Designed Dipole-Beam Optics System for Cesium-Beam Frequency Standards

A new dipole-beam optics system has been put forward. It has all the basic advantages of the hexapole-beam optics system and can be made into a flop-in system. These advantages have been proven. We have used these beam optics in a beam tube with a cavity length of 3.7 m and observed Ramsey line width of 22-23 Hz.