DEVELOPMENT OF A COMPACT STEERING MAGNET WITH EIGHT-POLE STRUCTURE

摘要

A compact steering magnet has been devised. The steering magnet has "eight-pole structure". The strength and its direction of the dipole field can be electrically changed. The outer radius, the bore radius and the length of the magnet are 120 mm, 14 mm and 60 mm, respectively. The effective length is measured to be 97 mm and magnetic field of 0.4 kG is achieved. The steering magnet is very useful under severe space limitation.