The injection septum magnets of the SPring-8 storage ring

Three DC septum magnets and a pulsed septum magnet are used for the injection of the SRing-8 storage ring. This paper describes the design principle of these injection septum magnets and the electromagnetic performances of a prototype pulsed magnet. The peak strength of the magnetic stray field of the pulsed septum magnet is 1.3 gauss on the bump orbit, and is lower than the limit of sensitivity of the measurement on the reference orbit when the field strength in the magnet gap is 5600 gauss and the pulse width is 65 /spl mu/sec.<
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