A Pulsed Setpum Magnet for Extraction from the Fermilab Booster

A pulsed, water-cooled, single-turn septum magnet presently used for extraction from the Fermilab Booster synchrotron is described. The most novel feature of the magnet is the empirically determined shape of the septum coil which compensates for the current distribution and the distortions caused by leads and crossovers. The magnet operates in vacuum at ~20,000 A or ~9 kG, has a half-sine-wave pulse 180 μs long, and operates as a dogleg with an identical magnet to minimize effects of power supply fluctuations.