A New Pulse Magnet Design Utilizing Tape Wound Cores

Pulse magnets were built utilizing tape wound cores in order to lower magnet power requirements at high pulse repetition rates and high gap flux densities. The primary reason this project was undertaken was to bend higher energy beams with existing power supplies. A decrease in the amount of electrical steel from 2720 kg for the original laminated core pulse magnet design to 260 kg and the elimination of the ceramic vacuum chamber resulted in substantial savings. Two new magnets are now operational with the capability of deflecting 40 to 50 GeV/c beams through ± 0.35° (6.13 mrad) at a PRR = 360 pps. The old magnets with the same power supplies could only bend 21 GeV/c beams through the same angle. Principal features of this design, including test data, are presented.