Design of a Pulsed Switching Magnet for the Bevalac
1989
The design and construction of a water-cooled, pulsed, laminated core dipole magnet recently installed at the Bevalac are described. The magnet has been specifically designed for maximum efficiency in power utilization and has replaced two DC powered magnets in the Bevalac switchyard. It will reduce energy usage by 747 MWh/yr, and it provides the capability of pulse-to-pulse switching in 0.7 s between two major beamline channels serving the nuclear science and radiotherapy programs at the Bevalac. A unique feature of this magnet is the core design, which utilizes an external structure that remains integral with the core laminations after assembly. The structure provides for both torsional and longitudinal rigidity of the core while also facilitating the precision assembly and compression of the core laminations without the use of special assembly fixtures. >
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