Title :
Three-dimensional end effects in iron septum magnets
Author :
Ostiguy, J. -E ; Johnson, D.E.
Author_Institution :
Fermi Nat. Accel. Lab., Batavia, IL, USA
Abstract :
Among the technical difficulties encountered in designing an iron septum magnet, controlling the field quality at the longitudinal extremities of the field-free region is one of the most challenging. Without proper termination, flux jumping between the edge of the field-free region and the opposite pole piece results in a strong dipole kick and undesirable levels of higher order harmonics. The deleterious effects of the fringe field can be mitigated by reducing and channeling the leakage flux. We present 3D calculations and measurements performed on various end configurations for the Fermilab Main Injector iron septum magnets R&D program
Keywords :
accelerator magnets; proton accelerators; synchrotrons; 3D end effects; Fe septum magnets; Fermilab Main Injector iron septum magnets; end configurations; field quality; field-free region; flux jumping; fringe field; higher order harmonics; leakage flux channelling; leakage flux reduction; opposite pole piece; strong dipole kick; Extremities; Gaussian processes; Iron; Laboratories; Magnetic field measurement; Magnets; Performance evaluation; Permeability; Research and development; Shape;
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2934-1
DOI :
10.1109/PAC.1995.505218
