Three-dimensional end effects in iron septum magnets

Author

Ostiguy, J. -E ; Johnson, D.E.

Author_Institution

Fermi Nat. Accel. Lab., Batavia, IL, USA

Volume

2

fYear

1995

fDate

1-5 May 1995

Firstpage

1349

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1995., Proceedings of the 1995

Conference_Location

Dallas, TX

Print_ISBN

0-7803-2934-1

Type

conf

DOI

10.1109/PAC.1995.505218

Filename

505218