Title :
Eddy current effects in an opposite-field septum
Author :
Fan, K. ; Sakai, I. ; Arakaki, Y.
Author_Institution :
KEK, Tsukuba
Abstract :
A large aperture, thin-septum, high-field opposite-field septum magnet has been developed for the injection of 50 GeV main ring of J-PARC. Due to the eddy current generated in septum conductor, magnet yoke and magnet end plate, the field quality was degraded. In the paper, eddy current effects on the field distribution are discussed. Correction methods and experiment results are introduced.
Keywords :
accelerator magnets; eddy currents; particle beam injection; proton accelerators; J-PARC; correction methods; eddy current effects; electron volt energy 50 GeV; high-field opposite-field septum magnet; low energy injected beam; magnet end plate; magnet yoke; septum conductor; Apertures; Conductors; Coordinate measuring machines; Current measurement; Degradation; Eddy currents; Extraterrestrial measurements; Magnetic field measurement; Optical beams; Optical losses;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4440167
