Title :
Variable-field permanent-magnet dipole
Author :
Barlow, David B. ; Kraus, R.H. ; Meyer, Ross E.
Author_Institution :
Los Alamos Nat. Lab., NM, USA
fDate :
7/1/1994 12:00:00 AM
Abstract :
A new concept for a variable-field permanent-magnet dipole (VFPMD) has been designed, fabricated, and tested. The VFPMD is a C-shaped sector magnet with iron poles separated by a large block of magnet material (SmCo). The central field can be continuously varied from 0.07 T to 0.3 T by moving an iron shunt closer or further away from the back of the magnet. The shunt is specially shaped to make the dependence of the dipole field on the shunt position as linear as possible. The dipole has a 2.8 cm-high by 8 cm-wide aperture with ~10 cm-long poles
Keywords :
beam handling equipment; electron accelerators; linear accelerators; permanent magnets; wigglers; 0.03 to 0.7 T; AFEL; C-shaped sector magnet; Fe; Fe shunt; Los Alamos Advanced Free-Electron Laser; SmCo; dipole field; variable-field permanent-magnet dipole; Apertures; Iron; Laboratories; Laser beams; Magnetic flux; Magnetic materials; Magnetic separation; Optical beams; Saturation magnetization; Testing;
Journal_Title :
Magnetics, IEEE Transactions on
