The ELETTRA transfer line magnets

ELETTRA´s transfer line from the linac to the storage ring has a length of 103 m and is made of 30 quadrupoles, 5 bending magnets with a deflection angle of 31.4 degrees , bending magnets with 15.7 degrees deflection, and 34 steerers. The aperture tolerance of each magnet is +or-25 mm. The C-shaped bending magnets are running at 2 GeV with a flux density of 1.5 T. With a gap length of 100 mm it is possible to reach a field homogeneity of <+or-1* 10/sup -3/ over a range of +or-30 mm. With a magnetic length of 0.5 m, the maximum gradient of the quadrupole has to be 23 T/m. The pole shape was calculated to get a homogeneity of the gradient <1* 10/sup -3/ over a radius of 20 mm. The steerer magnets with a length of 0.2 m are C-shaped; a magnetic induction of 0.1 T produces a kick of 3 mrad at 2 GeV.<>