Improvements in Iron Dominated Magnets

• Data from

Bruce Brown, FNAL. He claims that the main injector dipoles have shown that in iron dominated magnets now one can go to field as low as to 0.04 T (rather than 0.1 T), as the low field hysteresis errors are significantly reduced.

• AP issues?

Old main ring dipole

New main injector dipole

(~8 units at 1”)

Sextupole Hysteresis

Previous slide

Next slide

Back to first slide

View graphic version