This idea had immediate applications in designing better focusing magnets for conventional accelerators, but was not applied to FFAG design until several decades later.
2.
The iron return yoke was a dodecagonal cylinder with two end-plates that left holes for a focusing magnet ( quadrupole ) of the LEP machine.
3.
Van den Meer had in the meantime developed the concept of " stochastic cooling ", in which particles, like anti-protons could be kept in a circular array, and their beam diverge reduced progressively sending signals to focusing magnets across the array.
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