PPT Slide

A Common Coil Magnet System for VLHC

A Solution to Persistent Current Problem

May eliminate the High Energy Booster (HEB)

Inject in the iron dominated aperture at low field and

accelerate to medium field

Transfer to conductor dominated aperture at medium field and then accelerate to high field

Iron dominated aperture

Good at low field (0.1-1.5T)

Conductor dominated aperture

Good at high field (1.5-15T)

Compact size

A 4-in-1

magnet for

a 2-in-1

machine

High Field Aperture

Low Field Aperture

B(T)

Time

AP issues? Compare with the Low Field Design.

Injection at low field in iron dominated aperture should solve the large persistent current problem associated with Nb3Sn

Field profile with time