OPERATION OF SUPERCONDUCTING MAGNETS IN FERMILAB EXTRACTED BE.4MS

We discuss the design and layout of the refrigeration, transfer, and magnet systems. We also present data on heat leaks and beam losses. Dual Dipole The Fermilab has installed a pair of 30 in. superconducting dipole magnets in our external proton beam line 50 ft. downstream from the main ring extraction channel. The coils use a medium grade of Nb Ti supercon-ductor with a short-sample limit of 18.50 A at 27 KG field in the eao and a Conner to superconductor ratio o’i i. The coils were used in the first successful test magnet in the energy doubler program and built i