Persistent current effects in BSCCO common coil dipoles

A series of one-meter long racetrack-shaped windings has been fabricated fr om BSCCO tape conductors obtained from four manufacturers. Two coils were b uilt from each conductor type and tested In the "common coil" dipole config uration in liquid helium. The effect of the remnant magnetization currents was determined by measuring the residual elipole and sextupole fields after cycling the magnets to progressively higher currents. Two coil sets have b een measured and the results are compared to those obtained from a Nb3Sn ri bbon magnet of the same geometry.