Quench performance and field quality of DX dipoles for RHIC

DX dipoles, with an aperture of 18 cm, are located on each side of the six intersection regions of RHIC. All DX dipoles were tested at 4.35 K for quench performance, and trained successfully to at least a 10% margin above the operating field (4.3 T at 6.6 kA). Field quality in these dipoles was measured at room temperature and at 4.35 K using a rotating coil system. The measured harmonics were corrected for offsets of the measuring coil from the magnetic axis, determined by a variety of techniques. All harmonics were found to be within acceptable limits.