Tests of High Gradient Superconducting Quadrupole Magnets for the Tevatron

Tests have been completed on three prototype magnets and two production magnets to be used for the Tevatron DO/BO low-β insertion. These cold iron, two shell quadrupoles are made of 36 strand Rutherford type NbTi superconducting cable. Magnet field gradients well in excess of the design 1.41 T/cm have been achieved at a transfer function of 0.291 T/cm/kA. Quench performance at 4.2 K and 3.7 K and magnetic multipole measurement data are presented and discussed.