Magnetic measurement test results of B&W 1 m quadrupole magnets

This report summarizes the magnetic measurement test results on the QSH series of collider quadrupole superconducting magnets. There were four quadrupole magnets built in the QSH series. These magnets had a 40 mm aperture and were approximately 1.2 m in length. Test results showed that the measured transfer function was within 0.3% of the design value at operating current and temperature and remained linear to within 0.3% from 656 A to 6714 A. In addition, all multipoles were well within the CQM system specification with the exception of b5. The origin of the large b5 term and the anomalous current dependence of the transfer function are briefly discussed.<
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