Abstract
The magnet design and fabrication technology for the AHF 50 GeV synchrotron must be of sufficiently high quality to provide a dynamic aperture that does not result in unnecessary beam losses. Tracking studies indicate that the dynamic aperture is smaller than the physical aperture for some sets of systematic and random magnetic field errors in the quadrupoles. Magnet measurements of different quadrupole magnet designs have been analyzed to determine a representative set of systematic and random magnetic field errors that can be manufactured in industry and provide a dynamic aperture larger that the physical aperture. A 2D‐error analysis was performed for different quadrupole magnet designs to ascertain the effect of magnet assembly tolerances and errors on the magnetic field harmonics. The analysis indicated that many systematic harmonics were correlated and that specific assembly tolerances and errors (coil placement tolerances and proximity to pole tip, half‐core and quadrant assembly tolerances) result...
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