Summary of field quality of tps lattice magnets

A modern 3-GeV synchrotron radiation source under construction at NSRRC is named Taiwan Photon Source. Great quality of magnets is required to maintain the electron beam in the required orbit in the storage ring and the booster ring. The mechanical performance and the magnetic field of these magnets were fully inspected at NSRRC. The standard deviation of the integral field strength of 48 SR dipole magnets is better than 0.07 %. The integral fields, multipoles and center offsets of the 240 SR quadrupole and 168 SR sextupole magnets conform to strict specifications. The field character of a BR combined-func tion dipole magnet was analysed with a differential method; the standard deviation of the field strength of 54 BR dipole-magnet s is better than 0.15 %. The field quality of 36 BR pure quadrupole and 48 BR combined-function quadrupole magnets are acceptable to conform to the requirements of the booster ring. The field strength and multipole errors of 24 BR sextupole magnets were also examined. The detailed magnetic performance of the lattice magnets are discussed in this report.