DESIGN AND MEASUREMENT OF THE TRANSFER LINE MAGNETS FOR THE TAIWAN PHOTON SOURCE

For the transfer line of Taiwan Photon Source (TPS), the segment from the Linac to the booster (LTB) comprises one dipole magnet and eleven quadrupoles but that from the booster to the storage ring (BTS) comprises two dipole magnets and seven quadrupoles. The LTB dipole magnet provides for deflections 11 o from the Linac to the booster and 31 o from the Linac to the beam dumper, with two operating currents. The BTS quadrupole magnets include four 0.3 m and three 0.4 m magnets that have the same cross sections as the booster quadrupole magnet but different integral quadrupole field strengths; the cooling systems are redesigned from two circuits to four. The magnetic fields were simulated with software (Opera 2D and 3D); the optimum processes are discussed. The magnets were constructed by Danfysik, Scanditronix and a local company in Taiwan. This paper discusses the features, the design concept and the results of field measurements of these transfer-line magnets. MAGNETIC DESIGN AND SIMULATION Taiwan Photon Source is a third-generation accelerator for a light source designed to achieve great brilliance and small emittance [1]. The transfer-line magnets required for the operation of TPS are the LTB dipole magnet, LTB quadrupole magnets, BTS dipole magnets and BTS quadrupole magnets. LTB Dipole Magnet