The Siam Photon Source II (SPS-II) is Thailand’s next-generation 3 GeV synchrotron light source, designed to deliver high-brightness radiation for scientific and industrial use. Its storage ring, comprising 14 Double Triple Bend Achromat (DTBA) cells and targeting a natu-ral beam emittance below 1 nm·rad, requires numerous high-precision magnets with strict mechanical and mag-netic specifications. This work presents the development of magnet prototypes, covering the full design process including magnet type and material selection, yoke and pole geometry optimization, and magnetic field simulation with OPERA 3D considering saturation and permeability. Mechanical design involved core and coil material selec-tion as well as structural, thermal, and vibrational analyses using AutoCAD, SolidWorks, and ANSYS to ensure mechanical integrity. Prototypes were fabricated using high-precision machining and vacuum pressure impregna-tion (VPI) for coil insulation, then tested for dimensional accuracy and magnetic field performance. This marks Thailand’s first domestically developed magnet prototype, realized through collaboration with local industry, laying a solid foundation for the SPS-II project.
Prawanta et al. (Thu,) studied this question.