SPS-II project: Status update

Siam Photon Source II (SPS-II) is a 4th-generation synchrotron light source set to be constructed in Thailand, aimed at becoming a major synchrotron facility for Southeast Asia. It is designed with a 3 GeV low-emittance electron storage ring, featuring a DTBA lattice and a circumference of 327.6 meters. Recently, the design and machine parameters have been carefully revised, with a particular focus on optimizing vacuum performance and the main RF frequency to ensure beam stability and reliable operation. In parallel with the design phase, significant progress has been made in developing key prototypes, including magnets, vacuum chambers, and girders, through collaboration with local Thai companies.