Thailand and Japan to develop ASEAN’s largest synchrotron facility in Rayong
The 3 GeV research facility will help scientists examine materials at atomic and molecular levels, supporting industries from EV batteries and semiconductors to medicine and agriculture. The story Thailand and Japan to develop ASEAN’s largest synchrotron facility in Rayong as seen on Thaiger News .
Thailand and Japan are collaborating to build what will be ASEAN's largest and most advanced synchrotron light source facility. Known as the Siam Photon Source-II, this 3 GeV research facility will be constructed in Rayong province's Wangchan Valley as part of the Eastern Economic Corridor of Innovation. The project aims to provide scientists with a powerful tool capable of examining materials down to the atomic and molecular level, using synchrotron light that spans wavelengths from infrared to X-rays.
Thailand plans to sign a loan agreement with Japan's International Cooperation Agency in November 2026, with full operations slated for July 2034. The synchrotron will feature a 321.3-meter-long storage ring and accommodate up to 22 beamlines. Its capabilities will significantly benefit various industries, including electric vehicles, semiconductors, medicine, agriculture, space technology, clean energy, environment, archaeology and forensics.
Construction of the main synchrotron and administrative buildings is expected to conclude in August 2031, with installation and testing occurring between August 2032 and April 2034. Once fully operational, the facility will replace Thailand's existing 1.2 GeV synchrotron in Nakhon Ratchasima, offering researchers enhanced research capabilities and advanced scientific infrastructure.
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