Photon Factory (PF), KEK

Photon Factory2

The Photon Factory is a synchrotron light source facility, as a part of the High Energy Accelerator Research Organization (KEK), Japan. The Photon Factory provides one of the four quantum beams (photons, neutrons, muons and positrons) for the Institute of Materials Structure Science (IMSS), which reveal atomic-level structures and electronic structures of all the materials, including living systems.
The Photon Factory has two light source accelerators. The PF ring (2.5 GeV) has been operated since 1982. This is the first dedicated synchrotron light source in Japan, which supply X-rays. Several improvements of accelerator have been made and resulted in a high-brilliant light source. The PF-AR (advanced ring) is a unique light source, that is, high-intensity pulsed synchrotron source which is effective for time resolved experiments. There are around 40 experimental stations at the PF and the PF-AR.

  • Operated in 1982 as the first X-ray light source in Japan.
  • In 1997, joined to the Institute of Materials Structure Science (IMSS), which provides unique research environment with combination of multi quantum beams.

Latest News From Photon Factory


Japan, Tsukuba


Energy: 2.5-GeV (PF)/ 6.5-GeV (PF-AR)
Current: 450 mA (PF) / 60 mA (PF-AR)
Number of Beamlines: 45

Call for proposals
The due dates of the proposal submission are set twice a year (May and November) except for U, P and S1 categories (accepting at any time). Photon Factory welcomes an application of research proposals from all over the world. More information on the Photon Factory website.