The Photon Factory is an accelerator-based light source facility, as a part of the High Energy Accelerator Research Organization (KEK) Japan. The Photon Factory operates two storage rings; the 2.5-GeV PF Ring and the 6.5-GeV PF Advanced Ring (PF-AR). The Photon Factory supplies brilliant X-rays and VUV light, which provide the means to understand the function of materials and life.
When charged particles move in a circular orbit at speeds close to the speed of light, photons are emitted in the forward direction. This radiation is called as synchrotron radiation (SR). The properties of the synchrotron radiation are;