Design consideration for Tohoku light source storage ring equipped with UV free electron laser

An integrated photon source facility has been planed at Laboratory of Nuclear Science, Tohoku University. A 1.5 GeV main ring designed as a synchrotron light source of VUV and soft X-ray region contains straight sections with very low beta function to accept high field superconducting wigglers for X-ray. One of two 8-m long straight sections is allocated for storage ring free electron laser (SRFEL) in the UV region. The beam property in the ring is evaluated and then the beam quality for the SRFEL oscillation is also discussed including possibility of coherent higher harmonic generation by showing results of numerical simulation.