Supported by Science and Technology Major Project of Hubei Province (2021AFB001)Accelerator System of Wuhan Light Source Phase Ⅰ Project

The accelerator system of Wuhan Light Source (WHLS), a fourth-generation synchrotron radiation facility, its phase Ⅰ project consists of a low energy storage ring (1.5 GeV) and a full energy linac injector. Based on hybrid7BA lattice structure, the storage ring was designed as an 8cell, 500 mA and 1.5 GeV electron synchrotron, with circumference 180 m and nature emittance 222.8 pm·rad, which reaches soft Xray diffraction limit. At the middle of each standard cell, a 3.5 T super bend magnet was used to extend the photon energy to hard Xray region. A 3rd harmonic cavity was designed for bunch lengthening to keep sufficient lifetime and swapout injection scheme was chosen due to the small dynamic aperture. A full energy Sband LINAC, which is 6 meters lower than the storage ring, will be used as its injector. More details of WHLS phase Ⅰ project will be described in this paper.