International Workshop on Accelerator Alignment

HEPS(High Energy Photon Source) is a proposed 5GeV third generation light source with 50pm emittance at IHEP.The alignment tolerance for a string of quadrupoles and sextupoles on a 5.4 meters girder is 30 micrometers. To achieve the high precision requirements, the vibrating wire alignment technique will be used to align several magnets installed on the long girder. The method is based on measurement of magnetic axis. This report will introduce the research work has been done.