At DESY synchrotron radiation emitted from electrons in the PETRA III storage ring (start user operation: 2010), and in the free-electron laser FLASH (start user operation: 2005) is used for fundamental and applied research. The 2nd generation storage ring DORIS III was shut down in October 2012 after 38 years of successful operation for users.
The European XFEL has been realised as a unique X-ray source (start user operation: 2017). Together with international partners, DESY constructied the heart of the X-ray laser - the superconducting accelerator. DESY operates the accelerator on behalf of the European XFEL GmbH.
