This content is restricted to site members. If you are an existing user, please log in. New users may register below.Existing Users Log InUsername or EmailPassword Remember Me New User RegistrationChoose a Username*First Name*Last Name*Address 1*Address 2City*State*Zip*Country*Phone*Email**Required field Post navigation European XFEL accelerator reaches its design energyEconomic growth in the UK 1998 to 2017