Operation of the Diamond Light Source injector

The Diamond Light Source (DLS) injector consists of a 100 MeV pre-injector linac and a 3 GeV full energy booster. The injection system has been reliably providing beam to the storage ring since September 2006 in both multibunch and single bunch mode, at 5 Hz repetition rate. Single bunch and hybrid modes are being developed now for users later this year. Single bunch purity has been measured in the storage ring to be better than 0.1%. The timing system can be controlled to allow a wide range of filling patterns, including complete ring fill in both single and multibunch mode, and hybrid fills with individual single bunches placed in gaps between continuous bunch trains. Top-up operation is envisaged for user operation in the future, and trials are underway to ensure safe and efficient running in this mode.