TUNING OF THE INJECTOR SYSTEM TO MATCH POSSIBLE LATTICE UPGRADES AT DIAMOND LIGHT SOURCE

Studies of novel lattice upgrades for Diamond Light Source to achieve an increase in the number of insertion devices and/or a lower natural emittance are underway [1]. Such upgrades if carried out progressively would result in successive reductions in storage ring circumference. To maintain synchronous injection then requires the injector system to operate at various frequencies to match these changes. This paper describes the tests carried out with beam, to prove that the injector system of linac and full energy booster can be tuned over an extended frequency range. EFFECTS OF THE LATTICE UPGRADE Modification of the DBA lattice at Diamond Light Source to a Double DBA (DDBA) lattice is under consideration [1]. This would allow the introduction of an insertion device between two DBA achromats in any modified DDBA cell, and also bring about a reduction in storage ring emittance. The present design envisages a change in length, δl of a modified cell, leading to a new RF frequency fRF for N modified cells, given by