Speaker
Description
The NSLS-II has been operating for four years with two CESRb type SRF cavities powered by 300 kW klystron transmitters. As the operating current is raised from 375 mA operations today to the design value of 500mA, and additional insertion devices increase the energy loss per turn we will reach a limit in installed RF power by 2020. A new project to add a third SRF system to provide power for the additional synchrotron radiation losses has been started. A third niobium cavity which was part of the original project construction has been BCP processed at Cornell including a new N2 doping which has resulted in a record Qzero in vertical test. The processed cavity is being integrated with the industry produced cryomodule by the RF group in our clean room facilities at NSLS-II. A contract has been awarded for commercial production of a 310 kW transmitter and the liquid helium valve box and distribution piping. A description of the system design and project status will be described.