FRB3O03
SLAC, Menlo Park, California, USA
The LCLS-II FEL at the SLAC National Accelerator Laboratory, a significant addition to LCLS-I, is designed to dramatically decrease data acquisition time by providing high repetition rate over a broad energy range. The design consisting of a CW superconducting Linac with bunch repetition rates of up to one MHz and beam power of several hundred kilowatts requires major enhancements to the LCLS-I controls system. LCLS-II will retain the successful architecture based on EPICS while implementing additional technologies to meet the new requirements. These include a new LLRF system for the superconducting Linac, a new timing system to allow MHz operation, and new data acquisition electronics for the beam position monitors and other beam diagnostic systems. The high beam rate and power also necessitate faster beam abort mechanisms, requiring enhanced machine and personnel protection systems. In order to address the high speed processing and high throughput requirements of a number of systems, an ADC/FPGA/DAC-based system as a common platform for several applications is being developed. This paper presents an overview of the LCLS-II controls and discuss the status of the critical systems.
