FUTURE LIGHT SOURCES: INTEGRATION OF LASERS, FELS AND ACCELERATORS AT 4GLS

GLS is a novel next generation proposal for a UK national light source to be sited at Daresbury Laboratory, based on a superconducting energy recovery linac (ERL) with both high average flux photon sources (undulators and bending magnets) and three high peak brightness free electron lasers. Key features are a high gain, seeded FEL amplifier to generate XUV radiation and the prospect of advanced research arising from unique combinations of sources with femtosecond pulse structure. The conceptual design is now completed and a CDR recently published (1). The 4GLS concept will be summarised, highlighting how the significant design challenges have been addressed, and the project status and plans explained.