2015•JACOWOpen access

Developments and Performance of the LLRF System of the S-Band FERMI Linac

Alessandro Fabris, Federico Gelmetti, M. Milloch, Mauro Predonzani

Abstract

The requirements on beam quality on the FERMI Free Electron Laser (FEL) linac impose challenging specifications on the stability of the RF fields that can only be met by using high reliable and high performance state of the art LLRF systems. The system installed in FERMI has met these requirements and is routinely operational for the machine on a 24/7 basis. The completion of the deployment of the LLRF units in 2015 increases the capabilities of the system, adding further measurement channels and monitoring, and allowing new functionalities. This paper provides an overview of the results achieved with the LLRF system of FERMI and an outlook of the further developments that are being implemented or planned.

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Key concepts: Linear particle accelerator, Fermi Gamma-ray Space Telescope, Physics, Optics, Beam (structure), Astrophysics