Low level radio frequency control system for the european XFEL

Author

Jezynski, Tomasz ; Simrock, S.

Author_Institution

Tech. Univ. of Lodz

fYear

2006

fDate

22-24 June 2006

Firstpage

79

Lastpage

84

Abstract

The low-level radio frequency system (LLRF) for the superconducting cavities of the European X-FEL must provide exceptional stability of the accelerating RF field amplitude (0.01%) and phase (0.01 degrees) at a frequency of 1.3 GHz. These requirements must be achieved in pulsed operation mode with one klystron driving 32 cavities. It is thus necessary to design and build a modern LLRF control system, consisting of state of the art hardware and sophisticated control algorithms requiring high gain, low noise, fast and high resolution ADCs (up 16 bits, >100MHz), and high performance data processing using FPGAs and DSPs with low latency. A complete LLRF system must support more than 100 analogue input channels. This paper describes one possible architecture, which will be tested at DESY by the end of 2006

Keywords

accelerator RF systems; free electron lasers; frequency control; klystrons; 1.3 GHz; DESY; European X-FEL; control system; digital signal processor; field programmable gate arrays; high resolution analog-to-digital converter; klystron; low level radio frequency system; superconducting cavity; Acceleration; Algorithm design and analysis; Control systems; Hardware; Klystrons; Performance gain; Radio control; Radio frequency; Stability; Superconducting device noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Mixed Design of Integrated Circuits and System, 2006. MIXDES 2006. Proceedings of the International Conference

Conference_Location

Gdynia

Print_ISBN

83-922632-2-7

Type

conf

DOI

10.1109/MIXDES.2006.1706542

Filename

1706542