Title :
Phase compensated fibre-optic links for the LEP RF reference distribution
Author :
Peschardt, E. ; Sladen, J.P.H.
Author_Institution :
CERN, Geneva, Switzerland
Abstract :
The positioning of the RF accelerating stations at LEP (large collider) necessitates precise phase synchronization over many kilometers. The master RF frequency generator is situated in the main control room, together with associated equipment, and signal transmission to the RF stations is via 1.3-μm monomode fiber-optic links. The total estimated delay variations for the longest link is about 8 ns. A feedback system was developed to compensate for fiber-optic transmission delay variations. The design and testing of the system now installed at LEP are described
Keywords :
feedback; optical fibres; optical links; 1.3 micron; 8 ns; LEP; RF frequency generator; RF reference distribution; delay; design; feedback system; fiber-optic transmission delay variations; fibre-optic links; monomode optical fibre; phase compensation; phase synchronization; testing; Acceleration; Delay estimation; Feedback; Frequency synchronization; Optical fiber devices; Optical fiber testing; RF signals; Radio frequency; Signal generators; System testing;
Conference_Titel :
Particle Accelerator Conference, 1989. Accelerator Science and Technology., Proceedings of the 1989 IEEE
Conference_Location :
Chicago, IL
DOI :
10.1109/PAC.1989.72983
