RF reference distribution using fibre-optic links for KEKB accelerator

Author

Naito, T. ; Ebihara, K. ; Suetake, M. ; Ezura, E.

Author_Institution

KEK, Tsukuba, Japan

Volume

2

fYear

2001

fDate

2001

Firstpage

791

Abstract

The KEKB accelerator is a 3 km circumference double-ring collider which has six RF accelerating stations and will have two station for crab cavities. Each station is 800 in from the other. A stable RF phase reference is necessary for stable RF cavity operation. Coaxial cables with phase locked loops are used for the present system. A more stable RF phase reference is required for the crab cavity luminosity improvement project. An RF phase distribution system using single-mode fiberoptic links has been tested for improvement of the phase stability. The system uses a phase stabilized optical fiber and a phase-locked loop circuit with a wavelength division multiplexed device (WDM). This paper describes the circuit and its performance

Keywords

accelerator RF systems; colliding beam accelerators; electron accelerators; optical fibre communication; storage rings; KEKB accelerator; RF accelerating stations; RF phase distribution system; crab cavities; double-ring collider; phase stabilized optical fiber; phase-locked loop circuit; single-mode fiber-optic links; stable RF cavity operation; stable RF phase reference; wavelength division multiplexed device; Acceleration; Circuits; Coaxial cables; Optical fiber cables; Optical fiber devices; Optical fiber testing; Optical fibers; Phase locked loops; Radio frequency; Wavelength division multiplexing;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001

Conference_Location

Chicago, IL

Print_ISBN

0-7803-7191-7

Type

conf

DOI

10.1109/PAC.2001.986476

Filename

986476