Performance of the new master oscillator and phase reference system at FLASH

Author

Simrock, S. ; Felber, M. ; Hoffmann, M. ; Lorbeer, B. ; Ludwig, F. ; Weddig, H.C. ; Czuba, K.

Author_Institution

DESY, Hamburg

fYear

2007

fDate

25-29 June 2007

Firstpage

188

Lastpage

190

Abstract

The master oscillator (MO) and phase reference system at FLASH must provide several RF reference frequencies to widely spread locations with low phase noise and small long term phase drifts. The phase noise requirement of the 1300 MHz reference is of the order of 0.1 deg. while the short and medium term phase stability are of of the order of 0.1 deg. and 1 deg. respectively. The frequency distribution system employs a temperature stabilized coaxial line for RF power distribution and a fiber optic system for the monitoring of phase drifts. Presented are the the concept, design and performance measured in the accelerator environment.

Keywords

accelerator RF systems; beam handling equipment; particle accelerator accessories; FLASH accelerator; RF power distribution; fiber optic system; frequency distribution system; master oscillator system; phase reference system; Coaxial cables; Control systems; Optical fiber cables; Optical fibers; Oscillators; Phase noise; Power cables; Radio frequency; Stability; Temperature distribution;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2007. PAC. IEEE

Conference_Location

Albuquerque, NM

Print_ISBN

978-1-4244-0916-7

Type

conf

DOI

10.1109/PAC.2007.4440154

Filename

4440154