Design and Integration of the Optical Reference Module at 1.3 GHz for FLASH and the European XFEL

Janas, Ewa; Sikora, Dominik; Sydlo, Cezary; Kownacki, Przemyslaw; Szewinski, Jaroslaw; Lamb, Thorsten; Czwalinna, Marie Kristin; Schulz, Sebastian; Schlarb, Holger; Titberidze, Mikheil; Felber, Matthias; Czuba, Krzysztof; Zummack, Falco

doi:10.18429/JACoW-IPAC2014-WEPRI115

Contribution to a conference proceedings/Contribution to a book

DESY-2014-03399

Design and Integration of the Optical Reference Module at 1.3 GHz for FLASH and the European XFEL

Janas, E. (Corresponding Author)Extern* ; Kownacki, P.Extern* ; Czwalinna, M. K.DESY* ; Felber, M.DESY* ; Lamb, T.DESY* ; Schlarb, H.DESY* ; Schulz, S.Extern* ; Sydlo, C.DESY* ; Titberidze, M.DESY* ; Zummack, F.DESY* ; Czuba, K. ; Sikora, D. ; Szewinski, J.

2014
JACoW, Geneva, Switzerland Geneva
ISBN: 978-3-95450-132-8

Proceedings of the 5th Int. Particle Accelerator Conf., IPAC2014, Dresden, Germany
5th International Particle Accelerator Conference, IPAC'14, Dresden, Germany, 15 Jun 2014 - 20 Jun 2014 Geneva : JACoW, Geneva, Switzerland 2768-2770 (2014) [10.18429/JACoW-IPAC2014-WEPRI115]

This record in other databases:

Please use a persistent id in citations: doi:10.18429/JACoW-IPAC2014-WEPRI115

Abstract: In this paper we present recent progress on the integration and implementation of the optical reference module (REFM-OPT) for the free-electron lasers FLASH and European XFEL. In order to achieve high energy stability and low arrival time jitter of the electron beam, the accelerator requires an accurate low-level RF (LLRF) field regulation and a sophisticated synchronization scheme for various devices along the facility. The REFM-OPT is a 19” module which is responsible for resynchronizing the 1.3 GHz reference signal for the LLRF distributed by coaxial cables to a phase-stable signal of the optical synchronization system. The module provides a 1.3 GHz output signal with low phase noise and high long-term stability. Several sub-components of the REFM-OPT designed specifically for this module are described in detail. The readout electronics of the high-precision Laser-to-RF phase detector are presented as well as the integration of this key component into the 19” module. Additionally, we focus on design solutions which assure phase stability and synchronization of the 1.3 GHz signal at several high power outputs of the module.

Keyword(s): Accelerator Physics ; 07 Accelerator Technology Main Systems ; T24 Timing and Synchronization

Contributing Institute(s):

Research Program(s):

Experiment(s):

Appears in the scientific report 2014

Database coverage:
OpenAccess