Contribution to a conference proceedings/Contribution to a book

PUBDB-2021-04890

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Subsystem Level Data Acquisition for the Optical Synchronization System at European XFEL

Schütte, M. (Corresponding author)DESY* ; Eichler, A.XFEL.EU*DESY* ; Lamb, T.DESY* ; Rybnikov, V.DESY* ; Schlarb, H.DESY* ; Wilksen, T.DESY*

2021
JACoW Publishing, Geneva, Switzerland

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Please use a persistent id in citations: doi:10.18429/JACOW-IPAC2021-TUPAB291  doi:10.3204/PUBDB-2021-04890

Abstract: The optical synchronization system for the European X-Ray Free-Electron Laser provides sub-10 femtosecond timing precision * for the accelerator subsystems and experiments. This is achieved by phase locking a mode-locked laser oscillator to the main RF reference and distributing the optical pulse train carrying the time information via actively propagation-time stabilized optical fibers to multiple end-stations. Making up roughly one percent of the entire European XFEL, it is the first subsystem to receive a large-scale data acquisition system [2] for storing not just hand-selected information, but in fact all diagnostic, monitoring, and configuration data relevant to the optical synchronization available from the distributed control system infrastructure. A minimum of 100 TB per year may be stored in a persistent archive for long-term health monitoring and data mining whereas excess data is stored in a short-term ring buffer for high-resolution fault analysis and feature extraction algorithm development. This paper describes scale, challenges and first experiences from the optical synchronization data acquisition system.

Keyword(s): Accelerator Physics ; MC6: Beam Instrumentation, Controls, Feedback and Operational Aspects

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Contributing Institute(s):

1. Strahlkontrollen (MSK)
2. Beschleunigerkontrollen (FLASH/XFEL) (MCS 4)
3. Technol. zukünft. Teilchenph. Experim. (FTX)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)
2. HIDSS-0002 - DASHH: Data Science in Hamburg - Helmholtz Graduate School for the Structure of Matter (2019_IVF-HIDSS-0002) (2019_IVF-HIDSS-0002)

Experiment(s):

1. Facility (machine) XFEL

Appears in the scientific report 2021

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