Contribution to a conference proceedings/Contribution to a book

PUBDB-2023-06002

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Concept and Design of an Extensible Middle-Layer Application Framework for Accelerator Operations and Development

Schütte, M. (Corresponding author)DESY* ; Georg, J.DESY* ; Grünhagen, A.DESY* ; Schlarb, H.DESY*

2023
JACoW Publishing Geneva, Switzerland
ISBN: 978-3-95450-238-7

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Please use a persistent id in citations: doi:10.18429/JACoW-ICALEPCS2023-MO2BCO02  doi:10.3204/PUBDB-2023-06002

Abstract: Data collection and analysis are becoming increasingly vital not only for the experiments conducted with particle accelerators but also for their operation, maintenance, and development. Due to lack of feasible alternatives, experts regularly resort to writing task-specific scripts to perform actions such as (event triggered or temporary) data collection, system failure detection and recovery, and even simple high-level feedbacks. Often, these scripts are not shared and are deemed to have little reuse value, giving them a short lifetime and causing redundant work. We report on a modular Python framework for constructing middle-layer applications from a library of parameterized functionality blocks (modules) by writing a simple configuration file in a human-oriented format. This encourages the creation of maintainable and reusable modules while offering an increasingly powerful and flexible platform that has few requirements to the user. A core engine instantiates the modules according to the configuration file, collects the required data from the control system and distributes it to the individual module instances for processing. Additionally, a publisher-subscriber messaging system is provided for inter-module communication. We discuss architecture & design choices, current state and future goals of the framework as well as real use-case examples from the European XFEL.

Keyword(s): Accelerator Physics ; Software ; framework ; controls ; FEL ; laser ; software

Note: "Workshops: 7 & 8 October 2023, conference: 9-13 October 2023"; Literaturangaben;

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Contributing Institute(s):

1. Strahlkontrollen (MSK)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)

Experiment(s):

1. Facility (machine) XFEL
2. Facility (machine) FLASH

Appears in the scientific report 2023

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