Nov 4 – 8, 2019
Adelaide Convention Centre
Australia/Adelaide timezone

Data-centric Graphical User Interface of the ATLAS EventIndex Service

Nov 7, 2019, 3:30 PM
Hall F (Adelaide Convention Centre)

Hall F

Adelaide Convention Centre

Poster Track 4 – Data Organisation, Management and Access Posters


Julius Hrivnac (Centre National de la Recherche Scientifique (FR))


ATLAS EventIndex Service keeps references to all real and simulated ATLAS events. Hadoop Mapfiles and HBase tables are used to store the Event Index data, a subset of data is also stored in the Oracle database. Several user interfaces are currently used to access and search the data. From the simple command line interface, through programmatical API to sophisticated Graphical Web Services. The presentation will describe the most recent, highly interactive Web Service. It provides a dynamic graph-like overview of all available data and data collections. Data are shown together with their relations, ownership, containment or overlaps. Each data entity then gives users a set of actions which are available for the referenced data. Some actions are provided directly by the Event Index system, others are interfaces to various ATLAS services. In many cases, specialised views are offered for detailed data inspection, like several kinds of histograms or Venn diagrams.
The presentation will document the current status of the service, its possibilities and performance. The future system evolution as an front-end to the new Event Index Architecture based on the Apache Phoenix will be also described as well as possible extension to more general framework for giving a new, more intuitive access to all experiment data.

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Primary authors

Julius Hrivnac (Centre National de la Recherche Scientifique (FR)) Evgeny Alexandrov (Joint Institute for Nuclear Research (RU)) Igor Alexandrov (Joint Institute for Nuclear Research (RU)) Zbigniew Baranowski (CERN) Dario Barberis (Università e INFN Genova (IT)) Gancho Dimitrov (CERN) Alvaro Fernandez Casani (Univ. of Valencia and CSIC (ES)) Elizabeth Gallas (University of Oxford (GB)) Carlos García Montoro (IFIC) Santiago Gonzalez De La Hoz (Univ. of Valencia and CSIC (ES)) Andrei Kazymov (Joint Institute for Nuclear Research (RU)) Mikhail Mineev (Joint Institute for Nuclear Research (RU)) Fedor Prokoshin (Joint Institute for Nuclear Research (RU)) Grigori Rybkin (Centre National de la Recherche Scientifique (FR)) Javier Sanchez (Universidad de Valencia (ES)) Jose Salt (Instituto de Fisica Corpuscular (IFIC) - Universidad de Valencia) Miguel Villaplana (Università degli Studi e INFN Milano (IT))

Presentation materials