27 September 2004 to 1 October 2004
Interlaken, Switzerland
Europe/Zurich timezone

Conditions Databases: the interfaces between the different ATLAS systems

30 Sep 2004, 10:00
1h
Coffee (Interlaken, Switzerland)

Coffee

Interlaken, Switzerland

Board: 25
poster Track 3 - Core Software Poster Session 3

Speaker

D. KLOSE (Universidade de Lisboa, Portugal)

Description

Conditions Databases are beginning to be widely used in the ATLAS experiment. Conditions data are time-varying data describing the state of the detector used to reconstruct the event data. This includes all sorts of slowly evolving data like detector alignment, calibration, monitoring and data from Detector Control System (DCS). In this paper we'll present the interfaces between the ConditionsDB and the DCS, Trigger and Data Acquisition (TDAQ)and offline control framework (Athena). In the DCS case, a PVSS API Manager was developed based on the C++ interface for the ConditionsDB. The Manager links to a selection of datapoints and stores any value change in the ConditionsDB. The structure associated to each datapoint is mapped to a table that reflects this structure and is stored in the database. The ConditionsDB Interface to the TDAQ (CDI) is a service provided by the Online Software that acts as an intermediary between TDAQ producers and consumers of conditions data. CDI provides the pathway to the ConditionsDB information regarding the present or past condition of the detector and trigger system as well as all the operational and monitoring data. It will provide the link between the Information Service (IS) and the ConditionsDB Conditions database integration into the ATLAS Athena framework s also described, including connections to Athena's transient interval-of-validity management, conversion services to support conditions data I/O into Athena transient stores, and mechanisms by which the conditions databas may be used for timestamp-mediated access to data stored in other technologies such as NOVA and POOL.

Primary authors

A. Amorim (FACULTY OF SCIENCES OF THE UNIVERSITY OF LISBON) A. Kazarov (Petersburg Nuclear Physics Institute (PNPI)) A. Perus (Laboratoire de l''Accelerateur Lineaire (LAL) (IN2P3) (LAL)Universite de Paris-Sud (ParisXI)) A. Schaffer (Laboratoire de l''Accelerateur Lineaire (LAL) (IN2P3) (LAL)Universite de Paris-Sud (ParisXI)) D. Burckhart-Chromek (CERN) D. KLOSE (Universidade de Lisboa, Portugal) D. Liko (CERN) D. Malon (ANL) E. Badescu (Institute of Atomic PhysicsNational Institute for Physics and Nuclear Engineering (IFIN-HH)) I. Soloviev (Petersburg Nuclear Physics Institute (PNPI)) J. Cook (CERN) J. Flammer (CERN) L. Mapelli (CERN) L. Pedro (FACULTY OF SCIENCES OF THE UNIVERSITY OF LISBON) M. Caprini (Institute of Atomic PhysicsNational Institute for Physics and Nuclear Engineering (IFIN-HH)) M. Dobson (CERN) M. Mineev (Joint Institute for Nuclear Research (JINR)) N. Barros (FACULTY OF SCIENCES OF THE UNIVERSITY OF LISBON) R. Hawkings (CERN) R. Jones (CERN, Geneva, Switzerland) S. Kolos (Petersburg Nuclear Physics Institute (PNPI)) T. Franco (FACULTY OF SCIENCES OF THE UNIVERSITY OF LISBON) V. Kotov (Joint Institute for Nuclear Research (JINR)) Y. Alexandrov (P.N. Lebedev Institute of Physics (FIAN)Russian Academy of Sciences) Y. Ryabov (High Energy Physics Division (HEPD)Theory DivisionPetersburg Nuclear Physics Institute (PNPI))

Presentation Materials