A New Implementation of the Region of Interest Strategy for the ATLAS Second Level Trigger

V. Boisvert; S. Armstrong; J. Baines; S. Brandt; M. Elsing; S. George; W. Li; A. G. Mello

A New Implementation of the Region of Interest Strategy for the ATLAS Second Level Trigger

V. Boisvert, S. Armstrong, J. Baines, S. Brandt, M. Elsing, S. George, W. Li, A. G. Mello

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Abstract

Among the many challenges presented by the future ATLAS detector at the LHC are the high data taking rate and volume and the derivation of a rapid trigger decision with limited resources. To address this challenge within the ATLAS second level trigger system, a Region-of-Interest mechanism has been adopted which dramatically reduces the relevant fiducial volume necessary to be readout and processed to small regions guided by the hardware-based first level trigger. Software has been developed to allow fast translation between arbitrary geometric regions and identifiers of small collections of the event data. This facilitates on-demand data retrieval and collection building. The system is optimized to minimize the amount of data transferred and unnecessary building of complex objects. Details of the design and implementation are presented along with preliminary performance results.

Original language	English
Publication status	Published - 13 Jun 2003
Event	Computing in High Energy and Nuclear Physics - La Jolla, California, United States Duration: 24 Mar 2003 → 28 Mar 2003

Conference

Conference	Computing in High Energy and Nuclear Physics
Country/Territory	United States
City	La Jolla, California
Period	24/03/03 → 28/03/03

Keywords

physics.comp-ph

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pdf

The ATLAS collaboration (External organisation)
Simon George (Participant)
5 Oct 1995 → …
Activity: Membership › Membership of research network

Cite this

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title = "A New Implementation of the Region of Interest Strategy for the ATLAS Second Level Trigger",

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T1 - A New Implementation of the Region of Interest Strategy for the ATLAS Second Level Trigger

AU - Boisvert, V.

AU - Armstrong, S.

AU - Baines, J.

AU - Brandt, S.

AU - Elsing, M.

AU - George, S.

AU - Li, W.

AU - G. Mello, A.

N1 - Talk from the 2003 Computing in High Energy and Nuclear Physics (CHEP03), La Jolla, Ca, USA, March 2003, 6 pages, LaTeX, 5 eps figures. PSN TUGT008

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N2 - Among the many challenges presented by the future ATLAS detector at the LHC are the high data taking rate and volume and the derivation of a rapid trigger decision with limited resources. To address this challenge within the ATLAS second level trigger system, a Region-of-Interest mechanism has been adopted which dramatically reduces the relevant fiducial volume necessary to be readout and processed to small regions guided by the hardware-based first level trigger. Software has been developed to allow fast translation between arbitrary geometric regions and identifiers of small collections of the event data. This facilitates on-demand data retrieval and collection building. The system is optimized to minimize the amount of data transferred and unnecessary building of complex objects. Details of the design and implementation are presented along with preliminary performance results.

AB - Among the many challenges presented by the future ATLAS detector at the LHC are the high data taking rate and volume and the derivation of a rapid trigger decision with limited resources. To address this challenge within the ATLAS second level trigger system, a Region-of-Interest mechanism has been adopted which dramatically reduces the relevant fiducial volume necessary to be readout and processed to small regions guided by the hardware-based first level trigger. Software has been developed to allow fast translation between arbitrary geometric regions and identifiers of small collections of the event data. This facilitates on-demand data retrieval and collection building. The system is optimized to minimize the amount of data transferred and unnecessary building of complex objects. Details of the design and implementation are presented along with preliminary performance results.

KW - physics.comp-ph

M3 - Paper

T2 - Computing in High Energy and Nuclear Physics

Y2 - 24 March 2003 through 28 March 2003

ER -

A New Implementation of the Region of Interest Strategy for the ATLAS Second Level Trigger

Abstract

Conference

Keywords

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The ATLAS collaboration (External organisation)

Cite this