| RT2007 PS2C007 | |
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| Title | Overview of the High Level Trigger Steering and Selection for the ATLAS experiment at the LHC | Submitted | 25-JAN-07 17:22 (UTC -06:00) |
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| Classification | Trigger and Data Acquisition | Modified | 11-APR-07 14:53 (UTC -05:00) |
| Session | PS2C | Presentation | Poster |
| Presenter | Tomasz Bold | Paper ID | PS2C007 |
| Paper PDF | Download | ||
| Author(s) | Tomasz Bold (UCI, Irvine), Andreas Hoecker, Valeria Perez-Reale, Joerg Steltzer (CERN/ATLAS, Geneva 23), Johannes Haller (DESY, Hamburg), Till Felix Eifert, Xin Wu (DPNC, Geneve), Gordon Fischer, Christiane Risler, Martin zur Nedden (Humboldt University Berlin, Berlin), Nicolas Joanny Pierre Berger (IN2P3-LAPP, Annecy-le-Vieux), Carlo Schiavi (INFN Genova, Genova), Jiri Masik (Manchester University, Manchester), Simon George (Royal Holloway, University of London, Surrey) | ||
| Abstract | The ATLAS experiment at the Large Hadron Collider (LHC) will face the challenge of efficiently selecting interesting candidate events in pp collisions at 14 TeV center-of-mass energy, whilst rejecting the enormous number of background events. The High-Level Trigger (HLT = second level trigger and Event Filter), which is a software based trigger will need to reduce the level-1 output rate of ~75 kHz to ~200 Hz written out to mass storage. In this paper an overview of the Steering mechanism of the HLT is given. The Steering software is the core of the HLT selection processes responsible for the trigger algorithms scheduling and for the global event trigger decision evaluation. The concept of stepwise and seeded selection strategy implemented by the Steering will be presented. Integration of large number of trigger menus and sophisticated physics selection strategies will also be discussed. The electron and photon menus will be described to demonstrate that the trigger is well adapted for the physics program at the LHC. | ||
| Word Count: 164 Character Count: 1023 | |||
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| File Name | File Type | Platform | Uploaded |
|---|---|---|---|
| PS2C007.PDF | Portable Document Format | Intel PC | 02-MAY-07 16:22 (UTC -05:00) |
| PS2C007.PDF | Portable Document Format | Intel PC | 03-MAY-07 10:13 (UTC -05:00) |
| ps2c007_talk.ppt | Transparencies | Intel PC | 03-MAY-07 10:13 (UTC -05:00) |
| Please contact the RT2007 Database Administrator with questions, problems, and/or suggestions. | 23-FEB-09 15:47 (UTC -06:00) |
| SPMS Author: Matthew Arena — Fermi National Accelerator Laboratory | SPMS Version 7.2 |