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arXiv · 0711.3217

The ATLAS High Level Trigger Region of Interest Builder

Robert Blair·John Dawson·Gary Drake·William Haberichter·James Schlereth·Jinlong Zhang·Maris Abolins·Yuri Ermoline·Bernard Pope
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Abstract

This article describes the design, testing and production of the ATLAS Region of Interest Builder (RoIB). This device acts as an interface between the Level 1 trigger and the high level trigger (HLT) farm for the ATLAS LHC detector. It distributes all of the level 1 data for a subset of events to a small number of (16 or less) individual commodity processors. These processors in turn provide this information to the HLT. This allows the HLT to use the level 1 information to narrow data requests to areas of the detector where level 1 has identified interesting objects.

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Robert Blair, John Dawson, Gary Drake, William Haberichter, James Schlereth, Jinlong Zhang, Maris Abolins, Yuri Ermoline, Bernard Pope. 2007-11-20. The ATLAS High Level Trigger Region of Interest Builder. https://doi.org/10.1088/1748-0221/3/04/p04001

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