ICALEPCS2013 - List of Authors (Ohm, C.)

Paper

Title

Page

An Upgraded ATLAS Central Trigger for 2015 LHC Luminosities

1388

C. Ohm
CERN, Geneva, Switzerland

The LHC collides protons at a rate of ~40MHz and each collision produces ~1.5MB of data from the ATLAS detector (~60TB of data per second). The ATLAS trigger system reduces the input rate to a more reasonable storage rate of about 400Hz. The Level1 trigger reduces the input rate to ~100kHz with a decision latency of ~2.5us and is responsible for initiating the readout of data from all the ATLAS subdetectors. It is primarily composed of the Calorimeter Trigger, Muon Trigger, and the Central Trigger Processor (CTP). The CTP collects trigger information from all Level1 systems and produces the Level--1 trigger decision. The LHC has now shutdown for upgrades and will return in 2015 with an increased luminosity and a center of mass energy of 14TeV. With higher luminosities, the number and complexity of Level1 triggers will increase in order to satisfy the physics goals of ATLAS while keeping the total Level1 rates at or below 100kHz. In this talk we will discuss the current Central Trigger Processor, the justification for its upgrade, including the plans to satisfy the requirements of the 2015 physics run at the LHC.
The abstract is submitted on behalf of the ATLAS Collaboration. The name of the presenter will be chosen by the collaboration and communicated upon acceptance of the abstract.

Slides THCOBB01 [10.206 MB]

Paper	Title	Page
THCOBB01	An Upgraded ATLAS Central Trigger for 2015 LHC Luminosities	1388
	C. Ohm CERN, Geneva, Switzerland
	The LHC collides protons at a rate of ~40MHz and each collision produces ~1.5MB of data from the ATLAS detector (~60TB of data per second). The ATLAS trigger system reduces the input rate to a more reasonable storage rate of about 400Hz. The Level1 trigger reduces the input rate to ~100kHz with a decision latency of ~2.5us and is responsible for initiating the readout of data from all the ATLAS subdetectors. It is primarily composed of the Calorimeter Trigger, Muon Trigger, and the Central Trigger Processor (CTP). The CTP collects trigger information from all Level1 systems and produces the Level--1 trigger decision. The LHC has now shutdown for upgrades and will return in 2015 with an increased luminosity and a center of mass energy of 14TeV. With higher luminosities, the number and complexity of Level1 triggers will increase in order to satisfy the physics goals of ATLAS while keeping the total Level1 rates at or below 100kHz. In this talk we will discuss the current Central Trigger Processor, the justification for its upgrade, including the plans to satisfy the requirements of the 2015 physics run at the LHC. The abstract is submitted on behalf of the ATLAS Collaboration. The name of the presenter will be chosen by the collaboration and communicated upon acceptance of the abstract.
	Slides THCOBB01 [10.206 MB]