The following email has been sent to GARELLI, Nicoletta:

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Dear Nicoletta Garelli,

The submission of your abstract has been successfully processed.

Abstract submitted: https://indico.cern.ch/event/192695/call-for- abstracts/my-abstracts.

Status of your abstract: https://indico.cern.ch/event/192695/call- for-abstracts/228/.

See below a detailed summary of your submitted abstract:

Conference: Tipp 2014 - Third International Conference on Technology and Instrumentation in Particle Physics

Submitted by: GARELLI, Nicoletta

Submitted on: 13 February 2014 14:01

Title: Topology in the future ATLAS Level-1 Trigger

Abstract content ATLAS is an experiment on the Large Hadron Collider (LHC), located at the European Organization for Nuclear Research (CERN) in Switzerland. By 2015 the LHC instantaneous luminosity will be increased from $10^{34}$ up to $3\cdot10^{34}$ cm$^{-2}$ s${-1}$. This places stringent operational and physical requirements on the ATLAS Trigger in order to reduce the 40MHz collision rate to a manageable event storage rate of 1kHz while at the same time, selecting those events that contain interesting physics events. The Level-1 Trigger is the first rate-reducing step in the ATLAS Trigger, with an output rate of 100kHz and decision latency of less than $2.5{\mu s}$. It is composed of the Calorimeter Trigger, the Muon Trigger, and the Central Trigger Processor (CTP). In 2014, there will be a new electronics module: the Topological Processor (L1Topo). The L1Topo will make it possible, for the first time, to use detailed information from subdetectors in a single Level-1 module. This allows the determination of angles between jets and/or leptons, or even more complex observables as the invariant mass. This requires L1Topo to receive on a single module a total bandwidth of about $1Tb/s$ and process the data within 100 ns. In order to provide this new information to the L1Topo, L1Calo Common Merging Modules (CMX) are upgraded and for the L1Muon system a specific interface MUCTPI2L1topo has been design and built. The CTP will be upgraded as well to accept a larger number of trigger inputs. The talk focuses on the relevant upgrades of the Level-1 trigger with focus on the high density design characteristic of L1Topo.

Summary

Primary Authors: GARELLI, Nicoletta (SLAC National Accelerator Laboratory (US)) nicoletta.garelli@cern.ch Dr. SALVATORE, Fabrizio (University of Sussex (GB)) p.fabrizio.salvatore@googlemail.com

Co-authors:

Abstract presenters: GARELLI, Nicoletta

Track classification: Data-processing: 3c) Embedded software

Presentation type: Oral

Comments: This abstract is submitted on behalf of the ATLAS TDAQ collaboration and the presenter will be indicated by the ATLAS speakers committee as soon as we receive information about its status.