Trigger logic of the ATLAS First Level Muon Trigger

A Demonstrator for the ATLAS Level-1 Muon to Central Trigger Processor Interface (MUCTPI)

The Level-1 Muon Trigger Interface (MUCTPI) to the Central Trigger Processor (CTP) receives trigger information from the detector-specific logic of the muon trigger. This information contains up to two muon-track candidates per sector. The MUCTPI combines the information of all sectors and calculates total multiplicity values for each of six programmable pT thresholds. It avoids double counting...

5 The first - level trigger of ATLAS

Due to the huge interaction rates and the tough experimental environment of pp collisions at a centre-of-mass energy √ s = 14 TeV and luminosities of up to 1034cm−2s−1, one of the experimental challenges at the LHC is the triggering of interesting events. In the ATLAS experiment a three-level trigger system is foreseen for this purpose. The first-level trigger is implemented in custom hardware ...

A Highly Selective First-Level Muon Trigger With MDT Chamber Data for ATLAS at HL-LHC

Highly selective triggers are essential for the physics programme of the ATLAS experiment at HL-LHC where the instantaneous luminosity will be about an order of magnitude larger than the LHC instantaneous luminosity in Run 1. The first level muon trigger rate is dominated by low momentum muons below the nominal trigger threshold due to the moderate momentum resolution of the Resistive Plate and...

Sector Logic FPGA demonstrator simulation , implementation and tests

DRAFT This document has not been approved and may contain factual errors. Abstract Abstract here. To change document date, double click on the date above. Sector Logic FPGA demonstrator simulation, implementation and tests ATL-T/DAQ-xxx-00 ATLAS Muon 22 May 2000 2 1 Introduction Document History 1 Introduction The first level muon trigger for the barrel in ATLAS is based on fast geometric coinc...

1 Test Beam Results on the Atlas First - Level Endcap Muon Trigger System