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          Institute: MPI für Physik     Collection: YB 2016     Display Documents



ID: 716389.0, MPI für Physik / YB 2016
Performance of a First-Level Muon Trigger with High Momentum Resolution Based on the ATLAS MDT Chambers for HL-LHC
Authors:Gadow, P.; Kortner, O.; Kortner, S.; Kroha, H.; Müller, F.; Richter, R.
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:Highly selective first-level triggers are essential to exploit the full
physics potential of the ATLAS experiment at High-Luminosity LHC (HL-LHC). The
concept for a new muon trigger stage using the precision monitored drift tube
(MDT) chambers to significantly improve the selectivity of the first-level muon
trigger is presented. It is based on fast track reconstruction in all three
layers of the existing MDT chambers, made possible by an extension of the
first-level trigger latency to six microseconds and a new MDT read-out
electronics required for the higher overall trigger rates at the HL-LHC. Data
from $pp$-collisions at $\\sqrt{s} = 8\\,\\mathrm{TeV}$ is used to study the
minimal muon transverse momentum resolution that can be obtained using the MDT
precision chambers, and to estimate the resolution and efficiency of the
MDT-based trigger. A resolution of better than $4.1\\%$ is found in all sectors
under study. With this resolution, a first-level trigger with a threshold of
$18\\,\\mathrm{GeV}$ becomes fully efficient for muons with a transverse momentum
above $24\\,\\mathrm{GeV}$ in the barrel, and above $20\\,\\mathrm{GeV}$ in the
end-cap region.
Classification / Thesaurus:ATLAS
Comment of the Author/Creator:6 pages, 11 figures; conference proceedings for IEEE NSS & MIC conference, San Diego, 2015
Document Type:Conference-Paper
Communicated by:MPI für Physik
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2015-279
URL:http://inspirehep.net/search?p=find+eprint+1511.09...
URL:http://arXiv.org/abs/arxiv:1511.09210
URL:https://publications.mppmu.mpg.de/?action=search&m...
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