Elastic Cross-Section and Luminosity Measurement in ATLAS at LHC
Ilias Efthymiopoulos (for the ATLAS Collaboration)
TL;DR
This paper discusses the design, implementation, and expected performance of ultra-small-angle detectors in ATLAS for measuring LHC luminosity through elastic scattering rate analysis.
Contribution
It introduces a novel detector setup at 240m for absolute luminosity measurement using elastic scattering in the Coulomb Nuclear Interference region.
Findings
Design of ultra-small-angle detectors for LHC luminosity measurement
Expected performance metrics of the detector system
Discussion of challenges in measurement accuracy
Abstract
Recently the ATLAS experiment was complemented with a set of ultra-small-angle detectors located in ``Roman Pot'' inserts at 240m on either side of the interaction point, aiming at the absolute determination of the LHC luminosity by measuring the elastic scattering rate at the Coulomb Nuclear Interference region. Details of the proposed measurement the detector construction and the expected performance as well as the challenges involved are discussed here.
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Taxonomy
TopicsParticle Detector Development and Performance · Particle physics theoretical and experimental studies · High-Energy Particle Collisions Research