Readiness of the ATLAS Experiment for First Data

TL;DR

This paper reports on the status and performance of the ATLAS detector during its commissioning phase before the first data collection at the LHC, highlighting progress made in detector readiness.

Contribution

It provides an update on the ATLAS detector's commissioning status and performance results prior to initial data taking at the LHC.

Findings

Detector commissioning is ongoing with initial performance results.

The detector has successfully recorded noise, cosmic muons, and beam background events.

The ATLAS detector is progressing towards readiness for first data collection.

Abstract

The ATLAS detector is one of the experiments at the LHC that will detect high-energy proton collisions at 14 TeV. The commissioning of the detector has started already in 2005 in parallel to the detector installation and is still in progress. The data taken so far corresponds to noise runs, cosmic muon events and beam background events from single beam in September 2008. We present the current status of the detector and performance results obtained during commissioning.