The ATLAS Detector: Status and Results from Cosmic Rays

TL;DR

This paper reports on the status of the ATLAS detector at CERN, highlighting its readiness for physics discoveries through results from cosmic ray testing and initial beam data.

Contribution

It provides an update on the construction, functionality, and initial testing results of the ATLAS detector before collider operations.

Findings

Successful cosmic ray data collection demonstrating detector readiness

Subsystems are operational and calibrated for physics measurements

Preliminary results indicate preparedness for collision data analysis

Abstract

The ATLAS detector at the Large Hadron Collider, CERN has been under construction for more than a decade. It is now largely complete and functional. This paper will describe the state of the major subsystems of ATLAS. Results from the brief single beam running period in 2008 will be shown. In addition, results from a long period of cosmic ray running will be shown. These results show that ATLAS is prepared to make major new physics discoveries as soon as we get colliding beams in late 2009.