Commissioning of the ATLAS Experiment

TL;DR

This paper reports on the progress of commissioning the ATLAS experiment as of May 2008, detailing detector integration, cosmic data-taking, and trigger system development to prepare for physics data collection.

Contribution

It provides a comprehensive update on the integration and testing status of the ATLAS detector components and trigger systems during commissioning phases.

Findings

Successful cosmic commissioning of muon and inner detectors.

Calorimeters achieved near-full operation and integration.

High-level trigger infrastructure is under installation and testing.

Abstract

The status of the commissioning of the ATLAS experiment as of May 2008 is presented. The sub-detector integration in recent milestone weeks is described. Cosmic commissioning in milestone week M6 included simultaneous data-taking and combined track analysis of the muon detector and inner detector, as well as combined analysis of muon detector and muon trigger. The calorimeters have achieved near-full operation, and are integrated with the calorimeter trigger. The high-level-trigger infrastructure is being installed and algorithms tested in technical runs.