ATLAS Great Lakes Tier-2 Computing and Muon Calibration Center Commissioning

TL;DR

The paper describes the commissioning and operational status of the ATLAS Great Lakes Tier-2 computing center and its Muon Calibration Center, highlighting their capabilities and initial results during early LHC runs.

Contribution

It presents the setup, commissioning, and initial performance of the ATLAS Great Lakes Tier-2 computing and calibration centers, including their role in muon calibration during early LHC data taking.

Findings

Tier-2 center became fully operational in September 2006

Muon Calibration Center processed large data streams with 24-hour turnaround

Prepared for first LHC beam collisions in 2009

Abstract

Large-scale computing in ATLAS is based on a grid-linked system of tiered computing centers. The ATLAS Great Lakes Tier-2 came online in September 2006 and now is commissioning with full capacity to provide significant computing power and services to the USATLAS community. Our Tier-2 Center also host the Michigan Muon Calibration Center which is responsible for daily calibrations of the ATLAS Monitored Drift Tubes for ATLAS endcap muon system. During the first LHC beam period in 2008 and following ATLAS global cosmic ray data taking period, the Calibration Center received a large data stream from the muon detector to derive the drift tube timing offsets and time-to-space functions with a turn-around time of 24 hours. We will present the Calibration Center commissioning status and our plan for the first LHC beam collisions in 2009.