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Use of ROOT in the D0 RunII Online Event Monitoring System

Jaehoon Joel D0 Collaboration Yu Snow
 Fermi National Accelerator Laboratory Langston University

Speaker: Jaehoon Yu

  The Dě experiment is one of the two High-Energy proton anti-proton collider experiments at Fermilab, USA. Since the detector serves multiple physics purposes, it consists of many different sub-detector systems together with supporting control systems. Therefore, online event monitoring plays a crucial role in ensuring detector performance and data quality by parasitically sampling of events during the data taking. ROOT, a physics analysis package developed at CERN, is used in the Dě online monitoring as the main analysis tool, providing graphical user interface that interacts remotely with an analysis executable and tools to monitor informative histograms as they get updated throughout the data taking in the shared memory. In this paper, we present the basic structure of the Dě online event monitoring system and the use of ROOT in the system.

Presentation:  PowerPoint Short Paper:  Adobe Acrobat pdf 

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