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Monitoring CMS tracker construction and data quality using a Grid/Web service based on a visualization tool

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3 Author(s)
G. Zito ; Dipt. Interateneo di Fisica, Ist. Nazionale di Fisica Nucl., Bari, Italy ; M. S. Mennea ; A. Regano

The complexity of the CMS tracker (more than 50 million channels to monitor) now in construction in ten laboratories worldwide with hundreds of interested people, will require new tools for monitoring both the hardware and the software. In our approach we use both visualization tools and Grid services to make this monitoring possible. The use of visualization enables us to represent in a single computer screen all those million channels at once. The Grid will make it possible to get enough data and computing power in order to check every channel and also to reach the experts everywhere in the world allowing the early discovery of problems. We report here on a first prototype developed using the Grid environment already available now in CMS i.e. LCG2. This prototype consists on a Java client which implements the GUI for tracker visualization and two data servers connected to the tracker construction database and to Grid catalogs of event datasets. All the communication between client and servers is done using data encoded in XML and standard Internet protocols.

Published in:

Nuclear Science Symposium Conference Record, 2004 IEEE  (Volume:3 )

Date of Conference:

16-22 Oct. 2004