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BES-III Distributed Computing

Deng, Z.Y. (Beijing, Inst. High Energy Phys.) ; Li, W.D. (Beijing, Inst. High Energy Phys.) ; Lin, L. (Soochow U.) ; Nicholson, C. (Beijing, GUCAS) ; Zhang, X.M. (Beijing, Inst. High Energy Phys.) ; Zhemchugov, A. (Dubna, JINR)

Year: 2012
Page No: 85-88
Pages: 4

Abstract: The BES-III experiment [1] started to take data in 2009 after a major upgrade of the electronpositron collider BEPC-II at the Institute of High Energy Physics (Beijing, China). The experiment is run by an international collaboration of more than 400 active members from 52 institutes in 12 countries from around the world. The main physics goals of the experiment are precision measurements in the τ-charm domain in the energy range of 2 – 4.6 GeV. The BES-III experiment has already taken the world’s largest data samples of J/ψ (1.2x109 events) and ψ' decays (0.3x109 events), as well as a large amount of ψ(3770) data and a unique sample of ψ(4040) data. The total volume of experimental data is about 0.5 PB, of which about 120 TB is event summary data for physics analysis (DSTs). This amount of data is rather large to be processed in a single computing center. Use of distributed computing looks like an attractive option to increase the computing power of the experiment and speed up data analysis.

Web-Page: http://inspirehep.net/record/1611082/files/bes_III.pdf

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