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The Worldwide LHC Computing Grid (WLCG), formerly (until 2006) the LHC Computing Grid (LCG), is an international collaborative project that consists of a grid-based computer network infrastructure incorporating over 170 computing centers in 36 countries, as of 2012. It was designed by CERN to handle the prodigious volume of data produced by Large Hadron Collider (LHC) experiments.〔 〕〔 〕 By 2012, data from over 300 trillion (3×1014) LHC proton-proton collisions had been analyzed,〔(Hunt for Higgs boson hits key decision point )〕 and LHC collision data was being produced at approximately 25 petabytes per year. As of 2012, The LHC Computing Grid had become the world's largest computing grid comprising over 170 computing facilities in a worldwide network across 36 countries.〔〔(Worldwide LHC Computing Grid main page ) 14 November 2012: ''"() global collaboration of more than 170 computing centres in 36 countries ... to store, distribute and analyse the ~25 Petabytes (25 million Gigabytes) of data annually generated by the Large Hadron Collider"''〕〔(What is the Worldwide LHC Computing Grid? (Public 'About' page) ) 14 November 2012: ''"Currently WLCG is made up of more than 170 computing centers in 36 countries...The WLCG is now the world's largest computing grid"''〕 ==Background== The Large Hadron Collider at CERN was designed to prove or disprove the existence of the Higgs boson, an important but elusive piece of knowledge that had been sought by particle physicists for over 40 years. A very powerful particle accelerator was needed, because Higgs bosons might not be seen in lower energy experiments, and because vast numbers of collisions would need to be studied. Such a collider would also produce unprecedented quantities of collision data requiring analysis. Therefore advanced computing facilities were needed to process the data. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Worldwide LHC Computing Grid」の詳細全文を読む スポンサード リンク
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