Angular and energy distributions due to multiple small angle scattering were calculated with different models, namely from the analytical Szilágyi theory, the Monte Carlo code MCERD in binary collision approximation, and the molecular dynamics code MDRANGE, for 2 MeV 4 He in Au at backscattering geometry and for 20 MeV 127 I recoil analysis of carbon. The widths and detailed shapes of the distributions are compared, and reasons for deviations between the different models are discussed.
CMS expects to manage several Pbytes of data each year, distributing them over many computing sites around the world and enabling data access at those centers for analysis. CMS has identified the distributed sites as the primary location for physics analysis to support a wide community of users, with potentially as many as 3000 users. This represents an unprecedented scale of distributed computing resources and number of users. An overview of the computing architecture, the software tools and the distributed infrastructure deployed is reported. Summaries of the experience in establishing efficient and scalable operations to prepare for CMS distributed analysis are presented, followed by the user experience in their current analysis activities.JournalofGridComputing manuscript No. (will be inserted by the editor) Abstract CMS expects to manage several Pbytes of data each year, distributing them over many computing sites around the world and enabling data access at those centers for analysis. CMS has identified the distributed sites as the primary location for physics analysis to support a wide community of users, with potentially as many as 3000 users. This represents an unprecedented scale of distributed computing resources and number of users. An overview of the computing architecture, the software tools and the distributed infrastructure deployed is reported. Summaries of the experience in establishing efficient and scalable operations to prepare for CMS distributed analysis are presented, followed by the user experience in their current analysis activities.
Distributed Analysis in CMS
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