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Opis

At the Large Hadron Collider (LHC), a large number of§events containing Z bosons will be available and the§calibration of the absolute jet energy scale with§these events becomes feasible for the first time.§Such a calibration is important as the uncertainty on§this observable will be the dominant systematical§uncertainty on most LHC analyses. This work§demonstrates the feasibility of such a calibration§within the CMS experiment through a comparison of the§momentum of a jet with the precisely reconstructed§momentum of a Z boson decaying into two muons. The§four LHC experiments will produce about 15 petabytes§of data annually which are stored and processed using§grid technologies. This, however, requires additional§services which do not fully load server machines at§smaller grid sites. The virtualisation of operating§systems enables the consolidation of different§services on a few server machines. Extending this§concept to batch queuing systems allows overcoming§intrinsic limitations of shared computing§infrastructures. Both, the consolidation of an§institute's computing and grid infrastructure and a§prototype implementation of a virtualised batch§queuing systems are presented. At the Large Hadron Collider (LHC), a large number of§events containing Z bosons will be available and the§calibration of the absolute jet energy scale with§these events becomes feasible for the first time.§Such a calibration is important as the uncertainty on§this observable will be the dominant systematical§uncertainty on most LHC analyses. This work§demonstrates the feasibility of such a calibration§within the CMS experiment through a comparison of the§momentum of a jet with the precisely reconstructed§momentum of a Z boson decaying into two muons. The§four LHC experiments will produce about 15 petabytes§of data annually which are stored and processed using§grid technologies. This, however, requires additional§services which do not fully load server machines at§smaller grid sites. The virtualisation of operating§systems enables the consolidation of different§services on a few server machines. Extending this§concept to batch queuing systems allows overcoming§intrinsic limitations of shared computing§infrastructures. Both, the consolidation of an§institute''s computing and grid infrastructure and a§prototype implementation of a virtualised batch§queuing systems are presented.

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Kategoria Książki po angielsku Mathematics & science Physics

• Pełny tytuł: Virtualisation of Grid Resources and Prospects of the Measurement of Z Boson Production in Association with Jets at the Large Hadron Collider
• Autor: Volker Büge
• Język: Angielski
• Oprawa: Miękka
• Liczba stron: 200
• EAN: 9783639003826
• ISBN: 3639003829
• ID: 06810536
• Wydawca: VDM Verlag Dr. Mueller E.K.
• Waga: 277 g
• Wymiary: 226 × 152 × 13 mm
• Data wydania: 05. November 2008

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