منابع مشابه
The Linux PC Farms at DESY Zeuthen
In the end of 97 the experimental groups at DESY Zeuthen wanted to increase their compute power. Although the di erent groups had di erent legacy platforms, like IBM, HP or IRIX, it came out, that all the computing needs could be ful lled by providing commodity PC hardware with the operating system Linux, because PC hardware has a much better price/performance ratio, the operating system Linux ...
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In the commercial market Linux running on commodity PC hardware is reaching critical mass. In High Energy Physics the Linux operating system is already established. There it proved in the last few years that it is well suited for desktop computing, for batch farms and for so called workgroup servers. Within some of these computing models it competes with the old established UNIX operating syste...
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The DESY R&D program on cavities fabricated from large-grain niobium explores the potential of this material for the production of approximately 1000 nine-cell cavities for the European XFEL. The program investigates both basic material properties, comparing large grain material to standard sheet niobium, and material availability, production, and preparation aspects. Several single-cell caviti...
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The cross section for the photoproduction of large-pT J/ψ mesons at HERA is calculated at next-to-leading order, adopting a perturbative approach to describe the fragmentation of charm quarks and gluons into J/ψ mesons. We treat the charm quark according to the massless factorization scheme, where it is assumed to be one of the active flavours inside the proton and the resolved photon. We prese...
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ژورنال
عنوان ژورنال: Nature
سال: 2002
ISSN: 0028-0836,1476-4687
DOI: 10.1038/415472c