2,047 research outputs found
Muon Collider Overview: Progress and Future Plans
Besides continued work on the parameters of a 3-4 and 0.5 TeV CoM collider,
many studies are now concentrating on a machine near 100 GeV that could be a
factory for the s-channel production of Higgs particles. We mention the
research on the various components in such muon colliders, starting from the
proton accelerator needed to generate pions from a heavy-Z target and
proceeding through the phase rotation and decay channel, muon cooling,
acceleration, storage in a ring and the collider detector. We also mention
theoretical and experimental R&D plans for the next several years that should
lead to a better understanding of the design and feasibility issues for all of
the components. This note is a summary of a report updating the progress on the
R&D since the Feasibility Study of Muon Colliders presented at the Workshop
Snowmass'96.Comment: 3 pages, 2 figures, LaTex EPAC format; to be published Proceedings of
the EPAC98 Conference, Stockholm, Sweden, June 1998. Additional information
and articles at http://www.cap.bnl.gov/mumu
Evaluation and Analysis of Node Localization Power Cost in Ad-Hoc Wireless Sensor Networks with Mobility
One of the key concerns with location-aware Ad-hoc Wireless Sensor Networks (AWSNs) is how sensor nodes determine their position. The inherent power limitations of an AWSN along with the requirement for long network lifetimes makes achieving fast and power-efficient localization vital. This research examines the cost (in terms of power) of network irregularities on communications and localization in an AWSN. The number of data bits transmitted and received are significantly affected by varying levels of mobility, node degree, and network shape. The concurrent localization approach, used by the APS-Euclidean algorithm, has significantly more accurate position estimates with a higher percentage of nodes localized, while requiring 50% less data communications overhead, than the Map-Growing algorithm. Analytical power models capable of estimating the power required to localize are derived. The average amount of data communications required by either of these algorithms in a highly mobile network with a relatively high degree consumes less than 2.0% of the power capacity of an average 560mA-hr battery. This is less than expected and contrary to the common perception that localization algorithms consume a significant amount of a node\u27s power
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Three-Dimensional Simulation Analysis of the First Sections of a Standing-Wave Free-Electron Laser Two-Beam Accelerator
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Theoretical Examination of Transfer Cavities in a Standing-wave Free-electron Laser Two-beam Accelerator
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