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<p align="center" class="MsoNormal"><b>Old Dominion University<o:p></o:p></b></p>
<p align="center" class="MsoNormal"><b>Department of Physics<o:p></o:p></b></p>
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<p align="center" class="MsoNormal"><b>Spring Colloquium Series<o:p></o:p></b></p>
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<p align="center" class="MsoNormal"><b>Thursday</b><b> March 25, 2010<o:p></o:p></b></p>
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<p align="center" class="MsoNormal"><b>"New Superconducting Materials for
the Next Generation Particle Accelerators"<o:p></o:p></b></p>
<p align="center" class="MsoNormal"><br>
<b>Dr. Alex Gurevich<o:p></o:p></b></p>
<p align="center" class="MsoNormal"><b>Florida
State University</b><b><o:p></o:p></b></p>
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<p class="MsoNormal">Achieving accelerating field gradients above 50 Mv/m in
superconducting cavities for particle accelerators will require novel cavity designs
and materials other than Nb given that the SRF performance of the best Nb
cavities has approached the limits set by the physics of the superconducting
Meissner state under strong rf fields. In this talk I will give an overview of
the fundamental physics and materials science issues which determine these SRF
limits, and discuss possible ways of increasing the cavity performance well
beyond the intrinsic limits of Nb technology. One possibility based on the
multilayer coating of Nb cavities is already being pursued by several groups
worldwide. This approach opens up the opportunity of increasing the
accelerating field gradients and reducing the operating costs by taking
advantage of many existing materials with superconducting characteristics much
better than those of Nb. <o:p></o:p></p>
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<p align="right" class="MsoNormal">Presentation:<o:p></o:p></p>
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<p align="center" class="MsoNormal">OCNPS 200<o:p></o:p></p>
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<p class="MsoNormal">@ 12:20 pm<o:p></o:p></p>
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note unusual date and time<o:p></o:p></p>
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<p align="center" class="MsoNormal">More details at http://www.physics.odu.edu<o:p></o:p></p>
<p align="center" class="MsoNormal">All are Welcome!<o:p></o:p></p>
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