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MOPLS141 |
The Proposed Conversion of CESR to an ILC Damping Ring Test Facility
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891 |
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- M.A. Palmer, R.W. Helms, D. L. Rubin, D. Sagan, J.T. Urban
Cornell University, Laboratory for Elementary-Particle Physics, Ithaca, New York
- M. Ehrlichman
University of Minnesota, Minneapolis, Minnesota
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In 2008 the Cornell Electron Storage Ring (CESR) will end nearly three decades of providing electron-positron collisions for the CLEO experiment. At that time it will be possible to reconfigure CESR as a damping ring test facility, CesrTF, for the International Linear Collider (ILC) project. With its complement of 12 damping wigglers, CesrTF will offer horizontal emittances in the few nanometer range and, ideally, vertical emittances approaching those specified for the ILC damping rings. An important feature of the CesrTF concept is the ability to operate with positrons or electrons. Positron operation will allow detailed testing of electron cloud issues critical for the operation of the ILC positron damping rings. Other key features include operation with wigglers that meet or exceed all ILC damping ring requirements, the ability to operate from 1.5 to 5.5 GeV beam energies, and the provision of a large insertion region for testing damping ring hardware. We discuss in detail the CesrTF machine parameters, critical conversion issues, and experimental reach for damping ring studies.
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MOPLS142 |
Optimization of CESR-c Superferric Wiggler for the International Linear Collider Damping Rings
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894 |
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- J.T. Urban, G. Dugan, M.A. Palmer
Cornell University, Laboratory for Elementary-Particle Physics, Ithaca, New York
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We present the results of an optimization of the Cornell Electron Storage Ring (CESR) superferric wiggler for the International Linear Collider (ILC) damping ring. The superferric CESR wiggler has been shown to have excellent beam dynamics properties in the ILC damping ring. We reduced the physical size, and hence cost, of the CESR wiggler with minimal degradation of ILC damping ring beam dynamics. We will provide a description of the optimized superferric wiggler and show the performance of this wiggler in the ILC baseline damping ring.
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