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| TH301 |
Intermediate-Velocity Superconducting Accelerating Structures
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589 |
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- J. R. Delayen
Jefferson Lab, Newport News, Virginia
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In the last decade, one of the most active areas in the application of the superconducting (SC) rf technology has been for the acceleration of ions to medium energies (~1 GeV/amu). One such accelerator is under construction in the US while others are being proposed in the US, Japan, and Europe. These new facilities require SC accelerating structures operating in a velocity region that has until recently been unexplored, and new types of structures optimized for the velocity range from ~0.2 to ~0.8 c have been developed. We will review the properties of these intermediate-velocity structures, the status of their development, as well as present an overview of the medium-energy superconducting ion accelerator designs being developed world-wide.
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Transparencies
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| TH302 |
End-to-End Beam Simulations for the MSU RIA Driver Linac
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594 |
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- X. Wu, M. Doleans, D. Gorelov, T.L. Grimm, F. Marti, R.C. York, Q. Zhao
NSCL, East Lansing, Michigan
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The Rare Isotope Accelerator (RIA) driver linac proposed by Michigan State University (MSU) will use a 10th sub-harmonic based, superconducting, cw linac to accelerate light and heavy ions to final energies of ≤400 MeV/u with beam powers of 100 to 400 kW. The driver linac uses superconducting quarter-wave, half-wave, and six-cell elliptical cavities with frequencies ranging from 80.5 MHz to 805 MHz for acceleration, and superconducting solenoids and room temperature quadrupoles for transverse focusing. For the heavier ions, two stages of charge-stripping and multiple-charge-state acceleration will be used to meet the beam power requirements and to minimize the requisite accelerating voltage. End-to-end, three-dimensional (3D), beam dynamics simulations from the ECR to the radioactive beam production targets have been performed. These studies include a 3D analysis of multi-charge-state beam acceleration, evaluation of transverse misalignment and rf errors on the machine performance, modeling of the charge-stripping and stripping-chicane performance, and beam switchyard design. The results of these beam dynamics studies will be presented, and further planned beam dynamics studies will be discussed.
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Transparencies
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