Paper | Title | Page |
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THPBA13 | Mechanical Design of the Cryogenic Sub-Systems for ReA6 Quarter Wave Resonator Cryomodule | 1256 |
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Funding: Work supported by US DOE Cooperative Agreement DE-SC000061 The driver linac for the Facility for Rare Isotope Beams (FRIB) consists of 49 cryomodules operated at 2 K utilizing 4 different types of superconducting resonators and 2 solenoid lengths which in turn requires 7 individual cryomodule configurations. The mechanical design requirements of the internal cryogenics of an FRIB cryomodule are determined by the piping and instrumentation diagram, which is discussed in the paper based on the FRIB quarter wave cryomodule type. In addition, heat load requirements and spatial constraints of other cryomodule sub-systems influence the cryomodule cryogenics design. The paper describes detailed design choices for the cryogenic headers and piping, a 2 K heat exchanger inside the cryomodule, solenoid current leads, and the bayonet connections to the cryogenic distribution system inside the accelerator tunnel. Different operating modes, which influence the cryogenic design, are summarized. |
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FRYBA1 | Progress towards the Facility for Rare Isotope Beams | 1453 |
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Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661 The Facility for Rare Isotope Beams (FRIB) is based on a continuous-wave superconducting heavy ion linac to accelerate all the stable isotopes to above 200 MeV/u with a beam power of up to 400 kW. At an average beam power approximately two-to-three orders-of-magnitude higher than those of operating heavy-ion facilities, FRIB stands at the power frontier of the accelerator family - the first time for heavy-ion accelerators. To realize this innovative performance, superconducting RF cavities are used starting at the very low energy of 500 keV/u, and beams with multiple charge states are accelerated simultaneously. Many technological challenges specific for this linac have been tackled by the FRIB team and collaborators. Furthermore, the distinct differences from the other types of linacs at the power front must be clearly understood to make the FRIB successful. This report summarizes the technical progress made in the past years to meet these challenges. |
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