Paper | Title | Page |
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THIOA02 | Superconducting RF Development for FRIB at MSU | 790 |
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Funding: *This material is based upon work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661. FRIB is a $730M heavy ion accelerator project and a very large scale machine for many nuclear physics users. The civil construction started on March 17th 2014. The SRF system design and development have completed. The machine is to be in early completion end of 2019. FRIB accelerates ion species up to 238U with energies of no less than 200MeV/u and provides a beam power up to 400kW. Four SRF cavity families are used from β=0.041, 0.085 (QWRs) to 0.29 and 0.53 (HWRs). 8T superconducting solenoids are installed in the cryomodules for space effective strong beam focusing. The biggest challenges are in accelerating the high-power heavy ion beams from the very low energy to medium energy and the stable operation for large user community. The SRF cryomodule design addressed three critical issues: high performance, stable operation and easy maintainability, which chose several unique technical strategies, e.g.2K operation, bottom up cryomodule assembly, local magnetic shielding and so on. This talk will include high performance cavity R&D, local magnetic shielding, flux trapping by solenoid fringe field, and bottom up cryomodule assembly. |
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Slides THIOA02 [5.049 MB] | |
MOIOC01 | Status of Superconducting Electron Linac Driver for Rare Ion Beam Production at TRIUMF | 31 |
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A MW class cw superconducting electron linac is being installed at TRIUMF as a driver for radioactive beam production through photo-fission. The ARIEL e-linac will house five 1.3GHz nine-cell cavities in three cryomodules and accelerate up to 10mA of electrons to 50MeV. A first phase of installation will see three cavities in two cryomodules installed by the end of 2014. Presently the injector cryomodule is installed and undergoing cryogenic and rf characterizations and beam acceleration tests with beam from the 300kV DC gun. The second cryomodule is being prepared for first tests. The linac status including descriptions and operating performance of installed cryogenic and rf systems, electron gun performance, cryomodule performance and the results of first beam acceleration tests will be reported. | ||
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Slides MOIOC01 [6.383 MB] | |