Author: Laxdal, R.E.
Paper Title Page
WEYA01 Beam Physics and Technical Challenges of the FRIB Driver Linac 2039
 
  • Y. Yamazaki, H. Ao, N.K. Bultman, F. Casagrande, C. Compton, K.D. Davidson, A. Facco, F. Feyzi, P.E. Gibson, T. Glasmacher, Z.Q. He, L.T. Hoff, K. Holland, M. Ikegami, S.M. Lidia, Z. Liu, G. Machicoane, F. Marti, S.J. Miller, D. Morris, J. Popielarski, L. Popielarski, G. Pozdeyev, T. Russo, K. Saito, S. Shanab, G. Shen, S. Stark, H. Tatsumoto, R.C. Webber, J. Wei, T. Xu, Y. Zhang, Q. Zhao, Z. Zheng
    FRIB, East Lansing, Michigan, USA
  • K. Dixon, V. Ganni
    JLab, Newport News, Virginia, USA
  • A. Facco
    INFN/LNL, Legnaro (PD), Italy
  • K. Hosoyama, M. Masuzawa, K. Tsuchiya
    KEK, Ibaraki, Japan
  • M.P. Kelly, P.N. Ostroumov
    ANL, Argonne, Illinois, USA
  • R.E. Laxdal
    TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
 
  Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661.
The FRIB driver linac accelerates all the stable ion beams including uranium over 200 MeV/u with a CW beam power of 400 kW in order to produce isotopes as rare as possible. Except for 0.5 MeV/u RFQ, the linac is making use of superconducting (SC) RF technology. The beam power, which is an order of 2.5 as high as those of existing SC heavy ion linac, gives rise to many technical challenges as well as beam physics related ones. In particular, the uranium beam loss power density is approximately 30 times as high as the proton one with the same beam energy per nucleon and the same beam power. For this reason, the machine protection system needs a special care. Another example of the technical challenges is to install beam focusing solenoid as close as possible to SC cavities in order to ensure the frequent beam focusing both longitudinally and transversely. The talk reviews all these challenges with development results of their mitigation as well as construction status.
 
slides icon Slides WEYA01 [16.820 MB]  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEYA01  
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WEIB03 Technology Transfer and Research Projects 2109
 
  • R.E. Laxdal
    TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
 
  The funding scenario seems to improve based on the capability of a laboratory to generate technology that can be transferred to industry, in particular if the technology is of public interest. New research projects may benefit if the technology transfer is considered as an integral part of the project itself. The drawback could be that revenue generated by a successful technology transfer may give the impression that research projects only provide societal benefit by direct transfer through closed protocols. This paper provides an overview of different technology transfer projects worldwide and how different laboratories are dealing with the issue.  
slides icon Slides WEIB03 [28.369 MB]  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEIB03  
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WEPMB035 SRF Cavities for RAON 2200
 
  • H.C. Jung, J. Joo, J. Lee
    IBS, Daejeon, Republic of Korea
  • R.E. Laxdal, Z.Y. Yao
    TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
 
  SRF cavities of superconducting linear accelerators in RAON are developed and tested at 2K/4K. 1st Quarter Wave Resonator (QWR) and Half Wave Resonator (HWR) are fabricated by a domestic vender and tested in the TRIUMF's facility. The measured Q factors are above the required values at the operating gradients. And the predicted multipacting phenomena are observed in the test and easily conditioned. The Q factors decreased after a slow cooldown and enhanced at 4K tests by a low temperature baking. Based on these tests, modified bare cavities are newly developed, jacketed and will be tested with tuners and power couplers.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPMB035  
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