Author: Pozdeyev, G.
Paper Title Page
MO1AB1 FRIB Project Status and Beam Instrumentation Challenges 1
 
  • J. Wei, H. Ao, S. Beher, N.K. Bultman, F. Casagrande, J. Chen, S. Cogan, C. Compton, L.R. Dalesio, K.D. Davidson, A. Facco, F. Feyzi, V. Ganni, A. Ganshyn, P.E. Gibson, T. Glasmacher, L. Hodges, K. Holland, H.-C. Hseuh, A. Hussain, M. Ikegami, S. Jones, R.E. Laxdal, J. LeTourneau, S.M. Lidia, G. Machicoane, I.M. Malloch, F. Marti, S.J. Miller, D.G. Morris, J.A. Nolen, P.N. Ostroumov, J.T. Popielarski, L. Popielarski, G. Pozdeyev, T. Russo, K. Saito, S. Stanley, H. Tatsumoto, R.C. Webber, T. Xu, Y. Yamazaki
    FRIB, East Lansing, USA
  • A.V. Aleksandrov
    ORNL, Oak Ridge, Tennessee, USA
  • K. Dixon, M. Wiseman
    JLab, Newport News, Virginia, USA
  • N. Eddy
    Fermilab, Batavia, Illinois, USA
  • A. Facco
    INFN/LNL, Legnaro (PD), Italy
  • K. Hosoyama
    KEK, Ibaraki, Japan
  • H.-C. Hseuh
    BNL, Upton, Long Island, New York, USA
  • M.P. Kelly, J.A. Nolen
    ANL, Argonne, Illinois, USA
  • R.E. Laxdal
    TRIUMF, Vancouver, Canada
  • S. Prestemon
    LBNL, Berkeley, California, USA
  
  Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661 and the National Science Foundation under Cooperative Agreement PHY-1102511.
With an average beam power two orders of magnitude higher than operating heavy-ion facilities, the Facility for Rare Isotope Beams (FRIB) stands at the power frontier of the accelerator family. This report summarizes the status of design, technology development, construction, commissioning, as well as path to operations and upgrades. We also highlight beam instrumentation challenges including machine protection of high-power heavy-ion beams and complications of multi-charge-state and multi-ion-species accelerations. 		 
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-MO1AB1  
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MOPCC14 Physics Model of an Allison Phase-Space Scanner, with Application to the FRIB Front End 72
 
  • C.Y. Wong
    NSCL, East Lansing, Michigan, USA
  • S. Cogan, Y. Hao, S.M. Lidia, S.M. Lund, T. Maruta, D.O. Omitto, P.N. Ostroumov, G. Pozdeyev, H.T. Ren, R. Shane, T. Yoshimoto, Q. Zhao
    FRIB, East Lansing, USA
  
  We study Allison-type phase-space scanners by extending analytic models to include two important geometric features that are conventionally omitted, namely asymmetric slit-plate to dipole-plate gaps at the two ends and finite slit-plate thickness. Their effects can be significant for high-resolution Allison scanners and lead to two corrections in the measurement data relative to more idealized descriptions: 1) a change in the voltage-to-angle conversion relation, and 2) a data point weight compensation factor. These findings are corroborated by numerically integrated single-particle trajectories in a realistic 2D field map of the device. The improved model was applied to the Allison scanner used to measure a 12 keV/u heavy-ion beam in the front-end of the Facility for Rare Isotope Beams (FRIB) at Michigan State University. Preliminary measurements show that the improved model results in significant (>10%) modifications to beam moments, thus rendering the corrections important for accurate phase-space characterizations.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-MOPCC14  
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