Author: Anerella, M.
Paper Title Page
TUZGBE2 Final-focus Superconducting Magnets for SuperKEKB 1215
 
  • N. Ohuchi, K.A. Aoki, Y. Arimoto, M.K. Kawai, T. Kawamoto, H. Koiso, Y. Kondo, M. Masuzawa, A. Morita, S. Nakamura, Y. Ohnishi, Y. Ohsawa, T. Oki, H. Sugimoto, K. Tsuchiya, R. Ueki, X. Wang, H. Yamaoka, Z.G. Zong
    KEK, Ibaraki, Japan
  • M. Anerella, J. Escallier, A.K. Jain, A. Marone, B. Parker, P. Wanderer
    BNL, Upton, Long Island, New York, USA
  • J. DiMarco, T.G. Gardner, J.M. Nogiec, M.A. Tartaglia, G. Velev
    Fermilab, Batavia, Illinois, USA
  • T.-H. Kim
    Mitsubishi Electric Corp, Advanced Technology R & D Center, Hyogo, Japan
 
  The SuperKEKB collider aims at 40 times higher luminosity than that achieved at KEKB, based on the nano-beam scheme. The vertical beta function at the interaction point will be squeezed to 300μmeter. Final-focus superconducting magnet system which consists of eight main quadrupole magnets, 43 corrector windings, and compensation solenoids is a key component to achieve high luminosity. This invited talk presents the construction and commissioning of the final-focus magnet system.  
slides icon Slides TUZGBE2 [4.239 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-TUZGBE2  
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WEPMF014 Fast Track Actively Shielded Nb3Sn IR Quadrupole R&D 2398
 
  • B. Parker, M. Anerella, J.P. Cozzolino, R.C. Gupta, R.B. Palmer, J. Schmalzle, H. Witte
    BNL, Upton, Long Island, New York, USA
 
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy.
The Interaction Region (IR) magnets for future Electron Ion Colliders (EIC), such as eRHIC at BNL, JLEIC at JLab and LHeC at CERN, must satisfy strongly opposing requirements. EIC IR superconducting quadrupole coils must provide strong focusing gradients, leading to large peak fields, for the high momentum hadron beam while permitting the nearby electron beam to pass through a nearly field free region. An actively shielded coil geometry does this using nested, opposite polarity, quadrupoles where the combined external fields cancel while leaving a net gradient inside. In order to fabricate and test this concept in a timely and cost effective manner we propose to reuse the inner coils from an existing high gradient Nb3Sn LARP quadrupole inside a new structure with a new NbTi active shield coil. The main challenge is to design a compact structure for applying prestress to the Nb3Sn coil that fits the restricted space inside the shield coil. We first construct a 15 cm long mechanical model of this structure with coil strain gauges to verify the design concept before proceeding with the full coil. Mechanical modeling results and our preliminary design concept are reported here.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-WEPMF014  
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