Author: Nagaitsev, S.
Paper Title Page
MOPR035 Electron Lens for the Fermilab Integrable Optics Test Accelerator 170
 
  • G. Stancari, A.V. Burov, K. Carlson, D.J. Crawford, V.A. Lebedev, J.R. Leibfritz, M.W. McGee, S. Nagaitsev, L.E. Nobrega, C.S. Park, E. Prebys, A.L. Romanov, J. Ruan, V.D. Shiltsev, Y.-M. Shin, J.C.T. Thangaraj, A. Valishev
    Fermilab, Batavia, Illinois, USA
  • D. Noll
    IAP, Frankfurt am Main, Germany
  • Y.-M. Shin
    Northern Illinois University, DeKalb, Illinois, USA
 
  Funding: Fermilab is operated by Fermi Research Alliance, LLC, under Contract DE-AC02-07CH11359 with the US Department of Energy.
The Integrable Optics Test Accelerator (IOTA) is a research machine currently being designed and built at Fermilab. The research program includes the study of nonlinear integrable lattices, beam dynamics with self fields, and optical stochastic cooling. One section of the ring will contain an electron lens, a low-energy magnetized electron beam overlapping with the circulating beam. The electron lens can work as a nonlinear element, as an electron cooler, or as a space-charge compensator. We describe the physical principles, experiment design, and hardware implementation plans for the IOTA electron lens.
 
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WEAM7X01
Nonlinear Focusing in IOTA for Space-Charge Compensation and Landau Damping  
 
  • S. Nagaitsev
    Fermilab, Batavia, Illinois, USA
 
  Funding: This research is supported by FRA, LLC for the U. S. Department of Energy under contract DE-AC02-07CH11359.
In 1967 Edwin McMillan proposed the first stable nonlinear accelerator focusing system (Report UCRL-17795). Since then, there have been several additional theoretical proposals on how to implement a practical nonlinear accelerator focusing system, but none were ever tested experimentally. This presentation will describe several practical proposals to implement nonlinear focusing elements in the Fermilab IOTA ring. These nonlinear elements would employ magnetic fields and electron lenses to create a large betatron tune spread and may help increase beam intensities in present and future accelerators, by providing space-charge compensation and increasing Landau damping.
 
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