Effects of Transverse Physics on Nonlinear Evolution of Longitudinal Space-Charge Waves in Beams

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Longitudinal space-charge waves can introduce energy perturbations into charge particle beams and degrade the beam quality, which is critical to many modern applications of particle accelerators. Although many longitudinal phenomena arising from small perturbations can be explained by a one-dimensional cold fluid theory, nonlinear behavior of space-charge waves observed in experiments has not been well understood. In this paper, we summarize our recent investigation by means of more detailed measurements and self-consistent simulations. Combining the numerical capability of a PIC code, WARP, with the detailed initial conditions measured by our newly developed time resolved 6-D phase space mapping technique, we ... continued below

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K. Tian, I. Haber, R.A. Kishek, P.G. O'Shea, M. Reiser, D. Stratakis May 1, 2009.

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Longitudinal space-charge waves can introduce energy perturbations into charge particle beams and degrade the beam quality, which is critical to many modern applications of particle accelerators. Although many longitudinal phenomena arising from small perturbations can be explained by a one-dimensional cold fluid theory, nonlinear behavior of space-charge waves observed in experiments has not been well understood. In this paper, we summarize our recent investigation by means of more detailed measurements and self-consistent simulations. Combining the numerical capability of a PIC code, WARP, with the detailed initial conditions measured by our newly developed time resolved 6-D phase space mapping technique, we are able to construct a self consistent model for studying the complex physics of longitudinal dynamics of space-charge dominated beams. Results from simulation studies suggest that the unexplained nonlinear behavior of space-charge waves may be due to transverse mismatch or misalignment of beams.

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  • PAC09, 4-8 May 2009, Vancouver, BC, Canada

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  • Report No.: JLAB-ACC-09-1136
  • Report No.: DOE/OR/23177-1716
  • Grant Number: AC05-06OR23177
  • Office of Scientific & Technical Information Report Number: 1021895
  • Archival Resource Key: ark:/67531/metadc831800

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  • May 1, 2009

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  • May 19, 2016, 3:16 p.m.

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  • Sept. 21, 2017, 7:15 p.m.

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K. Tian, I. Haber, R.A. Kishek, P.G. O'Shea, M. Reiser, D. Stratakis. Effects of Transverse Physics on Nonlinear Evolution of Longitudinal Space-Charge Waves in Beams, article, May 1, 2009; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc831800/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.