Stability and Halo Formation in Axisymmetric Intense Beams
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Beam stability and halo formation in high-intensity axisymmetric 2D beams in a uniform focusing channel are analyzed using particle-in-cell simulations. The tune depression - mismatch space is explored for the uniform (KV) distribution of the particle transverse-phase-space density, as well as for more realistic ones (in particular, the water-bag distribution), to determine the stability limits and halo parameters. The numerical results show an agreement with predictions of the analytical model for halo formation (R.L. Gluckstern, Phys. Rev. Letters, 73 (1994) 1247).
4 pages, LaTeX (REVTeX), 5 figures (eps); presented at PAC97 (Vancouver, May 97)
4 pages, LaTeX (REVTeX), 5 figures (eps); presented at PAC97 (Vancouver, May 97)