Tune shift effect due to the sextupole longitudinal periodic structure in the superconducting dipole magnets

Using the standard Hamiltonian perturbation theory, the tune shift due to the sextupole periodic pattern in the superconducting dipole magnets is estimated for the Superconducting Super Collider (SSC) machine. The result indicates that this effect is of the order of 10/sup -9/. Therefore, this effect can be neglected in the dynamics of the beam.<
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