Figure 4

Possible layouts of dispersion suppressor sections based on CF main magnets and standard quadrupoles to be used in combination with the optimised CF cell layout presented in the previous section. The evolution of the optical parameters and dispersion function as a function of s is shown, together with a sketch of each layout on top of the plot: CF main magnets (rectangles centred around the middle line) and quadrupoles (rectangle above or below the centre line to represent their polarity) are shown. The layout (a) is the starting point, made of CF main magnets with half of the bending field of the magnets in the regular CF cell. All other cases refer to variants with CF main magnet with the same properties of those in the CF cell. The length of the dispersion suppressor, given by the condition \(D_{x}=D'_{x}=0\), decreases for the different variants