36
E. Wilson and B. J. Holzer
Fig. 2.15 Particle lost due to
coupling
Fig. 2.16 Liouville’s
theorem applies to this
contour
Even though the ellipse may appear to have many shapes around the accelerator
its phase space area will not change (Fig. 2.17). The aspect ratio of the ellipse
will change however. At a narrow waist, near a D quadrupole (a) in Fig. 2.17, its