Figure 10.

(a) Beam emittance and (b) Courrant–Snyder α parameter dependence on the value of the external magnetic field (in-line configuration) computed at beam waist position z_w from Table TABLE I.. The minima of the emittance for nonzero values of the magnetic field also correspond for the most beam divergent and most beam convergent cases in the considered range. The most beam divergent cases have a beam slope of 49.93 and 48.03 for Litton and Varian, respectively, whereas the most beam convergent cases have a beam slope of −60.83 and −60.52 for Litton and Varian, respectively.