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Lecture 5 Damping Ring basics Exercise solution. QF. QD. QF. FODO Lattice an example.  . 12 FODO cells Q x = 3.15, Q z = 3.15.  x. FODO cell  x =  y = 94.5º. Thin Lens FODO Cell.
                
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QF QD QF FODO Latticean example  12 FODO cells Qx = 3.15, Qz = 3.15 x FODO cell x= y= 94.5º
Thin Lens FODO Cell In thin lens approximation and representing dipoles as drift spaces the matrix of a FODO cell can be written as Comparing this with the matrix of a periodic structure evaluate the betatron phase advanceand the Twiss functions  and  at the center of QF (optionally QD) Optional: Observe the behavior of  and D as a function of ; what happens at 180º?