Bmad's periodic-type wiggler model is in use (see Bmad manual, page 30). This is an ideally non-linear wiggler model, similar to a single-mode wiggler, where the only nonlinearity included in tracking results is the dominant one: the vertical octupole term. This corresponds to an idealized wiggler with B_x = 0, B_y = B_peak*sin(kz), dB_y/dx = 0, and pole width = infinity. This wiggler model is not defined by a 3-D wiggler map, merely the peak wiggler field, period, and total length. The lattice has not been reoptimized after this new wiggler model was inserted; sextupoles, quadrupoles, etc, are as in original lattice. Tune rematched to original lattice with matrix transformations at position of each wiggler. Dynamic aperture measured for 1 damping time.
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Dynamic Aperture performed with Radiation Damping Off & Excitation Off:
Dynamic Aperture performed with Radiation Damping On & Excitation Off:
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Created May 24, 2005
Modified August 11, 2005