Formulations in a ray tracing program for simulating sychrotron radiation sources such as bending magnets, wigglers, and undulators are described. The characteristic spatial behavior of rays emitted from the sources is simply expressed in the ray tracing program by using the Box and Müller method. A ray tracing simulation of a multipole wiggler beamline, BL-16, at the Photon Factory is also described. The result indicated that the wiggler radiation was collimated vertically with the divergence of 4 arcsec by a collimating mirror and focused at the sample position with spot size of 1.5 mm×0.5 mm.
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Muramatsu et al. (1989) studied this question.