Abstract
Angular distributions of radiation from a three-pole superconducting horizontal wiggler operated on a 1.5-GeV storage ring have been calculated in detail. The horizontal distribution of vertically integrated power exhibits a remarkable asymmetry when the radiation is observed at distances close to the center of the wiggler. The distribution exhibits a prominent dip in the forward direction, at a position where the radiation stems primarily from the main magnet, which is set at a maximum field of 4.40 T. The spectral flux at around 1–2 Å exhibits an effective angular spread of ±37 mrad. The central brilliance at 1 Å is 7×1012 photons/s mrad2 mm2 0.1% bandwidth for a current of 300 mA.
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