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Figure 1
Overview photograph and schematic of the segmented cross undulator installed at a long straight section of SPring-8 BL07LSU. It consists of eight segments of figure-8 undulator and seven phase shifters (PSs). Four undulator segments generate horizontally polarized radiation at the fundamental radiation (shown in the schematic as H), and the other four segments generate vertically polarized radiation (shown in the schematic as V). Two types of PS are installed: permanent-magnet phase shifter (PM-PS) and electromagnet phase shifter (EM-PS). Note that the ID segments and PSs in the segmented cross undulator are in a straight line although the photograph shows visual distortion to keep a wide panoramic view of the 27 m-long undulator.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
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