In-vacuum undulators of SPring-8.
Most of the SPring-8 insertion devices are in-vacuum undulators except for the soft X-ray devices and one elliptical wiggler. The standard-type SPring-8 in-vacuum undulator has a period of 32 mm and a minimum gap of 8 mm. The fundamental radiation energy ranges from 5.2 to 18.5 keV. Three standard in-vacuum undulators are already installed in the ring and are operating without any problems. The magnetic field correction, the vacuum system and the commissioning of the in-vacuum undulators are described in this paper.
Hara
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SPring-8, Kamigori-cho, Ako-gun, Hyogo-ken, 678-12, Japan.
Tanaka
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Tanabe
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Maréchal
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XM
Okada
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S
Kitamura
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