Radiation of SPring-8 very long undulators

A key feature of the SPring-8 storage ring is the presence of four 30 m long straight sections for the installation of very long insertion devices. Two characteristics of very long undulators are presented here: first, the problems brought by the necessity to phase the individual segments, which in...

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Bibliographic Details
Published inNuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 467; pp. 134 - 137
Main Authors Maréchal, X.-M., Bizen, T., Hara, T., Seike, T., Tanaka, T., Kitamura, H.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 21.07.2001
Subjects
Near-field
Phasing
Near-field
41.60
Phasing
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Summary:A key feature of the SPring-8 storage ring is the presence of four 30 m long straight sections for the installation of very long insertion devices. Two characteristics of very long undulators are presented here: first, the problems brought by the necessity to phase the individual segments, which in turn, imposed the use of the in-vacuum technology; next, the near-field effects which appear on-axis as these undulators length is comparable to the distance between the observation point and the source.
ISSN:0168-9002
1872-9576
DOI:10.1016/S0168-9002(01)00235-2