An insertion device for the soft X-ray photochemistry beamline at SPring-8

A figure‐8 undulator is an insertion device (ID) proposed at SPring‐8 to reduce the heat‐load problems encountered with ordinary linear undulators. This device is useful when the K value is high in order to obtain low‐energy photons as the fundamental of the undulator radiation. It has therefore bee...

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Bibliographic Details
Published in:Journal of synchrotron radiation 1998-05, Vol.5 (3), p.459-461
Main Authors: Tanaka, Takashi, Maréchal, Xavier-Marie, Hara, Toru, Tanabe, Toshiya, Kitamura, Hideo
Format: Article
Language:English
Subjects:
low heat loads
undulators
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Summary:A figure‐8 undulator is an insertion device (ID) proposed at SPring‐8 to reduce the heat‐load problems encountered with ordinary linear undulators. This device is useful when the K value is high in order to obtain low‐energy photons as the fundamental of the undulator radiation. It has therefore been adopted as the ID for the soft X‐ray photochemistry beamline (BL27SU) at SPring‐8 because linearly polarized photons between 100 and 2000 eV are necessary for the experiments on this beamline. The figure‐8 undulator for BL27SU is now under construction and, in the first phase of operation, is expected to cover the energy range down to 500 eV. In the second and third phases, the lowest energy may be reduced to 170 and 100 eV, respectively.
ISSN:1600-5775
0909-0495
1600-5775
DOI:10.1107/S0909049597013733