Development of an insertion device selectively operational as a helical/figure-8 undulator
| Autor: | Takashi Tanaka, Takamitsu Seike, Akihiro Kagamihata, Hideki Aoyagi, Tomoya Kai, Mutsumi Sano, Sunao Takahashi, Masaki Oura |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Journal of Synchrotron Radiation, Vol 30, Iss 2, Pp 301-307 (2023) |
| Druh dokumentu: | article |
| ISSN: | 1600-5775 16005775 |
| DOI: | 10.1107/S1600577522011997 |
| Popis: | An insertion device capable of switching the operation mode between helical and figure-8 undulators, and thus referred to as a helical-8 undulator, has been developed. It has the advantage that the on-axis heat load can be kept low regardless of the polarization state, even when a high K value is required to lower the fundamental photon energy. This is in contrast to conventional undulators in which the on-axis heat load tends to be significantly high to generate linearly polarized radiation with a high K value, and optical elements can be seriously damaged. The principle of operation, specification and light source performance of the developed helical-8 undulator are presented together with further options to enhance its capability. |
| Databáze: | Directory of Open Access Journals |
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