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APS Upgrade Insertion Device Vacuum Chamber Design |
vacuum, alignment, storage-ring, photon |
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- J.E. Lerch, T.J. Bender, O.K. Mulvany, M.E. Szubert
ANL, Lemont, Illinois, USA
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A straight section vacuum system (nominally 5.363 meters long) has been designed for the APS upgrade project. This vacuum system will be used in straight sections equipped with hybrid permanent magnet undulators (HPMU). The vacuum system assembly consists of the insertion device vacuum chamber (IDVC), the vacuum chamber distributed support, and the photon absorber. Numerous functional requirements constrained the IDVC design. These constraints included incorporation of the beam aperture transition into the end of the aluminium vacuum chamber extrusion (storage ring aperture to IDVC aperture), thin walls (~600 microns) surrounding the beam aperture to allow for as small a magnetic gap as possible, and complicated weld paths to ensure a continuous beam surface to minimize impedance. Additionally, extensive FEA and raytrace analysis were performed to ensure that the chamber would not fail due to structural or thermal perturbations.
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Poster TUPLS02 [3.816 MB]
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-NAPAC2019-TUPLS02
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| About • |
paper received ※ 26 August 2019 paper accepted ※ 31 August 2019 issue date ※ 08 October 2019 |
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