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@inproceedings{zhang:ipac2021-mopab382,
author = {X.Y. Zhang and Z.Q. Li and Q. Ma and P. Zhang},
title = {{Synchrotron Light Shielding for the 166 MHz Superconducting RF Section at High Energy Photon Source}},
booktitle = {Proc. IPAC'21},
pages = {1169--1172},
eid = {MOPAB382},
language = {english},
keywords = {cavity, shielding, synchrotron, storage-ring, radiation},
venue = {Campinas, SP, Brazil},
series = {International Particle Accelerator Conference},
number = {12},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2021},
issn = {2673-5490},
isbn = {978-3-95450-214-1},
doi = {10.18429/JACoW-IPAC2021-MOPAB382},
url = {https://jacow.org/ipac2021/papers/mopab382.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-MOPAB382},
abstract = {{The High Energy Photo Source (HEPS) project has been under construction since 2019, and will be first diffraction-limited synchrotron light source in China. A 6 GeV electron beam with 200 mA current will be stored in the main ring. If synchrotron light produced from this energetic electron beam hits the superconducting cavity’s surface, it would cause thermal breakdown of the superconductivity. In the current lattice design, these lights cannot be fully blocked by the collimator in the upstream lattice cell, therefore a shielding scheme inside the rf section is required. This however brings great challenges to the already limited space. The design of the collimator has been focused on fulfilling shielding requirements while optimizing beam impedance, synchrotron light power density, thermal and mechanical stabilities. Shielding materials are subsequently chosen with dedicated cooling to ensure long-term stable operations. In this paper, a shielding scheme inside the rf section of the HEPS storage ring is presented. The synchrotron light mainly from the upstream bending magnet is successfully block. The sensitivity to beam position movement and installation error is also analyzed.}},
}