Paper |
Title |
Page |
TUPMP029 |
Establishing a Laser Treatment to Suppress the Secondary Electron Emission |
1303 |
SUSPFO071 |
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- Y.G. Wang, X.Q. Ge, X.T. Pei, S.W. Wang, Y. Wang, B. Zhang, B.L. Zhu
USTC/NSRL, Hefei, Anhui, People’s Republic of China
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Laser treatment has a significant inluent on suppressing the secondary electron emission(SEE). The new synchrotron radiation light source, the Hefei Advanced Light Source(HALS) has a strict requirement on the SEE. In this paper, we used a 355nm laser to process copper sample. After the laser treatment, the secondary electron yield(SEY) reduced from 2.05 to 0.86. We used the scanning electron microscope(SEM) to analysis the surface of sample after the laser treatment.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2019-TUPMP029
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About • |
paper received ※ 30 April 2019 paper accepted ※ 22 May 2019 issue date ※ 21 June 2019 |
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WEPTS103 |
Optimization of a Low-Alpha Lattice for the HLS-II Storage Ring |
3360 |
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- S.W. Wang, Y.G. Wang, W. Xu, K. Xuan
USTC/NSRL, Hefei, Anhui, People’s Republic of China
- J.Y. Li
IHEP, Beijing, People’s Republic of China
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To generate terahertz radiation at HLS-II, a low-alpha lattice scheme is proposed. The new lattice can reduce the bunch length in the storage ring, thus enhancing the coherent synchrotron radiation in the THz region. In this paper, the design and optimization of a low-alpha lattice is reported. The new lattice preserves the symmetry of nominal lattice and reduces the first and second order momentum factor at the cost of increasing maximum beta function and natural emittance. The bunch length is tracked and the result shows that the low-alpha lattice can effectively compress bunches in the storage ring. The performance of this low-alpha lattice can be further studied and improved.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2019-WEPTS103
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|
About • |
paper received ※ 29 April 2019 paper accepted ※ 22 May 2019 issue date ※ 21 June 2019 |
|
Export • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
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