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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TUPMP031 |
Research on Secondary Electron Emission Characteristics of Diamond-like Carbon Thin Films |
1306 |
SUSPFO081 |
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- Y.X. Zhang, X.Q. Ge, W. Li, J.Q. Shao, S. Wang, Y.G. Wang, Y. Wang, W. Wei, B. Zhang, B.L. Zhu
USTC/NSRL, Hefei, Anhui, People’s Republic of China
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In modern particle accelerators, the build-up of electron cloud is a main limiting factor for the achievement of high-quality beam. Among the techniques to mitigate it, coating the internal walls of the beam pipes with a thin film which has a low secondary electron yield (SEY) is considered to be one of the most effective means. From several earlier studies, it was found that diamond-like carbon (DLC) thin films are potential coatings. This paper is mainly about the research on secondary electron emission characteristics of DLC thin films. The secondary electron emission (SEE) tests were done at temperature of 298 K and vacuum pressure of 2×10-9 Torr. Here, we obtained the characteristics of the SEE from DLC film coatings with different thickness under ultrahigh-vacuum (UHV) conditions. The maximum secondary electron yield (SEY), δmax, of the DLC thin films under different primary electron doses were also obtained, respectively.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2019-TUPMP031
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About • |
paper received ※ 26 April 2019 paper accepted ※ 22 May 2019 issue date ※ 21 June 2019 |
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THPTS045 |
Preparation of Titanum-Zirconium-Vanadium Films by Quantitative Deposition |
4210 |
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- J.Q. Shao, C. Chen, X.Q. Ge, W. Li, S. Wang, Y. Wang, W. Wei, B. Zhang, Y.X. Zhang, B.L. Zhu
USTC/NSRL, Hefei, Anhui, People’s Republic of China
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TiZrV has been used in vacuum technology and electric vacuum devices due to its high pumping speed and low activation temperature in recent years. At the same time, many preparation methods have been developed. Different from the current coating method of magnetron sputtering, this paper discusses the preparation of thin film coating from the viewpoint of vacuum sintering, which is flexible in design and more suitable for operation. Based on the analysis of the surface morphology of the sintered film, the feasibility and operability of the experimental method were explored from the surface compactness of the getter.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2019-THPTS045
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About • |
paper received ※ 25 April 2019 paper accepted ※ 22 May 2019 issue date ※ 21 June 2019 |
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