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| TUOCB02 |
Low Secondary Electron Yield of Laser Treated Surfaces of Copper, Aluminium and Stainless Steel |
1089 |
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- R. Valizadeh, P. Goudket, O.B. Malyshev, B.S. Sian, S. Wang
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
- M.D. Cropper, S. Wang
Loughborough University, Loughborough, Leicestershire, United Kingdom
- P. Goudket
Cockcroft Institute, Warrington, Cheshire, United Kingdom
- B.S. Sian
UMAN, Manchester, United Kingdom
- N. Sykes
Micronanics Laser Solution Center, Didcot, United Kingdom
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Funding: STFC
Reduction of SEY was achieved by surface engineering through laser ablation with a laser operating at • = 355 nm. It was shown that the SEY can be reduced to near or below 1 on copper, aluminium and 316LN stainless steel. The laser treated surfaces show an increased surface resistance, with a wide variation in resistance found de-pending on the exact treatment details. However, a treated copper surface with similar surface resistance to aluminium was produced.
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Slides TUOCB02 [94.339 MB]
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| DOI • |
reference for this paper
※ DOI:10.18429/JACoW-IPAC2016-TUOCB02
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| THPMY016 |
Graphene Coating for the Reduction of the Secondary Electron Yield |
3688 |
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- B.S. Sian, G.X. Xia, G.L. Yu
UMAN, Manchester, United Kingdom
- I. Kinloch, L. Lin, V. Valles
University of Manchester, Manchester, United Kingdom
- O.B. Malyshev, R. Valizadeh
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
- O.B. Malyshev, R. Valizadeh, G.X. Xia
Cockcroft Institute, Warrington, Cheshire, United Kingdom
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Secondary electron emission is a limiting factor for a performance of many instruments ranging from small gauges and detectors to waveguides and charged particle accelerators. There have been several methods of reducing this effect, e.g. the method of using a material with a low Secondary Electron Yield (SEY) or thin film coating with such a low SEY material. This paper describes the effect of SEY mitigation with graphene coatings on aluminium substrate. The maximum SEY (dmax) was decreased from 2.4 for bare aluminium to 1.4 with a graphene coating. Measurements were taken using an electron gun and a Faraday cup, the electron energies varied between 80 eV and 1 keV with a bias of -18 V on the sample. Other biases of -3, -5, -9, -25, -50 and -75 V were also tested however there was no effect on the SEY.
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| DOI • |
reference for this paper
※ DOI:10.18429/JACoW-IPAC2016-THPMY016
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| Export • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
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