Secondary electron yield on cryogenic surfaces as a function of physisorbed gases
نویسندگان
چکیده
منابع مشابه
EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN - ACCELERATORS AND TECHNOLOGY SECTOR Secondary Electron Yield on Cryogenic Surfaces as a Function of Physisorbed Gases
Electron cloud is a serious limitation for the operation of particle accelerators with intense positively charged beams. It occurs if the secondary electron yield (SEY) of the beam-pipe surface is sufficiently high to induce an electron multiplication. At low surface temperatures, the SEY is strongly influenced by the nature of the physisorbed gases and by the corresponding surface coverage. Th...
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Influence of the Electric Field on Secondary Electron Emission Yield
We present results of the investigation of secondary electron emission from spherical amorphous carbon grains of 3 to 6 micrometers in diameter affected by a high surface field. In our experiment, we have applied a technique based on levitation of a single charged grain in the quadrupole trap. This grain was charged by an electron beam with an energy tunable up to 10 keV. During this process, t...
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...................................................................................................................... iii LIST OF FIGURES ............................................................................................................ v LIST OF TABLES............................................................................................................. ix ACKNOWLEDGEMENTS.......
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ژورنال
عنوان ژورنال: Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films
سال: 2012
ISSN: 0734-2101,1520-8559
DOI: 10.1116/1.4736552