1. Nature of the Decrease of the Secondary-Electron Yield by Electron Bombardment and its Energy Dependence
- Author
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Roberto Cimino, M. Commisso, V. Baglin, Roberto Flammini, D. R. Grosso, Rosanna Larciprete, T. Demma, Laboratori Nazionali di Frascati (LNF), Istituto Nazionale di Fisica Nucleare (INFN), Dept. Accelerateurs, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and European Organization for Nuclear Research (CERN)
- Subjects
GRAPHITE ,Materials science ,Large Hadron Collider ,010308 nuclear & particles physics ,[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph] ,General Physics and Astronomy ,Electron ,Kinetic energy ,01 natural sciences ,7. Clean energy ,Secondary electrons ,C1S PHOTOEMISSION ,X-ray photoelectron spectroscopy ,Yield (chemistry) ,0103 physical sciences ,Electron dose ,SPECTRA ,Physics::Accelerator Physics ,Atomic physics ,010306 general physics ,Electron bombardment ,CLOUD SIMULATIONS - Abstract
We performed a combined secondary electron yield (SEY) and x-ray photoelectron spectroscopy study as a function of the electron dose and energy on a Cu technical surface representative of the LHC accelerator walls. The electron bombardment is accompanied by a clear chemical modification, indicating an increased graphitization as the SEY decreases. The decrease in the SEY is also found to depend significantly on the kinetic energy of the primary electrons. When low-energy primary electrons are employed (E
- Published
- 2012
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