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CERN Document Server 2,022 elementer funnet  1 - 10nesteslutt  gå til element: Søket tok 0.52 sekunder. 
1.
(100)
The impact of H$_2$ and N$_2$ on the material properties and secondary electron yield of sputtered amorphous carbon films for anti-multipacting applications / Fernández, H Moreno (CERN) ; Himmerlich, M (CERN) ; Costa Pinto, P (CERN) ; Coroa, J (CERN) ; Sousa, D (Nova U., Lisboa) ; Baris, A (CERN) ; Taborelli, M (CERN)
Amorphous carbon thin films were prepared by direct current hollow cathode sputter deposition in Ar discharge with the injection of small amounts of H$_2$ and/or N$_2$. The influence of these additives on the film properties with particular focus on the application as a coating for electron cloud mitigation in particle accelerators is characterized by optical spectroscopy, X-ray photoelectron spectroscopy, and secondary electron yield (SEY) measurements. [...]
2021 - 10 p. - Published in : Appl. Surf. Sci. 542 (2021) 148552
Detaljert visning - Lignende elementer
2.
(91)
Carbon Coatings with Low Secondary Electron Yield / Taborelli, M (CERN) ; Colaux, J (Namur U.) ; Costa Pinto, P (CERN) ; Calatroni, S (CERN) ; Chiggiato, P (CERN) ; Edwards, P (CERN) ; Letant-Delrieux, D (CERN) ; Lucas, S (Namur U.) ; Neupert, H (CERN) ; Vollenberg, W (CERN) et al.
Carbon thin films for electron cloud mitigation and anti-multipacting applications have been prepared by dc magnetron sputtering in both neon and argon discharge gases and by plasma enhanced chemical vapour deposition (PECVD) using acetylene. The thin films have been characterized using Secondary Electron Yield (SEY) measurements, Scanning Electron Microscopy (SEM), Nuclear Reaction Analysis (NRA) and X-ray Photoelectron Spectroscopy (XPS). [...]
CERN-ATS-2012-287.- Geneva : CERN, 2013 - 31 p. - Published in : Vacuum 98 (2013) 29-36 Fulltext: PDF;
In : 14th Joint Vacuum Conference - 12th European Vacuum Conference - 11th Annual Meeting of the German Vacuum Society - 19th Croatian - Slovenian Vacuum Meeting, Dubrovnik, Croatia, 4 - 8 Jun 2012, pp.29-36
Detaljert visning - Lignende elementer
3.
(53)
Coldex: A tool to study cold surfaces in accelerators / Baglin, V (CERN)
With the advent of more and more accelerator machines based on superconducting technology, the detailed understanding of the cryogenic vacuum system is of primary importance for the design and operation of modern machines. COLDEX was built to study the beam / cold surfaces interactions in LHC in the context of the electron cloud build-up. [...]
2020 - 14 p. Fulltext from publisher: PDF;
In : ECLOUD’18: Proceedings of the Joint INFN-CERN-ARIES Workshop on Electron-Cloud Effects, La Biodola, Isola d'Elba, Italy, 3 - 7 Jun 2018, pp.165-178 (CERN-2020-007)
Detaljert visning - Lignende elementer
4.
(42)
Amorphous carbon thin films: Mechanisms of hydrogen incorporationduring magnetron sputtering and consequences for the secondary electronemission / Adame, C F ; Alves, E (Lisbon, IST) ; Barradas, N P (Lisbon, IST) ; Costa Pinto, P (CERN) ; Delaup, Y (CERN) ; Ferreira, I M M ; Neupert, H (CERN) ; Himmerlich, M (CERN) ; Pfeiffer, S (CERN) ; Rimoldi, M (CERN) et al.
Amorphous carbon (a-C) films, having low secondary electron yield (SEY), are usedat CERN to suppress electron multipacting in the beam pipes of particleaccelerators. It was already demonstrated that hydrogen impurities increase theSEY of a-C films. [...]
2023 - 14 p. - Published in : J. Vac. Sci. Technol. A 41 (2023) 043412 Fulltext: PDF;
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5.
(26)
Thin Film Coatings for Suppressing Electron Multipacting in Particle Accelerators / Costa Pinto, P (CERN) ; Calatroni, S (CERN) ; Chiggiato, P (CERN) ; Neupert, H (CERN) ; Shaposhnikova, E N (CERN) ; Taborelli, M (CERN) ; Vollenberg, W (CERN) ; Yin Vallgren, C (CERN)
Thin film coatings are an effective way for suppressing electron multipacting in particle accelerators. For bakeable beam pipes, the TiZrV Non Evaporable Getter (NEG) developed at CERN can provide a Secondary Electron Yield (SEY) of 1.1 after activation at 180oC (24h). [...]
2011 External link: Published version from JACoW
In : 2011 Particle Accelerator Conference, New York City, NY, USA, 28 Mar - 1 Apr 2011, pp.THOBS6
Detaljert visning - Lignende elementer
6.
(25)
Implementation of Carbon Thin Film Coatings in the Super Proton Synchrotron (SPS) for Electron Cloud Mitigation / Costa Pinto, P (CERN) ; Bellunato, A (CERN) ; Basso, T (CERN) ; Edwards, P (CERN) ; Mensi, M (CERN) ; Sublet, A (CERN) ; Taborelli, M (CERN)
Low Secondary Electron Yield (SEY) carbon thin films eradicate electron multipacting in accelerator beam pipes. Two magnetic cells of the SPS were coated with such material and installed. [...]
CERN-ACC-2014-0265.- Geneva : CERN, 2014 - 5 p. Fulltext: PDF; External link: Published version from JaCoW
In : 5th International Particle Accelerator Conference, Dresden, Germany, 15 - 20 Jun 2014, pp.2574
Detaljert visning - Lignende elementer
7.
(25)
Minimum thickness of carbon coating for multipacting suppression / Angelucci, M (LNF, Dafne Light) ; Novelli, A (LNF, Dafne Light ; U. Rome La Sapienza (main)) ; Spallino, L (LNF, Dafne Light) ; Liedl, A (LNF, Dafne Light) ; Larciprete, R (ISC, Rome ; LNF, Dafne Light) ; Cimino, R (LNF, Dafne Light ; CERN)
We performed a combined secondary electron yield and x-ray photoelectron spectroscopy study on a prototypical system formed by increasing coverages of amorphous carbon (a-C) deposited on atomically clean Cu. A remarkably thin a-C layer, of about 6–8 nm, is surprisingly enough to lower below 1 the secondary emission yield of the whole system. [...]
2020 - 5 p. - Published in : Phys. Rev. Res. 2 (2020) 032030 Fulltext from publisher: PDF;
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8.
(24)
Recent Experimental Results on Amorphous Carbon Coatings for Electron Cloud Mitigation / Yin Vallgren, C (CERN) ; Calatroni, S (CERN) ; Chiggiato, P (CERN) ; Costa Pinto, P (CERN) ; Neupert, H (CERN) ; Taborelli, M (CERN) ; Rumolo, G (CERN) ; Shaposhnikova, E (CERN) ; Vollenberg, W (CERN)
Amorphous carbon (a-C) thin films, produced in different coating configurations by using DC magnetron sputtering, have been investigated in laboratory for low secondary electron yield (SEY) applications. [...]
CERN-ATS-2011-192. - 2011. - 8 p.
Fulltext
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9.
(23)
Low Secondary Electron Yield Carbon Coatings for Electron Cloud Mitigation in Modern Particle Accelerators / Yin Vallgren, Christina
In order to upgrade the Large Hadron Collider (LHC) performance to be oriented towards higher energies and higher intensities in the future, a series of improvements of the existing LHC injectors is planned to take place over the next few years [...]
CERN-THESIS-2011-063 - Goteborg : Chalmers U. Tech., 2011. - 172 p.

Fulltext
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10.
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The Electronic Transport Mechanism In Amorphous Tetrahedrally-coordinated Carbon Films / Sullivan, J P
SAND-97-1673-C. - 1998.
Records from U.S. DOE Office of Scientific and Technical Information
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