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CERN Document Server 2,043 záznamov nájdených  1 - 10ďalšíkoniec  skoč na záznam: Hľadanie trvalo 0.31 sekúnd. 
1.
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Efficient Combination of Surface Texturing and Functional Coating for Very Low Secondary Electron Yield Surfaces and Rough Nonevaporable Getter Films / Himmerlich, Marcel (CERN) ; Zanin, Danilo A (CERN) ; Taborelli, Mauro (CERN) ; Granadeiro Costa, Angelo Rafael (CERN) ; Costa Pinto, Pedro (CERN) ; Lain Amador, Lucia (CERN) ; Vollenberg, Wilhelmus (CERN) ; Baris, Adrienn (CERN) ; Garcia‐Tabares Valdivieso, Elisa (CERN ; Carlos III U., Madrid) ; Perez Fontenla, Ana Teresa (CERN) et al.
The formation of a fissured copper surface by picosecond pulsed laser irradiation is combined with functional coatings consisting of Ti and amorphous carbon layers or a Ti–Zr–V compound film to fabricate surfaces with the maximum of the secondary electron yield being as low as 0.4. By structural and spectroscopic analysis of the formed surfaces it is demonstrated that both coatings enclose the nanostructures generated by redeposition of metal structures from the laser-induced plasma plume, keeping the initial topography intact. [...]
2022 - 8 p. - Published in : Advanced Materials Interfaces 10 (2022) 2201671 Fulltext: PDF;
Úplný záznam - Podobné záznamy
2.
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Role of surface microgeometries on electron escape probability and secondary electron yield of metal surfaces / Bajek, D (U. Dundee) ; Wackerow, S (U. Dundee) ; Zanin, D A (CERN) ; Baudin, L (CERN) ; Bogdanowicz, K (CERN) ; Valdivieso, E Garcia-Tabares (CERN) ; Calatroni, S (CERN) ; Di Girolamo, B (CERN) ; Sitko, M (CERN) ; Himmerlich, M (CERN) et al.
The influence of microgeometries on the Secondary Electron Yield (SEY) of surfaces is investigated. Laser written structures of different aspect ratio (height to width) on a copper surface tuned the SEY of the surface and reduced its value to less than unity. [...]
2020 - 8 p. - Published in : Sci. Rep. 10 (2020) 250 Fulltext: PDF;
Úplný záznam - Podobné záznamy
3.
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Influence of the substrate coating temperature on the vacuum properties of Ti-Zr-V non-evaporable getter films / Costa-Pinto, P ; Benvenuti, Cristoforo ; Chiggiato, P ; Prodromides, A E ; Ruzinov, V
Non-evaporable thin film getters of various compositions have been produced by sputtering. Among about 20 materials which have been studied, the lowest activation temperature (about 180 degree C) has been displayed by a Ti-Zr-V coating obtained from a cathode made of intertwisted elemental wires. [...]
2003 - Published in : Vacuum 71 (2003) 307-315
Úplný záznam - Podobné záznamy
4.
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The secondary electron yield of TiZr and TiZrV non evaporable getter thin film coatings / Scheuerlein, C ; Henrist, Bernard ; Hilleret, Noël (CERN) ; Taborelli, M
The secondary electron yield (SEY) of two different non evaporable getter (NEG) samples has been measured 'as received' and after thermal treatment. The investigated NEGs are TiZr and TiZrV thin film coatings of 1 mm thickness, which are sputter deposited onto copper substrates. [...]
CERN-EST-2000-007-SM.- Geneva : CERN, 2001 - 9 p. - Published in : Appl. Surf. Sci. 172 (2001) 95-102 Access to fulltext document: PDF; - CERN library copies
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5.
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Non-Evaporable Getter Thin Film Coatings for Vacuum Applications / Prodromides, A E
Getters are solid materials capable of chemisorbing gas molecules on their surface: getters are chemical pumps [...]
CERN-THESIS-2002-042 EPFL-THESIS-2652. - Geneva : CERN, 2002. - 168 p.

Source files restricted to CERN users - Access to fulltext document - Access to fulltext document - CERN library copies
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6.
(78)
Lowering the activation temperature of TiZrV non-evaporable getter films [for LHC] / Prodromides, A E ; Scheuerlein, C ; Taborelli, M
In order to reduce the activation temperature of the TiZrV alloy, thin films of various compositions were produced by three-cathode magnetron sputtering on stainless-steel substrates. For the characterisation of the activation behaviour the surface chemical composition has been monitored by Auger electron spectroscopy during specific in situ thermal cycles. [...]
Geneva : CERN, 2001 - Published in : Vacuum 60 (2001) 35-41
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7.
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Cryogenic surface resistance of copper: Investigation of the impact of surface treatments for secondary electron yield reduction / Calatroni, Sergio (CERN) ; Arzeo, Marco (CERN) ; Aull, Sarah (CERN) ; Himmerlich, Marcel (CERN) ; Costa Pinto, Pedro (CERN) ; Vollenberg, Wilhelmus (CERN) ; Di Girolamo, Beniamino (CERN) ; Cruikshank, Paul (CERN) ; Chiggiato, Paolo (CERN) ; Bajek, David (U. Dundee) et al.
The surface resistance of copper samples with an amorphous carbon (a-C) coating or with laser surface structuring, the surface treatments of choice for electron cloud suppression in critical cryogenic sectors of the high-luminosity upgrade of the Large Hadron Collider (HL-LHC), has been measured for the first time at a cryogenic temperature using the quadrupole resonator at CERN. Three different frequencies of relevance for evaluating beam impedance effects, namely, 400, 800, and 1200 MHz, have been investigated. [...]
2019 - 9 p. - Published in : Phys. Rev. Accel. Beams 22 (2019) 063101 Fulltext from Publisher: PDF;
Úplný záznam - Podobné záznamy
8.
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Electron stimulated carbon adsorption in ultra high vacuum monitored by Auger Electron Spectroscopy (AES) / Scheuerlein, C (CERN) ; Taborelli, M (CERN)
Electron stimulated carbon adsorption at room temperature (RT) has been studied in the context of radiation induced surface modifications in the vacuum system of particle accelerators. The stimulated carbon adsorption was monitored by AES during continuous irradiation by 2.5 keV electrons and simultaneous exposure of the sample surface to CO, CO2 or CH4. [...]
CERN-EST-2001-001-SM.- Geneva : CERN, 2001 - 15 p. - Published in : J. Vac. Sci. Technol. A 20 (2002) 93 Access to fulltext document: PDF; - CERN library copies
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9.
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The Activation of Non-evaporable Getters Monitored by AES, XPS, SSIMS and Secondary Electron Yield Measurements / Scheuerlein, C
In this thesis the potential of the three classical surface analysis techniques Auger electron spectroscopy (AES), X-ray photoelectron spectroscopy (XPS) and static secondary ion mass spectrometry (SSIMS) for the characterisation of non-evaporable getter (NEG) materials is assessed and artefacts are [...]
CERN-THESIS-2002-026 - Geneva : CERN, 2002. - 73 p.

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10.
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Ti-Zr-V non-evaporable getter films : from development to large scale production for the Large Hadron Collider / Chiggiato, P ; Costa-Pinto, P
Non-evaporable getter (NEG) alloys after dissolution of their native oxide layer into the bulk are able to pump most of the gases present in ultra-high vacuum systems. The dissolution process, commonly called activation, is obtained by heating in vacuum. [...]
CERN-TS-2006-001.- Geneva : CERN, 2005 - 13 p. - Published in : Thin Solid Films 515 (2006) 382-388 Access to fulltext document: PDF;
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