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CERN Document Server 2,050 ჩანაწერია ნაპოვნი  1 - 10შემდეგიდასასრული  ჩანაწერთან გადასვლა: ძიებას დასჭირდა 0.69 წამი. 
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Seamless 1.3 GHz Copper Cavities for Nb Coatings: Cold Test Results of Two Different Approaches / Vega Cid, Lorena (CERN) ; Atieh, Said (CERN) ; Ferreira, Leonel (CERN) ; Laín-Amador, Lucia (CERN) ; Leith, Stewart (CERN) ; Pereira Carlos, Carlota (CERN) ; Rosaz, Guillaume (CERN) ; Scibor, Karol (CERN) ; Venturini Delsolaro, Walter (CERN) ; Vidal García, Pablo (CERN ; Madrid, CIEMAT)
A necessary condition for high SRF performances in thin film coated cavities is the absence of substrate defects. For instance, in the past, defects originated around electron beam welds in high magnetic field areas have been shown to be the cause of performance limitations in Nb/Cu cavities. [...]
2022 - 5 p. - Published in : JACoW SRF 2021 (2022) 498-502 Fulltext: PDF;
In : 20th International Conference on RF Superconductivity (SRF 2021), Online, US, 28 Jun - 2 Jul 2021, pp.498-502
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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CERN Based $T_{c}$ Measurement Station for Thin-Film Coated Copper Samples and Results on Related Studies / Fonnesu, Dorothea (CERN ; Siegen U.) ; Bremer, Johan (CERN) ; Koettig, Torsten (CERN) ; Laín-Amador, Lucia (CERN) ; Pereira Carlos, Carlota (CERN) ; Rosaz, Guillaume (CERN) ; Vaaranta, Antti (Helsinki U.)
In the framework of the Future Circular Collider (FCC) Study, the development of thin-film coated superconducting radio-frequency (SRF) cavities capable of providing higher accelerating fields (10 to 20 MV/m against 5 MV/m of LHC) represents a major challenge. The development of a test stand commissioned at CERN for the inductive measurement of the critical temperature (T$_{c}$c) of SC thin-film deposited on copper samples for SRF application is presented in this work. [...]
2022 - 4 p. - Published in : JACoW SRF 2021 (2022) 105-108 Fulltext: PDF;
In : 20th International Conference on RF Superconductivity (SRF 2021), Online, US, 28 Jun - 2 Jul 2021, pp.105-108
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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Results of the R&D; RF Testing Campaign of 1.3 GHz Nb/Cu Cavities / Vega Cid, Lorena (CERN) ; Bellini, Gloria (CERN) ; Bianchi, Antonio (CERN) ; Ferreira, Leonel (CERN) ; Leith, Stewart (CERN) ; Pereira Carlos, Carlota (CERN) ; Rosaz, Guillaume (CERN) ; Venturini Delsolaro, Walter (CERN)
In the context of the R&D; program on Nb/Cu carried out at CERN, a total of 25 tests have been performed since 2021. This talk will present these results. [...]
2023 - 6 p. - Published in : JACoW SRF 2023 (2023) 621-626 Fulltext: PDF;
In : 21st International Conference on Radio-Frequency Superconductivity (SRF 2023), Grand Rapids, MI, United States, 22 - 30 Jun 2023, pp.621-626
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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Development and characterisation of advanced coatings for high energy physics applications / Perez Fontenla, Ana Teresa (CERN) ; Pereira Carlos, Carlota (CERN) ; Leith, Stewart (CERN) ; Moros, Alice (CERN) ; Pfeiffer, Stephan (CERN) ; Rodriguez-Castro, Enrique (CERN) ; Rosaz, Guillaume (CERN)
The Future Circular Collider (FCC) study develops the technologies for next generation high performance particle colliders and accelerating structures. It places high requirements on the performance of Superconducting Radio Frequency (SRF) cavities used to accelerate the particle beam. [...]
2023 - 4 p. - Published in : JACoW IPAC 2023 (2023) WEPA150 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.WEPA150
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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Planar deposition of Nb thin films by HiPIMS for superconducting radiofrequency applications / Carlos, Carlota P A (CERN ; U. Geneva (main)) ; Leith, Stewart (CERN) ; Rosaz, Guillaume (CERN) ; Pfeiffer, Stephan (CERN) ; Senatore, Carmine (U. Geneva (main))
Cost efficiency and sustainability are critical challenges for future accelerator machines. Nb-coated Cu (Nb/Cu) superconducting radiofrequency (SRF) accelerating cavities, while requiring R&D; to meet high acceleration gradient performance standards, show potential for addressing these challenges. [...]
2024 - 12 p. - Published in : Vacuum 227 (2024) 113354 Fulltext: PDF;
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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Developments on SRF coatings at CERN / Sublet, Alban (CERN) ; Aull, Sarah (CERN) ; Bártová, Barbora (CERN) ; Calatroni, Sergio (CERN) ; Richard, Thibaut (CERN) ; Rosaz, Guillaume (CERN) ; Taborelli, Mauro (CERN) ; Therasse, Mathieu (CERN) ; Venturini Delsolaro, Walter (CERN) ; Zhang, Pei (CERN)
The thin films techniques applied to Superconducting RF (SRF) has a long history at CERN. A large panel of cavities have been coated from LEP, to LHC. [...]
2015 - 5 p. - Published in : 10.18429/JACoW-SRF2015-TUPB027 Fulltext: PDF;
In : 17th International Conference on RF Superconductivity, Whistler, Canada, 13 - 18 Sep 2015, pp.TUPB027
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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Design of a compact superconducting crab-cavity for LHC using Nb-on-Cu-coating technique / Grudiev, Alexej (CERN) ; Atieh, Said (CERN) ; Calaga, Rama (CERN) ; Calatroni, Sergio (CERN) ; Capatina, Ofelia (CERN) ; Carra, Federico (CERN) ; Favre, Gilles (CERN) ; Ferreira, Leonel (CERN) ; Poncet, Jean-Francois (CERN) ; Richard, Thibaut (CERN) et al.
The design of a compact superconducting crab-cavity for LHC using Nb-on-Cu-coating technique is presented. The cavity shape is based on the ridged waveguide resonator with wide open apertures to provide access to the inner surface of the cavity for coating. [...]
2015 - 5 p. - Published in : 10.18429/JACoW-SRF2015-THPB048 Fulltext: PDF;
In : 17th International Conference on RF Superconductivity, Whistler, Canada, 13 - 18 Sep 2015, pp.THPB048
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
8.
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Reverse coating technique for the production of Nb thin films on copper for superconducting radio-frequency applications / Fonnesu, D (CERN) ; Baris, A (CERN) ; Calatroni, S (CERN) ; Lain Amador, L (CERN) ; Pfeiffer, S (CERN) ; Rosaz, G (CERN) ; Bonura, M (U. Geneva (main)) ; Senatore, C (U. Geneva (main))
In the framework of the Future Circular Collider Study, the development of thin-film coated superconducting radio-frequency copper cavities capable of providing higher accelerating fields (10–20 MV m$^{−1}$ against 5 MV m$^{−1}$ for the Large Hadron Collider) represents a major challenge. The method investigated here for the production of seamless niobium-coated copper cavities is based on the electroforming of the copper structure around a sacrificial aluminium mandrel that is pre-coated with a niobium thin film. [...]
2022 - 11 p. - Published in : Supercond. Sci. Technol. 35 (2022) 125003 Fulltext: PDF;
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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Thickness effect on superconducting properties of niobium films for radio-frequency cavity applications / Bianchi, Antonio (INFN, Milan) ; Bonura, Marco (U. Geneva (main)) ; Carlos, Carlota P.A. (U. Geneva (main) ; CERN) ; Leith, Stewart (CERN) ; Rosaz, Guillaume (CERN) ; Senatore, Carmine (U. Geneva (main)) ; Venturini Delsolaro, Walter (CERN)
Niobium-coated copper radio-frequency cavities are cost-effective alternatives to bulk niobium cavities, given the lower material costs of copper substrates and their operation in liquid helium at around 4.2 K. However, these cavities historically exhibited a gradual degradation in performance with the accelerating field. [...]
arXiv:2403.11245.- 2024-06-27 - 10 p. - Published in : Supercond. Sci. Technol. 37 (2024) 085005 Fulltext: 2403.11245 - PDF; Publication - PDF;
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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Enhanced radio-frequency performance of niobium films on copper substrates deposited by high power impulse magnetron sputtering / Arzeo, M (CERN) ; Avino, F (CERN ; Ecole Polytechnique, Lausanne) ; Pfeiffer, S (CERN) ; Rosaz, G (CERN) ; Taborelli, M (CERN) ; Vega-Cid, L (CERN) ; Venturini-Delsolaro, W (CERN)
We present a study of radio frequency properties of niobium films deposited on copper by two different approaches based on High Power Impulse Magnetron Sputtering, namely with a DC voltage biased substrate and with bipolar target voltage. Such approaches enable the synthesis of dense superconducting (SC) layers. [...]
2022 - 9 p. - Published in : Supercond. Sci. Technol. 35 (2022) 054008 Fulltext: PDF;
დეტალური ჩანაწერი - მსგავსი ჩანაწერები

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