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CERN Document Server Znaleziono 133 rekordów  1 - 10następnykoniec  skocz do rekordu: Szukanie trwało 1.07 sekund. 
1.
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
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2.
Geometry Optimization for a Quadrupole Resonator at Jefferson Lab / Bira, Sarra (Jefferson Lab) ; Ge, Mingqi (Jefferson Lab) ; Valente-Feliciano, Anne-Marie (Jefferson Lab) ; Vega Cid, Lorena (CERN) ; Venturini Delsolaro, Walter (CERN)
The quadrupole resonator (QPR) is a sample characterization tool to measure the RF properties of superconducting materials using the calorimetry method at different temperatures, magnetic fields, and frequencies. Such resonators are currently operating at CERN and HZB but suffer from Lorentz force detuning and modes overlapping, resulting in higher uncertainties in surface resistance measurement. [...]
2023 - 4 p. - Published in : JACoW SRF 2023 (2023) WEPWB048 Fulltext: PDF;
In : 21st International Conference on Radio-Frequency Superconductivity (SRF 2023), Grand Rapids, MI, United States, 22 - 30 Jun 2023, pp.WEPWB048
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3.
Temperature measurement on copper surfaces for superconducting thin film cavity applications / Bianchi, Antonio (CERN) ; Vandoni, Giovanna (CERN) ; Venturini Delsolaro, Walter (CERN)
Superconducting radio-frequency (SRF) thin film cavities on copper substrates are employed in several particle accelerators. However, these SRF cavities historically featured a progressive performance degradation with the accelerating field that is still not completely understood. [...]
arXiv:2304.14229.- 2023-09-27 - 12 p. - Published in : Meas. Sci. Technol. 35 (2024) 015901 Fulltext: Publication - PDF; 2304.14229 - PDF;
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Accelerator Technology Challenges Part 2 - 2/2 / Venturini Delsolaro, Walter (speaker) (CERN)
2023 - 3069. Summer Student Lecture Programme 2023; Summer Student Lecture Programme 2023 External links: Talk details; Event details In : Summer Student Lecture Programme 2023
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Accelerator Technology Challenges Part 2 - 1/2 / Venturini Delsolaro, Walter (speaker) (CERN)
2023 - 3246. Summer Student Lecture Programme 2023; Summer Student Lecture Programme 2023 External links: Talk details; Event details In : Summer Student Lecture Programme 2023
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6.
Temperature Mapping on a Niobium-Coated Copper Superconducting Radio-Frequency Cavity / Bianchi, Antonio (CERN) ; Venturini Delsolaro, Walter (CERN)
Since the late '80s, CERN has pioneered the development of niobium thin film radio-frequency (RF) cavities deposited on copper substrates for several particle accelerator applications. However, niobium thin film cavities historically feature a progressive performance degradation as the accelerating field increases. [...]
arXiv:2305.09597.- 2023-10-10 - 15 p. - Published in : Sci. Rep. 13 (2023) 17075 Fulltext: document - PDF; 2305.09597 - PDF;
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7.
Progress and R/D challenges for FCC-ee SRF / Venturini Delsolaro, W (CERN) ; Garlasche, M (CERN) ; Peauger, F (CERN) ; Rosaz, G (CERN) ; Karpov, I (CERN) ; Zhang, L (Beijing, Inst. High Energy Phys.) ; Valente Feliciano, A M (Jefferson Lab) ; Udongwo, S A (Rostock U.) ; Bianchi, A (CERN) ; Bellini, G (CERN) et al.
The FCC-ee machines present a huge challenge for the RF systems, which need to be adapted to very diverse beam conditions going from moderate energy and high current for the Z machine to high energy and low beam current for the ttbar. This inverse scaling results naturally from a fixed budget for the synchrotron radiation, which the SRF cavities need to compensate. [...]
2023 - 13 p. - Published in : EPJ Tech. Instrum. 10 (2023) 6 Fulltext: PDF;
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8.
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
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9.
Main Highlights of ARIES WP15 Collaboration / Malyshev, Oleg (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Antoine, Claire (IRFU, Saclay) ; Azzolini, Oscar (INFN, Legnaro) ; Burt, Graeme (Cockcroft Inst. Accel. Sci. Tech. ; Lancaster U. (main)) ; Chyhyrynets, Eduard (INFN, Legnaro) ; Goudket, Philippe (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Keppel, Giorgio (INFN, Legnaro) ; Kugeler, Oliver (Helmholtz-Zentrum, Berlin) ; Leith, Stewart (U. Siegen (main)) ; Medvids, Arturs (Riga Tech. U.) et al.
An international collaboration of research teams from CEA (France), CERN (Switzerland), INFN/LNL (Italy), HZB and USI (Germany), IEE (Slovakia), RTU (Latvia) and STFC/DL (UK), are working together on better understanding of how to improve the properties of superconducting thin films (ScTF) for RF cavities. The collaboration has been formed as WP15 in the H2020 ARIES project funded by EC. [...]
2022 - 5 p. - Published in : JACoW SRF 2021 (2022) 571-575 Fulltext: PDF;
In : 20th International Conference on RF Superconductivity (SRF 2021), Online, US, 28 Jun - 2 Jul 2021, pp.571-575
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10.
Thermal Mapping Studies on Nb/Su SRF Cavities / Bianchi, Antonio (CERN) ; Chiodini, Marco (CERN) ; Vandoni, Giovanna (CERN) ; Venturini Delsolaro, Walter (CERN)
A thermal mapping system is one of the most useful diagnostic tools to identify the mechanisms responsible of performance degradation in superconducting radio frequency (SRF) cavities. Unlike most of the thermal mapping systems currently in operation, we want to develop a system for mapping copper coated SRF cavities. [...]
2022 - 5 p. - Published in : JACoW SRF 2021 (2022) 796-800 Fulltext: PDF;
In : 20th International Conference on RF Superconductivity (SRF 2021), Online, US, 28 Jun - 2 Jul 2021, pp.796-800
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