CERN Accelerating science

Home > Search Results: Ferreira, Leonel
Search Tips
Advanced Search
Add to Search +
Search collections:
Sort by: Display results: Output format:
CERN Document Server 16 records found  1 - 10next  jump to record: Search took 1.42 seconds. 
1.
RF Performance Results of RF Double Quarter Wave Resonators for LHC High Luminosity Project / Turaj, Katarzyna (CERN) ; Bastard, Jeremy (CERN) ; Calaga, Rama (CERN) ; Calvo, Sebastien (CERN) ; Capatina, Ofelia (CERN) ; Castilla, Alejandro (CERN ; Jefferson Lab) ; Chiodini, Marco (CERN) ; Duval, Christophe (CERN) ; Edwards, Amelia (CERN ; Lancaster U.) ; Ferreira, Leonel (CERN) et al.
The LHC High Luminosity (HL-LHC) project includes, among other key items, the installation of superconducting crab cavities in the LHC machine. The Double Quarter Wave (DQW) crab cavity will be utilised to compensate for the effects of the vertical crossing angle [...]
2023 - 7 p. - Published in : JACoW SRF 2023 (2023) 925-928 Fulltext: PDF;
In : 21st International Conference on Radio-Frequency Superconductivity (SRF 2023), Grand Rapids, MI, United States, 22 - 30 Jun 2023, pp.925-928
Detailed record - Similar records
2.
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
Detailed record - Similar records
3.
Thumbnail
Options for surface finishing of beampipes for gravitational wave telescopes / Marques Antunes Ferreira, Leonel (speaker) (CERN)
2023 - 975. Workshops; Beampipes for Gravitational Wave Telescopes 2023 External links: Talk details; Event details In : Beampipes for Gravitational Wave Telescopes 2023
Detailed record - Similar records
4.
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
Detailed record - Similar records
5.
Surface Polishing Facility for Superconducting RF Cavities at CERN / Ferreira, Leonel (CERN) ; Chritin, Nicolas (CERN) ; Ferreira, Rodrigo (CERN) ; Gerbet, Valentin (CERN)
A new SRF cavity polishing facility which covers the needs for present projects like the HL-LHC and its CRAB cavities as well as ongoing and future activities in the frame of the FCC study was commissioned at CERN in 2019. This facility can handle chemical and electrochemical polishing baths, can process both niobium and copper-based cavities on a wide range of geometries, starting at 400 MHz up to 1.3 GHz for elliptical type of cavities and more complex shapes as defined by the DQW and RFD CRAB design. [...]
2022 - 5 p. - Published in : JACoW SRF 2021 (2022) 387-391 Fulltext: PDF;
In : 20th International Conference on RF Superconductivity (SRF 2021), Online, US, 28 Jun - 2 Jul 2021, pp.387-391
Detailed record - Similar records
6.
RF Dipole Crab Cavity Testing for HL-LHC / Valverde Alonso, Nuria (CERN) ; Calaga, Rama (CERN) ; Calvo, Sebastien (CERN) ; Capatina, Ofelia (CERN) ; Castilla, Alejandro (CERN ; Lancaster U. (main)) ; Chiodini, Marco (CERN) ; Duval, Christophe (CERN) ; Ferreira, Leonel (CERN) ; Gourragne, Max (CERN) ; Kohler, Paul (CERN) et al.
RF Crab Cavities are an essential element of the High Luminosity LHC (HL-LHC) upgrade at CERN. Two RF dipole crab cavity used for the compensation of the horizontal crossing angle were recently manufactured and integrated into Titanium Helium tank and RF ancillaries necessary for the beam operation. [...]
2022 - 7 p. - Published in : JACoW SRF 2021 (2022) 687-693 Fulltext: PDF;
In : 20th International Conference on RF Superconductivity (SRF 2021), Online, US, 28 Jun - 2 Jul 2021, pp.687-693
Detailed record - Similar records
7.
Development of copper electroformed vacuum chambers with integrated non-evaporable getter thin film coatings / Amadora, Lucia Lain (CERN ; UTINAM, Besancon) ; Chiggiato, Paolo (CERN) ; Ferreira, Leonel M A (CERN) ; Nistor, Valentin (CERN) ; Fontenla, Ana T Perez (CERN) ; Taborelli, Mauro (CERN) ; Vollenberg, Wilhelmus (CERN) ; Doche, Marie-Laure (UTINAM, Besancon) ; Hihn, Jean-Yves (UTINAM, Besancon)
First results concerning a new approach of TiZrV non-evaporable getter (NEG) thin films coating on very small diameter vacuum chambers are presented. This new process is based on the electroforming of a vacuum chamber around a sacrificial mandrel, which is precoated with a NEG thin film. [...]
2017 - Published in : J. Vac. Sci. Technol. A 36 (2018) 021601
Detailed record - Similar records
8.
Upgrade of PIAVE Superconducting RFQs at INFN-Legnaro / Bisoffi, Giovanni (INFN, Legnaro) ; Andreev, Vladimir (Moscow, ITEP) ; Bissiato, Enzo (INFN, Legnaro) ; Bortolato, Damiano (INFN, Legnaro) ; Bosotti, Angelo (LASA, Segrate) ; Chiurlotto, Francesca (INFN, Legnaro) ; Contran, Tiziano (INFN, Legnaro) ; Fagotti, Enrico (INFN, Legnaro) ; Ferreira, Leonel (CERN) ; Kasprzak, Karol (Cracow, INP) et al.
Superconducting RFQs (SRFQs), the first SC RFQs ever made operational for users, have been operated on the PIAVE SC heavy ion linac injector at INFN-Legnaro since 2006. The structure is split into two resonators and is limited to the accelerating RFQ sections. [...]
2018 - 4 p. - Published in : (2018) , pp. THPAL007
- Published in : J. Phys.: Conf. Ser. 1067 (2018) 082008 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPAL007
Detailed record - Similar records
9.
Determining BCP Etch Rate and Uniformity in High Luminosity LHC Crab Cavities / Jones, Thomas (Daresbury ; Lancaster U. (main)) ; Burt, Graeme (Lancaster U. (main)) ; Calaga, Rama (CERN) ; Capatina, Ofelia (CERN) ; Ferreira, Leonel (CERN) ; Leuxe, Raphael (CERN) ; Mitchell, James (Lancaster U. (main)) ; Pattalwar, Shrikant (Daresbury) ; Verdú-Andrés, Silvia (Brookhaven Natl. Lab.) ; Xiao, Binping (Brookhaven Natl. Lab.)
The compact SRF Crab Cavities required for HL-LHC have complex geometries making prediction of average and local BCP etch rates a difficult task. This paper describes a series of experiments and simulations used to determine the etch uniformity and rate within these structures. [...]
2018 - 5 p. - Published in : 10.18429/JACoW-SRF2017-TUPB100 External link: Fulltext
In : 18th International Conference on RF Superconductivity, Lanzhou, China, 17 - 21 Jul 2017, pp.TUPB100
Detailed record - Similar records
10.
SUBU Characterisation: Bath Fluid Dynamics vs Etching Rate / Perez Rodriguez, Alejandra (CERN) ; Ferreira, Leonel (CERN) ; Sublet, Alban (CERN)
The chemical polishing bath SUBU is widely used at CERN to prepare copper RF cavities surfaces before niobium thin film coating; examples are HIE-ISOLDE, LHC and future FCC accelerating cavities. The performance of the polishing process is affected by bath temperature and fluid dynamics. [...]
2018 - 5 p. - Published in : 10.18429/JACoW-SRF2017-TUPB078 External link: Fulltext
In : 18th International Conference on RF Superconductivity, Lanzhou, China, 17 - 21 Jul 2017, pp.TUPB078
Detailed record - Similar records

CERN Document Server : 16 records found   1 - 10next  jump to record:
See also: similar author names
11 Ferreira, L
89 Ferreira, L A
2 Ferreira, L C
2 Ferreira, L C F
1 Ferreira, L D
3 Ferreira, L G
3 Ferreira, L M
7 Ferreira, L M A
3 Ferreira, L.
1 Ferreira, Leonel M A
3 Ferreira, Leticia
4 Ferreira, Leticia D
1 Ferreira, Leticia Dutra
4 Ferreira, Letícia D
15 Ferreira, Lidia S
1 Ferreira, Luellerson C
2 Ferreira, Luis
1 Ferreira, Luiz
1 Ferreira, Luiz A
1 Ferreira, Luiz F
15 Ferreira, Lídia S
Interested in being notified about new results for this query?
Set up a personal email alert or subscribe to the RSS feed.
Haven't found what you were looking for? Try your search on other servers:
Ferreira, Leonel in Amazon
Ferreira, Leonel in CERN EDMS
Ferreira, Leonel in CERN Intranet
Ferreira, Leonel in CiteSeer
Ferreira, Leonel in Google Books
Ferreira, Leonel in Google Scholar
Ferreira, Leonel in Google Web
Ferreira, Leonel in IEC		Ferreira, Leonel in IHS
Ferreira, Leonel in INSPIRE
Ferreira, Leonel in ISO
Ferreira, Leonel in KISS Books/Journals
Ferreira, Leonel in KISS Preprints
Ferreira, Leonel in NEBIS
Ferreira, Leonel in SLAC Library Catalog
Ferreira, Leonel in Scirus