Garcia-Tabares Valdivieso, Elisa - Search Results

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Resistivity Characterization of Molybdenum-Coated Graphite-Based Substrates for High-Luminosity LHC Collimators / Accettura, Carlotta (Politecnico di Milano (IT)) ; Amorim, David (Universite Grenoble-Alpes (FR)) ; Antipov, Sergey ; Baris, Adrienn (CERN) ; Bertarelli, Alessandro (CERN) ; Biancacci, Nicolo (CERN) ; Calatroni, Sergio (CERN) ; Carra, Federico (CERN) ; Caspers, Fritz (European Scientific Institute (FR)) ; Garcia-Tabares Valdivieso, Elisa (CERN) et al.
The High-Luminosity Large Hadron Collider (HL-LHC) project aims at extending the operability of the LHC by another decade and increasing by more than a factor of ten the integrated luminosity that the LHC will have collected by the end of Run 3. This will require doubling the beam intensity and reducing the transverse beam size compared to those of the LHC design. [...]
CERN-ACC-NOTE-2020-0025.- Geneva : CERN, 2020 - Published in : Coatings 10 (2020) 361 Fulltext: PDF;

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Optimization of the secondary electron yield of laser-structured copper surfaces at room and cryogenic temperature / Calatroni, Sergio (CERN) ; Garcia-Tabares Valdivieso, Elisa (CERN) ; Perez Fontenla, Ana Teresa (CERN) ; Taborelli, Mauro (CERN) ; Neupert, Holger (CERN) ; Himmerlich, Marcel (CERN) ; Chiggiato, Paolo (CERN) ; Bajek, David (Dundee U.) ; Wackerow, Stefan (Dundee U.) ; Abdolvand, Amin (Dundee U.)
Electron cloud (e-cloud) mitigation is an essential requirement for proton circular accelerators in order to guarantee beam stability at a high intensity and limit the heat load on cryogenic sections. Laser-engineered surface structuring is considered a credible process to reduce the secondary electron yield (SEY) of the surfaces facing the beam, thus suppressing the e-cloud phenomenon within the high luminosity upgrade of the LHC collider at CERN (HL-LHC). [...]
2020 - 10 p. - Published in : Phys. Rev. Accel. Beams 23 (2020) 033101 Fulltext: PDF;

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Dust analysis from LHC vacuum system to identify the source of macro particle-beam-interactions / Grob, Laura (CERN ; Darmstadt, Tech. U.) ; Apollonio, Andrea (CERN) ; Charvet, Colette (CERN) ; Garcia-Tabares Valdivieso, Elisa (CERN) ; Kos, Hendrik (CERN) ; Neves, Colino (Furtwangen U. ; CERN) ; Schmidt, Ruediger (CERN ; Darmstadt, Tech. U.) ; Perez Fontenla, A T (CERN) ; Descarraga Busom, J (CERN)
Since in 2010 the first sub-millisecond beam losses were observed at varying locations all along the LHC, it is well known that dust can interact with high-intensity proton beams and cause significant beam losses. Initially the sudden localized losses were enigmatic and coined the phrase “unidentified falling objects” (UFOs), which is still widely used. [...]
CERN-ACC-2019-178.- 2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-MOPTS094 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPTS094

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First Beam Test of Laser Engineered Surface Structures (LESS) at Cryogenic Temperature in CERN SPS Accelerator / Salemme, Roberto (CERN ; Euratom, St. Paul Lez Durance) ; Abdolvand, Amin (Dundee U.) ; Baglin, Vincent (CERN) ; Calatroni, Sergio (CERN) ; Chiggiato, Paolo (CERN) ; Di Girolamo, Beniamino (CERN) ; Garcia-Tabares Valdivieso, Elisa (CERN) ; Jenninger, Berthold (CERN) ; Prever-Loiri, Laurent (CERN) ; Sitko, Monika (CERN) et al.
Electron cloud mitigation is an essential requirement for accelerators of positive particles with high intensity beams to guarantee beam stability and limited heat load in cryogenic systems. Laser Engineered Surface Structures (LESS) are being considered, within the High Luminosity upgrade of the LHC collider at CERN (HL-LHC), as an option to reduce the Secondary Electron Yield (SEY) of the surfaces facing the beam, thus suppressing the electron cloud phenomenon. [...]
2018 - 4 p. - Published in : (2018) , pp. WEPMG005
- Published in : J. Phys.: Conf. Ser. 1067 (2018) 082017 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMG005

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Towards the Implementation of Laser Engineered Surface Structures for Electron Cloud Mitigation / Sitko, Monika (CERN) ; Abdolvand, Amin (Dundee U.) ; Baglin, Vincent (CERN) ; Bajek, David (Dundee U.) ; Calatroni, Sergio (CERN) ; Chiggiato, Paolo (CERN) ; Colling, Miriam (Daresbury) ; Di Girolamo, Beniamino (CERN) ; Garcia-Tabares Valdivieso, Elisa (CERN) ; Jones, Thomas (Daresbury) et al.
The LHC operation has proven that the electron cloud could be a significant limiting factor in machine performance, in particular for future High Luminosity LHC (HL-LHC) beams. Electron clouds, generated by electron multipacting in the beam pipes, leads to beam instabilities and beam-induced heat load in cryogenic systems. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-TUZGBE3 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.TUZGBE3

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First accelerator test of vacuum components with laser-engineered surfaces for electron-cloud mitigation / Calatroni, Sergio (CERN) ; Garcia-Tabares Valdivieso, Elisa (CERN) ; Neupert, Holger (CERN) ; Nistor, Valentin (CERN) ; Perez Fontenla, Ana Teresa (CERN) ; Taborelli, Mauro (CERN) ; Chiggiato, Paolo (CERN) ; Malyshev, Oleg (Daresbury) ; Valizadeh, Reza (Daresbury) ; Wackerow, Stefan (Dundee U.) et al.
Electron cloud mitigation is an essential requirement for high-intensity proton circular accelerators. Among other solutions, laser engineered surface structures (LESS) present the advantages of having potentially a very low secondary electron yield (SEY) and allowing simple scalability for mass production. [...]
2017 - 12 p. - Published in : Phys. Rev. Accel. Beams 20 (2017) 113201 Fulltext: PDF;

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Upgrading the SPS Fast Extraction Kicker Systems for HL-LHC / Barnes, Michael (CERN) ; Beck, Mario (CERN) ; Day, Hugo (CERN) ; Ducimetière, Laurent (CERN) ; Garcia-Tabares Valdivieso, Elisa (CERN) ; Goddard, Brennan (CERN) ; Neupert, Holger (CERN) ; Romano, Annalisa (CERN) ; Vega Cid, Lorena (CERN) ; Weterings, Wim (CERN) et al.
The CERN SPS has two fast extraction systems, each consisting of travelling wave kicker magnets (MKEs). The beam induced heating in the ferrite yoke of these magnets was historically kept to an acceptable level by implementing water cooling of the kicker magnets: in addition serigraphy was applied on the surfaces of the ferrite yoke facing the beam. [...]
CERN-ACC-2017-217.- 2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-WEPVA097 Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.WEPVA097

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