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1.
Weld Qualification of the Cold Mass of the Superconducting Quadrupoles Magnets (MQXF) for the HL-LHC Project / Castro, Enrique Rodriguez (Carlos III U., Madrid) ; Aviles Santillana, Ignacio (CERN) ; Sgobba, Stefano (CERN) ; Izquierdo, Gonzalo Arnau (CERN) ; Bonnin, Simon (CERN) ; Bampton, Tavis (CERN) ; Prin, Herve (CERN) ; Todesco, Ezio (CERN) ; Navas, Elisa Maria Ruiz (Carlos III U., Madrid)
The High Luminosity Large Hadron Collider (HL-LHC) is a major upgrade to the existing Large Hadron Collider (LHC) at CERN, aimed at increasing the integrated luminosity of the collider by a factor of ten [1]. A key component of the HL-LHC are the superconducting Nb3Sn quadrupole magnets, known as MQXF, whose purpose is to focus the particle beam [3]. [...]
2024 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 9000904
2.
Challenges and Lessons Learned From Fabrication, Testing, and Analysis of Eight MQXFA Low Beta Quadrupole Magnets for HL-LHC / Ambrosio, Giorgio (Fermilab) ; Amm, Kathleen (Brookhaven) ; Anerella, Michael (Brookhaven) ; Apollinari, Giorgio (Fermilab) ; Izquierdo, Gonzalo Arnau (CERN) ; Baldini, Maria (Fermilab) ; Ballarino, Amalia (CERN) ; Barth, Christian (CERN) ; Yahia, Anis Ben (Brookhaven) ; Blowers, James (Fermilab) et al.
By the end of October 2022, the US HL-LHC Accelerator Upgrade Project (AUP) had completed fabrication of ten MQXFA magnets and tested eight of them. The MQXFA magnets are the low beta quadrupole magnets to be used in the Q1 and Q3 Inner Triplet elements of the High Luminosity LHC. [...]
arXiv:2301.09523; FERMILAB-PUB-22-855-TD.- 2023-08 - 8 p. - Published in : IEEE Trans. Appl. Supercond. 33 (2023) 4003508 Fulltext: 2301.09523 - PDF; 81b192c337ae5d5acaec37450e135529 - PDF; External link: Fermilab Library Server
3.
Microchannel Cooling for the LHCb VELO Upgrade I / Collins, Paula (CERN) ; De Aguiar Francisco, Oscar Augusto (University of Manchester (GB)) ; Byczynski, Wiktor (Tadeusz Kosciuszko Cracow University of technology (PL)) ; Akiba, Kazu (Nikhef National institute for subatomic physics (NL)) ; Bertella, Claudia (University of Manchester (GB)) ; Bitadze, Alexander (University of Manchester (GB)) ; Buytaert, Jan (CERN) ; De Capua, Stefano (University of Manchester (GB)) ; Callegari, Riccardo (CERN) ; Catinaccio, Andrea (CERN) et al.
The LHCb VELO Upgrade I, currently being installed for the 2022 start of LHC Run 3, uses silicon microchannel coolers with internally circulating bi-phase \cotwo for thermal control of hybrid pixel modules operating in vacuum. This is the largest scale application of this technology to date. [...]
arXiv:2112.12763; CERN-LHCb-PUB-2021-010; LHCb-PUB-2021-010; CERN-LHCb-PUB-2021-010.- Geneva : CERN, 2022-09-11 - 18 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1039 (2022) 166874 Fulltext: 2112.12763 - PDF; Publication - PDF; Publication: PDF;
4.
Brazing of Mo to Glidcop Dispersion Strengthened Copper for Accelerating Structures / Casalegno, Valentina (Polytech. Turin) ; Perero, Sergio (Polytech. Turin) ; Ferraris, Monica (Polytech. Turin) ; Taborelli, Mauro (CERN) ; Izquierdo, Gonzalo Arnau (CERN) ; Sgobba, Stefano (CERN) ; Salvo, Milena (Polytech. Turin)
Alumina dispersion-strengthened copper, Glidcop, is used widely in high-heat-load ultra-high-vacuum components for synchrotron light sources (absorbers), accelerator components (beam intercepting devices), and in nuclear power plants. Glidcop has similar thermal and electrical properties to oxygen free electrical (OFE) copper, but has superior mechanical properties, thus making it a feasible structural material; its yield and ultimate tensile strength are equivalent to those of mild-carbon steel. [...]
2018 - 13 p. - Published in : Materials 11 (2018) 1658 Fulltext: PDF;
5.
Hot isostatic pressing assisted diffusion bonding for application to the Super Proton Synchrotron internal beam dump at CERN / Pianese, Stefano (CERN) ; Perillo-Marcone, Antonio (CERN) ; Nuiry, François-Xavier (CERN) ; Calviani, Marco (CERN) ; Szczurek, Krzysztof Adam (CERN) ; Izquierdo, Gonzalo Arnau (CERN) ; Avigni, Pietro (CERN) ; Bonnin, Simon (CERN) ; Busom Descarrega, J. (CERN) ; Feniet, Thierry (CERN) et al.
The new generation internal beam dump of the Super Proton Synchrotron (SPS) at CERN will have to dissipate approximately 270 kW of thermal power, deposited by the primary proton beam. For this purpose, it is essential that the cooling system features a very efficient heat evacuation. [...]
arXiv:2011.07942.- 2021-04-15 - 10 p. - Published in : Phys. Rev. Accel. Beams 24 (2021) 043001 Fulltext: PDF; Fulltext from Publisher: PDF; Fulltext from publisher: PDF;
6.
Examination and Assessment of Large Forged Structural Components for the Precompression Structure of the ITER Central Solenoid / Sgobba, Stefano (CERN) ; Aviles Santillana, Ignacio (CERN) ; Izquierdo, Gonzalo Arnau (CERN) ; Libeyre, Paul (BIAM, St Paul lez Durance) ; Reagan, Travis (Oak Ridge, U.S. ITER) ; Hughes, Duke (Oak Ridge, U.S. ITER)
Large structural forgings of complex shape are required for several components of the precompression structure of the ITER Central Solenoid, consisting of a stack of six electrically independent modules and featuring a total height of 18 m and a diameter of over 4 m. The precompression structure allows the vertical tensile loads to be reacted and adequate preload to be maintained, in order to insure the contact between the modules during plasma operation. [...]
2020 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 30 (2020) 4202604
7.
Investigation of Materials and Welds for the Precompression Structure of the ITER Central Solenoid / Sgobba, Stefano (CERN) ; Santillana, Ignacio Aviles (Carlos III U., Madrid ; CERN) ; Langeslag, Stefanie Agnes Elisabeth (CERN) ; Pison, Pilar Fernandez (Carlos III U., Madrid ; CERN) ; Menendez, Paula Freijedo (CERN) ; Izquierdo, Gonzalo Arnau (CERN) ; Libeyre, Paul (Euratom, St. Paul Lez Durance) ; Hughes, Duke (ORNL, Oak Ridge (main))
The Central Solenoid (CS) is the backbone of the ITER magnet system. It consists of six independent coils held together by a vertical pre-compression structure that must react tensile loads and provide sufficient preload to maintain coil-to-coil contact during all stages of plasma operation. [...]
2018 - 1 p. - Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4202504
8.
Brazing of Mo to a CuZr alloy for the production of bimetallic raw materials for the CLIC accelerating structures / Salvo, M (Turin Polytechnic) ; Ferraris, Monica (Turin Polytechnic) ; Heikkinen, Samuli (CERN) ; Salvo, Milena (Turin Polytechnic) ; Casalegno, Valentina (Turin Polytechnic) ; Sgobba, Stefano (CERN) ; Rizzo, Stefano (Turin Polytechnic) ; Izquierdo, Gonzalo Arnau (CERN) ; Taborelli, Mauro (CERN)
Future linear accelerators, as CLIC (Compact Linear Collider), are extremely demanding in terms of material properties. Traditionally accelerating structure is made of brazed OFE copper parts. [...]
2010 - Published in : J. Mater. Process. Technol. 210 (2010) 791-798

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