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Assembly and Test Results of the RMM1a,b Magnet, a CERN Technology Demonstrator Towards Nb3Sn Ultimate Performance
/ Gautheron, Emma (CERN) ; Bordini, Bernardo (CERN) ; Campagna, Guillaume (CERN) ; Felice, Hélène (CERN) ; Fleiter, Jerome (CERN) ; Guinchard, Michael (CERN) ; Izquierdo Bermudez, Susana (CERN) ; Mugnier, Sylvain (CERN) ; Perez, Juan Carlos (CERN) ; Petrone, Carlo (CERN) et al.
As part of the High Field Magnet technology development carried out at CERN, demonstrators are under construction to explore the full potential of Nb 3 Sn. The Racetrack Model Magnet (RMM) is one of them, building upon the successful Enhanced Racetrack Model Coil (eRMC) eRMC1a magnet which reached 16.5 T peak field or 16.3 T bore field at 1.9 K. [...]
2023 - 8 p.
- Published in : IEEE Trans. Appl. Supercond. 33 (2023) 1-8
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2.
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3.
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Performance of a MQXF Nb$_3$Sn Quadrupole Magnet Under Different Stress Level
/ Izquierdo Bermudez, Susana (CERN) ; Ambrosio, Giorgio (Fermilab) ; Bordini, Bernardo (CERN) ; Bourcey, Nicolas (CERN) ; Devred, Arnaud ; Ferracin, Paolo (LBNL, Berkeley) ; Ferradas Troitino, Jose (CERN) ; Ferradas Troitino, Salvador (CERN) ; Fiscarelli, Lucio (CERN) ; Fleiter, Jerome (CERN) et al.
In a dipole or in a quadrupole accelerator magnet, the displacement of the coil turns induced by the electromagnetic forces can cause quenches limiting the magnet performance. For this reason, an azimuthal preload is applied to avoid azimuthal movements of the coil up to the required operational current. [...]
arXiv:2204.11944; FERMILAB-PUB-22-223-TD.-
2022-05-10 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 32 (2022) 4007106
Fulltext: PDF; External link: Fermilab Accepted Manuscript
In : 27th International Conference on Magnet Technology (MT-27), Fukuoka, Japan, 15 - 19 Nov 2021, pp.4007106
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4.
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Progress in the Development of the Nb$_3$Sn MQXFB Quadrupole for the HiLumi Upgrade of the LHC
/ Izquierdo Bermudez, Susana (CERN) ; Ambrosio, Giorgio (Fermilab) ; Apollinari, Giorgio (Fermilab) ; Bajko, Marta (CERN) ; Bordini, Bernardo (CERN) ; Bourcey, Nicolas (CERN) ; Duarte Ramos, Delio (CERN) ; Ferracin, Paolo (LBL, Berkeley) ; Fiscarelli, Lucio (CERN) ; Feher, Sandor (Fermilab) et al.
The high-luminosity upgrade of the Large Hadron Collider (HL-LHC) requires new high field and large-aperture quadrupole magnets for the low-beta inner triplets (MQXF). With a nominal operating gradient of 132.2 T/m in a 150 mm aperture and a conductor peak field of 11.3 T, the new quadrupole magnets are based on Nb3Sn superconducting technology. [...]
FERMILAB-PUB-21-126-TD.-
2021 - 7 p.
- Published in : IEEE Trans. Appl. Supercond. 31 (2021) 4002007
Fulltext: PDF;
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5.
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Characterization of the Mechanical Properties of Nb$_3$Sn Coils
/ Fernández, José Luis Rudeiros (CERN) ; Perez, Juan Carlos (CERN) ; Ferradas Troitino, Salvador (CERN) ; Guinchard, Michael (CERN) ; Grosclaude, Philippe (CERN) ; Crouvizier, Mickael D (CERN) ; Langeslag, Stefanie (CERN) ; Izquierdo Bermudez, Susana (CERN) ; Savary, Frederic (CERN)
The 11 T magnet and other high-field magnets in the framework of the High-Luminosity Large Hadron Collider project are based on epoxy resin impregnated Nb3Sn coils. This paper presents the development of an experimental measurement setup, and associated methodology for the determination of the mechanical properties in compression of epoxy resin impregnated Nb3Sn coils. [...]
2019 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 29 (2019) 8401205
In : Applied Superconductivity Conference 2018, Seattle, United States Of America, 28 Oct - 2 Nov 2018, pp.8401205
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6.
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Mechanical Tests, Analysis, and Validation of the Support Structure of the eRMC and RMM Magnets of the FCC R&D at CERN
/ Pérez, Manuel García (CERN) ; Izquierdo Bermudez, Susana (CERN) ; Perez, Juan Carlos (CERN) ; Bourcey, Nicolas (CERN) ; Grosclaude, Philippe (CERN) ; Guinchard, Michael (CERN) ; Tommasini, Davide (CERN) ; Naini, Sohrab Emami (CERN) ; Ferradas Troitiño, Salvador (CERN)
The enhanced racetrack model coil and racetrack model magnet constitute the current R&D; Nb$_3$Sn magnets under development at CERN aiming to achieve dipole fields of 16-18 T, the design baseline of the Future Circular Collider (FCC). This article reports the mechanical behavior of their common support structure, which underwent three different levels of room-temperature preload (with the bladders and key method) and two cooldown cycles to 80 K. [...]
2020 - 7 p.
- Published in : IEEE Trans. Appl. Supercond. 30 (2020) 4004507
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7.
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The HL-LHC Short Model Recombination D2 Dipole: Cold Test Results and Analysis
/ Foussat, Arnaud (CERN) ; Fabbricatore, Pasquale (INFN, Genoa) ; Mangiarotti, Franco (CERN) ; Perez, Juan Carlos (CERN) ; Bersani, Andrea (INFN, Genoa) ; Caiffi, Barbara (INFN, Genoa) ; Farinon, Stefania (INFN, Genoa) ; Cereseto, Roberto (INFN, Genoa) ; Levi, Filippo (INFN, Genoa) ; Id'Bahmane, Oussama (CERN) et al.
The new D2 recombination superconducting dipole is a key two-in-one Nb-Ti magnet with a 105 mm bore aperture for the high luminosity LHC accelerator upgrade project (HL-LHC) at CERN expected in operation from 2024. A short model MBRDS1 magnet of 1.6 m magnetic length has been designed by INFN (Genova), built by ASG Superconductors, and cold tested at CERN within a INFN - CERN collaboration framework. [...]
2020 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 30 (2020) 4003405
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8.
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Preload Characterization of Short Models of MQXF the Nb$_3$Sn Low-$β$ Quadrupole for the Hi-Lumi LHC
/ Takala, Eelis (CERN) ; Ambrosio, Giorgio (Fermilab) ; Bourcey, Nicolas (CERN) ; Cheng, Daniel W (LBL, Berkeley) ; Ferracin, Paolo (CERN) ; Guinchard, Michael (CERN) ; Izquierdo Bermudez, Susana (CERN) ; Mangiarotti, Franco (CERN) ; Pan, Heng (LBL, Berkeley) ; Perez, Juan Carlos (CERN) et al.
MQXF is the Nb$_3$Sn Low-β Quadrupole magnet that the HL-LHC project is planning to install in the LHC interaction regions in 2026 as part of an upgrade to increase the LHC inte-grated luminosity by about a factor of ten. The magnet will be fab-ricated in two different lengths: 4.2 m for MQXFA, built in the US by the Accelerator Upgrade Project (AUP), and 7.15 m for MQXFB, fabricated by CERN. [...]
FERMILAB-PUB-20-119-TD.-
2020 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 30 (2020) 4002806
Fulltext: PDF; External link: Fermilab Accepted Manuscript
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9.
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3-D thermal-electric finite element model of a Nb$_3$Sn coil during a quench
/ Ferradas Troitino, Jose (U. Geneva (main) ; CERN) ; Ambrosio, Giorgio (Fermilab) ; Bajas, Hugo (CERN) ; Bordini, Bernardo (CERN) ; Ferracin, Paolo (CERN) ; Fleiter, Jerome (CERN) ; Izquierdo Bermudez, Susana (CERN) ; Gomez, Jose Vicente Lorenzo (Barcelona Supercomputing Ctr.) ; Perez, Juan Carlos (CERN) ; Vallone, Giorgio (LBNL, Berkeley) et al.
High field superconducting magnets for particle accelerators often exhibit premature quenches. Once a normal zone is generated within the conductor, the quench may propagate causing temperature and resistive voltage rise along the coil. [...]
FERMILAB-PUB-19-403-TD.-
2019 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 29 (2019) 4701306
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Power test of the second-generation Compact Linear Collider (CLIC) Nb$_3$Sn damping wiggler short model
/ Duda, Michal (Cracow, INP ; CERN) ; Mangiarotti, Franco (CERN) ; Bajko, Marta (CERN) ; Bernhard, Axel (KIT, Karlsruhe) ; Desbiolles, Vincent (CERN) ; Ferracin, Paolo (CERN) ; Feuvrier, Jerome (CERN) ; Garcia Fajardo, Laura (LBL, Berkeley) ; Lorenzo, Jose (CERN) ; Mazet, Jacky (CERN) et al.
In the frame of the compact linear collider project, a high-field short-period superconducting damping wigglers will be required to reduce the emittance of the electron and positron beams. The use of Nb$_3$Sn as superconducting material is being investigated, as a valid option for its smaller size and increased working margin. [...]
2019 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 29 (2019) 4100405
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