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(100)

Towards Ultra-Thin Detector Magnet Designs by Insulating Coil Windings With V$_2$0$_3$-Epoxy Composite / Vaskuri, Anna (CERN) ; Curé, Benoit (CERN) ; Dudarev, Alexey (CERN) ; Mentink, Matthias (CERN) ; Pfeiffer, Stephan (CERN) ; Teissandier, Benoit (CERN)
We have measured temperature dependent resistivity of two types of vanadium oxide (V 2 O 3 ) epoxy composites from 77 K to room temperature. Such a composite could be used as an insulating layer between the windings of a superconducting magnet. [...]
2023 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 33 (2023) 1-4

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(91)

Demonstration of engineering current density exceeding 1 kA mm$^{−2}$ in ultra-thin no-insulation, soldered coil windings using NbTi/Cu wires with CuNi cladding / Bykovskiy, N (CERN) ; Kaal, S (CERN ; Twente U., Enschede) ; Dudarev, A (CERN) ; Mentink, M (CERN) ; ten Kate, H H J (CERN ; Twente U., Enschede)
The no-insulation, or more precisely, controlled-resistance coil winding method, nowadays being exclusively used for high-temperature superconducting solenoids, has proven its effectiveness for improving quench protection. When considering low-temperature superconductor magnet technology, which is mostly focused on stability and training issues, controlled-resistance insulation windings are directly addressing these aspects as well. [...]
2020 - 13 p. - Published in : Supercond. Sci. Technol. 33 (2020) 114001 Fulltext: PDF;

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(84)

Conceptual Design of a ReBCO Non/Metal-Insulated Ultra-High Field Solenoid for the Muon Collider / Bordini, B (CERN) ; Accettura, C (CERN) ; Bertarelli, A (CERN) ; Bottura, L (CERN) ; Dudarev, A (CERN) ; Kolehmainen, A (CERN) ; Mulder, T (CERN) ; Verweij, A (CERN) ; Wozniak, M (CERN)
The international particle physics community considers a Muon Collider (MC) as a possible option for the successor of the Large Hadron Collider (LHC) at CERN. An international collaboration has recently been set up to produce a conceptual design study of a Muon Collider. [...]
2024 - 10 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4301310

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(82)

Study of the Heater-Coil Electrical Insulation for the HL-LHC Low Beta Quadrupoles / Marinozzi, Vittorio (Fermilab) ; Ambrosio, Giorgio (Fermilab) ; Baldini, Maria (Fermilab) ; Izquierdo Bermudez, Susana (CERN) ; Ferracin, Paolo (LBL, Berkeley) ; Krave, Steven (Fermilab) ; Muratore, Joseph (BNL, NSLS) ; Nobrega, Alfred (Fermilab) ; Parker, Marcellus (Fermilab) ; Todesco, Ezio (CERN) et al.
In the framework of the HL-LHC project, the present LHC low-β superconducting quadrupoles will be substituted with higher performance Nb3Sn magnets (MQXF) with 11.4 T coil peak field. MQXF coils are impregnated with epoxy resin to reduce risk of stress concentration on the brittle conductor. [...]
2021 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 31 (2021) 4001705

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(80)

Systematic Study of the Contact Resistance Between REBCO Tapes: Pressure Dependence in the Case of No-Insulation, Metal Co-Winding and Metal-Insulation / Bonura, Marco (Geneva U.) ; Barth, Christian (Geneva U.) ; Joudrier, A (Geneva U.) ; Troitino, Jose Ferradas (CERN) ; Fête, Alexandre (Geneva U.) ; Senatore, Carmine (Geneva U.)
No-insulation and partial-insulation are novel approaches for compact, high field rare-earth-Ba2Cu3O7-x-coated conductor magnets. They maximize the current density and overcome some of the coated conductors’ intrinsic challenges such as the low normal zone propagation velocity and the resulting difficulties to quench REBCO magnets safely. [...]
2019 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 29 (2019) 6600305

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(75)

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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(70)

Quench Protection of Fusillo Subscale Curved CCT Magnet / Wozniak, M (CERN) ; Haziot, A (CERN) ; Mangiarotti, F J (CERN) ; Ravaioli, E (CERN) ; Ferriere, R (CERN) ; Guardia-Valenzuela, Jorge (CERN) ; Foussat, A P (CERN) ; Kirby, G (CERN) ; Verweij, A (CERN)
The Fusillo project at CERN aims to design and build a demonstrator magnet with multi-harmonic corrected fields in a 90° curved CCT magnet. In the first stage, a subscale magnet is built with 30° bending, about 1/30 of the demonstrator conductor length, and increased current to reach coil stresses equivalent to the demonstrator. [...]
2024 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4702805 Fulltext: PDF;

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(67)

Design and Modeling of AMaSED-2: A High Temperature Superconducting Demonstrator Coil for the Space Spectrometer ARCOS / Dam, Magnus (INFN, Milan) ; Burger, William Jerome (Enrico Fermi Ctr., Rome ; TIFPA-INFN, Trento) ; Carpentiero, Rita (ASI, Rome) ; Chesta, Enrico (CERN) ; Iuppa, Roberto (TIFPA-INFN, Trento) ; de Rijk, Gijs (CERN) ; Rossi, Lucio (INFN, Milan ; Milan U.)
Magnetic spectrometers detect the rigidity of charged particles by measuring the bending of their trajectories as they pass through a magnetic field. ARCOS is a proposal for a next generation magnetic spectrometer in space with a bending strength of 3 T $\,$ m at an operating temperature of 20 K. [...]
2022 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 32 (2022) 4500105
In : 15th European Conference on Applied Superconductivity (EUCAS 2021), Online, 5 - 9 Sep 2021, pp.4500105

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(67)

ICED—Inductively Coupled Energy Dissipater for Future High-Field Accelerator Magnets / Murtomäki, Jaakko Samuel (CERN) ; van Nugteren, Jeroen (CERN) ; Kirby, Glyn (CERN) ; de Rijk, Gijs (CERN) ; Rossi, Lucio (CERN) ; Stenvall, Antti (Tampere U. of Tech.)
Future high-field accelerator magnets, like the ones foreseen in the design study of the FCC project and for the EuCARD2 “Future Magnets” program, operate with magnetic fields in the range of 16-20 T. For such magnets the energy density is higher than in the accelerator magnets at present in operation, posing a challenge for the quench protection. [...]
2018 - 15 p. - Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4009015

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Quench Protection of Stacks of No-Insulation HTS Pancake Coils by Capacitor Discharge / Mulder, Tim (CERN) ; Wozniak, Mariusz (CERN) ; Verweij, Arjan (CERN)
No-Insulation (NI) technology for HTS coils has been around for a decade and is a proven method to protect small pancake coils in case of a quench. Without turn-to-turn insulation, excess current can bypass a sudden resistive part, thereby possibly preventing damaging the conductor locally. [...]
2024 - 6 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4703906

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