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Influence of the Heat Treatment on the Layer JC of Internal-Sn Nb3Sn Wires With Internally Oxidized Nanoparticles
/ Lonardo, F (Geneva U.) ; Bovone, G (Geneva U.) ; Buta, F (Geneva U.) ; Bonura, M (Geneva U.) ; Bagni, T (Geneva U. ; Uppsala U.) ; Medina-Clavijo, B (CERN) ; Ballarino, A (CERN) ; Hopkins, S C (CERN) ; Boutboul, T (CERN) ; Senatore, C (Geneva U.)
We evaluated various heat treatments (HT) for maximizing the Nb3Sn layer thickness while retaining a refined grain microstructure in low filament count internal-Sn Nb3Sn Rod-In-Tube wires with internally oxidized nanoparticles. These wires were manufactured in our laboratory using SnO2as oxygen source and Nb alloys containing Ta and Zr or Hf. [...]
2024 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 6000305
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Modeling Results of the Quench Behavior of a Nb-Ti Canted-Cosine-Theta Corrector Magnet for LHC
/ Bagni, T (Uppsala U.) ; Ahl, A (Scanditronix Instrument, Uppsala) ; Almström, M (Linnaeus U.) ; Canale, M (CERN) ; Dugic, I (Linnaeus U.) ; Emilsson, F (AMACC, Uppsala) ; Gentini, L (CERN) ; Haralanova, V (Linnaeus U.) ; Johansson, M (Unlisted, SE) ; Karlsson, G (Linnaeus U.) et al.
A newly designed superconducting magnet of the Canted-Cosine-Theta (CCT) type was developed as a result of a collaboration between Swedish universities (Uppsala and Linneaus) and Swedish industries. This magnet was designed to function as a replacement of the present LHC orbit corrector magnets, which are approaching their end of life due to the radiation load. [...]
2024 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4001105
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Test Results of the First Wax-Impregnated Nb-Ti Canted Cosine Theta Septum Magnet “SuShi”
/ Barna, D (Wigner RCP, Budapest) ; Brunner, K (Wigner RCP, Budapest) ; Borburgh, J (CERN) ; Atanasov, M (CERN) ; Lackner, F (CERN) ; Olvegård, M (Uppsala U.) ; Pepitone, K (Uppsala U.) ; Kern, Rocio Santiago (Uppsala U.) ; Svanberg, C (Uppsala U.) ; Bagni, T (Uppsala U.)
In the framework of the future circular collider study, a new septum magnet concept (“SuShi”) has been developed, and a prototype was built at Wigner RCP, and tested at the FREIA facility of Uppsala University. The concept uses a canted cosine theta (CCT)-like superconducting magnet and a passive superconducting shield to create a zero-field and high-field region within its aperture. [...]
2024 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4003105
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Training-free performance of the wax-impregnated SuShi septum magnet
/ Barna, D (Wigner RCP, Budapest) ; Brunner, K (Wigner RCP, Budapest) ; Novák, M (Wigner RCP, Budapest) ; Borburgh, J (CERN) ; Atanasov, M (CERN) ; Lackner, F (CERN) ; Olvegård, M (Uppsala U.) ; Pepitone, K (Uppsala U.) ; Santiago Kern, R (Uppsala U.) ; Svanberg, C (Uppsala U.) et al.
In the framework of the Future Circular Collider Study a new septum magnet concept, nicknamed ‘SuShi’ has been developed, and a prototype was built at Wigner Research Center for Physics, and tested at the FREIA facility of Uppsala University in April 2023. The concept uses a canted cosine theta (CCT)-like superconducting magnet and a passive superconducting shield to create a zero-field and high-field region within its aperture. [...]
2024 - 12 p.
- Published in : Supercond. Sci. Technol. 37 (2024) 045006
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Effects of the oxygen source configuration on the superconducting properties of internally-oxidized internal-Sn Nb$_{3}$Sn wires
/ Bovone, G (Geneva U.) ; Buta, F (Geneva U.) ; Lonardo, F (Geneva U.) ; Bagni, T (Geneva U.) ; Bonura, M (Geneva U.) ; LeBoeuf, D (LNCMI, Grenoble) ; Hopkins, S C (CERN) ; Boutboul, T (CERN) ; Ballarino, A (CERN) ; Senatore, C (Geneva U.)
We successfully manufactured 12-filament rod-in-tube Nb$_{3}$Sn wires with oxide nanoparticles formed by the internal oxidation method. We employed Nb-7.5 wt%Ta-1 wt%Zr and Nb-7.5 wt%Ta-2 wt% Hf alloys along with oxygen sources (OSs) in two different configurations—in the core of Nb filaments (coreOS) and at the boundary between the filaments and the Cu tube (annularOS)—to assess the influence of the OS layout on the superconducting properties and grain size. [...]
2023 - 11 p.
- Published in : Supercond. Sci. Technol. 36 (2023) 095018
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Effects of the initial axial strain state on the response to transverse stress of high-performance RRP Nb$_3$Sn wires
/ Troitino, J Ferradas (CERN ; Geneva U.) ; Bagni, T (Geneva U.) ; Barth, C (CERN) ; Bordini, B (CERN) ; Ferracin, P (LBL, Berkeley) ; Gamperle, L (Geneva U.) ; Tommasini, D (CERN) ; Zurmuehle, D (Geneva U.) ; Senatore, C (Geneva U.)
High-performance Nb$_3$Sn superconducting wires have become one of the key technologies for the development of next generation accelerator magnets. While their large critical current densities enable the design of compact accelerator-quality magnets for their operation above 10 T, the noticeable reduction of the conductor performance due to mechanical strain appears as a new essential characteristic in magnet design. [...]
2021 - 10 p.
- Published in : Supercond. Sci. Technol. 34 (2021) 035008
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AC loss and contact resistance of different CICC cable patterns: Experiments and numerical modeling
/ Anvar, V A (Twente U., Enschede ; Wollongong U.) ; Qin, J (Hefei, Inst. Plasma Phys.) ; Wu, Y (Hefei, Inst. Plasma Phys.) ; Bagni, T (Twente U., Enschede) ; Devred, A (CERN) ; Haugan, T J (Aero. Syst. Div., Wright-Patt. AFB) ; Hossain, M S A (Wollongong U. ; Queensland U.) ; Zhou, C (Twente U., Enschede ; Hefei, Inst. Plasma Phys.) ; Nijhuis, A (Twente U., Enschede)
For upcoming nuclear fusion energy reactors, like the China Fusion Engineering Test Reactor (CFETR) and EU-DEMO, the superconducting Cable-In-Conduit Conductors (CICC) are in the design phase, and the operatingconditions like electromagnetic forces can be higher than in previous devices like ITER. The prototype con-ductors for the Central Solenoid (CS) coils in the CFETR, for example, are designed to produce a peakfield of19.9 T and are expected to be made of high current density Nb3Sn strands. [...]
2020 - 11 p.
- Published in : Fusion Eng. Des. 161 (2020) 111898
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