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1.
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Assessment of Training Performance, Degradation and Robustness of Paraffin-Wax Impregnated Nb3Sn Demonstrator Under High Magnetic Field
/ Araujo, D M (PSI, Villigen) ; Auchmann, B (PSI, Villigen ; CERN) ; Brem, A (PSI, Villigen) ; Daly, M (PSI, Villigen) ; Hug, C (PSI, Villigen) ; Michlmayr, T (PSI, Villigen) ; Amm, K (Brookhaven Natl. Lab.) ; Anerella, M (Brookhaven Natl. Lab.) ; Yahia, A Ben (Brookhaven Natl. Lab.) ; Cozzolino, J (Brookhaven Natl. Lab.) et al.
In the context of high-energy physics, the use of Nb3Sn superconducting magnets as a cost-effective and reliable technology depends on improvements in the following areas: long development and manufacturing cycles, conductor degradation after thermal cycling, long training, as well as a demonstration in accelerator magnets with a beam aperture of the full potential of modern Nb3Sn conductors. In short, performance, robustness, and cost are the three issues to be addressed. [...]
2024 - 8 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 7000208
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2.
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Subscale Stress-Managed Common Coil Design
/ Araujo, D M (PSI, Villigen) ; Auchmann, B (PSI, Villigen ; CERN) ; Brem, A (PSI, Villigen) ; Daly, M (PSI, Villigen) ; Michlmayr, T (PSI, Villigen) ; Müller, C (PSI, Villigen) ; Garcia-Rodrigues, H (PSI, Villigen) ; Sotnikov, D (PSI, Villigen) ; Milanese, A (CERN)
In the context of the High-Field Magnet (HFM) Programme, hosted at CERN, and the Swiss Accelerator Research and Technology (CHART) Initiative, hosted at PSI, the Magnet Development (MagDev) project aims to contribute to the Future Circular Collider (FCC) studies through, among others: (i) research on enabling technologies and (ii) high-field Low Temperature superconducting (LTS) and High Temperature Superconducting (HTS) magnets. After a first experience with the CD1 magnet, a Canted-Cosine-Theta (CCT) Nb3Sn demonstrator, a roadmap has been established with milestones ranging from enabling technologies tested in powered samples and coils, to ultimate-field and hybrid LTS/HTS short magnets. [...]
2024 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4003905
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3.
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Test Results From CD1 Short CCT Nb-Sn Dipole Demonstrator and Considerations About CCT Technology for the FCC-Hh Main Dipole
/ Auchmann, B (PSI, Villigen ; CERN) ; Araujo, D M (PSI, Villigen) ; Brem, A (PSI, Villigen) ; Daly, M (PSI, Villigen) ; Felder, R (PSI, Villigen) ; Feuvrier, J (CERN) ; Hug, C (PSI, Villigen) ; Kirby, O (PSI, Villigen) ; Mangiarotti, F (CERN) ; Milanese, A (CERN) et al.
In this article, we attempt to summarize the 5-year long involvement of PSI through the CHART MagDev program with R&D; on the Canted Cosine Theta (CCT) technology as a candidate for an FCC-hh main dipole magnet. We present the test results of the Canted Dipole 1 (CD1) 1-m-long 10-T Nb$_{3}$Sn demonstrator magnet, as well as a subjective list of ‘pros and cons' of CCT for the FCC-hh that we compiled along the way. [...]
2024 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4000906
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4.
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Training Curves of Nb$_3$Sn Rutherford Cables With a Wide Range of Impregnation Materials Measured in the BOX Facility
/ Otten, S. (Twente U., Enschede) ; Kario, A. (Twente U., Enschede) ; Wessel, W.A. J. (Twente U., Enschede) ; Leferink, J. (Twente U., Enschede) ; ten Kate, H.H.J. (Twente U., Enschede) ; Daly, M. (PSI, Villigen) ; Hug, C. (PSI, Villigen) ; Sidorov, S. (PSI, Villigen) ; Brem, A. (PSI, Villigen) ; Auchmann, B. (PSI, Villigen ; CERN) et al.
Training of accelerator magnets is a costly and time consuming process. The number of training quenches must therefore be reduced to a minimum. [...]
arXiv:2211.10213.-
2023-08 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 33 (2023) 4003605
Fulltext: 2211.10213 - PDF; Publication - PDF;
In : Applied Superconductivity Conference, Honolulu, Hawaii, United States, 23 - 28 Oct 2022, pp.4003605
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5.
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Design, production, and testing of superconducting magnets for the Super-FRS
/ Müller, Hans (Darmstadt, GSI) ; Allain, Hervé (IRFU, Saclay) ; Borceto, Alice (ASG Supercond., Genova) ; Cho, Eun Jung (Darmstadt, GSI) ; Daly, Michael (IRFU, Saclay) ; Drago, Giovanni (ASG Supercond., Genova) ; Golluccio, Giancarlo (Darmstadt, GSI) ; Grafin, Pierre (IRFU, Saclay) ; Lucas, Julio (Elytt, Madrid) ; Madur, Arnaud (IRFU, Saclay) et al.
The Super FRS is a two-stage in flight separator to be built next to the site of GSI, Darmstadt, Germany as part of FAIR (Facility for Anti-proton and Ion Research). Its purpose is to create and separate rare isotope beams and to enable the mass measurement also for very short lived nuclei. [...]
CERN-ACC-2019-255.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-THPTS011
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.THPTS011
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6.
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Mechanical analysis of the collaring process of the 11 T dipole magnet
/ Ferracin, Paolo (CERN) ; Bottura, Luca (CERN) ; Bourcey, Nicolas (CERN) ; Daly, Michael (CERN) ; Devred, Arnaud (CERN) ; Izquierdo Bermudez, Susana (CERN) ; Ferradas Troitino, Jose (CERN) ; Ferradas Troitino, Salvador (CERN) ; Grosclaude, Philippe (CERN) ; Guinchard, Michael (CERN) et al.
As part of the Large Hadron Collider (LHC) accelerator upgrades foreseen by the high luminosity-LHC project, the CERN 11 T program is aimed at replacing standard LHC Nb-Ti main dipole magnets, operating with a bore field of 8.3 T, with pairs of shorter Nb$_3$Sn dipole magnets with a bore field of 11 T and the same total integrated field, thus providing space for additional collimators in the dispersion suppressor region. At the time of the submission of this paper, six single-aperture and two double-aperture short models have been fabricated and tested. [...]
2019 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 29 (2019) 4002705
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7.
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Influence of transverse stress exerted at room temperature on the superconducting properties of Nb$_3$Sn wires
/ Ebermann, P (CERN ; Vienna, Tech. U., Atominst.) ; Baumgartner, T (Vienna, Tech. U., Atominst.) ; Behnsen, J (U. Manchester (main)) ; Daly, M (CERN) ; Terricabras, A Gallifa (CERN) ; Koettig, T (CERN) ; Lackner, F (CERN) ; Scheuerlein, C (CERN) ; Eisterer, M (Vienna, Tech. U., Atominst.)
Results on the irreversible degradation of Rutherford cables caused by transverse stress applied at room temperature have been recently published in the frame of the Future Circular Collider study for the 16 T dipole development programme. In order to investigate the degradation process of Nb3Sn composite superconductors, experiments based on wires of the same type as used in the cable have been launched. [...]
2019 - 18 p.
- Published in : Supercond. Sci. Technol. 32 (2019) 095010
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8.
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Finite Element Analysis of the Mechanical Conditions of the Nb$_3$Sn Cable of the 11 T Dipole Magnet During Operation
/ Löffler, Christian (CERN) ; Daly, Michael (CERN) ; Nilsson, Emelie (CERN) ; Savary, Frederic (CERN)
The development of the 11 T Dipole for the Dispersion Suppressor Collimators (DS11T) for the HiLumi LHC Project at CERN is nearly completed for the RRP conductor route. The DS11T magnet has a cosine theta 60-mm bore design with a removable pole, 56 turns, five wedges, and six coil blocks per quadrant. [...]
2018 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4008105
In : 13th European Conference on Applied Superconductivity, ICCG, Geneva, Switzerland, 17 - 21 Sep 2017, pp.4008105
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9.
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Multiscale approach to the mechanical behavior of epoxy impregnated Nb$_{3}$Sn coils for the 11 T dipole
/ Daly, Michael (CERN) ; Loffler, Christian H (CERN) ; Smekens, David (CERN) ; Fontenla, A T (CERN) ; Sacristan De Frutos, Oscar (CERN) ; Guinchard, Michael (CERN) ; Savary, Frederic (CERN)
The superconducting 11 T dipole magnets developed at CERN for the HL-LHC project are equipped with coils manufactured from Nb$_{3}$Sn Rutherford cables and following the wind and react fabrication technique. The brittleness of the multifilamentary structure of the Nb$_{3}$Sn within the cable strands exposes the coils to permanent performance degradation when subjected to excessive strain during assembly and operation. [...]
2018 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4007706
In : 25th International Conference on Magnet Technology, Amsterdam, The Netherlands, 27 Aug - 1 Sep 2017, pp.4007706
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10.
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Characterisation of the Mechanical Behaviour of Superconducting Cables Used in High Field Magnets From Room Temperature Down to 77K
/ Sacristan De Frutos, Oscar (CERN) ; Daly, Michael (CERN) ; Ferracin, Paolo (CERN) ; Fichera, Claudio (CERN) ; Guinchard, Michael (CERN) ; Mikkola, Tommi (CERN) ; Savary, Frederic (CERN) ; Vallone, Giorgio (CERN)
A comprehensive knowledge of the mechanical properties of the superconducting cable used in high-field magnets is of paramount importance to study and model the behaviour of the magnet coil from assembly to the operational conditions at cryogenic temperature. The mechanical characterisation of such kind of materials presents practical challenges associated with the heterogeneity of the materials, the geometry, size and quality of the samples that can be produced out of actual cables. [...]
CERN-ACC-2017-242.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-WEPVA112
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.WEPVA112
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