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Analysis of the Leakage Events in the Thermal Shield Cooling Pipes of the ITER Magnet System
/ Sgobba, Stefano (CERN) ; Santillana, Ignacio Aviles (CERN) ; Celuch, Michal (CERN) ; Crouvizier, Mickaël (CERN) ; Perez Fontenla, Ana Teresa (CERN) ; Castro, Enrique Rodriguez (CERN) ; Mitchell, Neil (Euratom, St. Paul Lez Durance) ; Koizumi, Norikiyo (Euratom, St. Paul Lez Durance) ; Pearce, Robert (Euratom, St. Paul Lez Durance) ; Worth, Liam (Euratom, St. Paul Lez Durance) et al.
The ITER Thermal Shields (TS) consist of actively cooled stainless steel panels. Their role is to minimise the radiation heat load from warm components, such as the Vacuum Vessel (VV) and the cryostat, hence contributing to insulating the magnet system operating at 4.5 K. [...]
2024 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4203405
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3.
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4.
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Failure analysis of a heavy gauge fastener of the ITER toroidal field gravity support system
/ Sgobba, Stefano (CERN) ; Santillana, Ignacio Aviles (CERN) ; Buchanan, Katie Elizabeth (CERN) ; Celuch, Michal Dalemir (CERN) ; Crouvizier, Mickaël (CERN) ; Fontenla, Ana Teresa Perez (CERN) ; Castro, Enrique Rodriguez (CERN ; Carlos III U., Madrid) ; Beemsterboer, Cornelis (Euratom, St. Paul Lez Durance) ; Liao, Min (Euratom, St. Paul Lez Durance) ; Schild, Thierry (Euratom, St. Paul Lez Durance) et al.
The Gravity Supports (GS) of the ITER Toroidal Field (TF) coils are positioned at the bottom of the machine and
are situated under the 18 toroidal field coils. Each support includes 26 high strength bolts with M60 and M85
gauge. [...]
2023 - 5 p.
- Published in : Fusion Eng. Des. 186 (2023) 113353
Fulltext: PDF;
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5.
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Metallurgical assessment of large size tensioning components for the precompression structure of the ITER central solenoid
/ Sgobba, Stefano (CERN) ; Lourenço, Sandra Sophie (CERN) ; Santillana, Ignacio Aviles (CERN) ; Libeyre, Paul (BIAM, St Paul lez Durance) ; Reagan, Travis (Oak Ridge, U.S. ITER) ; Wooten, Cain (Oak Ridge, U.S. ITER)
• An adapted fabrication and processing route including vacuum induction melting (VIM) and electroslag remelting (ESR) or vacuum arc remelting (VAR), combined with hot transformation steps involving where applicable redundant multidirectional forging, was successfully applied to the production of inconel 718 large size tensioning components for the precompression structure of the ITER central solenoid. • Material production involved a wide variety of gauges and product shapes, whose final properties are very consistent thanks to a repeatable and well mastered production process. [...]
2021
- Published in : Fusion Eng. Des. 170 (2021) 112543
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6.
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Design Optimization and Assessment of Fabrication of ITER Central Solenoid Twin Box Joints
/ Santillana, Ignacio Aviles (CERN) ; Guinchard, Michael (CERN) ; Lourenço, Sandra Sophie (CERN) ; Motschmann, Fritz (CERN) ; Sacristan de Frutos, Oscar (CERN) ; Sgobba, Stefano (CERN) ; Bruton, Andrew (BIAM, St Paul lez Durance) ; Gaxiola, Enrique (BIAM, St Paul lez Durance) ; Libeyre, Paul (BIAM, St Paul lez Durance) ; Schild, Thierry (BIAM, St Paul lez Durance) et al.
The ITER Central Solenoid (CS) will be one of the world's largest and most powerful pulsed superconducting electromagnet ever built; at an approximate weight of 1300 tons and a total height of 18 m consisting of a stack of six electrically independent 4.1 m diameter modules. In order to electrically connect the CS with the feeder busbars, 12 twin box joints are used to assure an efficient high current transfer while avoiding excessive AC losses. [...]
2020 - 4 p.
- Published in : IEEE Trans. Appl. Supercond. 30 (2020) 4202404
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7.
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The Effect of Specific Manufacturing Characteristics on PF ITER Full-Size Joint Performance
/ Pison, Pilar Fernandez (Carlos III U., Madrid) ; Langeslag, Stefanie A E (CERN) ; Santillana, Ignacio Aviles (CERN) ; Dimitrijevic, Alexander (CERN) ; Sgobba, Stefano (CERN) ; Ilyin, Yury (BIAM, St Paul lez Durance) ; Simon, Fabrice (BIAM, St Paul lez Durance) ; Lim, Byung Su (BIAM, St Paul lez Durance)
The development of new generation superconducting magnets for fusion research, such as the ITER experiment, is largely based on coils wound from so-called “Cable-In-Conduit” Conductors (CICCs). CICCs consist of various types of stainless steel jackets, densely filled with compacted superconducting strands, which are cooled by supercritical helium. [...]
2019 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 29 (2019) 4200706
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8.
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Assessment of the Mechanical Properties of Ultra-High Purity Niobium after Cold Work and Heat Treatment with the HL-LHC Crab Cavities as Benchmark
/ Gallifa Terricabras, Adria (CERN) ; Amorim Carvalho, Alexandre (CERN) ; Aviles Santillana, Ignacio (CERN) ; Barriere, Simon (CERN) ; Calaga, Rama (CERN) ; Cano Pleite, Eduardo (CERN) ; Capatina, Ofelia (CERN) ; Crouvizier, Mickael Denis (CERN) ; Dassa, Luca (CERN) ; Meyer, Mickael Sebastien (CERN) et al.
The High Luminosity Large Hadron Collider (HL-LHC) is the upgrade of the world’s largest particle collider; it will allow the full exploitation of the LHC potential and its operation beyond 2025. An essential part of the HL-LHC project are the Crab Cavities, that are particle de-flecting SRF cavities of non-axisymmetric shape made of bulk ultra-high purity Nb. [...]
CERN-ACC-2019-0050.-
Geneva : CERN, 2019 - 7 p.
- Published in : (2019) , pp. 862-867
Fulltext: 1018429JACoWSRF2019THP012 - PDF; CERN-ACC-2019-0050 - PDF;
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9.
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Secondary Phases Quantification and Fracture Toughness at Cryogenic Temperature of Austenitic Stainless Steel Welds for High-Field Superconducting Magnets
/ Santillana, Ignacio Aviles (CERN) ; Pison, Pilar Fernandez (CERN) ; Langeslag, Stefanie Agnes Elisabeth (CERN) ; Sgobba, Stefano (CERN) ; Lunt, Alexander (CERN) ; Boyer, Christelle (Euratom, St. Paul Lez Durance) ; Navas, Elisa Maria Ruiz (Carlos III U., Madrid)
The ITER magnet system is based on the “cable-in-conduit” conductor concept, which consists of various types of stainless steel jackets filled with superconducting strands. The jackets provide high strength and fracture toughness to counteract the high stress imposed by, amongst others, electromagnetic loads at cryogenic temperature. [...]
2018 - 4 p.
- Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4205804
In : 13th European Conference on Applied Superconductivity, ICCG, Geneva, Switzerland, 17 - 21 Sep 2017, pp.4205804
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10.
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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
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