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Development and characterisation of advanced coatings for high energy physics applications
/ Perez Fontenla, Ana Teresa (CERN) ; Pereira Carlos, Carlota (CERN) ; Leith, Stewart (CERN) ; Moros, Alice (CERN) ; Pfeiffer, Stephan (CERN) ; Rodriguez-Castro, Enrique (CERN) ; Rosaz, Guillaume (CERN)
The Future Circular Collider (FCC) study develops the technologies for next generation high performance particle colliders and accelerating structures. It places high requirements on the performance of Superconducting Radio Frequency (SRF) cavities used to accelerate the particle beam. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) WEPA150
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.WEPA150
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2.
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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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Weld Qualification of the Cold Mass of the Superconducting Quadrupoles Magnets (MQXF) for the HL-LHC Project
/ Castro, Enrique Rodriguez (Carlos III U., Madrid) ; Aviles Santillana, Ignacio (CERN) ; Sgobba, Stefano (CERN) ; Izquierdo, Gonzalo Arnau (CERN) ; Bonnin, Simon (CERN) ; Bampton, Tavis (CERN) ; Prin, Herve (CERN) ; Todesco, Ezio (CERN) ; Navas, Elisa Maria Ruiz (Carlos III U., Madrid)
The High Luminosity Large Hadron Collider (HL-LHC) is a major upgrade to the existing Large Hadron Collider (LHC) at CERN, aimed at increasing the integrated luminosity of the collider by a factor of ten [1]. A key component of the HL-LHC are the superconducting Nb3Sn quadrupole magnets, known as MQXF, whose purpose is to focus the particle beam [3]. [...]
2024 - 4 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 9000904
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4.
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Advanced ultrasonic examination of heavy–gauge high strength studs for the ITER toroidal field gravity supports
/ Santillana, I Aviles (CERN) ; Izquierdo, G Arnau (CERN) ; Bonnin, S (Neuchatel U.) ; Celuch, M (CERN) ; Castro, E Rodriguez (CERN ; Carlos III U., Madrid) ; Sgobba, S (CERN) ; Beemsterboer, C (Euratom, St. Paul Lez Durance) ; Liao, M (Euratom, St. Paul Lez Durance) ; Schild, T (Euratom, St. Paul Lez Durance) ; Han, S (Euratom, St. Paul Lez Durance) et al.
The ITER Tokamak will include the largest superconducting magnet system ever built, with 50 GJ of stored energy. A series of structural elements guarantee its integrity under extreme load and temperature conditions. [...]
2023 - 4 p.
- Published in : Fusion Eng. Des. 194 (2023) 113900
Fulltext: PDF;
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5.
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Heat Treatment Optimization on Nb-Sn Strands Based on Electrical and Physical Properties
/ Demattè, F (PSI, Villigen) ; Bruzzone, P (PSI, Villigen) ; Sarasola, X (PSI, Villigen) ; Pfeiffer, S (CERN) ; Castro, E Rodriguez (CERN ; Carlos III U., Madrid) ; De Marzi, G (ENEA, Frascati) ; Muzzi, L (ENEA, Frascati)
The electrical and physical properties of Nb
$_{3}$
Sn strands are strongly dependent on the heat treatment during which tin diffuses into niobium by solid-state diffusion. During diffusion, Nb
$_{3}$
Sn grains grow at the Nb/bronze interface. [...]
2022 - 4 p.
- Published in : IEEE Trans. Appl. Supercond. 32 (2022) 6000904
In : 27th International Conference on Magnet Technology (MT-27), Fukuoka, Japan, 15 - 19 Nov 2021, pp.6000904
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6.
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7.
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8.
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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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9.
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Friction stir welding of AISI 316LN high strength austenitic stainless steel for cryogenic application
/ Aviles Santillana, I (CERN) ; Debeux, J (CERN) ; Meyer, M (CERN) ; Muddamallappa, M (Texas A-M) ; Polo Picazo, A (CERN) ; Robe, H (Unlisted, FR) ; Rodriguez Castro, E (CERN ; Madrid U.) ; Sgobba, S (CERN) ; Weiss, KP (KIT, Karlsruhe)
Friction stir welding (FSW) is a solid state joining process that uses the heat generated by the friction of a rotating tool and the base material to join materials together. Due to the fact that the material is never melted, and that extensive plastic deformation is introduced in the weld seam, a unique set of properties is achieved. [...]
2022 - 9 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1241 (2022) , no. 1, pp. 012003
Fulltext: PDF;
In : Cryogenic Engineering Conference and International Cryogenic Materials Conference, Online, 19 - 23 Jul 2021
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10.
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High-gradient behavior of a dipole-mode rf structure
/ Woolley, B (Lancaster U. ; CERN) ; Burt, G (Lancaster U.) ; Dexter, A C (Lancaster U.) ; Peacock, R (Lancaster U.) ; Millar, W L (Lancaster U.) ; Catalan Lasheras, N (CERN) ; Degiovanni, A (CERN) ; Grudiev, A (CERN) ; Mcmonagle, G (CERN) ; Syratchev, I (CERN) et al.
A normal-conducting, X-band traveling wave structure operating in the dipole mode has been systematically high-gradient tested to gain insight into the maximum possible gradients in these types of structure. Measured structure conditioning, breakdown behavior, and achieved surface fields are reported as well as a postmortem analysis of the breakdown position and a scanning electron microscope analysis of the high-field surfaces. [...]
2020 - 11 p.
- Published in : Phys. Rev. Accel. Beams 23 (2020) 122002
Fulltext: PDF;
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