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First operational experience of the upgraded cryogenic infrastructure of the vertical magnet test facility in the SM18 hall, including HFM and cluster D test stations.
/ Benda, V (CERN) ; Lees, A (CERN) ; Pirotte, O (CERN) ; Craen, A Vande (CERN) ; Pezzetti, M (CERN) ; Lamboy, J P (CERN) ; Lefebvre, V (CERN) ; Bajko, M (CERN) ; Giloux, C (CERN)
As part of the R&D; program for HL-LHC, the future upgrade of the Large Hadron Collider (LHC), the vertical magnet test facility in the SM18 cryogenic test hall at CERN has seen significant development. Since the installation of HFM and Cluster D cryogenic test stations in 2017, the facility is comprised of five vertical test cryostats of various sizes operating at either 1.9 K or 4.2 K. [...]
IOP, 2019 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng. 502 (2019) 012126
Fulltext: PDF;
In : 27th International Cryogenic Engineering Conference - International Cryogenic Materials Conference 2018, Oxford, United Kingdom, 3 - 7 Sep 2018, pp.012126
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2.
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Thermal performance of the new superfluid helium vertical test cryostats for magnet tests at CERN
/ Vande Craen, Arnaud (CERN) ; Bajko, M (CERN) ; Benda, V (CERN) ; Deschamps, J-B (CERN) ; Giloux, C (CERN) ; Lees, A (CERN) ; Parma, V (CERN) ; Pasdeloup, F (CERN) ; Pirotte, O (CERN)
In the frame of the R&D; program of the HL-LHC, the upgrade of the Large Hadron Collider (LHC), CERN augmented its test facility with two new large-scale vertical test stations for superconducting magnet testing. The cryostats composing the core of these test stations share design features but are of different dimensions: one allows testing magnets up to 1.5 m diameter, 2.5 m long for a maximum weight of 15 t, while the other can accommodate magnets up to 0.9 m diameter, and 5.5 m long for a maximum weight of 18 t. [...]
IOP, 2019 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng. 502 (2019) 012081
Fulltext: PDF;
In : 27th International Cryogenic Engineering Conference - International Cryogenic Materials Conference 2018, Oxford, United Kingdom, 3 - 7 Sep 2018, pp.012081
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3.
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Cryogenic test facility instrumentation with fiber optic and fiber optic sensors for testing superconducting accelerator magnets
/ Chiuchiolo, A (CERN) ; Bajas, H (CERN) ; Bajko, M (CERN) ; Castaldo, B (CERN ; U. Naples (main)) ; Consales, M (Sannio U.) ; Cusano, A (Sannio U.) ; Giordano, M (IPCB CNR, Portici) ; Giloux, C (CERN) ; Perez, J C (CERN) ; Sansone, L (IPCB CNR, Portici) et al.
The magnets for the next steps in accelerator physics, such as the High Luminosity upgrade of the LHC (HL- LHC) and the Future Circular Collider (FCC), require the development of new technologies for manufacturing and monitoring. To meet the HL-LHC new requirements, a large upgrade of the CERN SM18 cryogenic test facilities is ongoing with the implementation of new cryostats and cryogenic instrumentation. [...]
2017 - 8 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng. 278 (2017) 012082
Fulltext: PDF;
In : 2017 Cryogenic Engineering Conference and International Cryogenic Materials Conference, Madison, WI, USA, 9 - 13 Jul 2017, pp.012082
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4.
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Test Results of LARP ${\rm Nb}_{3}{\rm Sn}$ Quadrupole Magnets Using a Shell-Based Support Structure (TQS)
/ Caspi, S (LBNL, Berkeley) ; Dietderich, D R (LBNL, Berkeley) ; Felice, H (LBNL, Berkeley) ; Ferracin, P (LBNL, Berkeley) ; Hafalia, R (LBNL, Berkeley) ; Hannaford, C R (LBNL, Berkeley) ; Lietzke, A F (LBNL, Berkeley) ; Lizarazo, J (LBNL, Berkeley) ; Sabbi, G -L (LBNL, Berkeley) ; Wang, X R (LBNL, Berkeley) et al.
Amongst the magnet development program of a large-aperture Nb$_{3}$Sn superconducting quadrupole for the Large Hadron Collider luminosity upgrade, six quadrupole magnets were built and tested using a shell based key and bladder technology (TQS). The 1 m long 90 mm aperture magnets are part of the US LHC Accelerator Research Program (LARP) aimed at demonstrating Nb$_{3}$Sn technology by the year 2009, of a 3.6 m long magnet capable of achieving 200 T/m. [...]
2009 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 19 (2009) 1221-1225
In : Applied Superconductivity Conference 2008, Chicago, IL, USA, 17 - 22 Aug 2008, pp.1221-1225
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5.
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Upgrade of the CERN Superconducting Magnet Test Facility
/ Bajko, Marta (CERN) ; Benda, Vladislav (CERN) ; Bottura, Luca (CERN) ; Broche, Alexandre Joel (CERN) ; Formenti, Fabio (CERN) ; Giannelli, Sebastiano (CERN) ; Giloux, Christian (CERN) ; Kosmicki, Antoine (CERN) ; Goncalves Perez, Consuelo (CERN) ; Perez-Duenas, E (CERN) et al.
Abstract:
The superconducting magnet test facility at CERN has hosted the series test of the majority of the LHC magnets. The facility has evolved, and is presently divided in two main areas: a vertical test facility, equipped with three vertical cryostats, and a horizontal test facility, with ten feedboxes for test of cryostated magnets in horizontal position. [...]
2017 - 7 p.
- Published in : IEEE Trans. Appl. Supercond. 27 (2017) 9500307
In : Applied Superconductivity Conference, Denver, CO, USA, 4 - 9 Sep 2016, pp.9500307
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6.
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Performance of the cold powered diodes and diode leads in the main magnets of the LHC
/ Willering, G P (CERN) ; Giloux, C (CERN) ; Bajko, M (CERN) ; Bednarek, M (CERN) ; Bottura, L (CERN) ; Charifoulline, Z (CERN) ; Dahlerup-Petersen, K (CERN) ; Dib, G (CERN) ; D'Angelo, G (CERN) ; Gharib, A (CERN) et al.
During quench tests in 2011 variations in resistance of an order of magnitude were found in the diode by-pass circuit of the main LHC magnets. An investigation campaign was started to understand the source, the occurrence and the impact of the high resistances. [...]
2015
- Published in : IOP Conf. Ser. Mater. Sci. Eng. 101 (2015) 012076
IOP Open Access article: PDF;
In : Advances in Cryogenic Engineering: Cryogenic Engineering Conference, Tucson, AZ, USA, 28 Jun - 2 Jul 2015, pp.012076
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7.
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Test Set-Up for the Cooling of Heavy Magnets by Controlled Way Down to 77 K
/ Bajas, H (CERN) ; Bajko, M (CERN) ; Benda, V (CERN) ; Bottura, L (CERN) ; Bourgeois, G (CERN) ; Charrondiere, M (CERN) ; Chiuchiolo, A (CERN) ; Ferracin, P (CERN) ; Guinchard, M (CERN) ; Garcia, J E Muñoz (CERN) et al.
In the scope of the High Field Magnets work package of the European FP7-EuCARD project, the structure of the future dipole magnet RMC and FRESCA2 has been tested at liquid nitrogen temperature replacing the actual Nb$_{3}$Sn-based coils by aluminium dummy coils. Such test aims at measuring during the cooling the evolution of the mechanical stresses and the temperatures via compensated strain gauges and carbon-ceramic sensors placed at various locations on the structure (shell, rods, yokes, dummy coils). [...]
2015 - 7 p.
- Published in : Phys. Procedia 67 (2015) 331-337
Elsevier Open Access article: PDF;
In : 25th International Cryogenic Conference & International Cryogenic Materials Conference 2014, Twente U., Enschede, The Netherlands, 07 - 11 Jul 2014, pp.331-337
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8.
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Contact Resistances in the Cold Bypass Diode Leads of the Main LHC Magnets
/ Roger, V (CERN) ; Bajko, M (CERN) ; Petersen, K (CERN) ; D'Angelo, G (CERN) ; Dib, G (CERN) ; Giloux, C (CERN) ; Grand-Clement, L (CERN) ; Izquierdo Bermudez, S (CERN) ; Prin, H (CERN) ; Savary, F (CERN) et al.
The main superconducting dipole and (de)focusing quadrupole magnets of the LHC are equipped with cold bypass diodes to assure the passage of the current outside the magnets in case of a magnet quench. Each magnet has a parallel bus bar circuit with a diode that is connected via resistive bolted connections. [...]
2014 - 4 p.
- Published in : IEEE Trans. Appl. Supercond. 24 (2014) 4802504
In : 23rd International Conference on Magnet Technology, Boston, MA, USA, 14 - 19 Jul 2013, pp.4802504
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9.
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Test Results of the LARP HQ02b Magnet at 1.9 K
/ Bajas, H (CERN) ; Bajko, M (CERN) ; Bottura, L (CERN) ; Chiuchiolo, A (CERN) ; Dunkel, O (CERN) ; Ferracin, P (CERN) ; Feuvrier, J (CERN) ; Giloux, Chr (CERN) ; Todesco, E (CERN) ; Ravaioli, E (Twente U., Enschede ; CERN) et al.
The HQ magnet is a 120 mm aperture, 1-meter-long Nb$_{3}$Sn quadrupole developed by the LARP collaboration in the framework of the High-Luminosity LHC project. A first series of coils was assembled and tested in 5 assemblies of the HQ01 series. [...]
CERN-ACC-2015-0054.-
Geneva : CERN, 2015 - 7 p.
- Published in : IEEE Trans. Appl. Supercond. 25 (2015) 4003306
Fulltext: PDF;
In : Applied Superconductivity Conference 2014, Charlotte, NC, USA, 10 - 15 Aug 2014, pp.4003306
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10.
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New, Coupling Loss Induced, Quench Protection System for Superconducting Accelerator Magnets
/ Ravaioli, E (CERN ; Twente U., Enschede) ; Datskov, V I (CERN) ; Giloux, C (CERN) ; Kirby, G (CERN) ; ten Kate, H H J (CERN ; Twente U., Enschede) ; Verweij, A P (CERN)
Email Print Request Permissions Save to Project A new and promising method for the protection of superconducting high-field magnets is developed and tested on the so-called MQXC quadrupole magnet at the CERN magnet test facility. The method relies on a capacitive discharge system inducing, during a few periods, an oscillation of the transport current in the superconducting cable of the coil. [...]
2014
- Published in : IEEE Trans. Appl. Supercond. 24 (2014) 500905
In : 23rd International Conference on Magnet Technology, Boston, MA, USA, 14 - 19 Jul 2013, pp.500905
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