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Design and Manufacturing of the First Industrial-Grade CLIQ Units for the Protection of Superconducting Magnets for the High-Luminosity LHC Project at CERN
/ Rodriguez-Mateos, Felix (CERN) ; Carrillo, David (CERN) ; Balampekou, Stavroula (CERN) ; Dahlerup-Petersen, Knud (CERN) ; Favre, Mathieu (CERN) ; Mourao, Joaquim (CERN) ; Panev, Bozhidar (CERN)
The newly developed concept of Coupling-Loss Induced Quench (CLIQ) used in the domain of superconducting magnets quench protection has opened a new path towards efficient magnet protection. Subsequently to the first trials using ad hoc solutions in order to confirm functionality and performance of the method, two pre-series of three units each with different hardware configurations have been recently manufactured at CERN. [...]
2018 - 4 p.
- Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4702504
In : 25th International Conference on Magnet Technology, Amsterdam, The Netherlands, 27 Aug - 1 Sep 2017, pp.4702504
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A New Cryogenic Test Facility for Large and Heavy Superconducting Magnets
/ Serio, Luigi (CERN) ; Schnizer, Pierre (Darmstadt, GSI) ; Arnaud, Michel (CERN) ; Bertone, Caterina (CERN) ; Blanco, Enrique (CERN) ; Calcoen, Daniel (CERN) ; Charrondiere, Maryline (CERN) ; Cho, Eun Jung (Darmstadt, GSI) ; Coelingh, Gert-Jan (CERN) ; Dahlerup-Petersen, Knud (CERN) et al.
CERN has recently designed and constructed a new cryogenic facility for testing large and heavy superconducting magnets at liquid helium temperatures. The facility, erected in a large assembly hall with cranes capable of up to 100 t, provides a cooling capacity of 1.2 kW at 4.5 K equivalent, 15-kW LN$_2$ cooling and warming capabilities for up to three magnets in parallel. [...]
2016 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 27 (2017) 9500105
In : Applied Superconductivity Conference, Denver, CO, USA, 4 - 9 Sep 2016, pp.9500105
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Test results of a 7.5 kA semi-conductor prototype switch as modular switchgear in energy extraction systems for the HL-LHC magnet test facility
/ Coelingh, G J (CERN) ; Austnes, P F (CERN) ; Bednarek, M (CERN) ; Dahlerup-Petersen, K (CERN) ; Dinius, A (CERN) ; Erokhin, A (CERN) ; Favre, M (CERN) ; Karaventzas, V D (CERN) ; Michniuk, S (CERN) ; Panev, B (CERN) et al.
The superconducting magnets, intended for use in the LHC High Luminosity (HL-LHC) project at CERN are based on Nb$_3$Sn technology. Powering of prototypes of such magnets with up to tens of kilo-Amperes is required for detailed studies of the quench behavior as well as an evaluation of the associated magnet protection equipment. [...]
2016 - 6 p.
- Published in : 10.1109/IPMHVC.2016.8012877
In : 2016 IEEE International Power Modulator and High Voltage Conference, San Francisco, CA, USA, 5 - 9 Jul 2016, pp.514-519
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A high-current, IGBT-based static switch for energy extraction in superconducting power circuits: Concept, design and production of a 30 kA monopolar and a 1 kA bipolar fast opening switches
/ Dahlerup-Petersen, K (CERN) ; Bednarek, M (CERN) ; Coelingh, G J (CERN) ; Dinius, A (CERN) ; Erokhin, A (CERN) ; Favre, M (CERN) ; Siemko, A (CERN)
The steadily increasing demand from the particle physics community for higher beam energies and higher integrated beam luminosity has reinforced the necessity for new accelerator equipment, frequently breaking with conventional technologies. One of the fields where new and innovative engineering is required and where interesting developments are ongoing, is the domain of fast switching of high DC currents, such as it is required for rapid and safe extraction of large quantities of energy stored in superconducting magnet circuits. [...]
2017 - 6 p.
- Published in : 10.1109/IPMHVC.2016.8012875
In : 2016 IEEE International Power Modulator and High Voltage Conference, San Francisco, CA, USA, 5 - 9 Jul 2016, pp.508-513
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Advanced Quench Protection for the Nb$_3$Sn Quadrupoles for the High Luminosity LHC
/ Ravaioli, E (CERN ; Twente U., Enschede) ; Auchmann, B (CERN) ; Datskov, V I ; Blomberg Ghini, J (CERN ; Norwegian U. Sci. Tech.) ; Dahlerup-Petersen, K (CERN) ; Fernandez Navarro, A M (CERN) ; Kirby, G (CERN) ; Maciejewski, M (CERN ; Lodz, Tech. U.) ; Rodriguez Mateos, F (CERN) ; ten Kate, H H J (CERN ; Twente U., Enschede) et al.
The goal of the High Luminosity LHC project is upgrading the LHC in order to increase its luminosity by a factor of five. To achieve this, 24 150-mm-aperture 12-T Nb_3Sn quadrupole magnets are to be installed close to the two interaction regions at ATLAS and CMS. [...]
2016 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 26 (2016) 4002006
In : 12th European Conference on Applied Superconductivity, Lyon, France, 06 - 10 Sep 2015, pp.4002006
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Consolidation of the LHC Superconducting Magnets and Circuits
/ Tock, J Ph (CERN) ; Atieh, S (CERN) ; Bodart, D (CERN) ; Bordry, F (CERN) ; Bourcey, N (CERN) ; Charifoulline, Z (CERN) ; Cruikshank, P (CERN) ; Dahlerup-Petersen, K (CERN) ; Dalin, J M (CERN) ; Garion, C (CERN) et al.
The first Large Hadron Collider (LHC) Long Shutdown (LS1) started in February 2013. It was triggered by the need to consolidate the 13-kA splices between the superconducting magnets to allow the LHC to reach safely its design energy of 14 TeV center of mass. [...]
2016 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 26 (2016) 4002706
In : 24th International Conference on Magnet Technology, Seoul, Korea, 18 - 23 Oct 2015, pp.4002706
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Arc detector system for extraction switches in LHC CERN
/ Dahlerup-Petersen, K (CERN) ; Coelingh , G J (CERN) ; Kuper, E (Novosibirsk, IYF) ; Ovchar, V (Novosibirsk, IYF) ; Zverev, S (Novosibirsk, IYF)
The opening switches, which will be used in case of quenches or other failures in CERN’s future LHC collider to extract the large amounts of energy stored in the magnetic field of the superconducting chains of main dipoles (8 chains with 1350 MJ each) and main quadrupoles (16 chains with about 24 MJ each) consist of an array of series/parallel connected, electro-mechanical D.C. breakers, specifically designed for this particular application. [...]
2006
Published version: PDF;
In : 20th Russian Conference on Charged Particle Accelerators, Novosibirsk, Russia, 10 - 14 Sep 2006, pp.255-257
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Design and operational aspects of a bi-polar semi-conductor switch as possible candidate for replacement of electro-mechanical switchgear in energy extraction systems for the LHC corrector magnet circuits
/ Coelingh, G J (CERN) ; Dahlerup-Petersen, K (CERN) ; Erokhin, A (CERN) ; Panev, B (CERN)
More than 600 DC opening switches assure the role of energy extraction in the powering circuits of the bipolar, superconducting beam corrector magnet chains in the LHC collider at CERN. Although the operational experience from several years of extensive use has proven the high reliability of the electro-mechanical breakers, their relatively high need for regular, preventive maintenance and subtle adjustments as well as their limited lifetime has stimulated the interest in considering alternative solutions. [...]
2014 - 4 p.
- Published in : 10.1109/IPMHVC.2014.7287323
In : 2014 IEEE International Power Modulator and High Voltage Conference, Santa Fe, NM, USA, 1 - 5 Jun 201, pp.508-511
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