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Consolidation of the LHC Superconducting Circuits: A Major Step towards 14 TeV Collisions
/ Tock, J Ph (CERN) ; Bertinelli, F (CERN) ; Bordry, F (CERN) ; Fessia, P (CERN) ; Ostojic, R (CERN) ; Perin, A (CERN) ; Prin, H (CERN) ; Savary, F (CERN) ; Scheuerlein, C (CERN) ; Ten Kate, H H J (CERN) et al.
Following the incident in one of the main dipole circuits of the Large Hadron Collider (LHC) in September 2008, a detailed analysis of all magnet circuits has been performed by a dedicated task force. This analysis has revealed critical issues in the design of the 13 kA splices between the superconducting dipole and quadrupole magnets. [...]
CERN-ATS-2012-197.-
Geneva : CERN, 2012 - 4 p.
- Published in : Conf. Proc.: C1205201 (2012) , pp. THPPD032
Fulltext: PDF; External link: Published version from JaCoW
In : 3rd International Particle Accelerator Conference, New Orleans, LA, USA, 20 - 25 May 2012, pp.3575
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2.
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Consolidation of the 13-kA Superconducting Magnet Circuits of the LHC at CERN
/ Lackner, F (CERN) ; Duret, M (CERN) ; Grand-Clement, L (CERN) ; Prin, H (CERN) ; Principe, R (CERN) ; Savary, F (CERN) ; Scheuerlein, C (CERN) ; Tock, J -Ph (CERN) ; Triquet, S (CERN) ; Verweij, A (CERN)
The first long shutdown (LS1) of the LHC machine at CERN started in February 2013. The main trigger for LS1 was the consolidation of the bus bar joints in the 13-kA superconducting magnet circuits. [...]
2015 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 25 (2015) 4802305
In : Applied Superconductivity Conference 2014, Charlotte, NC, USA, 10 - 15 Aug 2014, pp.4802305
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3.
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Status of the Consolidation of the LHC Superconducting Magnets and Circuits
/ Tock, J Ph (CERN) ; Atieh, S (CERN) ; Bodart, D (CERN) ; Bordry, F (CERN) ; Bourcey, N (CERN) ; Cruikshank, P (CERN) ; Dahlerup-Petersen, K (CERN) ; Dalin, J M (CERN) ; Garion, C (CERN) ; Musso, A (CERN) et al.
The first 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. [...]
2014 - 4 p.
- Published in : J. Phys.: Conf. Ser. 507 (2014) 032050
Fulltext: PDF;
In : 11th European Conference on Applied Superconductivity, Genova, Italy, 15 - 19 Sep 2013, pp.032050
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Consolidation of the 13 kA Splices in the Electrical Feedboxes of the LHC
/ Perin, A (CERN) ; Atieh, S (CERN) ; Duarte Ramos, D (CERN) ; Pirotte, O (CERN) ; Principe, R (CERN) ; Savary, F (CERN) ; Scheuerlein, C (CERN) ; Tock, J Ph (CERN) ; Verweij, A (CERN)
In 2008 a defective connection in one of the 13 kA dipole circuits of the LHC caused an electric breakdown that resulted in extensive damage in a sector of the accelerator. The investigation performed after the accident showed the necessity to consolidate the electrical splices of the 13 kA dipole and quadrupole circuits in order to operate the LHC at its nominal energy of 7 TeV. [...]
CERN-ATS-2012-199.-
Geneva : CERN, 2012 - 4 p.
- Published in : Conf. Proc.: C1205201 (2012) , pp. THPPD027
Fulltext: PDF; External link: Published version from JaCoW
In : 3rd International Particle Accelerator Conference, New Orleans, LA, USA, 20 - 25 May 2012, pp.3560
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5.
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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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6.
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Towards a Consolidation of LHC Superconducting Splices for 7 TeV Operation
/ Bertinelli, F (CERN) ; Catalan Lasheras, N (CERN) ; Fessia, P (CERN) ; Garion, C (CERN) ; Mathot, S (CERN) ; Perin, A (CERN) ; Scheuerlein, C (CERN) ; Sgobba, S (CERN) ; ten Kat, H (CERN) ; Tock, J P (CERN) et al.
Following the analysis of the September 2008 LHC incident, the assembly process and the quality assurance of the main 13 kA interconnection splices were improved, with new measurement and diagnostics methods introduced. During the 2008-2009 shutdown ~5% of these 10 000 splices were newly assembled with these improvements implemented, but essentially maintaining the original design. [...]
CERN-ATS-2010-144.-
Geneva : CERN, 2010 - 4 p.
Fulltext: PDF; External link: Published version from JACoW
In : 1st International Particle Accelerator Conference, Kyoto, Japan, 23 - 28 May 2010, pp.MOPEB042
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7.
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The Second LHC Long Shutdown (LS2) for the Superconducting Magnets
/ Tock, Jean-Philippe (CERN) ; Bednarek, Mateusz (CERN) ; Bottura, Luca (CERN) ; Karentzos, Efstathios (CERN ; Natl. Tech. U., Athens) ; Le Naour, Sandrine (CERN) ; Meuter, Florian (CERN) ; Pojer, Mirko (CERN) ; Scheuerlein, Christian (CERN) ; Todesco, Ezio (CERN) ; Tommasini, Davide (CERN) et al.
The Large Hadron Collider (LHC) has been delivering data to the physics experiments since 2009. It first operated at a centre of mass energy of 7 TeV and 8 TeV up to the first long shutdown (LS1) in 2013-14. [...]
CERN-ACC-2018-114.-
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-MOPMF056
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPMF056
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8.
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Consolidation of the 13 kA Interconnects in the LHC for Operation at 7 TeV
/ Verweij, A P (CERN) ; Lasheras, N C (CERN) ; Tock, J P (CERN) ; Willering, G P (CERN) ; Steckert, J (CERN) ; Perin, A (CERN) ; Scheuerlein, C (CERN) ; Mathot, S (CERN) ; Koratzinos, M (CERN) ; Garion, C (CERN) et al.
The accident in the LHC in September 2008 occurred in an interconnection between two magnets of the 13 kA dipole circuit. Successive measurements of the resistance of other interconnects revealed other defective joints, even though the SC cables were properly connected. [...]
2011
- Published in : IEEE Trans. Appl. Supercond. 21 (2011) 2376-2379
IEEE Published version, local copy: PDF;
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