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Improved Quench Localization and Quench Propagation Velocity Measurements in the LHC Superconducting Dipole Magnets
/ Calvi, M ; Floch, E ; Kouzue, S ; Siemko, A
The series tests performed on the LHC superconducting magnets at cryogenic condition give a unique opportunity to understand the mechanisms responsible for the instabilities causing the so-called training quenches. The first series production tests demonstrated that the weak points in the LHC dipoles are the coil extremities in which the majority of the quenches are located. [...]
LHC-Project-Report-809; CERN-LHC-Project-Report-809.-
Geneva : CERN, 2005 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 15 (2005) 1209-12
Access to fulltext document: PDF; IEEE Published version, local copy: PDF;
In : Applied Superconductivity Conference: Harnessing the Magic, Jacksonville, FL, USA, 3 - 8 Oct 2004, pp.1209-12
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2.
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Axis Measurements, Field Quality and Quench Performance of the First LHC Short Straight Sections
/ Sanfilippo, S ; Bottura, L ; Calvi, M ; Chohan, V ; Durante, M ; Hagen, P ; Pugnat, P ; Smirnov, N ; Schnizer, P ; Sammut, N et al.
The series testing at 1.9 K of the 360 Short Straight Sections (SSS) for the Large Hadron Collider have started at CERN in September 2003. The SSS contain the lattice quadrupoles and correction magnets in a common cryostat. [...]
LHC-Project-Report-808; CERN-LHC-Project-Report-808.-
Geneva : CERN, 2005 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 15 (2005) 1098-101
Access to fulltext document: PDF; IEEE Published version, local copy: PDF;
In : Applied Superconductivity Conference: Harnessing the Magic, Jacksonville, FL, USA, 3 - 8 Oct 2004, pp.1098-101
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3.
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Conductor-Limited Quenches of LHC Superconducting Main Dipoles
/ Pojer, M ; Pugnat, P ; Siemko, A ; Verweij, A ; Vullierme, B
In the framework of the series tests of superconducting magnets for the LHC, a special procedure was developed at CERN to perform conductor-limited quenches at temperatures around 4.4 K. All results obtained on pre-series and series main dipoles tested to date will be presented with their analysis. [...]
LHC-Project-Report-807; CERN-LHC-Project-Report-807.-
Geneva : CERN, 2005 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 15 (2005) 1554-7
Access to fulltext document: PDF; IEEE Published version, local copy: PDF;
In : Applied Superconductivity Conference: Harnessing the Magic, Jacksonville, FL, USA, 3 - 8 Oct 2004, pp.1554-7
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4.
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Status of Production of the Superconducting Matching Quadrupoles for the LHC Insertions
/ Ostojic, R ; Catalan-Lasheras, N ; Kirby, G A ; Pérez, J C ; Prin, H ; Venturini-Delsolaro, W
Special individually powered superconducting quadrupoles are required for the LHC insertions. These units comprise quadrupole magnets of the MQM and MQY types and range in length from 5.4 m to 11.4 m. [...]
LHC-Project-Report-806; CERN-LHC-Project-Report-806.-
Geneva : CERN, 2005 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 15 (2005) 1094-7
Access to fulltext document: PDF; IEEE Published version, local copy: PDF;
In : Applied Superconductivity Conference: Harnessing the Magic, Jacksonville, FL, USA, 3 - 8 Oct 2004, pp.1094-7
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5.
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Status Report on the LHC Main Magnet Production
/ de Rijk, G ; Bajko, M ; Cornelis, M ; Durante, M ; Fessia, P ; Miles, J ; Modena, M ; Molinari, G ; Rinn, J ; Savary, F et al.
The LHC ring will contain 1232 main dipole and 382 main quadrupole twin aperture magnets. All main magnets are superconducting and employ NbTi/Cu Rutherford type cables operated at 1.9 K. [...]
LHC-Project-Report-805; CERN-LHC-Project-Report-805.-
Geneva : CERN, 2005 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 15 (2005) 1078-83
Access to fulltext document: PDF; IEEE Published version, local copy: PDF;
In : Applied Superconductivity Conference: Harnessing the Magic, Jacksonville, FL, USA, 3 - 8 Oct 2004, pp.1078-83
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6.
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Trends in Cable Magnetization and Persistent Currents during the Production of the Main Dipoles of the Large Hadron Collider
/ Bellesia, B ; Bottura, L ; Granata, V ; Le Naour, S ; Oberli, L ; Sanfilippo, S ; Santoni, C ; Scandale, Walter ; Schwerg, N ; Todesco, Ezio et al.
The production of more than 60% of superconducting cables for the main dipoles of the Large Hadron Collider has been completed. The results of the measurements of cable magnetization and the dependence on the manufacturers are presented. [...]
LHC-Project-Report-804; CERN-LHC-Project-Report-804.-
Geneva : CERN, 2005 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 15 (2005) 1213-16
Access to fulltext document: PDF; IEEE Published version, local copy: PDF;
In : Applied Superconductivity Conference: Harnessing the Magic, Jacksonville, FL, USA, 3 - 8 Oct 2004, pp.1213-16
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7.
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Future Accelerator Magnet Needs
/ Devred, Arnaud ; Gourlay, S A ; Yamamoto, A
Superconducting magnet technology is continually evolving in order to meet the demanding needs of new accelerators and to provide necessary upgrades for existing machines. A variety of designs are now under development, including high fields and gradients, rapid cycling and novel coil configurations. [...]
CERN-AT-2005-006-MAS; CARE-Conf-04-037-NED; CARE-Conf-2004-037-NED.-
Geneva : CERN, 2005 - 9 p.
- Published in : IEEE Trans. Appl. Supercond. 15 (2005) 1192-9
Access to fulltext document: PDF; Fulltext: PDF; IEEE Published version, local copy: PDF;
In : Applied Superconductivity Conference: Harnessing the Magic, Jacksonville, FL, USA, 3 - 8 Oct 2004, pp.1192-9
- CERN library copies
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9.
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A Cable-in-Conduit Superconductor for Pulsed Accelerator Magnets
/ Bottura, L ; Bruzzone, P ; Fischer, E ; Kauschke, M ; Moritz, G ; Vysotsky, V S ; Sytnikov, V E ; Wilson, M
Superconducting magnets for future accelerators such as the SIS-100 ring of the International Accelerator Facility at GSI-Darmstadt, or a superconducting injector at the LHC, require that the magnetic field is pulsed with high repetition rate and high reliability over periods of several years. [...]
CERN-AT-2005-004-MTM.
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2005. - 4 p.
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10.
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A Scaling Law for the Snapback in Superconducting Accelerator Magnets
/ Bottura, L ; Ambrosio, G ; Bauer, P ; Haverkamp, M ; Pieloni, T ; Sanfilippo, S ; Velev, G
The decay of the sextupole component in the bending dipoles during injection and the subsequent snapback at the start of beam acceleration are issues of common concern for all superconducting colliders built or in construction. Recent studies performed on LHC and Tevatron dipole magnets revealed many similarities in the snapback characteristics. [...]
CERN-AT-2005-003-MTM.-
Geneva : CERN, 2005 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 15 (2005) 1217-20
Access to fulltext document: PDF; IEEE Published version, local copy: PDF;
In : Applied Superconductivity Conference: Harnessing the Magic, Jacksonville, FL, USA, 3 - 8 Oct 2004, pp.1217-20
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11.
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Status of the Next European Dipole (NED) Activity of the Collaborated Accelerator Research in Europe (CARE) Project
/ Devred, Arnaud ; Baudouy, B ; Baynham, D Elwyn ; Boutboul, T ; Canfer, S ; Chorowski, M ; den Ouden, A ; Fabbricatore, P ; Farinon, S ; Fessia, P et al.
Plans for LHC upgrade and for the final focalization of linear colliders call for large aperture and/or high-performance dipole and quadrupole magnets that may be beyond the reach of conventional NbTi magnet technology. The Next European Dipole (NED) activity was launched on January 1st, 2004 to promote the development of high-performance, Nb$_{3}$Sn wires in collaboration with European industry (aiming at a non-copper critical current density of 1500Â A/mm2 at 4.2 K and 15 T) and to assess the suitability of Nb$_{3}$Sn technology to the next generation of accelerator magnets (aiming at an aperture of 88 mm and a conductor peak field of 15 T). [...]
CERN-AT-2005-002-MAS; CARE-Conf-04-020-NED; CARE-Conf-2004-020-NED.-
Geneva : CERN, 2005 - 7 p.
- Published in : IEEE Trans. Appl. Supercond. 15 (2005) 1106-12
Fulltext: PDF; IEEE Published version, local copy: PDF;
In : Applied Superconductivity Conference: Harnessing the Magic, Jacksonville, FL, USA, 3 - 8 Oct 2004
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12.
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Quench Propagation Ignition using Single-Mode Diode Laser
/ Trillaud, F ; Ayela, F (CNRS-CRTBT, Grenoble, France) ; Devred, Arnaud (CERN) ; Fratini, M (Pisa, Italy) ; Leboeuf, D (CEA/Sacla, Gif-Sur-Yvette, France) ; Tixador, P (CNRS-CRTBT, Grenoble, France)
The stability of NbTi-based multifilamentary composite wires subjected to local heat disturbances of short durations is studied in pool boiling helium conditions. [...]
CERN-AT-2005-001-MAS.
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2005. - 5 p.
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