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2011_MT22
34 items
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1.
Limits to High Field Magnets for Particle Accelerators / Todesco, E (CERN) ; Ferracin, P (LBL, Berkeley)
What is the ultimate limit to high fields in superconducting magnets for particle accelerators? In this paper we review the present status of the technology, outlining the main limitations. We first analyse the needed margin for operating a magnet in an accelerator. [...]
CERN-ATS-2012-052.- Geneva : CERN, 2012 - 8 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4003106 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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2.
Conceptual Design of a Large-aperture Dipole Magnet for HL-LHC Upgrade / Xu, K (KEK, Tsukuba) ; Kikuchi, A (Tsukuba Magnet Lab.) ; Nakamoto, T (KEK, Tsukuba) ; Ogitsu, T (KEK, Tsukuba) ; Sasaki, K (KEK, Tsukuba) ; Takeuchi, T (Tsukuba Magnet Lab.) ; Terashima, A (KEK, Tsukuba) ; Todesco, E (CERN) ; Tsuchiya, K (KEK, Tsukuba) ; Yamamoto, A (KEK, Tsukuba)
The development of a large-aperture (120-180 mm) dipole magnet is proposed in the framework of the CERN-KEK cooperation program. The application target is the D1 magnet (separation dipoles) replacement for the HL-LHC (High Luminosity - Large Hadron Collider) upgrade. [...]
CERN-ATS-2012-051.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4901404 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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3.
Design and Development of Separation Septa for the CERN PS Booster Upgrade / Hourican, M (CERN) ; Balhan, B (CERN) ; Borburgh, J (CERN) ; Masson, T (CERN)
The CERN PS Booster project foresees the injection of 160 MeV H- ions into the booster from Linac 4. For this substantial upgrade, a system of 5 pulsed magnets (BIDIS) and 3 vertical septa (BISMV) will distribute the Linac pulses into the four-vertically separated Booster injection lines before being injected into the rings. [...]
CERN-ATS-2012-050.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4000304 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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4.
Steady State Heat Deposits Modeling in the Nb$_{3}$Sn Quadrupole Magnets for the Upgrade of the LHC Inner Triplet / Supported by Fermi Research Alliance, LLC and DOE, USA Collaboration
In hadron colliders such as the LHC, the energy deposited in the superconductors by the particles lost from the beams or coming from the collision debris may provoke quenches detrimental to the accelerator operation. In previous papers, a Network Model has been used to study the thermodynamic behavior of magnet coils and to calculate the quench levels in the LHC magnets for expected beam loss profiles. [...]
CERN-ATS-2012-049.- Geneva : CERN, 2012 - 6 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4003704 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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5.
Magnetic Measurement of the Current Center Line of the Toroidal Field Coil of ITER at Room Temperature / Deniau, L (CERN) ; Baynham, E (Rutherford) ; Buzio, M (CERN) ; Knaster, J (Euratom, St. Paul Lez Durance) ; Savary, F (CERN)
Geometrical deformations and assembly errors in the ITER Toroidal Field (TF) coils will lead to magnetic field perturbations, which could degrade plasma confinement and eventually lead to disruption. Extensive computational studies of the influence of coil deformations and assembly errors on plasma behavior have given the basis for definition of the geometric tolerance of the Current Centre Line (CCL) of the winding pack of the TF coil [...]
CERN-ATS-2012-048.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 9001704 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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6.
Design of the HTS Current Leads for ITER / Ballarino, A (CERN) ; Bauer, P (Euratom, St. Paul Lez Durance) ; Bi, Y (Hefei, Inst. Plasma Phys.) ; Devred, A (Euratom, St. Paul Lez Durance) ; Ding, K (Hefei, Inst. Plasma Phys.) ; Foussat, A (Euratom, St. Paul Lez Durance) ; Mitchell, N (Euratom, St. Paul Lez Durance) ; Shen, G (Hefei, Inst. Plasma Phys.) ; Song, Y (Hefei, Inst. Plasma Phys.) ; Taylor, T (CERN) et al.
Following the design, fabrication and test of a series of trial leads, designs of the three types of current leads required for ITER have been developed, and targeted trials of specific features are in progress on the way to fabrication and testing of prototype units. These leads are of the hybrid type with a cold section based on the use of high temperature superconductor (HTS) and a resistive section cooled by forced flow of helium gas, optimized for operation at 68 kA, 55 kA and 10 kA. [...]
CERN-ATS-2012-047.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4800304 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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7.
Finite Element Modeling in 3D of the Impact of Superfluid Helium Filled Micro-channels on the Heat Transfer through LHC Type Cable Insulation / Bielert, E (CERN ; Twente U., Enschede) ; Verweij, A (CERN) ; ten Kate, H (CERN ; Twente U., Enschede)
For a future luminosity upgrade of CERN’s Large Hadron Collider, a drastically improved heat removal in the inner triplet quadrupole magnets is required. One of the necessary improvements involves the cable insulation. [...]
CERN-ATS-2012-046.- Geneva : CERN, 2012 - 6 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4701205 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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8.
Advanced Accelerator Magnets for Upgrading the LHC / Rossi, L (CERN) ; Bottura, K (CERN) ; de Rijk, G (CERN) ; Todesco, E (CERN) /Work partly supported by FP7-EuCARD Collaboration
The Large Hadron Collider is working at about half its design value, limited by the defective splices of the magnet interconnections. While the full energy will be attained after the splice consolidation in 2014, CERN is preparing a plan for a Luminosity upgrade (High Luminosity LHC) around 2020 and has launched a pre-study for exploring an Energy upgrade (High Energy LHC) around 2030. [...]
CERN-ATS-2012-045.- Geneva : CERN, 2012 - 9 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4002008 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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9.
Modeling of the Voltage Waves in the LHC Main Dipole Circuits / Ravaioli, E (CERN) ; Dahlerup-Petersen, K (CERN) ; Formenti, F (CERN) ; Steckert, J (CERN) ; Thiesen, H (CERN) ; Verweij, A (CERN)
When a fast power abort is triggered in the LHC main dipole chain, voltage transients are generated at the output of the power converter and across the energy-extraction switches. The voltage waves propagate through the chain of 154 superconducting dipoles and can have undesired effects leading to spurious triggering of the quench protection system and firing of the quench heaters. [...]
CERN-ATS-2012-044.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 9002704 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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10.
Impact of the Voltage Transients after a Fast Power Abort on the Quench Detection System in the LHC Main Dipole Chain / Ravaioli, E (CERN) ; Dahlerup-Petersen, k (CERN) ; Formenti, F (CERN) ; Montabonnet, V (CERN) ; Pojer, M (CERN) ; Schmidt, R (CERN) ; Siemko, A (CERN) ; Solfaroli Camillocci, A (CERN) ; Steckert, J (CERN) ; Thiesen, H (CERN) et al.
A Fast Power Abort in the LHC superconducting main dipole circuit consists in the switch-off of the power converter and the opening of the two energy-extraction switches. Each energy-extraction unit is composed of redundant electromechanical breakers, which are opened to force the current through an extraction resistor. [...]
CERN-ATS-2012-043.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 9002504 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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11.
The LHC Incident in Sector 3-4: A Simplified Mechanical Model to Explain the Mechanical Damages / Fessia, P (CERN) ; Auchmann, B (CERN) ; Lackner, F (CERN) ; Regis, F (CERN)
On the 19th of September 2008 during powering tests of the LHC main dipole circuit in sector 3-4 an electrical fault occurred. A part of the most important resulting damages were caused by the displacements of cryostated cold masses due to the effect of an over pressurization in the insulation vacuum enclosure. [...]
CERN-ATS-2012-042.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4905304 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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12.
Development of a New Insulation Approach for the LHC Main 13 kA Interconnection Splices / Lackner, F (CERN) ; Bertinelli, F (CERN) ; Fessia, P (CERN) ; Lopez, R (CERN) ; Prin, H (CERN) ; Tock, J Ph (CERN)
In the long LHC (Large Hadron Collider) shutdown in 2013 it is foreseen to intervene on all the 13 kA interconnections in order to guarantee the necessary margin and redundancy to provide safe LHC operation at 7 TeV per beam. This implies reinforcement of the present interconnection configuration including a new insulation scheme of the busbars. [...]
CERN-ATS-2012-041.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 7700204 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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13.
13 kA Superconducting Busbars Manufacturing Process / Principe, R (CERN) ; Fessia, P (CERN) ; Fornasiere, E (CERN)
In the LHC, the superconducting Main Bending magnets and Quadrupole magnets are series-connected electrically in different excitation circuits by means of superconducting busbars, carrying a maximum current of 13 kA. These superconducting busbars consist of a superconducting Rutherford cable thermally and electrically coupled to a copper section all along the length. [...]
CERN-ATS-2012-040.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4801604 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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14.
Analysis of Defective Interconnections of the 13 kA LHC Superconducting Bus Bars / Granieri, P P (CERN ; Ecole Polytechnique, Lausanne, LPAP) ; Casali, M (Bologna U.) ; Bianchi, M (Bologna U.) ; Breschi, M (Bologna U.) ; Bottura, L (CERN) ; Willering, G (CERN)
The interconnections between Large Hadron Collider (LHC) main dipole and quadrupole magnets are made of soldered joints of two superconducting cables stabilized by a copper bus bar. The 2008 incident revealed the possible presence of defects in the interconnections of the 13 kA circuits that could lead to unprotected resistive transitions. [...]
CERN-ATS-2012-039.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4000504 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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15.
Thermally Enhanced Cable Insulation for the Nb-Ti High Luminosity LHC Inner Triplet Model / Granieri, P P (CERN ; Ecole Polytechnique, Lausanne, LPAP) ; Fessia, P (CERN) ; Richter, D (CERN) ; Tommasini, D (CERN)
A new concept of polyimide electrical insulation for superconducting cables of accelerator magnets was developed in the last years. Its enhanced He II permeability allows a significant improvement of the heat extraction from the coil. [...]
CERN-ATS-2012-038.- Geneva : CERN, 2012 - 6 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 7700404 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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16.
Magnetic Qualification of Permanent Magnet Quadrupoles for CERN’s Linac4 / Buzio, M (CERN) ; Golluccio, G (CERN ; Sannio U.) ; Lombardi, A (CERN) ; Mateo, F (CERN)
This paper summarizes the results of the magnetic measurements done to qualify prototypes and series permanent- magnet quadrupoles for the new Linac4, currently in construction at CERN. The results, obtained with a combination of stretched wire and rotating coil techniques, include the individually tuned integrated field gradient, multipoles, magnetic axis and field direction. [...]
CERN-ATS-2012-037.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4004304 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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17.
Compact Inter-cryomodule Combined Corrector Magnets for the HIE-ISOLDE Project at CERN / Bauche, J (CERN)
The new LINAC that will replace the current REX accelerating structure of the ISOLDE experiment at CERN will be made of superconducting cavities separated by small inter-tank spaces. Strong but compact normal conducting beam trajectory corrector magnets will have to be installed in these spaces without interfering with the adjacent vacuum and instrumentation equipment. [...]
CERN-ATS-2012-036.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4001004 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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18.
Metrological Performance of a Ferrimagnetic Resonance Marker for the Field Control of the CERN Proton Synchrotron / Arpaia, P (Sannio U.) ; Buzio, M (CERN) ; Caspers, F (CERN) ; Golluccio, G (Sannio U.) ; Oberson, D (CERN)
In particle accelerators, “field markers” provide a digital trigger when the magnetic field crosses a given threshold. In this paper, the metrological characterization of a magnetic field marker, based on a ferrimagnetic resonance transducer referencing the flux sensed by a coil, is reported. [...]
CERN-ATS-2012-035.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 9001904 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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19.
The SMC (Short Model Coil) dipole: An R&D program for Nb$_{3}$Sn accelerator magnets / Perez, J C (CERN) ; Bajko, M (CERN) ; Bordini, B (CERN) ; Canfer, S (Rutherford) ; Ellwood, G (Rutherford) ; Feuvrier, J (CERN) ; Guinchard, M (CERN) ; Karppinen, M (CERN) ; Kokkinos, C (CERN) ; Manil, P (Saclay) et al.
The Short Model Coil (SMC) assembly has been designed, as test bench for short racetrack coils wound with Nb$_{3}$Sn cable. The mechanical structure comprises an iron yoke surrounded by a 20 mm thick aluminium alloy shell, and includes four loading pads that transmit the required pre-compression from the outer shell into the two coils. [...]
CERN-ATS-2012-034.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4002704 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011, pp.4002704
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20.
Design of 11 T Twin-Aperture Nb$_{3}$Sn Dipole Demonstrator Magnet for LHC Upgrades / Karppinen, M (CERN) ; Andreev, N (Fermilab) ; Apollinari, G (Fermilab) ; Auchmann, B (CERN) ; Barz, E (Fermilab) ; Bossert, R (Fermilab) ; Kashikhin, V V (Fermilab) ; Nobrega, A (Fermilab) ; Novitski, I (Fermilab) ; Rossi, L (CERN) et al.
The LHC collimation upgrade foresees two additional collimators installed in the dispersion suppressor regions of points 2, 3 and 7. To obtain the necessary longitudinal space for the collimators, a solution based on an 11 T dipole as replacement of the 8.33 T LHC main dipoles is being considered. [...]
CERN-ATS-2012-033.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4901504 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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21.
Extensive Characterization of the 1 mm PIT Nb$_{3}$Sn strand for the 13-T FRESCA2 Magnet / Bordini, B (CERN) ; Bottura, L (CERN) ; Mondonico, G (U. Geneva (main)) ; Oberli, L (CERN) ; Richter, D (CERN) ; Seeber, B (U. Geneva (main)) ; Senatore, C (U. Geneva (main)) ; Takala, E (CERN) ; Valentinis, D (CERN)
In the framework of the EuCARD program, CERN is participating in the development of a 13 T 100-mm-aperture dipole magnet to upgrade the superconducting cable test facility FRESCA at CERN. The conductor candidates for building this magnet are two 1-mm Nb$_{3}$Sn strands: the Powder In Tube (PIT) produced by Bruker-EAS and the 132/169 RRP by Oxford Superconducting Technology (OST). [...]
CERN-ATS-2012-031.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 6000304 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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22.
Impact of the Residual Resistivity Ratio on the Stability of Nb$_{3}$Sn Magnets / Bordini, B (CERN) ; Bottura, L (CERN) ; Oberli, L (CERN) ; Rossi, L (CERN) ; Takala, E (CERN)
The CERN Large Hadron Collider (LHC) is envisioned to be upgraded in 2020 to increase the luminosity of the machine. The major upgrade will consist in replacing the NbTi quadrupole magnets of the interaction regions with larger aperture magnets [...]
CERN-ATS-2012-030.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4705804 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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23.
The SMC (Short Model Coil) Nb$_{3}$Sn Program: FE Analysis with 3D Modeling / Kokkinos, C (CERN) ; Bajko, M (CERN) ; Guinchard, M (CERN) ; Karppinen, M (CERN) ; Manil, P (IRFU, Saclay) ; Perez, J C (CERN) ; Regis, F (CERN)
The SMC (Short Model Coil) project aims at testing superconducting coils in racetrack configuration, wound with Nb$_{3}$Sn cable. The degradation of the magnetic properties of the cable is studied by applying different levels of pre-stress. [...]
CERN-ATS-2012-029.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4900705 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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24.
Construction of the CERN Fast Cycled Superconducting Dipole Magnet Prototype / Borgnolutti, F (CERN) ; Auchmann, B (CERN) ; Bottura, L (CERN) ; Carra, F (CERN) ; Foffano, G (CERN) ; Gomes De Faria, J M (CERN) ; Kalouguine, O (CERN) ; Kirby, G (CERN) ; Lopez, C (CERN) ; Tommasini, D (CERN)
CERN is pursuing a small scale R&D; on a fast cycled superconducting dipole magnet (FCM) of interest for the upgrade plan of the LHC accelerator complex. The FCM dipole prototype being built has a number of novel features if compared to other magnets for similar applications. [...]
CERN-ATS-2012-028.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4001604 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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25.
Engineering Design and Manufacturing Challenges for a Wide-Aperture, Superconducting Quadrupole Magnet / Kirby, G A (CERN) ; Auchmann, B (CERN) ; Bielert, E (CERN) ; Fessia, P (CERN) ; Karppinen, M (CERN) ; Lepoittevin, B (CERN) ; Lorin, C (CERN) ; Luzieux, S (CERN) ; Perez, J C (CERN) ; Russenschuck, S (CERN) et al.
The design and construction of a wide-aperture, superconducting quadrupole magnet for the LHC insertion region is part of a study towards a luminosity upgrade of the LHC at CERN. The engineering design of components and tooling, the procurement, and the construction work presented in this paper includes innovative features such as more porous cable insulation, a new collar structure allowing horizontal assembly with a hydraulic collaring press, tuning shims for the adjustment of field quality, a fishbone like structure for the ground-plane insulation, and an improved quench-heater design. [...]
CERN-ATS-2012-027.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4001804 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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26.
Comparison between Electromagnetic Models and Magnetic Measurements in the LHC Magnets / Hagen, P (CERN) ; Auchmann, B (CERN) ; Todesco, E (CERN)
We present a comparison between the electromagnetic model of the main LHC magnets and the magnetic measurements carried out during production. The goal of this study is to test the validity range of the model and to uncover discrepancies between models and reality [...]
CERN-ATS-2012-026.- Geneva : CERN, 2012 - 6 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 9000104 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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27.
The EuCARD High Field Magnet Project / de Rijk, G (CERN) /FP7 Research Infrastructures project EuCARD Collaboration
In the EC FP7 program EuCARD (European Coordination for Accelerator Research & Development) the subject of work-package 7 is High Field Magnets. The aim of the HFM work-package is to develop technologies for magnets in the range 13 T - 20 T for accelerator applications like HL-LHC and HE-LHC. [...]
CERN-ATS-2012-025.- Geneva : CERN, 2012 - 6 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4301204 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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28.
Design of the EuCARD High-Field Model Dipole Magnet FRESCA2 / Milanese, A (CERN) ; Devaux, M (Saclay) ; Durante, M (Saclay) ; Manil, P (Saclay) ; Perez, J C (CERN) ; Rifflet, J M (Saclay) ; de Rijk, G (CERN) ; Rondeaux, F (Saclay) /FP7 Research Infrastructures project EuCARD Collaboration
This paper reports on the design of FRESCA2, a dipole magnet model wound with Nb$_{3}$Sn Rutherford cable. This magnet is one of the deliverables of the High Field Magnets work package of the European FP7-EuCARD project. [...]
CERN-ATS-2012-024.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4002604 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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29.
Design, Manufacture and Measurements of Permanent Quadrupole Magnets for Linac4 / Tommasini, D (CERN) ; Buzio, M (CERN) ; Thonet, P (CERN) ; Vorozhtsov, A (CERN ; Dubna, JINR)
Compact quadrupole magnets are required for the CCDTL (Cell-Coupled Drift Tube Linac) of Linac 4, a 160 MeV linear accelerator of negative hydrogen ions which will replace the old 50 MeV proton Linac2 at CERN. The magnets, of an overall physical length of 140 mm and an aperture diameter of 45 mm, are based on Sm2Co17 blocks and can provide an integrated gradient of up to 1.6 Tesla. [...]
CERN-ATS-2012-023.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4000704 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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30.
Dipole Magnets for the LHeC Ring-Ring Option / Tommasini, D (CERN) ; Buzio, M (CERN) ; Chritin, R (CERN)
The Ring-Ring option of a Large Hadron electron Collider (LHeC) requires 3080 bending magnets, 5.35-meter-long each providing a magnetic field ranging from 0.0127 T at 10 GeV to 0.0763 T at 60 GeV. Main issues in the design of these magnets are the very low injection field, constituting a challenge in achieving a satisfactory field reproducibility from cycle to cycle, and the required compactness to fit in the existing LHC tunnel. [...]
CERN-ATS-2012-022.- Geneva : CERN, 2012 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4000203 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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31.

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32.

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33.
Slip-Stick Mechanism in Training the Superconducting Magnets in the Large Hadron Collider / Granieri, P P (CERN ; EPFL, Lausanne) ; Lorin, C (CERN) ; Todesco, E (CERN)
Superconducting magnets can exhibit training quenches during successive powering to reaching nominal performance. The slip–stick motion of the conductors is considered to be one of the mechanisms of training. [...]
CERN-ATS-2012-003.- Geneva : CERN, 2011 - 7 p. - Published in : IEEE Trans. Appl. Supercond. 21 (2011) 3555-3560 Fulltext: PDF; IEEE Published version, local copy: PDF;
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34.
An Experimental Setup to Measure the Minimum Trigger Energy for Magneto-Thermal Instability in Nb$_{3}$Sn Strands / Takala, E (CERN) ; Bordini, B (CERN) ; Bremer, J (CERN) ; Balle, C (CERN) ; Bottura, L (CERN) ; Rossi, L (CERN)
Magneto-thermal instability may affect high critical current density Nb$_{3}$Sn superconducting strands that can quench even though the transport current is low compared to the critical current with important implications in the design of next generation superconducting magnets. The instability is initiated by a small perturbation energy which is considerably lower than the Minimum Quench Energy (MQE) [...]
CERN-ATS-2012-032.- Geneva : CERN, 2012 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 22 (2012) 6000704 Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
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