Magnetic Design and Code Benchmarking of the SMC (Short Model Coil) Dipole Magnet

Manil, P.; Regis, F.; Rochford, J.; Fessia, P.; Canfer, Simon; Baynham, E.; Nunio, F.; Rijk, G. de; Védrine, P.

doi:10.1109/tasc.2009.2039343

Cited by 12 publications

(7 citation statements)

References 9 publications

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“…An external aluminium ring applies a mechanical preload on the coil thanks to the differential thermal contraction. The preload can be adjusted by means of suitable bladders, keys and longitudinal rods [11].…”

Section: The Short Model Coilmentioning

confidence: 99%

Analysis of the quench propagation along Nb3Sn Rutherford cables with the THELMA code. Part II: Model predictions and comparison with experimental results

et al. 2016

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a b s t r a c tTo improve the technology of the new generation of accelerator magnets, prototypes are being manufactured and tested in several laboratories. In parallel, many numerical analyses are being carried out to predict the magnets behaviour and interpret the experimental results. This paper focuses on the quench propagation velocity, which is a crucial parameter as regards the energy dissipation along the magnet conductor. The THELMA code, originally developed for cable-in-conduit conductors for fusion magnets, has been used to study such quench propagation. To this purpose, new code modules have been added to describe the Rutherford cable geometry, the material non-linear thermal properties and to describe the thermal conduction problem in transient regime. THELMA can describe the Rutherford cable at the strand level, modelling both the electrical and thermal contact resistances between strands and enabling the analysis of the effects of local hot spots and quench heaters. This paper describes the model application to a sample of Short Model Coil tested at CERN: a comparison is made between the experimental results and the model prediction, showing a good agreement. A comparison is also made with the prediction of the most common analytical models, which give large inaccuracies when dealing with low n-index cables like Nb 3 Sn cables.

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Section: The Short Model Coilmentioning

confidence: 99%

Analysis of the quench propagation along Nb3Sn Rutherford cables with the THELMA code. Part II: Model predictions and comparison with experimental results

et al. 2016

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“…The coils have been designed to get the magnetic peak field in the coil straight section [4]. Two spacers reduce by 0.5 T the magnetic field on the coil ends.…”

Section: Coilsmentioning

confidence: 99%

“…An adapted support structure is used to perform training studies on different types of cables while investigating the pre-stress influence on coil behaviour. Variable pre-stresses can be applied on the coil pack in the three directions to explore the mechanical stress limit [4], [5].…”

Section: Introductionmentioning

confidence: 99%

The Short Model Coil (SMC) Dipole: An R&D Program Towards ${\rm Nb}_{3}{\rm Sn}$ Accelerator Magnets

Bajko

Bordini

Canfer

et al. 2012

IEEE Trans. Appl. Supercond.

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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. The outer shell is pre-tensioned with mechanical keys that are inserted with the help of pressurized bladders and two 30 mm diameter aluminium alloy rods provide the axial loading to the coil ends. The outer shell, the axial rods, and the coils are instrumented with strain gauges, which allow precise monitoring of the loading conditions during the assembly and at cryogenic temperature during the magnet test. Two SMC assemblies have been completed and cold tested in the frame of a European collaboration between CEA (FR), CERN and STFC (UK) and with the technical support from LBNL (US). This paper describes the main features of the SMC assembly, the experience from the dummy assemblies, the fabrication of the coils, and discusses the test results of the cold tests showing a peak field of 12.5 T at 1.9 K after training.

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“…The same parameters are shared, in terms of current excitation, geometry, number of strands and turns. The SMC cable properties are described in [3].…”

Section: B Magnetic Analysismentioning

confidence: 99%

“…Several software packages have been used to analyze the magnetic and mechanical design of the SMC project, as they have been reported in [3]- [6]. New available features in the software packages and in their interfaces, provided the possibility to develop a new modeling approach to simplify P.Manil, is with CEA/Saclay/IRFU/SIS, 91191 Gif-sur-Yvette, France (email: pierre.manil@cea.fr).…”

Section: Introductionmentioning

confidence: 99%

The SMC (Short Model Coil) ${\rm Nb}_{3}{\rm Sn}$ Program: FE Analysis With 3D Modeling

Kokkinos

Pérez

Karppinen

et al. 2012

IEEE Trans. Appl. Supercond.

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Magnetic Design and Code Benchmarking of the SMC (Short Model Coil) Dipole Magnet

Cited by 12 publications

References 9 publications

Analysis of the quench propagation along Nb3Sn Rutherford cables with the THELMA code. Part II: Model predictions and comparison with experimental results

Analysis of the quench propagation along Nb3Sn Rutherford cables with the THELMA code. Part II: Model predictions and comparison with experimental results

The Short Model Coil (SMC) Dipole: An R&D Program Towards ${\rm Nb}_{3}{\rm Sn}$ Accelerator Magnets

The SMC (Short Model Coil) ${\rm Nb}_{3}{\rm Sn}$ Program: FE Analysis With 3D Modeling

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