Electromagnetic and mechanical design of a 56 mm aperture model dipole for the LHC

Ahlbäck, Jonny; Ikaheimo, J.; Järvi, J. Torbjörn; Leroy, D.; Oberli, L.; Perin, R.; Perini, D.; Russenschuck, Stephan; Salminen, J.; Савелайнен, М.; Soini, Jari; Spigo, G.; Tortschanoff, T.

doi:10.1109/20.305594

Cited by 11 publications

(5 citation statements)

References 2 publications

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“…The design concept for the magnet was inspired by the 1 m long LHC MBFISC model magnet (Ahlbäck et al 1994), and the collar thickness was chosen for maximum rigidity in the available space to minimize the spring-back effect after the collaring process.…”

Section: Mechanical Designmentioning

confidence: 99%

Nb3Sn 11 T Dipole for the High Luminosity LHC (CERN)

Bordini

Bottura

Devred

et al. 2019

Nb3Sn Accelerator Magnets

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This chapter describes the design of, and parameters for, the 11 T dipole developed at the European Organization for Nuclear Research (CERN) for the High Luminosity Large Hadron Collider (HL-LHC) project. The results for testing the short models as well as the first 5 m long magnet are also presented. Finally, the production process for the six units, of which four are to be installed in the HL-LHC, is described, with a description of the process for planning the installation. In 2020, these dipoles should be the first Nb 3 Sn magnets working in an accelerator.

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Section: Mechanical Designmentioning

confidence: 99%

Nb3Sn 11 T Dipole for the High Luminosity LHC (CERN)

Bordini

Bottura

Devred

et al. 2019

Nb3Sn Accelerator Magnets

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show abstract

“…This design concept is inspired by the MFISC [13] model and the collar thickness was chosen for maximum rigidity in the available space to minimize the spring-back effect after the collaring process. The removable pole allows the adjustment of the coil pre-compression at the poles.…”

Section: ) Removable Pole Designmentioning

confidence: 99%

Design of 11 T Twin-Aperture ${\rm Nb}_{3}{\rm Sn}$ Dipole Demonstrator Magnet for LHC Upgrades

Karppinen

Andreev

Apollinari

et al. 2012

IEEE Trans. Appl. Supercond.

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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 and FNAL have started a joint development program to demonstrate the feasibility of Nb 3 Sn technology for this purpose. The program started with the development and test of a 2-m-long single-aperture demonstrator magnet. The goal of the second phase is the design and construction of a series of 2-m-long twin-aperture demonstrator magnets with a nominal field of 11 T at 11.85 kA current. This paper describes the electromagnetic design and gives a forecast of the field quality including saturation of the iron yoke and persistent-current effects in the Nb 3 Sn coils. The mechanical design concepts based on separate collared coils, assembled in a vertically split iron yoke are also discussed.

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“…The Nb 3 Sn RRP-108/127 strand [9] used in the demonstrator magnet has a relatively large effective filament diameter of ~50 m as compared to ~5 µm in the Nb-Ti strands of the LHC main dipole cable [5]. As a consequence, the persistent current effect is significantly larger in the 11 T Nb 3 Sn dipole than in the 8.3 T Nb-Ti LHC main dipoles.…”

Section: A Magnetic Designmentioning

confidence: 99%

“…The design and technology of the demonstrator magnet relies on results of Nb 3 Sn magnet R&D programs at FNAL [4], and Nb-Ti LHC magnet development at CERN [5]. To meet the tight project schedule within the available budget, the demonstrator magnet is designed to make maximum use of the existing tooling, infrastructure, and magnet components at both laboratories.…”

Section: Introductionmentioning

confidence: 99%

Design and Fabrication of a Single-Aperture 11 T ${\rm Nb}_{3}{\rm Sn}$ Dipole Model for LHC Upgrades

Zlobin

Andreev

Apollinari

et al. 2012

IEEE Trans. Appl. Supercond.

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The planned upgrade of the LHC collimation system includes additional collimators to be installed in the dispersion suppressor areas of points 2, 3 and 7. To provide the necessary longitudinal space for the collimators, a replacement of 8.33 T Nb-Ti LHC main dipoles with 11 T dipoles based on Nb 3 Sn superconductor compatible with the LHC lattice and main systems is being considered. To demonstrate this possibility FNAL and CERN have started a joint program to develop a 2 m long single-aperture dipole magnet with the nominal field of 11 T at ~11.85 kA current and 60 mm bore. This paper describes the demonstrator magnet magnetic and mechanical designs and analysis, coil fabrication procedure. The Nb 3 Sn strand and cable parameters and test results are also reported.

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Electromagnetic and mechanical design of a 56 mm aperture model dipole for the LHC

Cited by 11 publications

References 2 publications

Nb3Sn 11 T Dipole for the High Luminosity LHC (CERN)

Nb3Sn 11 T Dipole for the High Luminosity LHC (CERN)

Design of 11 T Twin-Aperture ${\rm Nb}_{3}{\rm Sn}$ Dipole Demonstrator Magnet for LHC Upgrades

Design and Fabrication of a Single-Aperture 11 T ${\rm Nb}_{3}{\rm Sn}$ Dipole Model for LHC Upgrades

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