Fabrication of the 7.3-m-Long Coils for the Prototype of MQXFB, the Nb3Sn Low-b Quadrupole Magnet for the HiLumi LHC

Lackner, F.; Scheuerlein, C.; Sahner, T.; Michels, M.A.J.; Semeraro, Michela; Bourcey, Nicolas; Cavanna, Eugenio; Revilak, Philipp; Genestier, Thibault; Axensalva, Jerome; Principe, R.; Ferracin, P.; Prin, H.; Savary, F.; Ambrosio, G.; Todesco, E.; Duret, M.F.; Triquet, Stephane; Pozzobon, Marc; Luzieux, Sebastien; Pérez, Juan Carlos

doi:10.1109/tasc.2018.2792466

“…The production of MQXFB coils started in 2016 with two copper coils followed by two low performance Nb3Sn RRP conductor (CR001, CR002, CR101 and CR102) [14]. In spring 2017, the production of the coils for the first prototype started (CR104-CR109) [15]. Following a series of critical nonconformities (see Fig.…”

Section: A Coil Productionmentioning

confidence: 99%

“…Each production step is followed by an electrical qualification test [15]. The final acceptance of the coil is based on the electrical tests after impregnation.…”

Section: Electrical Testsmentioning

confidence: 99%

Progress in the Development of the Nb₃Sn MQXFB Quadrupole for the HiLumi Upgrade of the LHC

Bermúdez

¹

,

Ambrosio

²

,

Apollinari

³

et al. 2021

IEEE Trans. Appl. Supercond.

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The high-luminosity upgrade of the Large Hadron Collider (HL-LHC) requires new high field and large-aperture quadrupole magnets for the low-beta inner triplets (MQXF). With a nominal operating gradient of 132.2 T/m in a 150 mm aperture and a conductor peak field of 11.3 T, the new quadrupole magnets are based on Nb3Sn superconducting technology. After a series of short models constructed in close collaboration by LARP (LHC Accelerator Research Program) and CERN, the development program is entering in the series production phase with CERN on one side and the US Accelerator Upgrade Project (US-AUP) on the other side assembling and testing full-length magnets. This paper describes the status of the development activities at CERN, in particular on the cold powering test of the first MQFXB prototype and on the construction of the second full scale prototype. Critical operations such as reaction heat treatment, coil impregnation and magnet assembly are discussed. Finally, the plan towards the series production is described

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“…Since the beginning of the development of the MQXF magnet, the fabrication of the coils has proceed in parallel in the US laboratories and at CERN [11]- [16]. Short model coils from US and CERN were identical, and therefore usable in the same magnet.…”

Section: Coil Fabricationmentioning

confidence: 99%

Erratum to “The HL-LHC Low-β Quadrupole Magnet MQXF: From Short Models to Long Prototypes” [Aug 19 Art. no. 4001309]

Ferracin

¹

,

Ambrosio

²

,

Anerella

³

et al. 2020

IEEE Trans. Appl. Supercond.

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Among the components to be upgraded in LHC interaction regions for the HiLumi-LHC projects are the inner triplet (or low-β) quadrupole magnets, denoted as Q1, Q2a, Q2b, and Q3. The new quadrupole magnets, called MQXF, are based on Nb3Sn superconducting magnet technology and operate at a gradient of 132.6 T/m with a conductor peak field of 11.4 T. The Q1 and Q3 are composed by magnets (called MQXFA) fabricated by the US Accelerator Upgrade Project (AUP) with a magnetic length of 4.2 m. The Q2a and Q2b consists of magnets (called MQXFB) fabricated by CERN with a magnetic length of 7.15 m. After a series of short models, constructed in close collaboration by the US and CERN, the development program is now entering in the prototyping phase, with CERN on one side and BNL, FNAL, and LBNL on the other side assembling and testing their first long magnets. We provide in this paper a description of the status of the MQXF program, with a summary of the short model test results, including quench performance, and mechanics, and an update on the fabrication, assembly and test of the long prototypes.

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The HL-LHC Low-β Quadrupole Magnet MQXF: From Short Models to Long Prototypes

Ferracin

¹

,

Ambrosio

²

,

Anerella

³

et al. 2019

IEEE Trans. Appl. Supercond.

Self Cite

View full text Add to dashboard Cite

Among the components to be upgraded in LHC interaction regions for the HiLumi-LHC projects are the inner triplet (or low-β) quadrupole magnets, denoted as Q1, Q2a, Q2b, and Q3. The new quadrupole magnets, called MQXF, are based on Nb3Sn superconducting magnet technology and operate at a gradient of 132.6 T/m with a conductor peak field of 11.4 T. The Q1 and Q3 are composed by magnets (called MQXFA) fabricated by the US Accelerator Upgrade Project (AUP) with a magnetic length of 4.2 m. The Q2a and Q2b consists of magnets (called MQXFB) fabricated by CERN with a magnetic length of 7.15 m. After a series of short models, constructed in close collaboration by the US and CERN, the development program is now entering in the prototyping phase, with CERN on one side and BNL, FNAL, and LBNL on the other side assembling and testing their first long magnets. We provide in this paper a description of the status of the MQXF program, with a summary of the short model test results, including quench performance, and mechanics, and an update on the fabrication, assembly and test of the long prototypes.

show abstract

Fabrication of the 7.3-m-Long Coils for the Prototype of MQXFB, the Nb3Sn Low-b Quadrupole Magnet for the HiLumi LHC

Cited by 3 publications

References 6 publications

Progress in the Development of the Nb₃Sn MQXFB Quadrupole for the HiLumi Upgrade of the LHC

Progress in the Development of the Nb₃Sn MQXFB Quadrupole for the HiLumi Upgrade of the LHC

Erratum to “The HL-LHC Low-β Quadrupole Magnet MQXF: From Short Models to Long Prototypes” [Aug 19 Art. no. 4001309]

The HL-LHC Low-β Quadrupole Magnet MQXF: From Short Models to Long Prototypes

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Fabrication of the 7.3-m-Long Coils for the Prototype of MQXFB, the Nb3Sn Low-b Quadrupole Magnet for the HiLumi LHC

Cited by 3 publications

References 6 publications

Progress in the Development of the Nb3Sn MQXFB Quadrupole for the HiLumi Upgrade of the LHC

Progress in the Development of the Nb3Sn MQXFB Quadrupole for the HiLumi Upgrade of the LHC

Erratum to “The HL-LHC Low-β Quadrupole Magnet MQXF: From Short Models to Long Prototypes” [Aug 19 Art. no. 4001309]

The HL-LHC Low-β Quadrupole Magnet MQXF: From Short Models to Long Prototypes

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Product

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Progress in the Development of the Nb₃Sn MQXFB Quadrupole for the HiLumi Upgrade of the LHC

Progress in the Development of the Nb₃Sn MQXFB Quadrupole for the HiLumi Upgrade of the LHC