Analysis of Temperature Uniformity During Heat Treatment of Nb<sub>3</sub>Sn Coils for the High-Luminosity LHC Superconducting Magnets

Lackner, F.; Bourcey, Nicolas; Ferracin, P.; Jóźwiak, P.; Ohnweiler, T.; Revilak, Philipp; Savary, F.; Triquet, Stephane

doi:10.1109/tasc.2016.2542339

Cited by 10 publications

(2 citation statements)

References 7 publications

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“…The applied metrology process and definition of shimming dimensions for both the short model magnets as well as the long prototype coils are presented in [7] IV. REACTION HEAT TREATMENT The furnace GLO10000 was introduced in [8] and its successful commissioning described in [9]. It was specified to achieve a temperature homogeneity of ±3°C along the 7.15 m long coil during temperature plateaus at 210°C, 400°C and 665°C.…”

Section: Geometrical and Electrical Coil Qualificationmentioning

confidence: 99%

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

Lackner

Scheuerlein

Sahner

et al. 2018

IEEE Trans. Appl. Supercond.

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The High luminosity LHC upgrade target is to increase the integrated luminosity by a factor 10, resulting in an integrated luminosity of 3000 fb-1. One major improvement foreseen is the reduction of the beam size at the collision points. This requires the development of 150 mm single aperture quadrupoles for the interaction regions. These quadrupoles are under development in a joint collaboration between CERN and the US-LHC Accelerator Research Program (LARP). The chosen approach for achieving a nominal quadrupole field gradient of 132.6 T/m is based on the Nb3Sn technology. The coils with a length of 7281 mm will be the longest Nb3Sn coils fabricated so far for accelerator magnets. The production of the long coils was launched in 2016 based on practise coils made from copper. This paper provides a status of the production of the first low grade and full performance coils and describes the production process and applied quality control. Furthermore an outlook for the prototype assembly is provided.

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Section: Geometrical and Electrical Coil Qualificationmentioning

confidence: 99%

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

Lackner

Scheuerlein

Sahner

et al. 2018

IEEE Trans. Appl. Supercond.

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show abstract

“…plateaus up to 650°C during which the homogeneity of temperature in the coil shall be better than ± 3°C. The development of the tooling and the optimization of the process are extensively described in [21]. An example of reaction cycle including the set points for the temperature and the temperature measured with thermocouples of K-type at different locations in the reaction fixture are shown in Fig.…”

Section: B Reaction Processmentioning

confidence: 99%

Progress on the Development of the Nb3Sn 11T Dipole for the High Luminosity Upgrade of LHC

Savary

Bajko

Bordini

et al. 2017

IEEE Trans. Appl. Supercond.

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Abstract-The High Luminosity LHC Project at CERN entered into the production phase in October 2015 after the completion of the design study phase. In the meantime, the development of the 11 T dipole needed for the upgrade of the collimation system of the machine made significant progress with very good performance of the first two-in-one magnet model of 2-m length made at CERN. The 11 T dipole, which is more powerful than the current main dipoles of LHC, can be made shorter with an equivalent integrated field. This will allow creating space for the installation of additional collimators in specific locations of the dispersion suppressor regions. Following tests carried out during heavy ions runs of LHC in the end of 2015, and a more recent review of the project budget, the installation plan for the 11 T dipole was revised. Consequently, one 11 T dipole full assembly containing two 11 T dipoles of 5.5-m length will be installed on either side of interaction point 7. These two units shall be installed during the long shutdown 2 in years 2019-2020. After a brief reminder on the design features of the magnet, this paper describes the current status of the development activities, in particular the short model programme and the construction of the first full scale prototype at CERN. Critical operations like the reaction treatment and the coil impregnation are discussed, the quench performance tests results of the two-in-one model are reviewed and finally, the plan towards the production for the long shut downs 2 is described.  Index Terms-Accelerator magnets, high-luminosity large hadron collider (LHC) project, Nb3Sn 11 T dipole, superconducting magnets.

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Heat transfer analysis during heat treatment of Nb3Sn coils for the CFETR CSMC

Qin

2021

Fusion Engineering and Design

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Analysis of Temperature Uniformity During Heat Treatment of Nb₃Sn Coils for the High-Luminosity LHC Superconducting Magnets

Cited by 10 publications

References 7 publications

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

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

Progress on the Development of the Nb3Sn 11T Dipole for the High Luminosity Upgrade of LHC

Heat transfer analysis during heat treatment of Nb3Sn coils for the CFETR CSMC

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Analysis of Temperature Uniformity During Heat Treatment of Nb3Sn Coils for the High-Luminosity LHC Superconducting Magnets

Cited by 10 publications

References 7 publications

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

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

Progress on the Development of the Nb3Sn 11T Dipole for the High Luminosity Upgrade of LHC

Heat transfer analysis during heat treatment of Nb3Sn coils for the CFETR CSMC

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Product

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Analysis of Temperature Uniformity During Heat Treatment of Nb₃Sn Coils for the High-Luminosity LHC Superconducting Magnets