Quench simulation results for a 12-T twin-aperture dipole magnet

Cheng, Da; Salmi, Tiina; Xu, Qingjin; Peng, Quanling; Wang, Yingzhe; Kong, Ershuai; Zhang, Kai

doi:10.1016/j.cryogenics.2018.03.005

Cited by 6 publications

(2 citation statements)

References 11 publications

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“…LPF1 was first fabricated to explore and address the manufacturing technology together with the performance characteristics of the high field dipole magnet with racetrack coils. The design of LPF1, described in detail in [11][12][13], was characterized by six double-pancake racetrack coils which were contained in a shell-based support structure using an external aluminum shell and pre-tensioned with bladders and keys [28]. Additionally, in the axial direction, two end plates and four aluminum tension rods were adopted for preloading.…”

Section: Fabrication Of Lpf1 and Lpf1-smentioning

confidence: 99%

“…To accomplish this target, a three-step R&D process has been proposed at IHEP [4][5][6][7][8][9]. For the first step, three subscale dipole magnets have already been designed, fabricated and tested with Nb 3 Sn and NbTi superconductors to investigate the fabrication process and characteristics of the common-coil dipole, and also to realize the 12 T magnetic field [10][11][12][13][14]. As an intermediate step, a 15-16 T dipole magnet could be fabricated with a combined configuration of Nb 3 Sn and HTS (high temperature superconducting) coils to test the stress management and quench protection methods of HTS coils.…”

Section: Introductionmentioning

confidence: 99%

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Development of superconducting model dipole magnets beyond 12 T with a combined common-coil configuration

Wang

Shi

et al. 2023

Supercond. Sci. Technol.

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The superconducting magnet group at IHEP (the Institute of High Energy Physics, Chinese Academy of Sciences, China) has been engaging in the R&D of high field accelerator magnets since 2014 for the pre-study of the next-generation high energy particle accelerators like CEPC-SPPC (Circular Electron Positron Collider-Super Proton Proton Collider), FCC (Future Circular Collider) and etc. A superconducting model dipole magnet named LPF1 was firstly fabricated with NbTi and Nb3Sn combined common-coil configuration in 2017 and tested in 2018, a main field of 10.23 T was reached within two 10-mm apertures. The magnet was reassembled with higher pre-stress in 2019 to investigate the influence of pre-stress loading level on the performance of common-coil dipole magnets. The main field of this upgraded magnet named LPF1-S was increased to 10.71 T within two 12-mm apertures. By improving the key process technologies in Rutherford cable fabrication, coil winding, Nb3Sn & NbTi splices soldering and coil impregnation, the recently fabricated model dipole magnet named LPF1-U got a 12.47-T main field in two 14-mm apertures in 2021. To fully take advantage of Nb3Sn and NbTi superconductors in different field regions, LPF1-U was still designed and developed with a combined coil configuration with Nb3Sn for the inner two coils and NbTi for the outer four coils. Besides, graded coil topology and different coil LSS (length of straight section) settings were adopted in the optimization of LPF1-U layouts. Bladder and key technology was used for the support structure and fiber optic sensors based on the FBG (Fiber Bragg Grating) were utilized to monitor the stress distribution and variation in the structures and coils through the whole process from magnet assembly to cool-down and excitation. During the performance test, a relatively large number of trainings were carried out and LPF1-U became more stable after thermal cycle. A peak field of 12.7 T in coils (12.47 T main field in apertures) corresponds to the operating current of 6865 A and the load line ratio of 90 % was finally attained. It is worth mentioning that LPF1-U is the first hybrid - Nb3Sn, NbTi- common coil dipole magnet which has achieved a main field of more than 12 T in two apertures. The design, fabrication and performance analysis of LPF series dipole magnets are presented in this paper.

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Section: Fabrication Of Lpf1 and Lpf1-smentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of superconducting model dipole magnets beyond 12 T with a combined common-coil configuration

Wang

Shi

et al. 2023

Supercond. Sci. Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

Mechanical Design, Assembly, and Test of LPF1: A 10.2 T Nb₃Sn Common-Coil Dipole Magnet With Graded Coil Configuration

Zhang

Wang

Cheng

et al. 2019

IEEE Trans. Appl. Supercond.

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Electromagnetic Design, Fabrication, and Test of LPF1: A 10.2-T Common-Coil Dipole Magnet With Graded Coil Configuration

Wang

Cheng

Zhang

et al. 2019

IEEE Trans. Appl. Supercond.

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Quench simulation results for a 12-T twin-aperture dipole magnet

Cited by 6 publications

References 11 publications

Development of superconducting model dipole magnets beyond 12 T with a combined common-coil configuration

Development of superconducting model dipole magnets beyond 12 T with a combined common-coil configuration

Mechanical Design, Assembly, and Test of LPF1: A 10.2 T Nb₃Sn Common-Coil Dipole Magnet With Graded Coil Configuration

Electromagnetic Design, Fabrication, and Test of LPF1: A 10.2-T Common-Coil Dipole Magnet With Graded Coil Configuration

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Quench simulation results for a 12-T twin-aperture dipole magnet

Cited by 6 publications

References 11 publications

Development of superconducting model dipole magnets beyond 12 T with a combined common-coil configuration

Development of superconducting model dipole magnets beyond 12 T with a combined common-coil configuration

Mechanical Design, Assembly, and Test of LPF1: A 10.2 T Nb3Sn Common-Coil Dipole Magnet With Graded Coil Configuration

Electromagnetic Design, Fabrication, and Test of LPF1: A 10.2-T Common-Coil Dipole Magnet With Graded Coil Configuration

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Mechanical Design, Assembly, and Test of LPF1: A 10.2 T Nb₃Sn Common-Coil Dipole Magnet With Graded Coil Configuration