20-T Dipole Magnet With Common-Coil Configuration: Main Characteristics and Challenges

Xu, Qingjin; Zhao, Ling; Zhao, Wenjin; Zhu, Zi; Chen, Fusan; Wen, Kejun; Li, Qing; Peng, Quanling; Zhang, Kai; Wang, Chengtao; Hu, Yinan; Hou, Zhilong; Ning, Feipeng; Wang, Meifen; Yao, Wenjing; Zhang, Guoqing

doi:10.1109/tasc.2015.2511927

Cited by 24 publications

(12 citation statements)

References 10 publications

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“…Figure 5 shows the maximum total intensity at the quench limit as a function of the local cleaning inefficiency, assuming that minimum beam lifetimes of 0.1 hour at the injection energy and 0.2 hour at the top energy must be satisfied just like at the LHC. In the baseline design of SPPC, the SC magnets in the arcs use the full iron-based HTS technology [39], and the field strength of the main dipoles is 12 T. However, as the magnet technology is still being developed [40], the quench limits is not yet available. In this article, the quench limit value Rq for the SPPC arc magnets is estimated by the following formula [41] 3 8 2…”

Section: Simulation Results Of the Sppc Collimation System A Collimat...mentioning

confidence: 99%

Collimation method studies for next-generation hadron colliders

Yang

Zou

Tang

2019

Phys. Rev. Accel. Beams

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In order to handle extremely-high stored energy in future proton-proton colliders, an extremely high-efficiency collimation system is required for safe operation. At LHC, the major limiting locations in terms of particle losses on superconducting (SC) magnets are the dispersion suppressors (DS) downstream of the transverse collimation insertion. These losses are due to the protons experiencing single diffractive interactions in the primary collimators. How to solve this problem is very important for future proton-proton colliders, such as the FCC-hh and SPPC. In this article, a novel method is proposed, which arranges both the transverse and momentum collimation in the same long straight section. In this way, the momentum collimation system can clean those particles related to the single diffractive effect. The effectiveness of the method has been confirmed by multi-particle simulations. In addition, SC quadrupoles with special designs such as enlarged aperture and good shielding are adopted to enhance the phase advance in the transverse collimation section, so that tertiary collimators can be arranged to clean off the tertiary halo which emerges from the secondary collimators and improve the collimation efficiency. With one more collimation stage in the transverse collimation, the beam losses in both the momentum collimation section and the experimental regions can be largely reduced. Multi-particle simulation results with the MERLIN code confirm the effectiveness of the collimation method. At last, we provide a protection scheme of the SC magnets in the collimation section. The FLUKA simulations show that by adding some special protective collimators in front of the magnets, the maximum power deposition in the SC coils is reduced dramatically, which is proven to be valid for protecting the SC magnets from quenching.

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Section: Simulation Results Of the Sppc Collimation System A Collimat...mentioning

confidence: 99%

Collimation method studies for next-generation hadron colliders

Yang

Zou

Tang

2019

Phys. Rev. Accel. Beams

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“…Therefore, an economically viable option of 20 T dipole magnets has to involve a "hybrid" approach, where HTS materials are used in the high field part of the coil with so-called "insert coils", and Nb 3 Sn and Nb-Ti superconductors are adopted in the lower field region with so-called "outsert coils". Preliminary design studies of 20 T hybrid dipole magnets were carried out in 2005 [52] and in 2014-2016 [53][54][55], whereas a full HTS option was analyzed in 2018 [56]. In 2015, a 20 T hybrid block-type design was presented by G. Sabbi, et al in [57].…”

Section: Considerations For Accelerator Magnets Beyond 20 Tmentioning

confidence: 99%

A Strategic Approach to Advance Magnet Technology for Next Generation Colliders

Ambrosio¹,

Amm²,

Anerella³

et al. 2022

Preprint

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“…Subsequent magnets were single-aperture quadrupoles or dipoles, whereas the common-coil design is for two-in-one dipoles. With the growing interest of the high-energy physics community in proton colliders with center-of-mass energies in the order of 100 TeV in a limited tunnel size (due to geographic or other reasons), however, interest in a design option that can produce a lower cost high field magnet has returned (Qingjin Xu et al 2016;Toral et al 2017).…”

Section: Accelerator-quality Common-coil Dipolementioning

confidence: 99%

Common-Coil Nb3Sn Dipole Program at BNL

Gupta

2019

Nb3Sn Accelerator Magnets

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This chapter summarizes the common-coil dipole research and development program at the Brookhaven National Laboratory (BNL). The program goals included: (a) the development of accelerator-quality dipoles based on the commoncoil design concept; (b) the demonstration of "react-and-wind" technology for high field collider dipole magnets; and (c) the development and demonstration of a novel background field test facility with a large open space.

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20-T Dipole Magnet With Common-Coil Configuration: Main Characteristics and Challenges

Cited by 24 publications

References 10 publications

Collimation method studies for next-generation hadron colliders

Collimation method studies for next-generation hadron colliders

A Strategic Approach to Advance Magnet Technology for Next Generation Colliders

Common-Coil Nb3Sn Dipole Program at BNL

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