Design and Development of a Compact 1 GHz (23.5 T)-Class NMR Magnet With Bi-2223 Inner Coils

Piao, Rui‐Qi; Miyoshi, Yasuyuki; Yoshikawa, Masayuki; Saito, Kazuyoshi; Hamada, Mamoru; Matsumoto, Shinji; Suematsu, H.; Mochida, H.; Takao, T.; Suetomi, Yu; Takahashi, Masato; Maeda, Hideaki; Yanagisawa, Yoshinori

doi:10.1109/tasc.2019.2899670

Cited by 11 publications

(4 citation statements)

References 28 publications

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“…For RIKEN magnet, they also used reinforced Bi-2223 tape to wind the HTS insert magnet [29]. Their current density is 236.1 MA/m2 on the conductor with cross section 4 mm×0.26 mm, but the engineering current density is lower.…”

Section: Electromagnetic Stressmentioning

confidence: 99%

“…The selected HTS tape is a HT-NX tape manufactured by the company Sumitomo Electric, and the reported allowable stress (77 K) is 400 MPa with nickel alloy reinforcement. For the RIKEN magnet, reinforced Bi-2223 tape was also used to wind the HTS insert magnet [29]. The current density is 236.1 MA m −2 on the conductor with cross section 4 mm × 0.26 mm, but the engineering current density is lower.…”

Section: Electromagnetic Stressmentioning

confidence: 99%

“…In this work, a 27 T NMR superconducting magnet system was designed together with superconducting shim coils. LTS wires of NbTi and Nb 3 Sn were used for the background magnet design, provided by Oxford Instruments [17,[23][24][25], the HTS insert magnet adopted Bi-2223 tape [26][27][28][29] and Nb 3 Sn was applied in the zonal shim coils located outside the background magnet and the tesseral shim coils located between the background and insert magnets utilized NbTi. The electromagnetic and mechanical performances for the insert magnet and shim coils were presented.…”

Section: Introductionmentioning

confidence: 99%

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Insert magnet and shim coils design for a 27 T nuclear magnetic resonance spectrometer with hybrid high and low temperature superconductors

Wang¹,

Wang²,

Liu³

et al. 2020

Supercond. Sci. Technol.

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Extremely-high field nuclear magnetic resonance (NMR) spectrometer has the potential to significantly augment the resolution and sensitivity of the atomic resonance spectrum, which will largely boost the development of a range of scientific areas. The success of the extremely-high field NMR spectrometer depends on the development of superconducting magnet system to a great extent. A high-temperature superconducting (HTS) insert magnet and low-temperature superconducting (LTS) shim coils design scheme for a 27 T NMR spectrometer was proposed in this work. A LTS background magnet was used to generate a 15 T magnetic field in the central area and the designed HTS insert magnet was to contribute the remaining 12 T magnetic field. The HTS insert magnet adopted notch double-pancake (DP) optimization to improve the rough magnetic field distribution in the central area to a highly-homogeneous level, and shim compensation schemes was proposed for the hybrid magnet to eliminate the inhomogeneous magnetic field components in the practical fabrication. The HTS insert magnet design had a current margin 45.64% in terms of the perpendicular magnetic field intensity and the maximum hoop stress was reduced to 260 MPa with binding. There were totally 8 shim coils, including 2 Nb3Sn zonal coils located between the insert magnet and the background magnet and 6 NbTi tesseral coils placed outside the background magnet. The magnet system will be fabricated in the near future.

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Section: Electromagnetic Stressmentioning

confidence: 99%

Section: Electromagnetic Stressmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Insert magnet and shim coils design for a 27 T nuclear magnetic resonance spectrometer with hybrid high and low temperature superconductors

Wang¹,

Wang²,

Liu³

et al. 2020

Supercond. Sci. Technol.

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“…(Bi, Pb) 2 Sr 2 Ca 2 Cu 3 O 10+y (Bi-2223) high temperature superconductor (HTSC) has a great potential for a variety of applications such as power transmission cables [1,2], superconducting magnets [3,4], motors [5,6], generators [7,8], transformers [9,10], current limiters [11,12] and current leads [13,14]. This is because the first generation of the Bi-2223 superconducting tapes can carry a sufficiently high transport critical current density, J c , and can be mass produced with a rather low price compared with the second generation of the superconducting tapes [15].…”

Section: Introductionmentioning

confidence: 99%

Optimization for preparing Bi_1.68Pb_0.32Sr_1.75Ca_1.85Cu_2.85O_10+y powders by wet ball milling

Chen

Shao²,

Zhao³

et al. 2022

Mater. Res. Express

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Superconducting Bi1.68Pb0.32Sr1.75Ca1.85Cu2.85O10+y (Bi-2223) powders were prepared by a conventional solid-state reaction using hand grinding and wet ball milling. The effects of the ball milling and sintering times on the phase evolution were examined by X-ray diffraction and magnetic susceptibility measurements. Single-phase Bi-2223 powders with a superconducting transition temperature of about 108 K were optimally prepared by wet ball milling for 20 h and sintering at 867 °C for 80 h. Finding these optimal preparation conditions were crucial for mass producing high-quality single-phase Bi-2223 precursor powders with a much lower cost of energy. Furthermore, we found that ball milling led to thinner grains than hand grinding.

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Review of the Research Status of Practical Superconducting Materials and Their Current Carrying Performance

Zhang 张,

Liu 刘

et al. 2024

Chinese Phys. Lett.

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Superconducting materials hold great potential in high field magnetic applications compared to traditional conductive materials. At present, practical superconducting materials include low-temperature superconductors such as NbTi and Nb3Sn, hightemperature superconductors such as Bi-2212, Bi-2223, YBCO, iron-based superconductors and MgB2. The development of low-temperature superconducting wires started earlier and has now entered the stage of industrialized production, showing obvious advantages in mechanical properties and cost under low temperature and middle-low magnetic field. However, due to the insufficient intrinsic superconducting performance, low-temperature superconductors are unable to exhibit excellent performance at high temperature or high fields. Further improvement of supercurrent carrying performance mainly depends on the enhancement of pinning ability. Hightemperature superconductors have greater advantages in high temperature and high field, but many of them are still in the stage of further performance improvement. Many high-temperature superconductors are limited by the deficiency in their polycrystalline structure, and further optimization of intergranular connectivity is required. In addition, it is also necessary to further enhance their pinning ability. The numerous successful application instances of high-temperature superconducting wires and tapes also prove their tremendous potential in electric power applications.

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Design and Development of a Compact 1 GHz (23.5 T)-Class NMR Magnet With Bi-2223 Inner Coils

Cited by 11 publications

References 28 publications

Insert magnet and shim coils design for a 27 T nuclear magnetic resonance spectrometer with hybrid high and low temperature superconductors

Insert magnet and shim coils design for a 27 T nuclear magnetic resonance spectrometer with hybrid high and low temperature superconductors

Optimization for preparing Bi_1.68Pb_0.32Sr_1.75Ca_1.85Cu_2.85O_10+y powders by wet ball milling

Review of the Research Status of Practical Superconducting Materials and Their Current Carrying Performance

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Design and Development of a Compact 1 GHz (23.5 T)-Class NMR Magnet With Bi-2223 Inner Coils

Cited by 11 publications

References 28 publications

Insert magnet and shim coils design for a 27 T nuclear magnetic resonance spectrometer with hybrid high and low temperature superconductors

Insert magnet and shim coils design for a 27 T nuclear magnetic resonance spectrometer with hybrid high and low temperature superconductors

Optimization for preparing Bi1.68Pb0.32Sr1.75Ca1.85Cu2.85O10+y powders by wet ball milling

Review of the Research Status of Practical Superconducting Materials and Their Current Carrying Performance

Contact Info

Product

Resources

About

Optimization for preparing Bi_1.68Pb_0.32Sr_1.75Ca_1.85Cu_2.85O_10+y powders by wet ball milling