在一个原型的高温超导双极磁体中提高场均性
Geonyoung Kim1, Jeonghwan Park2, Wonju Jung1
1Department of Electrical and Computer Engineering, Seoul National University, Seoul, Korea.
Scientific reports
|January 7, 2026
概括
高温超导磁铁通过使用电流扫描反转和被动闪来实现更好的场均性. 这些方法提高了磁场稳定性,用于诸如粒子加速器和MRI等应用.
科学领域:
- 超导磁铁技术 超导磁铁技术 超导磁铁技术
- 粒子加速器物理学 物理
- 材料科学 材料科学 材料科学
背景情况:
- 高温超导 (HTS) 磁铁对于MRI,NMR,聚变和粒子加速器至关重要,这些加速器需要更高的磁场.
- 对于同步子来说,需要 Saddle 几何二极磁体,REBCO 作为一个有前途的 HTS 材料.
- 确保磁场的空间均性和时间稳定性对于光束线来说至关重要.
研究的目的:
- 为了证明传导冷却,无绝缘 (NI) REBCO式双极磁体的更好的场均性.
- 评估减轻由于选电流诱导场 (SCIF) 和制造错误引起的磁场不均性的策略.
- 为在紧的,无冷的HTS双极磁体中实现低温超导 (LTS) 类场均性提供实用途径.
主要方法:
- 设计了一种导电冷却,无绝缘 (NI) 的REBCO双极磁铁,具有0.5 T的中心场.
- 评估电流扫描反转 (CSR) 和被动闪光,使用AISI 1008铁晶片来提高磁场均性.
- 利用数值模拟和实验验证,分析每个技术的影响.
主要成果:
- CSR使空间统一性提高了大约0.4×.
- 通过铁的被动闪,提高了4.5×的均性.
- 实现了六极主导波,具有小的斜剩余和时间漂移≤0.38× [公式:参见文本] [公式:参见文本].
结论:
- 无论是CSR还是被动闪,都有效地减轻了REBCO双极磁铁中的磁场不均.
- 与CSR相比,被动闪在现场统一性方面提供了显著更大的改进.
- 该研究提出了一种可行的方法,用于在NI HTS双极磁体中实现LTS类场均性.
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