Scholarlink

<p>The Circular Electron Positron Collider (CEPC) proposed in China is a dual-ring collider with electron and positron beams in the energy range of 45.5–180 GeV. The main dipole in the CEPC collider is a dual-aperture dipole with a shared coil between the two apertures, forming an I-shaped structure that can reduce power consumption by 50%. Because of its long length and low field strength, the development of this dual-aperture magnet faces challenges regarding its mechanical design, field measurement accuracy, and field performance. Numerical simulations were performed to better understand the Earth’s field and the effect of different BH curves on field performance. The field results of the prototype are presented herein, and the field quality satisfies the requirements. The remanent field accounts for 2% of the integral field at 140 Gs, and the hysteresis effect caused an increase in field strength of approximately 0.075% after a standardization cycle of the trim coils. Research on this prototype can provide useful insights for understanding low-field dipole magnets.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Development of a prototype dual-aperture dipole magnet for CEPC collider

  • 期刊论文

  • 发表日期：

    2026年1月30日

查看全文
  • Mei Yang,
  • Fu-San Chen,
  • Jian-Xin Zhou,
  • Ya-Feng Wu,
  • Ying-Shun Zhu,
  • Xian-Jing Sun,
  • Chuang Shen

摘要

The Circular Electron Positron Collider (CEPC) proposed in China is a dual-ring collider with electron and positron beams in the energy range of 45.5–180 GeV. The main dipole in the CEPC collider is a dual-aperture dipole with a shared coil between the two apertures, forming an I-shaped structure that can reduce power consumption by 50%. Because of its long length and low field strength, the development of this dual-aperture magnet faces challenges regarding its mechanical design, field measurement accuracy, and field performance. Numerical simulations were performed to better understand the Earth’s field and the effect of different BH curves on field performance. The field results of the prototype are presented herein, and the field quality satisfies the requirements. The remanent field accounts for 2% of the integral field at 140 Gs, and the hysteresis effect caused an increase in field strength of approximately 0.075% after a standardization cycle of the trim coils. Research on this prototype can provide useful insights for understanding low-field dipole magnets.