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A novel Repetitive Pulsed Magnet (RPM) for Relativistic Backward Wave Oscillator (RBWO) applications was designed through comprehensive analysis of thermal effects in both the RPM and RBWO. By utilizing a bridge circuit configuration and capacitors charged to both positive and negative voltages, the power supply is able to discharge at higher repetition frequency. To meet requirement of RBWO for magnetic field uniformity, an I-shaped magnet structure was implemented. Magnetic field reinforcement layers were incorporated to effectively compensate for field drop-off at the magnet ends. To verify the feasibility of the design, RPM was fabricated and tested. Experimental results demonstrate that the magnet can generate a 30 Hz / 3.5 T repetitive pulsed magnetic field, achieving over 95% uniformity within the central region while maintaining charging power below 30 kW. This validates the effectiveness and feasibility of the proposed approach.

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Development of a 3.5 T/30 Hz Magnet for RBWO

  • 会议论文

  • 发表日期：

    2026年

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  • Haocheng Yang,
  • Jianglin Yang,
  • Guangshuai Zhang,
  • Ping Wu,
  • Lei Ji,
  • Jun Sun,
  • Hongfa Ding,
  • Tao Peng

摘要

A novel Repetitive Pulsed Magnet (RPM) for Relativistic Backward Wave Oscillator (RBWO) applications was designed through comprehensive analysis of thermal effects in both the RPM and RBWO. By utilizing a bridge circuit configuration and capacitors charged to both positive and negative voltages, the power supply is able to discharge at higher repetition frequency. To meet requirement of RBWO for magnetic field uniformity, an I-shaped magnet structure was implemented. Magnetic field reinforcement layers were incorporated to effectively compensate for field drop-off at the magnet ends. To verify the feasibility of the design, RPM was fabricated and tested. Experimental results demonstrate that the magnet can generate a 30 Hz / 3.5 T repetitive pulsed magnetic field, achieving over 95% uniformity within the central region while maintaining charging power below 30 kW. This validates the effectiveness and feasibility of the proposed approach.