The Transactions of the Korean Institute of Electrical Engineers C (대한전기학회논문지:전기물성ㆍ응용부문C)

The Korean Institute of Electrical Engineers (대한전기학회)
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Development of a 3.6 MW, $4\;{\mu}s$, 200 pps Pulse Modulator for a High Power Magnetron

고출력 마그네트론 구동용 3.6 MW, $4\;{\mu}s$, 200 pps 펄스 모듈레이터 개발

  • 장성덕 (포항공과대학 가속기연구소) ;
  • 권세진 (포항공과대학 가속기연구소) ;
  • 배영순 (포항공과대학 가속기연구소) ;
  • 오종석 (포항공과대학 가속기연구소) ;
  • 조무현 (포항공대 물리학과) ;
  • 남궁원 (포항공대 대학원) ;
  • 손윤규 (포항공과대학 가속기연구소)
  • Published : 2005.03.01
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Abstract

The Korean Superconducting Tokamak Advanced Research (KSTAR) tokamak device is being constructed to perform long-pulse, high-beta, advanced tokamak fusion physics experiments. The long-pulse operation requires the non-inductive current drive system such as the Lower-Hybrid Current Drive (LHCD) system. The LHCD system drives the non-inductive plasma current by means of C-band RF with 2-MW CW power and 5-GHz frequency. For the LHCD test experiments, an RF test system is developed. It is composed of a 5-GHz, 1.5-MW pulsed magnetron and a compact pulse modulator with $4\;{\mu}s$ of pulse width. The pulse modulator provides the maximum output voltage of 45 kV and the maximum current of 90 A. It is composed of 7 stages of Pulse Forming Network (PFN), a thyratron tube (E2V, CX1191D), and a pulse transformer with 1:4 step-up ratio. In this paper, the detailed design and the performance test of the pulse modulator are presented.

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References

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