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Development of a 3.6 MW, $4\;{\mu}s$, 200 pps Pulse Modulator for a High Power Magnetron  

Jang Sung-Duck (포항공과대학 가속기연구소)
Kwon Sei-Jin (포항공과대학 가속기연구소)
Bae Young-Soon (포항공과대학 가속기연구소)
Oh Jong-Seok (포항공과대학 가속기연구소)
Cho Moo-Hyun (포항공대 물리학과)
Namkung Won (포항공대 대학원)
Son Yoon-Kyoo (포항공과대학 가속기연구소)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers C / v.54, no.3, 2005 , pp. 120-126 More about this Journal
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.
Keywords
5 GHz LHCD; Pulse Modulator; Magnetron;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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