Progress in the development of heating systems towards long pulse operation for KSTAR

Autor:	D.H. Chang, D.S. Chang, Jong-Gu Kwak, Y.D. Bae, Sun-Whe Kim, C.S. Seo, Bong Guen Hong, M.S. Seo, D.W. Lee, B.J. Yoon, S.J. Wang, S.R. In, K.W. Lee, C.K. Hwang, J.S. Yoon, T.S. Kim, S.H. Jeong, B.H. Oh, K.S. Jung, B.R. Kim, Jong-Su Kim, J.T. Jin
Rok vydání:	2007
Předmět:	Nuclear and High Energy Physics Tokamak Materials science Nuclear engineering Cyclotron Pulse duration Atmospheric-pressure plasma Condensed Matter Physics Neutral beam injection law.invention law KSTAR Atomic physics Beam (structure) Voltage
Zdroj:	Nuclear Fusion. 47:463-468
ISSN:	1741-4326 0029-5515
DOI:	10.1088/0029-5515/47/5/011
Popis:	Construction of the Korea superconducting tokamak advanced research (KSTAR) tokamak is in its final phase. For the long-pulse KSTAR discharges, the ion cyclotron range of frequencies (ICRF) and neutral beam injection (NBI) heating systems are expected to play important roles through a selective heating of ions and electrons, control of the plasma pressure and current profiles, a core fuelling and beam diagnostics for the KSTAR. In addition, the ICRF system is expected to be used for possible discharge cleaning and assisting in the tokamak startup. In this paper, the recent progress in the development of the ICRF and the NBI heating systems is described. The four-strap ICRF antenna has been successfully tested for a voltage up to 41 kV for a pulse length of 300 s (to 46 kV for 20 s) in a test chamber. A prototype KSTAR NBI system has been developed. At present, the system has successfully produced a 1 MW beam power for 200 s and a 3.5 MW output beam power for 4 s.
Databáze:	OpenAIRE
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