Results 171 to 180 of about 4,253 (208)

An overview of KSTAR results

Nuclear Fusion, 2013
Since the first H-mode discharges in 2010, the duration of the H-mode state has been extended and a significantly wider operational window of plasma parameters has been attained. Using a second neutral beam (NB) source and improved tuning of equilibrium configuration with real-time plasma control, a stored energy of Wtot???450?kJ has been achieved with
Jong-Gu Kwak, Y.K. Oh, H.L. Yang, K.R. Park, Y.S. Kim, W.C. Kim, J.Y. Kim, S.G. Lee, H.K. Na, M. Kwon, G.S. Lee, H.S. Ahn, J.-W. Ahn, Y.S. Bae, J.G. Bak, E.N. Bang, C.S. Chang, D.H. Chang, Z.Y. Chen, K.W. Cho, M.H. Cho, M. Choi, W. Choe, J.H. Choi, Y. Chu, K.S. Chung, P. Diamond, L. Delpech, H.J. Do, N. Eidietis, A.C. England, R. Ellis, T. Evans, G. Choe, L. Grisham, Y. Gorelov, H.S. Hahn, S.H. Hahn, W.S. Han, T. Hatae, D. Hillis, T. Hoang, J.S. Hong, S.H. Hong, S.R. Hong, J. Hosea, D. Humphreys, Y.S. Hwang, A. Hyatt, K. Ida, Y.K. In, S. Ide, Y.B. Jang, Y.M. Jeon, J.I. Jeong, N.Y. Jeong, S.H. Jeong, J.K. Jin, M. Joung, J. Ju, K. Kawahata, C.H. Kim, Hee-Su Kim, H.S. Kim, H.J. Kim, H.K. Kim, H.T. Kim, J.H. Kim, J. Kim, J.C. Kim, Jong-Su Kim, Jung-Su Kim, J.H. Kim, Kyung-Min Kim, K.J. Kim, K.P. Kim, M.K. Kim, S.T. Kim, S.W. Kim, Y.J. Kim, Y.K. Kim, Y.O. Kim, J.S. Ko, W.H. Ko, Y. Kogi, E. Kolemen, J.D. Kong, S.W. Kwak, J.M. Kwon, O.J. Kwon, D.G. Lee, D.R. Lee, D.S. Lee, H.J. Lee, J. Lee, J.H. Lee, K.D. Lee, K.S. Lee, S.H. Lee, S.I. Lee, S.M. Lee, T.G. Lee, W. Lee, W.L. Lee, D.S. Lim, X. Litaudon, J. Lohr, D. Mueller, K.M. Moon, D.H. Na, Y.S. Na, Y.U. Nam, W. Namkung, K. Narihara, S.T. Oh, D.G. Oh, T. Ono, B.H. Park, D.S. Park, G.Y. Park, H. Park, H.T. Park, J.K. Park, J.S. Park, M.K. Park, S.H. Park, S. Park, Y.M. Park, Y.S. Park, R. Parker, D.R. Rhee, S.A. Sabbagh, K. Sakamoto, S. Shiraiwa, D.C. Seo, S.H. Seo, J.C. Seol, Y.J. Shi, S.H. Son, N.H. Song, T. Suzuki, L. Terzolo, M. Walker, G. Wallace, K. Watanabe, S.J. Wang, H.J. Woo, I.S. Woo, M. Yagi, Y.W. Yu, I. Yamada, Y. Yonekawa, C.M. Yoo, K.I. You, J.W. Yoo, G.S. Yun, M.G. Yu, S.W. Yoon, W. Xiao, S. Zoletnik   +159 more
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Microwave imaging reflectometry for KSTAR

Journal of Instrumentation, 2012
A microwave imaging reflectometry (MIR) system with two probing frequencies is being developed for 2D measurement of electron density fluctuations for KSTAR plasmas. The two-frequency probe beam enables simultaneous measurement of density fluctuations at two cut-off layers.
Lee, W, In ho Hong, June-eok Leem, Kim, M, Yun-Beom Nam, Gunsu Yun, Park, HK, Kim, YG, Kim, KW, Domier, CW, Luhmann, NC   +10 more
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The KSTAR superconducting magnet system

17th IEEE/NPSS Symposium Fusion Engineering (Cat. No.97CH36131), 2002
The Korean Superconducting Tokamak Advanced Research (KSTAR) at the Korea Basic Science Institute in Taejon will be the first Tokamak with an advanced all superconducting magnet system, including toroidal field (TF), poloidal field (PF),and field error correction (FEC) coils.
J.H. Schultz, P. Michel, L.M. Myatt, A. Radovinsky, P.W. Wang, W. Reiersen, T. Brown, K. Kim, S. Baang, H. Choi   +9 more
openaire   +1 more source

Plasma-Surface Interaction Activities in KSTAR

Fusion Science and Technology, 2013
Selected topics of Plasma-Surface Interaction (PSI) activities in KSTAR are briefly introduced. SOL parameter measurements, particle balance and fuel retention, in-vessel dust research, and finally tungsten R & D are discussed. Some quantitative numbers from the initial phase of the operation are given for comparison with that of other machines.
Hong, S.-H., Yu, Y., Kim, K.-P., Bak, J. G., Park, H.-J., Oh, Y.-S., Chung, J., Nam, Y.-U., Bang, E.-N., Kim, K.-R., Litnovsky, A., Hellwig, M., Matveev, D., Komm, M., van den Berg, M., Kim, W.-C., Kim, H.-K., Rho, T.-H., Chu, Y., Oh, Y.-K, Yang, H.-L., Park, K.-R., Chung, K.-S.   +22 more
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Overview of KSTAR ICRF Experiments

AIP Conference Proceedings, 2011
At magnetic field of 2 T, 30 MHz, 500 kW of RF power was injected for the central ion and electron heating for D(H) plasmas of KSTAR tokamak. Clear evidence of plasma temperature and stored energy elevation were observed with less impurity generation compared to the previous campaign.
S. J. Wang, S. H. Kim, S. K. Kim, C. Y. An, J. G. Kwak, Cynthia K. Phillips, James R. Wilson   +6 more
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Electron cyclotron emission diagnostics on KSTAR tokamak

Review of Scientific Instruments, 2010
A new electron cyclotron emission (ECE) diagnostics system was installed for the Second Korea Superconducting Tokamak Advanced Research (KSTAR) campaign. The new ECE system consists of an ECE collecting optics system, an overmode circular corrugated waveguide system, and 48 channel heterodyne radiometer with the frequency range of 110–162 GHz.
S H, Jeong, K D, Lee, Y, Kogi, K, Kawahata, Y, Nagayama, A, Mase, M, Kwon   +6 more
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Current Status of the KSTAR Engineering

Plasma Science and Technology, 2004
As there is substantial progress in the KSTAR tokamak engineering, all the major structures and sub-systems are under fabrication and in procurement phase. The vacuum vessel, port, cryostat cylinder, lid, and bellows are being rigorously fabricated in the factory.
J S Bak, K Kim, C H Choi, Y K Oh, B C Kim, N I Her, H L Yang, G S Lee, the KSTAR Team   +8 more
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Magnetics control simulations for KSTAR plasmas

Fusion Engineering and Design, 2002
Abstract Simulation studies on magnetics control for the proposed Korea Superconducting Tokamak Advanced Research (KSTAR) plasmas are presented. Here, the magnetics control includes the fast time scale (∼10 ms) plasma position control, the slow time scale (∼1 s) plasma shape and current control, and the control of resistive wall modes (RWM).
Hogun Jhang, Jin-Yong Kim
openaire   +1 more source

Seismic analysis of the KSTAR tokamak

Proceedings of the 19th IEEE/IPSS Symposium on Fusion Engineering. 19th SOFE (Cat. No.02CH37231), 2003
The objectives of this analysis are to investigate the structural integrity of the KSTAR (Korea Superconducting Tokamak Advanced Research) device for the design earthquake and to enhance its aseismic performance. Three-dimensional finite element beam-shell models of the vacuum vessel, cryostat, and pumping ducts were developed and spectrum analyses ...
H.J. Ahn, Y.W. Lee, Y.C. Kim, J.S. Bak, G.S. Lee   +4 more
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Cryogenic system for KSTAR Tokamak

AIP Conference Proceedings, 2002
The Korea Superconducting Tokamak Advanced Research (KSTAR) Project has been in progress since 1996. Major parameters of the KSTAR tokamak are: major radius 1.8 m, minor radius 0.5 m, toroidal field 3.5 Tesla. The KSTAR device has a fully CICC type superconducting coil system.
openaire   +1 more source