Results 181 to 190 of about 4,253 (208)

Neutralizer experiment of KSTAR NBTS system

Vacuum, 2009
A general neutralizer experiment was carried out to establish the operational coil current of the bending magnet, the neutralization efficiency of an ion beam with various parameter (beam energy, gas flow rate). Suggested operational coil current which was already studied for the bending magnet, was confirmed through a thermocouple installed at the ...
Tae-Seong Kim, Sang-Ryul in, Doo-Hee Chang, Dae-Sik Chang, Beon-Yeol Kim, Seung-Ho Jeong, Byung-Hoon Oh, Byung-Joo Yoon, Jung-Tae Jin, Kwng-Won Lee, Chang-Suk Seo, Woo-Sub Song, Jinchoon Kim   +12 more
openaire   +1 more source

Stability of Superconducting Magnet for KSTAR

IEEE Transactions on Applied Superconductivity, 2008
The magnet system comprises sixteen toroidal field (TF) coils and fourteen poloidal field (PF) coils for KSTAR (Korea Superconducting Tokamak Advanced Research) Tokamak. All the TF coils and 10 PF coils (PF1 ~ 5 UL) are made of Nb3Sn strands and 4 PF coils (PF6 ~7 UL) are made of NbTi strands.
S.H. Park, W. Chung, H.J. Lee, W.S. Han, K.M. Moon, W.W. Park, J.S. Kim, H. Yonekawa, Y. Chu, K.W. Cho, K.R. Park, W.C. Kim, Y.S. Kim, Y.K. Oh, J.S. Bak   +14 more
openaire   +1 more source

Design of a Doppler reflectometer for KSTAR

Review of Scientific Instruments, 2014
A Doppler reflectometer has been designed to measure the poloidal propagation velocity on the Korea Superconducting Tokamak Advanced Research (KSTAR) tokamak. It has the operating frequency range of V-band (50-75 GHz) and the monostatic antenna configuration with extraordinary mode (X-mode). The single sideband modulation with an intermediate frequency
K D, Lee, Y U, Nam, Seong-Heon, Seo, Y S, Kim   +3 more
openaire   +2 more sources

Helium refrigeration system for the KSTAR

Fusion Engineering and Design, 2006
Abstract The KSTAR, a tokamak with fully superconducting (SC) magnets, is under construction in the National Fusion Research Center (NFRC). For the proper operation of the KSTAR, the superconducting magnets have to be maintained below the critical temperature of the SC components while charged at their corresponding operation current values.
C.H. Choi, H.-S. Chang, D.S. Park, Y.S. Kim, J.S. Bak, G.S. Lee, I.K. Kwon, H.M. Kim, M.C. Cho, H.-S. Kim, E. Fauve, I. Abe, P. Briend, J.-M. Bernhardt, Y. Cardet, P. Dauguet, J. Beauvisage, F. Andrieu, S.-H. Yang, G.M. Gistau Baguer   +19 more
openaire   +1 more source

First neutral beam injection experiments on KSTAR tokamak

Review of Scientific Instruments, 2012
The first neutral beam (NB) injection system of the Korea Superconducting Tokamak Advanced Research (KSTAR) tokamak was partially completed in 2010 with only 1/3 of its full design capability, and NB heating experiments were carried out during the 2010 KSTAR operation campaign.
S H, Jeong, D H, Chang, T S, Kim, S R, In, K W, Lee, J T, Jin, D S, Chang, B H, Oh, Y S, Bae, J S, Kim, H T, Park, K, Watanabe, T, Inoue, M, Kashiwagi, M, Dairaku, H, Tobari, M, Hanada   +16 more
openaire   +2 more sources

KSTAR Charge Exchange Spectroscopy system

2009 23rd IEEE/NPSS Symposium on Fusion Engineering, 2009
The Charge Exchange Spectroscopy (CES) system for the Korea Superconducting Tokamak Advanced Research (KSTAR) device is designed to get profiles of the ion temperature, poloidal and toroidal rotation, and impurity density by using modulated Neutral Beam Injection (NBI). The CES diagnostic will measure the ion temperature of carbon and other impurities,
openaire   +1 more source

Experience from KSTAR ECRH Commissioning

2019 International Vacuum Electronics Conference (IVEC), 2019
This paper presents technical and operational issues that have been experienced during the commissioning of electron cyclotron resonance heating (ECRH) system for Korean Superconducting Tokamak Advanced Research (KSTAR). Most of the technical issues occurred from the commissioning of high-power and long-pulse capable gyrotron which is an most important
openaire   +1 more source

Calibration of the KSTAR ECE system

The 30th International Conference on Plasma Science, 2003. ICOPS 2003. IEEE Conference Record - Abstracts., 2003
Summary form only given, as follows. An electron cyclotron emission (ECE) diagnostic system on KSTAR tokamak was built in last year. The ECE system consists of quasi-optical light collection optics and a heterodyne radiometer. The ECE heterodyne radiometer operates in a single side band and has an eight-channel power divider and filter banks to cover a
S.H. Jeong, C.K. Hwang, I.Y. Kim
openaire   +1 more source

Conceptual design of KSTAR vacuum vessel

17th IEEE/NPSS Symposium Fusion Engineering (Cat. No.97CH36131), 2002
The Korea Superconducting Tokamak Advanced Research (KSTAR) is a steady-state-capable superconducting tokamak. The vacuum vessel (VV) system consists of the toroidal vessel inner and outer shells, radial, horizontal and vertical ports, vessel supports, plasma facing components (PFCs) and their supports. The vessel is a double wall design with inner and
S. Cho, B.J. Yoon, J. Kim, T.G. Brown, F. Dahlgren, S.R. In, H.S. Kim, G.S. Lee, H.K. Park, W. Reiersen   +9 more
openaire   +1 more source

The integrated KSTAR vacuum pumping system

17th IEEE/NPSS Symposium Fusion Engineering (Cat. No.97CH36131), 2002
The Korea Superconducting Tokamak Advanced Research (KTAR) tokamak device is capable of a long pulse (up to 300s) plasma operation utilizing superconducting coils with a cryostat boundary. Its well-designed integrated vacuum pumping system including torus, cryostat, neutral beam injector (NBI), and diagnostics pumping subsystems is essential to achieve
J.Y. Lim, K.H. Chung, J. Kim, Y.H. Shin, S.S. Hong, L. Sevier   +5 more
openaire   +1 more source