Design features of the KSTAR in-vessel control coils

Kim, H.K.; Yang, H.L.; Kim, G.H.; Kim, Jin–Yong; Jhang, Hogun; Bak, J.S.; Lee, G.S.

doi:10.1016/j.fusengdes.2009.01.082

Cited by 52 publications

(37 citation statements)

References 4 publications

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“…Figure 15 shows a typical plasma shape in KSTAR, together with the RMP coil geometry. 39 Because there are three rows of coils located at the low field side of the torus, KSTAR, as well as ITER, has more flexibility in choosing the poloidal spectrum of the applied field, by tuning the relative coil phasing between three rows.…”

Section: -9mentioning

confidence: 99%

Comparative investigation of ELM control based on toroidal modelling of plasma response to RMP fields

Liu

Kirk

et al. 2017

Physics of Plasmas

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Extensive modelling efforts of the plasma response to the resonant magnetic perturbation fields, utilized for controlling the edge localized mode (ELM), help to identify the edge-peeling response as a key factor, which correlates to the observed ELM mitigation in several tokamak devices, including MAST, ASDEX Upgrade, EAST, and HL-2A. The recently observed edge safety factor window for ELM mitigation in HL-2A experiments is explained in terms of the edge-peeling response. The computed plasma response, based on toroidal single fluid resistive plasma model with different assumption of toroidal flows, is found generally larger in ELM suppressed cases as compared to that of the ELM mitigated cases, in ASDEX Upgrade and DIII-D. The plasma shaping, in particular, the plasma triangularity, contributes to the enhanced plasma response. But the shaping does not appear to be the sole factor-other factors such as the (higher) pedestal pressure and/or current can also lead to increased edge-peeling response.

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Section: -9mentioning

confidence: 99%

Comparative investigation of ELM control based on toroidal modelling of plasma response to RMP fields

Liu

Kirk

et al. 2017

Physics of Plasmas

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“…Each half case was fabricated in three parts such as a circular, circular-to-straight transition and straight part. While the cases in the circular and straight part have 3 mm thickness, the transition part has 15 mm thickness of the case to withstand a strong twisting forces caused by a j × B forces from interactions between flowing currents in the segment and combined magnetic fields of toroidal/poloidal direction [6]. The case material had been changed from 2 mm of Inconel 625 to 3 mm of stainless steel 316LN after careful consideration on fabrication process.…”

Section: Fabrication Of Ivcc Segmentsmentioning

confidence: 99%

“…The mechanical tests showed that tensile (wrap direction), compressive (through thickness), and shear (inter-laminar) strength was 786, 303, and 30 MPa, respectively. As a result, the insulation system was proved to be sufficient for mechanical strengths of which values are higher than the expected maximum stresses of the insulation system [6]. In addition to the mechanical test, the DC high potential tests using a prototype segment were carried out to evaluate the dielectric strength under humid condition over 80%.…”

Section: Tests and Commissioningmentioning

confidence: 99%

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Fabrication and installation of KSTAR in-vessel control coils

Kim

Lee

Yang

et al. 2011

Fusion Engineering and Design

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“…More recently, the IVCC is expected to be effectively utilized in suppression of edge localized mode (ELM). This important system adopted a unique concept of segmented coil system to have 16 segments and their support structures [4]. Each segment contains eight water-cooled normal coppers that are partially connected to an adjacent segment in series to form 4 circular coils for position control as shown in Fig.…”

Section: In-vessel Control Coil (Ivcc)mentioning

confidence: 99%