Plasma control system for “Day-One” operation of KSTAR tokamak

Hahn, S.H.; Walker, M.L.; Kim, Kukhee; Ahn, Hyun-Sik; Penaflor, B.G.; Piglowski, D.A.; Johnson, Robert D.; Choi, Jaehoon; Dong-keun, Lee; Kim, Jaewook; Yoon, S.W.; Seo, Seong-Heon; Kim, H.T.; Kim, K.P.; Lee, T.G.; Park, M.K.; Bak, J. G.; Lee, S.G.; Nam, Y. U.; Eidietis, N. W.; Leuer, J.A.; Hyatt, A.W.; Jackson, G.L.; Mueller, D.; Welander, A.S.; Abla, G.; Humphreys, D.A.; Kim, W.C.; Oh, Y.K.

doi:10.1016/j.fusengdes.2008.12.082

Cited by 43 publications

(11 citation statements)

References 14 publications

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“…Density feedback implementation was done since the first year [3] based on the line-averaged electron density diagnostics [16], but has not been utilized very often because of (1) uncertainties on the measurement in the plasmas with large ELM crashes, and (2) low fuelling efficiency of the outboard gas [17]. Several minor improvements on the density measurement was done, and research seeking for better efficiency introduced additional PID by Supersonic Molecular Beam Injections (SMBI) [18].…”

Section: Progress On Kinetic Controlsmentioning

confidence: 99%

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Progress and plan of KSTAR plasma control system upgrade

Hahn

Kim

Penaflor

et al. 2016

Fusion Engineering and Design

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h i g h l i g h t s• Recent achievements of the KSTAR plasma control system are described.• Requirements and results of the testbed system for the future upgrade of the KSTAR plasma control system are presented.• An overview of the upgrade layout based is given. a b s t r a c t The plasma control system (PCS) has been one of essential systems in annual KSTAR plasma campaigns: starting from a single-process version in 2008, extensive upgrades are done through the previous 7 years in order to achieve major goals of KSTAR performance enhancement. Major implementations are explained in this paper. In consequences of successive upgrades, the present KSTAR PCS is able to achieve ∼48 s of 500 kA plasma pulses with full real-time shaping controls and real-time NB power controls. It has become a huge system capable of dealing with 8 separate categories of algorithms, 26 actuators directly controllable during the shot, and real-time data communication units consisting of +180 analog channels and +600 digital input/outputs through the reflective memory (RFM) network. The next upgrade of the KSTAR PCS is planned in 2015 before the campaign. An overview of the upgrade layout will be given for this paper. The real-time system box is planned to use the CERN MRG-Realtime OS, an ITER-compatible standard operating system. New hardware is developed for faster real-time streaming system for future installations of actuators/diagnostics.

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Section: Progress On Kinetic Controlsmentioning

confidence: 99%

“…Starting from a single-process version in 2008 [3], with adaptation of the General Atomics Plasma Control System software, extensive upgrades are done through the previous 7 successive campaigns in order to achieve annual goals of KSTAR performance enhancement.…”

Section: Introductionmentioning

confidence: 99%

Progress and plan of KSTAR plasma control system upgrade

Hahn

Kim

Penaflor

et al. 2016

Fusion Engineering and Design

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“…KSTAR PCS derived from the DIII-D PCS [4]. It does not have EPICS interface and cannot be accessed during the plasma control period.…”

Section: System Inter-connectionmentioning

confidence: 99%

Conceptual design and implementation of Pulse Automation and Scheduling System for KSTAR

Lee

Park

et al. 2015

Fusion Engineering and Design

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“…Since the prior step continues until any next steps are completed, a kind of massive integration method for very long period was required. Even the plasma control system [5], which was supposed to have very short operating time compared to the overall operation schedule, had structures and procedures for reacting any disturbances on the status of the superconducting systems.…”

Section: Design Of the Shape Control Systemmentioning

confidence: 99%

Design of plasma shape control system for KSTAR tokamak

Hahn

Choi

Jin

et al. 2009

2009 23rd IEEE/NPSS Symposium on Fusion Engineering

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The development of the plasma shape control system of the Korea Superconducting Tokamak and Advanced Research (KSTAR) continues from the first utilization for plasma current/major radii to the full-scale utilizations of the poloidal superconducting magnets and the in-vessel stabilization coils for the highly elongated (κ ∼ 2.0) plasmas planned in 2009/2010. In this paper the shape control of KSTAR is analyzed as a complete integrated form, including the operation design and experiences. In the first plasma campaign held in 2008, the plasma shape control system has been prepared as part of the pulse operation controls for the first daily operation. A time-synchronized shot sequence supervisions and actuator integrations has been done by the full-digital centralization scheme via the EPICS communicating layers and the dedicated fast communication layers. In the end a reliable real-time plasma feedback system have been accomplished for making/sustaining plasma current and major radius. The status of the shape control upgrade proposed for upcoming years is shown as well as the actuator control developments and the newly-introduced in-vessel vertical stabilization control scheme.

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Plasma control system for “Day-One” operation of KSTAR tokamak

Cited by 43 publications

References 14 publications

Progress and plan of KSTAR plasma control system upgrade

Progress and plan of KSTAR plasma control system upgrade

Conceptual design and implementation of Pulse Automation and Scheduling System for KSTAR

Design of plasma shape control system for KSTAR tokamak

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