Fast Measurement of Ion Temperature Using Filter Charge Exchange Recombination Spectroscopy System Towards Real-Time Plasma Control in JT-60U

2007 ◽  
Vol 51 (2T) ◽  
pp. 301-303 ◽  
Author(s):  
M. Yoshida ◽  
S. Kobayashi ◽  
H. Takenaga ◽  
S. Sakata ◽  
Y. Kamada ◽  
...  
Keyword(s):  
Real Time ◽  
Charge Exchange ◽  
Ion Temperature ◽  
Fast Measurement ◽  
Spectroscopy System ◽  
Plasma Control

Open source real-time operating systems for plasma control at FTU

2004 ◽  
Vol 51 (3) ◽  
pp. 476-481 ◽  
Author(s):  
C. Centioli ◽  
F. Iannone ◽  
G. Mazza ◽  
M. Panella ◽  
L. Pangione ◽  
...  
Keyword(s):  
Open Source ◽  
Real Time ◽  
Operating Systems ◽  
Plasma Control

Optimization of 3D controlled ELM-free state with recovered global confinement for KSTAR with n=1 resonant magnetic field perturbation

2021 ◽  
Author(s):  
SangKyeun Kim ◽  
Ricardo Shousha ◽  
Sang-Hee Hahn ◽  
Andrew Oakleigh Nelson ◽  
Josiah Wai ◽  
...  
Keyword(s):  
Real Time ◽  
Free State ◽  
Fusion Reactors ◽  
Ion Temperature ◽  
Real Time Control ◽  
Time Control ◽  
Transport Response ◽  
Magnetic Perturbations ◽  
Edge Localized Modes ◽  
Viable Approach

Abstract Mitigation of deleterious heat flux from edge-localized modes (ELMs) on fusion reactors is often attempted with 3D perturbations of the confining magnetic fields. However, the established technique of resonant magnetic perturbations (RMPs) also degrades plasma performance, complicating implementation on future fusion reactors. In this paper, we introduce an adaptive real-time control scheme on the KSTAR tokamak as a viable approach to achieve an ELM-free state and simultaneously recover high-confinement (βN~1.91, βp~1.53, and H98~0.9), demonstrating successful handling of a volatile complex system through adaptive measures. We show that, by exploiting a salient hysteresis process to adaptively minimize the RMP strength, stable ELM suppression can be achieved while actively encouraging confinement recovery. This is made possible by a self-organized transport response in the plasma edge which reinforces the confinement improvement through a widening of the ion temperature pedestal and promotes control stability, in contrast to the deteriorating effect on performance observed in standard RMP experiments. These results establish the real-time approach as an up-and-coming solution towards an optimized ELM-free state, which is an important step for the operation of ITER and reactor-grade tokamak plasmas.

Enhanced core charge exchange recombination spectroscopy system on Joint European Torus

2006 ◽  
Vol 77 (10) ◽  
pp. 10F102 ◽  
Author(s):  
C. R. Negus ◽  
C. Giroud ◽  
A. G. Meigs ◽  
K.-D. Zastrow ◽  
D. L. Hillis ◽  
...  
Keyword(s):  
Charge Exchange ◽  
Spectroscopy System

Adapting DCS real time framework for WEST plasma control

2018 ◽  
Vol 129 ◽  
pp. 24-28 ◽  
Author(s):  
J. Colnel ◽  
N. Ravenel ◽  
R. Nouailletas ◽  
G. Caulier ◽  
P. Moreau ◽  
...  
Keyword(s):  
Real Time ◽  
Plasma Control

Fast estimation of ion temperature from EAST charge exchange recombination spectroscopy using neural network

2019 ◽  
Vol 21 (10) ◽  
pp. 105103
Author(s):  
Baoyue CHAI ◽  
Yingying LI ◽  
Ze CHEN ◽  
Wei TAO ◽  
Yixuan ZHOU ◽  
...  
Keyword(s):  
Neural Network ◽  
Charge Exchange ◽  
Ion Temperature ◽  
Fast Estimation
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