Magnetic diagnostics for the first plasma operation in Korea Superconducting Tokamak Advanced Research

Lee, S. G.; Bak, J. G.; Ka, E. M.; Kim, J. H.; Hahn, S.H.

doi:10.1063/1.2953587

Cited by 45 publications

(21 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Two kinds of plasma diagnostics were used for the first plasma control: 82 channels of magnetic diagnostics [11] and a single chan- nel of the line-integrated electron density from millimeter-wave interferometer [12]. Differential analog cables were used to bring all raw voltage signals into the 96-channels D-TACQ ACQ196 [13] digitizer attached to the real-time CPU through a 66 MHz PXI-to-PCI link, providing 20 kS/s per channel.…”

Section: Data Acquisitionmentioning

confidence: 99%

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

Hahn

Walker

Kim

et al. 2009

Fusion Engineering and Design

View full text Add to dashboard Cite

Section: Data Acquisitionmentioning

confidence: 99%

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

Hahn

Walker

Kim

et al. 2009

Fusion Engineering and Design

View full text Add to dashboard Cite

“…Magnetic diagnostics is a fundamental diagnostics that provides key information about plasma displacement and condition of the tokamak devices [1][2][3]. The sensors of the HL-2A magnetic diagnostic system, such as inductive loops and Rogowski coils, acquire induced voltage signals when integrators are required to convert the voltages to magnetic fluxes or plasma currents [4].…”

Section: Introductionmentioning

confidence: 99%

A multi-channel real-time digital integrator for magnetic diagnostics in HL-2A tokamak

et al. 2016

View full text Add to dashboard Cite

A novel full-digital integrator has been developed for the magnetic diagnostics in HL-2A. Based on the pipeline processing of the field-programmable gate array and high-speed PCI extensions for instrumentation platform, the digital integrator has realized octal-channel 10-kHz real-time integration and data transmission. In order to reduce the integration drift, a 24-bit analog-todigital converter and simple analog processing circuits are applied for high-precision sampling, while certain correction algorithms are used to minimize the drift. With simple and highly integrated circuits and high-performance digital processor, the digital integrator is of high stability and functional expansibility which greatly simplifies the operation procedure. The digital integrator has been tested in the plasma discharge experiments, and the experimental results have confirmed that the drift performance and accuracy of the digital integrator could fully meet the requirements of HL-2A.

show abstract

“…The diagnostic systems played an important role to achieve successful first plasma operation for the KSTAR tokamak [1]. The basic diagnostic systems for the first plasma gave the plasma current, loop voltage, eddy current, line integrated density, impurity signal including Ha, and electron temperature which are essential for the plasma generation, control, and physics understanding [2], [3]. The diagnostics including the x-ray crystal spectroscopy, reflectometer, resistive bolometer array, and so on are scheduled to be added for the next KSTAR experimental campaign [4].…”

Section: Introductionmentioning

confidence: 99%

KSTAR Charge Exchange Spectroscopy system

2009

2009 23rd IEEE/NPSS Symposium on Fusion Engineering

View full text Add to dashboard Cite

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, in conjunction with the neutral heating beam in KSTAR. The visible light from the plasma would be collected via a collection optics assembly and imaged onto quartz fibers. We show the progress of the KSTAR CES diagnostic including the collection assembly, lens design, and cassette system and compare the KSTAR CES system design with the designs of other international tokamaks. The KSTAR CES system utilizes a 1.33 m CzernyTurner spectrometer with variable wavelength. The detector is a thinned back-illuminated Charge Coupled Device (CCD) that has high quantum efficiency and a high readout speed. The spectrometer and CCD detector which will be used in the KSTAR CES system have been tested and several visible lines have been measured in a helium discharge.

show abstract

Magnetic diagnostics for the first plasma operation in Korea Superconducting Tokamak Advanced Research

Cited by 45 publications

References 6 publications

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

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

A multi-channel real-time digital integrator for magnetic diagnostics in HL-2A tokamak

KSTAR Charge Exchange Spectroscopy system

Contact Info

Product

Resources

About