Author: Hong, J.S.
Paper Title Page
TUMPA03 The Implementation of KSTAR Fast Interlock System using C-RIO 337
 
  • M.K. Kim, J.S. Hong, T.H. Tak
    NFRI, Daejeon, Republic of Korea
 
  Tokamak using superconducting magnets is becoming more and more important as long pulse operation and the ability to confine high temperature and density plasma to the interlock system to protect the device. KSTAR achieved H-mode operation for 70 seconds in 2016. In this case, it is necessary to have precise and fast operation protection device to protect Plasma Facing Component from high energy and long pulse plasma. The higher the energy of the plasma, the faster the protection device is needed, and the accurate protection logic must be realized through the high-speed operation using signals from various devices. To meet these requirements, KSTAR implemented the Fast Interlock System using Compact RIO. Implementation of protection logic is performed in FPGA, so it can process fast and various input and output. The EPICS IOC performs communication with peripheral devices, CRIO control, and DAQ. The hard-wired signal for high-speed operation from peripheral devices is directly connected to the CRIO. In this paper, we describe the detailed implementation of the FIS and the results of the fast interlock operation in the actual KSTAR operation, as well as future plans.  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUMPA03  
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TUPHA040 Development of Real-Time Data Publish and Subscribe System Based on Fast RTPS for Image Data Transmission 473
 
  • G.I. Kwon, J.S. Hong, T.G. Lee, W.R. Lee, J.S. Park, T.H. Tak
    NFRI, Daejeon, Republic of Korea
 
  Funding: This work was supported by the Korean Ministry of Science ICT & Future Planning under the KSTAR project.
In fusion experiment, real-time network is essential to control plasma real-time network used to transfer the diagnostic data from diagnostic device and command data from PCS(Plasma Control System). Among the data, transmitting image data from diagnostic system to other system in real-time is difficult than other type of data. Because, image has larger data size than other type of data. To transmit the images, it need to have high throughput and best-effort property. And To transmit the data in real-time manner, the network need to has low-latency. RTPS(Real Time Publish Subscribe) is reliable and has Quality of Service properties to enable best effort protocol. In this paper, eProsima Fast RTPS was used to implement RTPS based real-time network. Fast RTPS has low latency, high throughput and enable to best-effort and reliable publish and subscribe communication for real-time application via standard Ethernet network. This paper evaluates Fast RTPS about suitability to real-time image data transmission system. To evaluate performance of Fast RTPS base system, Publisher system publish image data and multi subscriber system subscribe image data.
* giilkwon@nfri.re.kr, Control team, National Fusion Research Institute, Daejeon, South Korea
 
poster icon Poster TUPHA040 [8.164 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA040  
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TUPHA080 New Data Acquisition System Implemented Based on MTCA.4 Form Factor for KSTAR Diagnostic System 593
 
  • T.G. Lee, J.S. Hong, G.I. Kwon, W.R. Lee, T.H. Tak
    NFRI, Daejeon, Republic of Korea
 
  In Korea Superconducting Tokamak Advanced Research (KSTAR), various diagnostics systems were operated from the first plasma in 2008. Many diagnostic devices have been installed for measuring the various plasma properties such as plasma current, magnetic current, electron density, electron temperature, impurity, and so on. The DAQ system for measuring the various plasma properties were developed with various form factor digitizer such as VME, CPCI, PXI, VXI. and PCIe. These complicated form factors installed on KSTAR have difficulties with hardware management, software management and performance upgrades. In order to control real-time systems using several diagnostic signals, the real-time control system is required to share the data without delay between the diagnostic measurement system and the real-time control system without branch one signal. Therefore, we developed the Multifunction Control Unit (KMCU) as the standard control system MTCA.4 form-factor and implemented the various diagnostic DAQ system using KMCU V2, that is KMCU-Z30. This paper will present the implementation of KSTAR diagnostic DAQ systems configured with KMCU based on MTCA.4 and their operating results.  
poster icon Poster TUPHA080 [1.779 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA080  
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TUPHA105 Development of Pulse Fault Sequence Analysis Application with KSTAR Data Integration System 663
 
  • T.H. Tak, J.S. Hong, M.K. Kim, G.I. Kwon, T.G. Lee, W.R. Lee
    NFRI, Daejon, Republic of Korea
 
  The Korea Superconducting Tokamak Advanced Research (KSTAR) interlock related systems are configured with various system such as fast interlock, supervisory interlock, plasma control, central control, and heating using various types of hardware, software, and interface platforms. For each system, monitoring and analysis tools are already well-developed. However, for the analysis of system fault behavior, these heterogeneous platforms do not help finding the relation of failure. When the interlock events are latched or pulse is stopped by PCS, events are transmitted to different actuators and it could make another events via various interface. In other words, it could lead another factor of fault causes on different system. Through this application we will figure out sequence of fault factor during the pulse-by-pulse KSTAR operation. The KSTAR Data Integration System (KDIS) is configured with KSTAR event-driven architecture and data processing environment. This application will be developed on the KDIS environment and synchronized with KSTAR event. This paper will present the development of shot fault sequence analysis logic and application with KDIS.  
poster icon Poster TUPHA105 [1.156 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA105  
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TUPHA164 Evaluation of Model Based Real Time Feedback Control System on Plasma Density 794
 
  • W.R. Lee, J.S. Hong, G.I. Kwon, T.G. Lee, T.H. Tak
    NFRI, Daejeon, Republic of Korea
 
  The KSTAR plasma control system has very powerful monolithic software architecture that has dedicated centralized system architecture. However, due to increasing of real time functionality on distributed local control system, we need a flexible high-performance software framework. A new real time core engine program inherited design philosophy from the Very Large Telescope (VLT) control software. A new Tool for Advanced Control (TAC) engine was based on C++ standard run on Linux. It is a multithreaded core engine program for execution of real time application. The elemental building blocks are chained together to form a control application.
"Design and implementation of a standard framework for KSTAR control system", FED, Volumes 89, 2015
"Designing a common real-time controller for VLT applications", Proc. of SPIE Vol. 5496
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA164  
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