KSTAR Conference 2019 February 20Th – 22Nd , 2019

KSTAR Conference 2019 February 20th – 22nd , 2019

Coex, Seoul, Korea

- Program Committee:

Si-Woo Yoon (KSTAR Research Center, NFRI) Woong Chae Kim (KSTAR Research Center, NFRI) Jong-Gu Kwak (KSTAR Research Center, NFRI) Yong Chu (KSTAR Research Center, NFRI) Wooho Chung (ITER Korea, NFRI) Jong-Seok OH (ITER Korea, NFRI) Suk-Ho Hong (Advanced Tech. Res. Center. NFRI) Jae-Min Kwon (Advanced Tech. Res. Center. NFRI) Young-soon Bae (PM Dept. NFRI) Yongkyoon In (Dept. Physics, UNIST) Young-Chul Ghim (Nuclear & Quantum Eng., KAIST) Gunsu S. Yun (Dept. Physics, POSTECH) Yong-Su Na (Nuclear Eng., SNU)

- Conference Secretary:

Seok-In Yoon ([email protected]), NFRI

Technical Program Overview

- Grand Ballroom (Conference Room- North), COEX, SEOUL

Feb. 20th, 2019 (Wednesday)

10th anniversary of KSTAR advanced tokamak experiments 10:00~12:00

12:00~13:40 Lunch Break (SELF HOSTED) 13:40~14:00 Registration & Announcement of KSTAR Conference 2019

14:00~15:30 Plenary Session 1 (90min.) Grand Ballroom 15:30~15:50 Coffee Break

15:50~17:50 Plenary Session 2 (120min.) Grand Ballroom Feb. 21st , 2019 (Thursday)

9:00~10:00 Plenary Session 3 (60min.) Conference R.(N) 201 Coffee Break 10:00~11:00 Poster Session 1 Satellite 1 Conference R.(N) Conference R.(N) Lobby (60min.) 209A Parallel Oral 1A Parallel Oral 1B Parallel Oral 1C 11:00~12:30 Magnetic confinement fundamental Plasma Advanced Scenario 1 (90min.) experiments Physics Conference R.(N) 201 Conference R.(N) 203 Conference R.(N) 205 12:30~14:00 Lunch Break (SELF HOSTED) Parallel Oral 2A Parallel Oral 2B Parallel Oral 2C 14:00~15:30 International 3D Physics Transport & Turbulence (90min.) Collaboration Conference R.(N) 201 Conference R.(N) 203 Conference R.(N) 205 Coffee Break 15:30~16:30 Poster Session 2 Satellite 2 Conference R.(N) Conference R.(N) Lobby (60min.) 209A

16:30~18:00 Parallel Oral 3A Parallel Oral 3B Parallel Oral 3C MHD Fusion Engineering Young Scientists (90min.) Conference R.(N) 201 Conference R.(N) 203 Conference R.(N) 205 Feb. 22nd , 2019 (Friday)

9:00~10:30 Parallel Oral 4A Parallel Oral 4B Parallel Oral 4C Advanced Scenario 2 PWI ITER (90min) Conference R.(N) 201 Conference R.(N) 203 Conference R.(N) 205 Coffee Break

10:50~12:00 Plenary Session 4 & Closing Address (70min.) Conference R.(N) 201

Program of the KSTAR Conference 2019

February 20th, Wednesday

Grand Ballroom

10:00- 12:00 10th anniversary of KSTAR advanced tokamak experiments

13:40- Registration & Announcement 14:00

Plenary Session 1 Grand Ballroom Chair : Hyeon K. Park (UNIST)

14:00 TBD S. Cowley (PPPL)

14:30 JT-60SA Program for Fusion Energy Y. Kamada (QST)

15:00 KSTAR status and future plan Jong-Gu Kwak (NFRI)

15:30- Coffee Break 15:50

Plenary Session 2 Grand Ballroom Chair : Hyeon Gon Lee(NFRI)

15:50 Progress and Current Status of the ITER Project G. S. Lee (ITER)

16:20 Recent Results from LHD Deuterium Experiment M. Tomohiro (NIFS) Overview on Versatile Experiment Spherical Torus 16:50 Yong Seok Hwang (SNU) (VEST) Research 17:20 EUROPEAN Roadmap Towards Fusion Electricity T. Donne (EURO Fusion)

February 21st, Thursday

8:30- Registration & Announcement 9:00

Plenary Session 3 Conference R.(N) 201 Chair : T. Donne (Euro Fusion) Recent progress on long pulse H-mode operation and 09:00 B. Wan (ASIPP) near future plan of EAST 09:30 DIII-D Research Overview and Future Plans D. Hill (GA)

Poster Session 1 Conference R.(N) Lobby 10:00- 11:00 ※ Poster attachment from 09:00 to 12:00

Parallel Oral 1A Conference R.(N) 201 (Advanced Scenario 1) Chair : D. Hill (GA) 11:00 Toward High Performance Steady State Operation in Yong-Su Na (SNU) (inv.) KSTAR: Focused on Hybrid Scenarios 11:20 Advanced Hybrid Scenario with Staircase Pedestal in R. Nazikian (PPPL) (inv.) the DIII-D Tokamak 11:40 High qmin and High ℓi Steady State Scenarios on Jin Myung Park (ORNL) (inv.) KSTAR 12:00 Extension of ITB operation window by plasma shaping Jinil Chung (NFRI) Current Status of TRANSP/OMFIT for supporting 12:15 Jisung Kang (NFRI) KSTAR advanced operation scenario

Parallel Oral 1B Conference R.(N) 203 (Magnetic confinement experiments) Chair : S.Sabbagh (Columbia Univ.) 11:00 Lower Hybrid Antenna Development and Plasma Start-up Y. Takase(Univ. Tokyo) (inv.) Experiment on the TST-2 Spherical Tokamak 11:20 NSTX-U spherical tokamak program and synergistic M. Ono (PPPL) (inv.) collaboration areas for the KSTAR program 11:40 X. Litaudon (Euro Fusion) Overview of JET programme (inv.) (Hyun-Tae Kim) 12:00 The ITER Research Plan and supporting R&D from A. Loarte (ITER IO) (inv.) KSTAR

Parallel Oral 1C Conference R.(N) 205 (Fundamental Plasma Physics) Chair : Yongkyoon In (UNIST) 11:00 Predictions of Tokamak Disruptions via AI/Deep Learning W. M. Tang (PPPL)

(inv.) Methods with Impact on Advanced Scenarios for KSTAR 11:20 The role of fast waves at MHD relaxations: investigation Gunsu S. Yun (POSTECH) (inv.) by ECE imaging and fast RF spectrometry L-H Transition Physics Based on the Ion-Neutral 11:40 Kwan Chul Lee (NFRI) Collisions Role of the parallel compression in the zonal flow 11:55 Sumin Yi (NFRI) generation for rotating tokamak plasmas Helicon wave propagation and possible parasitic 12:10 excitation of slow waves near the edge plasma of Eun-Hwa Kim (PPPL) KSTAR

12:30- Lunch Break (SELF HOSTED) 14:00

Parallel Oral 2A Conference R.(N) 201 (3D Physics) Chair : Gunsu S. Yun (POSTECH) 14:00 Harnessing the multi-modal 3D response of KSTAR N. Logan (PPPL) (inv.) 14:20 Highlights of 3D Field Physics in KSTAR Won-Ha Ko (NFRI)

14:35 Unresolved physics issues of RMP-driven, ELM control Yongkyoon In (UNIST) Rotation and transport effects in RMP-driven ELM-crash 14:50 Gunyoung Park(NFRI) suppression in KSTAR Comparative study of the RMP-driven ELM-crash 15:05 suppression and natural ELM-crash free H-mode Jeahyun Lee (NFRI) plasmas on KSTAR Impact of edge collisionality on ELM-crash control using 15:20 Minwoo Kim (NFRI) n = 1 RMP in KSTAR

Parallel Oral 2B Conference R.(N) 203 (International Collaboration) Chair : Yong-Su Na (SNU) Progress on Disruption Prediction Capability Including 14:00 Transport and Stability Analysis of High Performance S.Sabbagh (Columbia Univ.) (inv.) KSTAR Plasmas 14:20 Evolving collaboration for control & integrated disruption N. Eidietis (GA) (inv.) solutions on KSTAR 14:40 TRANSP-based accelerated predictive models for D. Boyer (PPPL) (inv.) scenario development and control of NSTX-U and KSTAR Real-time MHD Analysis Computer System Design, 15:00 K. Erickson (PPPL) Architecture, and Integration with PCS Collaborative plasma response and vertical stability 15:15 J. Barr (GA) control experiments supporting long-pulse operation

Parallel Oral 2C Conference R.(N) 205 (Transport & Turbulence) Chair : Jae-Min Kwon(NFRI)

14:00 Electromagnetic banana kinetic equation and banana K.C. Shaing (NCK Univ.) (inv.) kinetics in tokamaks Observations of the non-diffusive avalanche-like electron 14:20 heat transport events and their dynamical interaction Minjun J. Choi (NFRI) (inv.) with the shear flow structure Nonlinear gyrokinetic simulation of zonal flow staircase 14:40 effects on trapped electron turbulent transport in Lei Qi (NFRI) (inv.) elongated and KSTAR L-mode plasmas Role of the quasi-coherent mode on the intrinsic rotation 15:00 Woochang Lee (NFRI) of the KSTAR ohmic plasmas Study of parity dependence of tokamak magnetic heat 15:15 Gyung Jin Choi (SNU) transport with gyrokinetic simulation.

Poster Session 2 Conference R.(N) Lobby 15:30- 16:30 ※ Poster attachment from 13:00 to 17:00

Parallel Oral 3A Conference R.(N) 201 (MHD) Chair : Woong Chae Kim(NFRI) 16:30 MHD stability and active mode control analysis for high Young S Park (Columbia Univ.) (inv.) beta plasma operation in KSTAR 16:50 Analyses of Alfven eigenmodes in KSTAR high Tongnyeol Rhee (NFRI) (inv.) performance discharge 17:10 Enhanced fast ion prompt loss due to resonant Kimin Kim (NFRI) (inv.) magnetic perturbations in KSTAR 17:30 Development of Weakly nonlinear ideal MHD code Min-Ho Woo (NFRI) Tearing Modes during Tokamak Plasma Current Ramp 17:45 Jeong-Hun yang (SNU) Up

Parallel Oral 3B Conference R.(N) 203 (Fusion Engineering) Chair : Yong Chu (NFRI) 16:30 Current Status of KO-HCCR TBS Design and R&D Mu-Young Ahn (NFRI) (inv.) Activities 16:50 Operation and Development status of NBI system in Jinhyun Jeong (NFRI) (inv.) KSTAR 17:10 Development of simulator for the KSTAR PF magnet Inho Song (NFRI) (inv.) power supply and TSC + HF systems A theoretical investigation on the AC loss estimation 17:30 Sangjun Oh (NFRI) method for fusion magnet Operation of the KSTAR main helium cryoplant for past 17:45 Dong-Seong Park (NFRI) 10 years

Parallel Oral 3C Conference R.(N) 205 (Young Scientists) Chair : Young-Chul Ghim(KAIST) Non-ambipolar transport due to electrons with 3D 16:30 Seong Moo Yang (SNU) resistive response in the KSTAR tokamak

Study on Effect of RMP to Peeling-Ballooning mode in 16:45 SangKyeun Kim (SNU) KSTAR with Nonlinear MHD simulation 17:00 Disruption mechanism in KSTAR Gnan Kim (POSTECH) Semi-analytic Shape Function of High-harmonic 17:15 Electron Cyclotron Emission in Magnetically Confined June-Eok Leem (POSTECH) Plasma Commissioning of the collective scattering system 17:30 DongJae Lee (UNIST) developed for electron gyroscale turbulence study Analysis of intensity and nonlinear interaction of 17:45 turbulence during ELM crashes measured by beam Jaewook Kim (KAIST) emission spectroscopy in KSTAR

Satellite Meeting 1 Conference R.(N) 209 TBD • 10:00-11:00

Satellite Meeting 2 Conference R.(N) 209 TBD • 15:30-16:30

February 22nd, Friday

8:30- Registration & Announcement 9:00

Parallel Oral 4A Conference R.(N) 201 (Advanced Scenario 2) Chair : R. Nazikian (PPPL) Control-oriented Modeling of the q-profile Dynamic 09:00 Response in Preparation for Advanced Scenario Control E. Schuster (Lehigh Univ.) (inv.) in KSTAR Mid-way between KSTAR first plasma and ITER first 09:20 plasma: the role of KSTAR in bridging gaps in integrated F. Poli (PPPL) (inv.) modeling and control High fusion performance at high Ti/Te in JET-ILW 09:40 baseline plasmas with high NBI heating power and low Hyun-Tae Kim (EURO Fusion) gas puffing Evaluation of mitigation approaches to operational limits 09:55 Hyun-Seok Kim (NFRI) in KSTAR long pulse operation 10:10 Recent advances in KSTAR plasma control Sang Hee Hahn (NFRI)

Parallel Oral 4B Conference R.(N) 203 (PWI) Chair : Suk-Ho Hong(NFRI) 09:00 First experimental tests of a new small angle slot divertor H. Guo (GA) (inv.) on DIII-D 09:20 Computations for fusion materials and plasma material B. Braams (CWI) (inv.) interaction Initial Experimental Results on Boron and Boron Nitride 09:40 E. Gilson (PPPL) Powder Injection Into KSTAR Discharges Empirical modeling of particle transport of heavy 09:55 impurities based on imaging diagnostics in fusion Inwoo Song (KAIST) plasmas 10:10 Research activities on management and control of Gil-Byeong Chae (KAERI) (inv.) divertor heat and particle loads

Parallel Oral 4C Conference R.(N) 205 (ITER) Chair : Jong-Seok Oh (NFRI) 09:00 Overview of the Korean ITER Project Ki-Jung Jung (NFRI) (inv.) 09:20 Design activities of ITER KO diagnostic systems Mun-Seong Cheon (NFRI) Development of Test Procedures for ITER AC/DC 09:35 Jong-Seok Oh (NFRI) Converters with a Limited Capability of the Test Facility 09:50 Progress on the Manufacturing of ITER Thermal Shield Namil Her (NFRI) Status and plan of shattered pellet injection in KSTAR 10:05 Jayhyun Kim (NFRI) for studying ITER disruption mitigation

10:30- Coffee Break 10:50

Plenary Session 4 & Closing Conference R.(N) 201 Chair : Si-Woo Yoon(NFRI)

10:50 New MHD Physics from ECEI system Hyeon K. Park (UNIST) Federated Data-Science for Accelerated KSTAR 11:20 C. S. Chang (PPPL) Collaboration 11:50 Closing Adress Si-Woo Yoon(NFRI)

※Guidance for Oral/Plenary Speakers.

- Official language: English - File format: pdf (.pdf), powerpoint (.ppt, pptx) - If you want to change your presentation file, Please bring latest version in USB before the session - Recommended presentation time: Plenary Talk : 30min. (Include Discussion) Invited Oral : 20min. (Include Discussion) Oral : 15min. (Include Discussion)

POSTER PRESENTATION

Poster Session 1 st Conference R.(N) Lobby (Feb. 21 10:00-11:00) [Notice] Poster Attachment(before 09:00) & Detachment(12:00)

No. Name Affiliation Title

P1-1 June-Woo Juhn NFRI A Multi-channel Two-color Interferometer in KSTAR

A New Approach for Comprehensive Simulation of Plasma P1-2 Jae-Min Kwon NFRI Turbulence in Tokamak Geometry Calibration and performance evaluation of MSE P1-3 sscott PPPL wavelength-interpolation background subtraction on KSTAR Ion heating and rotation acceleration during MHD events on P1-4 Yoosung Kim SNU VEST

P1-5 Myungwon Lee NFRI Analysis of KSTAR Experiments with OMFIT Framework

Nonlinear electrostatic gyrokinetic simulation in the P1-6 Eisung Yoon UNIST presence of magnetic island Investigation of the core MHD instabilities in KSTAR hybrid P1-7 Youngho Lee SNU scenarios Columbia Expanded Study of the Generalized Neoclassical Toroidal P1-8 S.A. Sabbagh Univ. Viscosity Offset Rotation Profile in KSTAR Radio frequency (RF) waves at the onset of the pedestal P1-9 Minho Kim NFRI collapse in KSTAR H-mode plasmas: from ion cyclotron harmonics to whistler waves ITER ELM Predictive Modeling Using Statistical Method P1-10 Bo Seong Kim SNU Based on EPED Database Seong-Heon The measurements of plasma density profile during fast P1-11 NFRI Seo MHD events

P1-12 Dong-Ho Park NFRI Relativistic guiding-center motion of runaway electrons

Solenoid-free Startup utilizing outer PF coils with help of P1-13 H.Y. Lee NFRI pre-ionization via direct XB mode conversion in VEST Visualization of MHD instabilities using threshold filtering of P1-14 Yeon Tae Ha POSTECH ECEI data

P1-15 G.W. Shin UST Real-time detection of L-H transition and ELM in KSTAR

Rotating Halo Current during VDE caused Disruption in P1-16 ByoungHo Park NFRI KSTAR Calculation of the Neutral Beam Density Profile using the P1-17 Jekil Lee UST Beam Penetration Code KSTARBEAM on KSTAR Super-thermal and time-dependent drift effects on cyclotron P1-18 Min Uk Lee POSTECH wave instability Kinetic Description of Geodesic Acoustic Mode in a P1-19 JaeChun Seol NFRI Tokamak

P1-20 Yong Un Nam NFRI Status and Plan for the KSTAR Diagnostics System

Investigation of generalized Bohm sheath criterion for P1-21 Nam-Kyun Kim SNU collisional, magnetized and RF plasmas

Measurement of the KSTAR plasma parameters and ELM Hong Young- P1-22 Hanyang Univ. characteristics in the Far-SOL region using multi-channel Hun probe P1-23 Seo Janghoon NFRI Impurity effect on ITG nonlinear heat flux

P1-24 Jun-Ho Yeom NFRI Study on the Metastable MHD State of the KSTAR Plasmas

Statistical Analysis of Plasma Startup in KSTAR 2018 P1-25 Hyunsun Han NFRI Campaign Optimization of Flux Consumption in ITER Baseline P1-26 Minseo Park SNU Scenario Contribution of energetic ions on the Residual Zonal Flows P1-27 YoungWooCho SNU in Tokamak A theoretical study of the effect of a negative triangular P1-28 Hyojong Lee Hanyang Univ. plasma shape on n=0 MHD resistive wall mo Towards the Development of a Neural-Network Version of P1-29 Shira Morosohk Lehigh Univ. NUBEAM for Scenario Optimization and Control Mykhaylenko V. The non-modal current-driven instabilities of plasmas with a P1-30 Pusan N. univ. S. sheared current velocity Volodymyr The subcritical electromagnetic ion cyclotron instability of a P1-31 Pusan N. univ. Mykhaylenko plasma with a sheared current along the magnetic field Real-time compensation of KSTAR magnetic signal drifts P1-32 Semin Joung KAIST based on Bayesian inference

P1-33 Jeongwon Yoo NFRI Fast-ion Dα spectroscopy diagnostics in KSTAR

Development and upgrade plan of Thomson scattering P1-34 Young-Gi Kim SNU system on VEST A possible non-inductive current drive by using RF P1-35 Kiyong Lee NFRI antennas to produce Hall current in Field-Reverse

P1-36 ByungJun Kang SNU Fast ion driven instability in reversed shear plasmas

Observation of Carbon Impurity Using Hydrogen Isotope P1-37 Ki-Baek Roh SNU Retention on W-Based Divertor Materials The plasma radiation profile reconstruction of KSTAR IRVB P1-38 Seungtae Oh NFRI using the machine-learning algorithm Real time parallel stream processing system for KSTAR L/H P1-39 giilkwon NFRI Detection system AXUV-based bolometry for disruption mitigation study in P1-40 Juhyeok Jang NFRI KSTAR Analysis on validity of basic 2PM and magnetic geometry P1-41 Junghoo Hwang KAIST effects on detachment in KSTAR L-mode plasma Development of both corona and collisional-radiative P1-42 Bin Ahn KAIST models for analysis of low temperature and low density helium plasma Utah State P1-43 Jeong-Young Ji Fluid closures for runaway electrons Univ. Characteristics of current quench, eddy current and wall P1-44 Jun-Gyo BAK NFRI time during disruptions in the KSTAR tokamak Application of the UEDGE code for the KSTAR PFC P1-45 Hyungho Lee NFRI Upgrade Estimating Kubo number based on density fluctuations P1-46 Wonjun Lee KAIST during L-mode, and ELMy and ELM suppressed H-modes in KSTAR

Real-time identification of line spectra of impurities and P1-47 Haewon Shin KAIST methodologies of estimating their concentration in fusion plasmas P1-48 Sang-hee Hahn NFRI Access to ITER similar shape in KSTAR

Effects of zonal flows on transport crossphase in P1-49 M. leconte NFRI DIssipative Trapped-Electron Mode turbulence Study of intrinsic rotation generation based on global P1-50 H. H. Kaang NFRI electomagnetic ITG simultaion in the tokamak plasmas. Progress in nonlinear pedestal collapse simulations with P1-51 Juhyung Kim NFRI resonant magnetic perturbation Development of Global Landau Fluid models using P1-52 Sehoon Ko NFRI BOUT++ Framework Low temperature DC plasma characteristics in a tokamak-like P1-53 Yegeon Lim KAIST poloidal B-field configuration including magnetic X-point

Low temperature DC plasma characteristics in a tokamak-like Yegeon Lim KAIST P1-54 poloidal B-field configuration including magnetic X-point Poster Session 2 Conference R.(N) Lobby (Feb. 21st 15:30-16:30) [Notice] Poster Attachment(before 13:00) & Detachment(17:00)

No. Name Affiliation Title

P2-1 Jungwan CHOI NFRI Delivery of Transformers for ITER AC/DC Converters

P2-2 Dongcheol Seo NFRI Status of Survey IRTV diagnostic in 2018 for KSTAR

Integrated Control System Operation Result on the 2018 P2-3 Jaesic Hong NFRI KSTAR Campaign Ahn Geun P2-4 NFRI Heat Load Calculation of NBI1 Beamline Components Yeong Status of R&D on first mirror for ITER VUV divertor and edge P2-5 Boseong Kim NFRI spectrometers Properties of the 316L(N)-IG ESR Forging Block and Non- P2-6 Hee-Jin Shim NFRI ESR Rolling Plate for the ITER Blanket Shield Block Myeong-Geon Grain orientation dependency of tungsten sub micrometer size P2-7 SNU Lee small blister on hydrogen isotope ion incident angle KyungPook A Tunable Electronic Module for the KSTAR ECE Imaging P2-8 DongHwi Kim N. Univ. System Design of high power VFT and test chamber using standing P2-9 Kwangho Jang NFRI wave for multipactor phenomenon Recent research activities of tungsten material using divertor P2-10 Soo-Hyun Son NFRI manipulator system in KSTAR The EPICS implementation of KSTAR Vacuum Management P2-11 Yeonjung Kim NFRI System(KVMS) and future work Designs of the traveling wave antenna for the helicon wave P2-12 Kenji Saito NIFS current drive and the compact ICRF antenna in KSTAR The water leak events in the KSTAR NBI1 beam line in 2018 P2-13 H. T. Park NFRI KSTAR campaign

P2-14 WI HANMIN NFRI Status of In-vessel Visible Inspection System(IVIS) in KSTAR

Research of Polychromator APD Noise Reduction in KSTAR P2-15 Kim Hajin NFRI Thomson Scattering Diagnostic The First Beam Extraction from the RF Hydrogen Negative Ion P2-16 bna81 NFRI Source in NFRI The Experimental Study of Plasma Switching System for P2-17 Mun Seok Choe UNIST Pulse Control of High Power Millimeter-wave Measurements for neutralization and transmission efficiency of P2-18 Sangwook Jung NFRI NBI-1 system by the calorimetry method Development of high power and control system for ECH P2-19 Sunggug, Kim NFRI system in KSTAR Improvement and test results of the low-order band active Hong Seong- P2-20 NFRI filters to decrease non-characteristic harmonic in the MG Lok power system Development of cool-down control logic and its application P2-21 Kyung-Mo Moon NFRI result of KSTAR campaign

Characteristic Evaluation of the DI polishing system in KSTAR P2-22 Lim Ding-Seok NFRI CWS

P2-23 Mi Joung NFRI Recent status of KSTAR ECH system

New Expansion of Gyrotron system and operation results of P2-24 Rhee, Inhyuk NFRI ECH System in 2018 KSTAR Campaign Inductive Voltage Compensation for Quench Detection of the P2-25 Jinsub Kim NFRI KSTAR CS Coils Considering Plasma Effects Basic Research on Direct Energy Storage and Recovery of P2-26 Doo-Hee Chang KAERI Residual Ion Beams for Neutral Beam Injector Observation of electromagnetic load induced by poloidal eddy P2-27 Jeongwon Lee NFRI currents during plasma disruption in KSTAR Status of I&C development for KSTAR VUV spectrometers P2-28 YoungHwa An NFRI and future plan Hanyang Diagnostics of helium metastable state atom using laser P2-29 shim sungyoung Univ. absorption spectroscopy Chang-Hoon New RAFM steel with enhanced mechanical properties and P2-30 KIMS Lee resistance to irradiation

P2-31 Hyunho Wi NFRI Status and plan of helicon current drive research in KSTAR

LEE DONG Upgrade of TF Slow Discharge & Fast Discharge circuits in P2-32 NFRI KEUN KSTAR Current Progress of Shattered Pellet Injection System in P2-33 SooHwan Park NFRI KSTAR Reliability Verification for the KSTAR Magnet Monitoring P2-34 Youngok Kim NFRI Sensors Due to Long-Term Operation Operation results of vacuum pumping system on the KSTAR P2-35 Lee Hyunmyung NFRI 11th campaign

P2-36 Jung Tae Lee SNU Operation Analysis on the KSTAR PF Coil

Shin, Hyun Preparation of Integrated Test of MCS for ITER Coil Power P2-37 NFRI Kook Supply Sysytem Development of a DAQ system for the Impurity Powder P2-38 Sangwon YUN NFRI Dropper System Hardware Upgrades of DAQ System of KASTAR P2-39 Seung-Ju Lee NFRI Reflectometer and Its Operational Plan Hirofumi Experimental Evaluation of the High-Voltage Signal P2-40 NFRI Yonekawa Conditioners for Quench Detection of the ITER PF Commissioning progress of a new ion source for KSTAR P2-41 Wook Cho NFRI second NBI system Kyung Hee Erosion and redeposition of hydrocarbon impurities at KSTAR P2-42 HOSUN LEE Univ. during 2015 - 2017 campaign Numerical Investigation of Quench Event in the Innermost Pair P2-43 Dong Keun Oh NFRI of the KSTAR Central Solenoids

P2-44 Choi Daejun NFRI The shot statistics of KSTAR NBI1 in 2018

Dankook P2-45 Woo Jun Byeon Measurement of hydrogen permeation in tungsten Univ.

P2-46 Joo Jae Joon NFRI Modification of the KSTAR 9kW HRS

Mechanical behavior of the KSTAR CS magnet during long P2-47 Hee-Jae Ahn NFRI pulse plasma discharges

MEASUREMENT COLLABORATION NETWORK of KSTAR P2-48 Jin-Seop PARK NFRI with SCIENCE DMZ

P2-49 kim bongchul NFRI The Installation Status of ITER Transformer

Overview of the Impurity Powder Dropper(IPD) system P2-50 J. I. Song NFRI installed in KSTAR First Operation of Integrated Control System for new NBI P2-51 Jong-Su Kim NFRI system in KSTAR HEUNG-SU Effect of temperature on magnetic measurements in KSTAR P2-52 NFRI KIM tokamak

P2-53 Hee-soo. Kim NFRI Radiation Safety of KSTAR 2018 Campaign

The Performance Evaluation of the FPGA based KSTAR Fast P2-54 Myungkyu Kim NFRI Interlock System at the start-up failure Thermo-Hydraulic Analysis of The KSTAR PF Cry-ogenic loop P2-55 Hyunjung Lee NFRI using SUPERMAGNET code Progress of development of tungsten monoblock for upgraded P2-56 Eunnam Bang NFRI KSTAR A Relation between Void Fraction, Strand Bending Strain and P2-57 Soun Pil Kwon NFRI the Characteristic Bending Wavelength in Nb3Sn CICC Measurements of KSTAR Deuterium-Deuterium (D- P2-58 Youngseok Lee NFRI D)/Deuterium-Tritium (D-T) Fusion Neutron Energy

P2-59 Min Ho Chang NFRI Process Design for ITER Storage and Delivery System

New development the Collective Scattering Diagnostic DAQ P2-60 Taegu Lee NFRI system based on EPICS in KSTAR Design of ultrafast charge exchange spectrometer for the P2-61 Jae-young Jang SNU fluctuation measurements of ion temperature and toroidal velocity in magnetic fusion plasmas An Attempt to Develop Data Retrieving Service from Multiple P2-62 Taehyun Tak NFRI Source on KSTAR

P2-63 Jeehyun Kim NFRI Overview of KSTAR LHCD system development

P2-64 Jong Ha Lee NFRI Status of KSTAR Thomson scattering diagnostic in 2018

※Guidance for Poster Speakers.

- Official Language: English

- Poster Size : A0 (841X1,189mm) or equivalent

- Each poster has been assigned a number, and must be mounted on the appropriately numbered board. Please check number.