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Intermittent events dominated by meso-scale physics and control of a macro system in steady state spherical tokamak

Research Project

Project/Area Number 21246139
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Nuclear fusion studies
Research InstitutionKyushu University

Principal Investigator

ZUSHI Hideki  九州大学, 応用力学研究所, 教授 (20127096)

Co-Investigator(Kenkyū-buntansha) SHIKAMA Taiichi  京都大学, 工学研究科, 講師 (80456152)
Project Period (FY) 2009 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥43,550,000 (Direct Cost: ¥33,500,000、Indirect Cost: ¥10,050,000)
Fiscal Year 2012: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2011: ¥11,310,000 (Direct Cost: ¥8,700,000、Indirect Cost: ¥2,610,000)
Fiscal Year 2010: ¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
Fiscal Year 2009: ¥14,690,000 (Direct Cost: ¥11,300,000、Indirect Cost: ¥3,390,000)
Keywordsメゾスケール / blob / fast camera / PDP
Research Abstract

This research is aiming at the subject associated with "Intermittent events dominated by meso-scale physics and control of a macro system in steady state spherical tokamak". Mainly, structure formation and its controllability under a process from an open magnetic field configuration to the closed one, contact to two closed magnetic surfaces, and open field region outside the closed one are of interest.During the research period, 1) current start-up in tokamak using non-inductive method and 2) blob propagation crossing the SOL region, which extends from the closed flux surfaces to the open ones. These phenomena can be recognized as intermitted or off-normal events against the steady state operation of the tokamak plasma. This research aims at pointing out the characteristics of the meso-scale physics for the macroscopic structure formation under the microscopic turbulence. The evaluation for the coupling coefficient between the meso-scopic and macroscopic systems will be investigated by … More evaluation of a phase relaxation time. Finally we would like to establish control methods for steady state tokamak operation. During H21-23 experiments for rf driven non-inductive plasma production and sustainment have been performed in QUEST and CPD. The followings have been achieved.
(1) Using 8.2 GHz ECWs at ~ 100 kW, non-inductive current start-up and current sustainment has been successfully demonstrated at 35 kA, which is the world record. High poloidal equilibrium at ・・p =1.5 and ・<1(triangles) has been obtained. The maximum duration of 300 sec is also performed for ST configuration. During the formation phase from the open to closed surfaces, several diagnostic tools have been applied and then the following physical picture could be drawn. The chamber aspect ratio is small enough for several harmonics to exist inside the plasma, and it has been found that the MOMFC(mirror ratio depending on the Bzcurvature) and the amplitude of Bz/Bt contribute to the fast ramp-up of the current, because ofthe initially born energetic electrons of 10 keV could be well confined in the open magnetic fields. The high ・・p~ 1 plasma scenario has been demonstrated at high MOMFC=2 and Bz/Btof 10 %. Ipof 16 kA at the high current ramp-up rate of 0.3 - 0.5 MA/s was achieved non-inductively. A natural inboard poloidal field null appeared as MOMFCincreased and this equilibrium could be sustained for ~ 10 seconds. Based on the fluctuation measurements it has been observed that the long correlation length along the magnetic surfaces has been measured when a closed surface is formed. Thisindicates that the phenomenon dominated by a mesoscopic scale occurred during the topological change.
(2)The second aspect addressed in this research isthe statistical approach of the SOL turbulence, plasma transport, blob propagation.This is aimed at identification ofthe generation region of the blob by charactering the pdf of the fluctuations, two dimensional structure of pdf and statistical aspect, blob propagation and acceleration, and flow pattern in the SOL and its impact on the turbulent transport. These observations have been carried out by using the wide viewing fast camera imaging and local probe measurements. Statistical aspects of the convective transport with respect to the variation in magnetic field pitch are dwelled upon. Progressive enhancement of fluctuations and consequent blob generation and propagation are observed with the increase in Bzat a constant Bt. Amplitude and waiting time of the blobs attains a maximum for highest Bz/Bt(=7.8%). 2D statistical analysis of the images enables us to identify blobformation location precisely at the steep density gradient region. Accelerated radial propagation was observed for large sized blobs. The effect of mirror ratio on turbulence is studied with the change in poloidal field curvature. Fluctuation characteristics are quite different for magnetic shears. The region characterized by the deviation of pdf from the Gaussian to gamma can be considered as a typical scale, with which the mesoscopic phenomenon dominates. A new diagnostic and analytical method have been developed to evaluate the plasma flow using the fluctuations. Less

Report

(4 results)
  • 2012 Final Research Report ( PDF )
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (95 results)

All 2013 2012 2011 2010 2009 Other

All Journal Article (38 results) (of which Peer Reviewed: 38 results) Presentation (56 results) Remarks (1 results)

  • [Journal Article] Non-inductive current drive by EC waves in an inboard poloidal magnetic field null configuration on the Spherical Tokamak QUEST2013

    • Author(s)
      S. Tashima, H. Zushi, et.al
    • Journal Title

      PFR

    • NAID

      130004687671

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Edge turbulence characteristics of the Ohmic-ECRH driven plasma current phase investigated with fast visible imaging in QUEST2013

    • Author(s)
      S. Banerjee, H. Zushi, et.al
    • Journal Title

      PFR

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Statistical features of coherent structures at increasing magnetic field pitch investigated using fast imaging in QUEST2012

    • Author(s)
      S. Banerjee, H. Zushi, et al
    • Journal Title

      Nuclear Fusion

      Volume: 52 Pages: 123016-123016

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Fast visible imaging and edge turbulence analysis in QUEST2012

    • Author(s)
      S. Banerjee, H. Zushi, et.al
    • Journal Title

      Review of Scientific Instruments

      Volume: 83

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Statistical Analysis of the Convective Intermittent Transport at the Edge Region of QUEST2012

    • Author(s)
      S. Banerjee, H. Zushi, et.al
    • Journal Title

      IEEJ

      Volume: 132 Pages: 545-554

    • NAID

      10030777906

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Non-inductive Current Start-up and Plasma Equilibrium with an Inboard Poloidal Field Null by Means of Electron Cyclotron Waves in QUEST2012

    • Author(s)
      H. Zushi, et.al
    • Journal Title

      Proc. 24TH IAEA FUSION ENERGY CONFERENCE

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Analysis of PWI footprint traces and material damage on the first walls of the spherical tokamak QUEST2012

    • Author(s)
      S.K. Sharma, H. Zushi, et.al.
    • Journal Title

      Fusion Engenerring Design

      Volume: 87 Pages: 77-86

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Permeation measurements for investigating atomic hydrogen flux and wall pumping / fuelling dynamics in QUEST2012

    • Author(s)
      S.K. Sharmaa, H. Zushi et.al
    • Journal Title

      Journal of Nuclear Materials

      Volume: 420 Pages: 83-93

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Statistical Interpretation of the Density Fluctuations From the High-Speed Visible Images of Edge Turbulence on QUEST2011

    • Author(s)
      Santanu Banerjee, H. Zushi, et.al.
    • Journal Title

      IEEE TRANSACTIONS ON PLASMA SCIENCE

      Volume: 39

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Acceleration of Blob Driven by Helical Instability in a Simple Magnetic Configuration in QUEST2011

    • Author(s)
      H. Zushi, et.al
    • Journal Title

      Journal of Nuclear Materials

      Volume: 415

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Plasma polarization spectroscopy of atomic and molecular emissions from magnetically confined plasmas2011

    • Author(s)
      T. Shikama, K. Fujii, S. Kado, H. Zushi, et.al
    • Journal Title

      Canadian Journal of Physics

      Volume: 89 Issue: 5 Pages: 495-501

    • DOI

      10.1139/p10-118

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Statistical Interpretation of the Density Fluctuations From the High-Speed Visible Images of Edge Turbulence on QUEST2011

    • Author(s)
      Santanu Banerjee, H.Zushi, N.Nishino, K.Hanada, H.Q.Liu, M.Ishiguro, T.Ryoukai, S.Tashima, K.Nakamura, H.Idei, M.Hasegawa, A.Fujisawa, the QUEST group
    • Journal Title

      IEEE TRANSACTIONS ON PLASMA SCIENCE

      Volume: VOL.39, NO.11 Pages: 3006-3007

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Analysis of PWI footprint traces and material damage on the first walls of the spherical tokamak QUEST2011

    • Author(s)
      S.K.Sharma, H.Zushi, et.al
    • Journal Title

      fusion engenerring and design

      Volume: 87 Pages: 77-86

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Non-Inductive Start up of QUEST Plasma by RF Power2011

    • Author(s)
      K.Hanada, H.Zushi, et.al
    • Journal Title

      Plasma Science and Technology

      Volume: Vol.13 No.3 Pages: 307-307

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Direct measurement of energetic electron flow in Q-shu University experiment with steady-state spherical tokamak2011

    • Author(s)
      M.Ishiguro, K.Hanada, H.Liu, H.Zushi, et.al
    • Journal Title

      Review of Scientific Instruments

      Volume: 82

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Permeation measurements for investigating atomic hydrogen flux and wall pumping/fuelling dynamics in QUEST2011

    • Author(s)
      S.K.Sharma, H.Zushi, et.al
    • Journal Title

      Journal of Nuclear Materials

      Volume: 420 Pages: 83-93

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Acceleration of Blob driven by Helcal Instability In a Simple Magnetic Configuration in QUEST2011

    • Author(s)
      H.Zushi, et.al
    • Journal Title

      Journal of Nuclear Materials

      Volume: 415

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Metallic dusts behavior in an all-metal first wall on TRIAM-1M2011

    • Author(s)
      K.Hanada, K.Sasaki, H.Zushi, et.al
    • Journal Title

      Journal of Nuclear Materials

      Volume: 415

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hydrogen permeation and recombination in Ni membrane placed on spherical tokamak QUEST2011

    • Author(s)
      I.Takagi, H.Zushi, et.al
    • Journal Title

      Journal of Nuclear Materials

      Volume: 415

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Study of the plasma driven permeation of hydrogen through a nickel membrane in RF and ohmic plasmas in the spherical tokamak QUEST2010

    • Author(s)
      S. K. Sharma, H. Zushi, et.al
    • Journal Title

      Journal of Plasma and Fusion Research Series

      Volume: 9 Pages: 142-146

    • Related Report
      2012 Final Research Report 2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hard X-ray measurement during the current startup phase in QUEST2010

    • Author(s)
      S. Tashima, H. Zushi, et.al
    • Journal Title

      Journal of Plasma and Fusion Research Series

      Volume: 9 Pages: 316-321

    • Related Report
      2012 Final Research Report 2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Measurement of Hydrogen Permeation due to Atomic Flux using Permeation Probe in the Spherical Tokamak QUEST2010

    • Author(s)
      S.K. Sharma, H. Zushi, et.al.
    • Journal Title

      Fusion Engineering and Design

      Volume: 85 Pages: 950-955

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Study of Edge Turbulence from the Open to Closed Magnetic Field Configuration during the Current Ramp-up Phase in QUEST2010

    • Author(s)
      H. Zushi, et.al.
    • Journal Title

      Proc. 23rd IAEA Fusion Energy Conference

      Pages: 11-16

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Analysis of the footprint traces on the first walls of the compact plasma wall interaction device (CPD) using surface analysis and electron orbit calculations2010

    • Author(s)
      S.K. Sharma, H. Zushi, et.al
    • Journal Title

      Nucl. Fusion

      Volume: 50

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Measurement of hydrogen permeation due to atmic flux using permeation probe in the spherical tokamak QUEST2010

    • Author(s)
      SanjieevK Sharma, Hideki Zushi, Ikuji Takagi, Yuki Hisano, Mizuki Aakamoto, Yuta Higashizono, Taichi Shikama, Sigeru Morita, Tetsuo Tanabe, Naoaki Yoshida, Kazuaki Hanada, Makoto Hasegawa, Osamu Mitarai, Kazuo Nakamura, Hiroshi Idei, Kohnosuke N Sato, Shoji Kawasaki, Hisatoshi Nakashima, Aki Higashijima, Yousuke Nakashima, Nobuyuki Nishino, Yuji Hatano, Akira Sagara, Yukio Nakamura, Naoka Ashikawa, Takashi Maekawa
    • Journal Title

      Fusion Engineering and Design

      Volume: 85 Pages: 950-955

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Acceleration of Blob driven by Helcal Instability In a Simple Magnetic Configuration in QUEST2010

    • Author(s)
      H.Zushi, N.Nishino, K.Hanada, H.Honma, H.Q.Liu Y.Higashizono, M Sakamoto, Ogata, S.Tashima, T.Ryoukai, QUEST group
    • Journal Title

      Journal of Nuclear Materials

      Volume: (online) Pages: 1-4

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Analysis of the footprint traces on first walls of the compact plasma wall interaction device CPD using surface analysis and electron orbit calculations2010

    • Author(s)
      S.K.Sharma, H.Zushi, M.Osakabe, Y.Takeiri, N.Yoshida, M.Hasegawa, T.Yoshinaga, K.Hanada, H.Idei, M.Sakamoto, K.Nakamura, K.N.Sato, CPD Group
    • Journal Title

      Nuclear Fusion

      Volume: 50

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The correlation analysis between electron density fluctuation and RF stray power in the CPD electron cyclotron plasma2010

    • Author(s)
      T.Ryoukai, H.Zushi, T.Morisaki, H.Idei, K.Hanada, T.Mutoh, S.Kubo, K.Nagasaki, CPD experiment group
    • Journal Title

      Journal of Plasma and Fusion Research Series

      Volume: 9 Pages: 310-315

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Calculation of a magnetic field effect on emission spectra of light diatomic molecules for diagnostic application to fusion edge plasmas2010

    • Author(s)
      T.Shikama, K.Fujii, K.Mizushiri, M.Hasuo, S.Kado, H.Zushi
    • Journal Title

      Plasma Physics and Controlled Fusion

      Volume: 51

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Analysis of the footprint traces on first walls of the compact plasma wall interaction device CPD using surface analysis and electron orbit calculations2010

    • Author(s)
      S.K.Sharma, H.Zushi
    • Journal Title

      Nuclear Fusion 50

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hard X-ray measurement during the current startup phase in QUEST2010

    • Author(s)
      S.Tashima, H.Zushi
    • Journal Title

      Plasma and Fusion Research (掲載受理)

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Calculation of a magnetic field effect on emission spectra of light diatomic molecules for diagnostic application to fusion edge plasmas2009

    • Author(s)
      T Shikama, K Fujii, K Mizushiri, M Hasuo, S Kado and H Zushi
    • Journal Title

      Plasma Phys. Control. Fusion

      Volume: 51

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] wo Dimensional Density Fluctuation Measurements During the Non-Inductive Current Ramp-up Phase in the Compact Plasma Wall Interaction Experimental Device CPD2009

    • Author(s)
      H. Zushi, et.al.
    • Journal Title

      Plasma Science Technology

      Volume: 11 Pages: 397-397

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Active particle control experiments and critical particle flux discriminating between the wall pumping and fueling in the compact plasma wall interaction device CPD spherical tokamak2009

    • Author(s)
      H. Zushi, et.al
    • Journal Title

      Nuclear Fusion

      Volume: 49 Pages: 55020-55020

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Calculation of a magnetic field effect on emission spectra of light diatomic molecules for diagnostic application to fusion edge plasmas2009

    • Author(s)
      Shikama, T.; Fujii, K.; Mizushiri, K.; Hasuo, M.; Kado, S.; Zushi, H
    • Journal Title

      PLASMA PHYSICS AND CONTROLLED FUSION

      Volume: 51 (12) Pages: 122001-122001

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Calculation of a magnetic field effect on emission spectra of light diatomic molecules for diagnostic application to fusion edge plasmas2009

    • Author(s)
      T.Shikama, K.Fujii, K.Mizushiri, M.Hasuo, S.Kado, H.Zushi
    • Journal Title

      Plasma Physics and Controlled Fusion 51

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Two Dimensional Density Fluctuation Measurements Durirrg the Non-Inductive Current Ramp-up Phase in the Compact Plasma Wall Interaction Experimental Device CPD2009

    • Author(s)
      H.Zushi
    • Journal Title

      Plasma Science and Technology 11

      Pages: 397-401

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Field line tying and magnetic shear effects of the vertical field on low frequency density fluctuations in cpd2009

    • Author(s)
      T.Ryoukai,, H.Zushi
    • Journal Title

      Plasma and Fusion Research 8

      Pages: 100-104

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] QUEST ダイバータ配位における非誘導電流駆動と定常運転における粒子循環研究2013

    • Author(s)
      図子 秀樹
    • Organizer
      平成 24 年度双方向型共同研究成果報告会
    • Place of Presentation
      核融合科学研究所
    • Year and Date
      2013-01-24
    • Related Report
      2012 Final Research Report
  • [Presentation] 非誘導電流駆動を用いた高ポロイダルベータ平衡とその解析2013

    • Author(s)
      H. Zushi, et.al
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学
    • Related Report
      2012 Final Research Report
  • [Presentation] Present status of QUEST experiments2013

    • Author(s)
      H. Zushi
    • Organizer
      Workshop on QUEST and Related ST RF Startup and Sustainment Plasma Research
    • Place of Presentation
      Kyushu Univ
    • Related Report
      2012 Final Research Report
  • [Presentation] H2/He retention in QUEST2013

    • Author(s)
      H. Zushi
    • Organizer
      Workshop on QUEST and Related ST RF Startup and Sustainment Plasma Research
    • Place of Presentation
      Kyushu Univ
    • Related Report
      2012 Final Research Report
  • [Presentation] 球状トカマクに於ける粒子制御と定常プラズマ放電2012

    • Author(s)
      図子秀樹
    • Organizer
      プラズマ・核融合学会第29回年会
    • Year and Date
      2012-11-29
    • Related Report
      2012 Final Research Report
  • [Presentation] 高温プラズマ力学研究センターに関連した今までの成果と将来構想2012

    • Author(s)
      図子秀樹
    • Organizer
      RIAMフォーラム 2012
    • Place of Presentation
      九州大学
    • Year and Date
      2012-06-05
    • Related Report
      2012 Final Research Report
  • [Presentation] QUEST電流駆動における自発的内側poloidal field null配位の形成について2012

    • Author(s)
      H.Zushi, S.Tashima, M.Ishiguro, M.Hasegawa, S.Barnejee, H.Nishino, M.Isobe, K.Hanada, H.Idei, K.Nakamura, A.Fujisawa, Y.Nagashima, K.Matsuoka, K.Toi, T.Maekawa, Y.Takase, M.Kikuchi, A.Fukuyama, A.Ejiri, Y.Ueda, O.Mitarai, S.Okamura
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学
    • Year and Date
      2012-03-26
    • Related Report
      2011 Annual Research Report
  • [Presentation] QUEST装置における硬X線計測によるECH電流立ち上げ時と定常維持時の高速電子解析2012

    • Author(s)
      田島西夜, 図子秀樹, 磯部光孝, 岡村昇一, 出射浩, 花田和明, 中村一男, 藤澤彰英, 長谷川真, 永島芳彦, 石黒正貴, 川崎昌二, 中島寿年, 東島亜紀
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学
    • Year and Date
      2012-03-26
    • Related Report
      2011 Annual Research Report
  • [Presentation] Effect of poloidal magnetic field topology on the edge turbulence of 8.2 GHz slab plasma in QUEST2012

    • Author(s)
      Santanu Banerjee, H.Zushi, N.Nishino, K.Hanada, H.Honma, H.Q.Liu, M.Ishiguro, T.Ryoukai, S.Tashima, T.Inoue, K.Nakamura, H.Idei, M.Hasegawa, A.Fujisawa, K.Matsuoka, the QUEST group
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学
    • Year and Date
      2012-03-25
    • Related Report
      2011 Annual Research Report
  • [Presentation] QUEST ダイバータ配位における非誘導電流駆動と定常化研究2012

    • Author(s)
      図子秀樹
    • Organizer
      平成 23 年度双方向型共同研究成果報告会
    • Place of Presentation
      核融合科学研究所
    • Year and Date
      2012-01-26
    • Related Report
      2012 Final Research Report
  • [Presentation] QUESTダイバータ配位における非誘導電流駆動と定常化研究2012

    • Author(s)
      図子秀樹
    • Organizer
      平成23年度双方向型共同研究成果報告会
    • Place of Presentation
      核融合科学研究所
    • Year and Date
      2012-01-26
    • Related Report
      2011 Annual Research Report
  • [Presentation] 電流駆動における自発的 high beta poloidal 配位の解析2012

    • Author(s)
      H. Zushi,et.al
    • Organizer
      日本物理学会2012 年 秋季大会
    • Place of Presentation
      横浜国立大学
    • Related Report
      2012 Final Research Report
  • [Presentation] Non-inductive Current Start-up and Plasma Equilibrium with an Inboard Poloidal Field Null by Means of Electron Cyclotron Waves in QUEST2012

    • Author(s)
      H. Zushi , et.al.
    • Organizer
      24TH IAEA FUSION ENERGY CONFERENCE
    • Place of Presentation
      San Diego, USA
    • Related Report
      2012 Final Research Report
  • [Presentation] QUEST 電流駆動における自発的内側 poloidal field null 配位の形成について2012

    • Author(s)
      H. Zushi,et.al
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学
    • Related Report
      2012 Final Research Report
  • [Presentation] He分光イメージングを用いた周辺プラズマ電子密度・温度計測2011

    • Author(s)
      井上翼, 図子秀樹, 西野信博, 了戒智文, Santanu Banerjee, 長谷川真, 中村一男, 花田和明, 藤澤彰英, 出射浩, 永島芳彦, 川崎昌二, 中島寿年, 東島亜紀
    • Organizer
      プラズマ核融合九州山口沖縄支部大会
    • Place of Presentation
      大分大学
    • Year and Date
      2011-12-17
    • Related Report
      2011 Annual Research Report
  • [Presentation] QUEST装置における水素リサイクリングに伴う水素の壁吸蔵・放出の評価2011

    • Author(s)
      井上雄貴、図子秀樹、高木郁二、津田憲一、古田美憲、田辺哲朗、吉田直亮、Sanjeev Kumar Sharma QUEST実験グループ
    • Organizer
      プラズマ核融合九州山口沖縄支部大会
    • Place of Presentation
      大分大学
    • Year and Date
      2011-12-17
    • Related Report
      2011 Annual Research Report
  • [Presentation] 熱電対・静電プローブを用いた熱流束計測2011

    • Author(s)
      間平陽介, 図子秀樹、永岡賢一、長壁正樹、竹入康彦、吉田直亮、サンタヌ・バナジー、田島西夜、石黒正貴、QUEST実験グループ
    • Organizer
      プラズマ核融合九州山口沖縄支部大会
    • Place of Presentation
      大分大学
    • Year and Date
      2011-12-17
    • Related Report
      2011 Annual Research Report
  • [Presentation] ECW/EBW Heating and Current Drive Experi ment Results and Prospects to CW Operation in QUEST2011

    • Author(s)
      H.Idei, H.Zushi, K.Hanada, K.Nakamura, A.Fujisawa, M.Hasegawa, N.Yoshida, M.Sakamoto, H.Watanebe, K.Tokunaga, Y.Nagashima, A.Ejiri, M.Sakaguchi, E.Kalinnikova, M.Ishiguro, S.Tashima, A.Fukuyama H.Igami, S.Kubo, S.K.Sharma, T.Ryokai, H.Q.Liu, M.Isobe, K.Nagaoka, H.Nakanishi, N.Nishino, S.Kawasaki, H.Nakashima A.Higashijima, Y.Takase, T.Maekawa, O.Mitarai, M.Kikuchi, K.Toi
    • Organizer
      21st International Toki Conference (ITC-21)
    • Place of Presentation
      Ceratopia Toki, Toki-City, Gifu, Japan
    • Year and Date
      2011-11-29
    • Related Report
      2011 Annual Research Report
  • [Presentation] QUESTプラズマSOL揺動の高次メーメントをもちいた"偶然力"の評価2011

    • Author(s)
      図子秀樹、西野信博、S.BANERJEE、花田和明、長谷川真、石黒正貴、田島西夜、中村一男、藤澤彰英、出射浩、坂本瑞樹、川崎昌二、中島寿年、東島亜紀、江尻晶、高瀬雄一、前川孝、御手洗修、福山敦
    • Organizer
      PLASMACONFERENCE2011/第28回プラズマ、核融合学会年会
    • Place of Presentation
      石川県立音楽堂、金沢市
    • Year and Date
      2011-11-25
    • Related Report
      2011 Annual Research Report
  • [Presentation] Simulation of deuterium trapping and thermal desorption from W exposed to low energy high flux plasma2011

    • Author(s)
      Rusinov A., Honda K., Sakamoto M., Zushi H.,Tanabe T, Gasparyan Yu., Pisarev A.
    • Organizer
      PLASMACONFERENCE2011/第28回プラズマ、核融合学会年会
    • Place of Presentation
      石川県立音楽堂、金沢市
    • Year and Date
      2011-11-24
    • Related Report
      2011 Annual Research Report
  • [Presentation] QUESTにおける電子サイクロトロン波を用いた電流駆動時の硬X線計測と高速電子挙動解析2011

    • Author(s)
      田島西夜、図子秀樹、磯部光孝、出射浩、岡村昇一、花田和明、中村一男、藤澤彰英、長谷川真、永島芳彦、石黒正貴、川崎昌二、中島寿年、東島亜紀
    • Organizer
      PLASMACONFERENCE2011/第28回プラズマ、核融合学会年会
    • Place of Presentation
      石川県立音楽堂、金沢市
    • Year and Date
      2011-11-22
    • Related Report
      2011 Annual Research Report
  • [Presentation] Statistical analysis of the convective intermittent transport at the edge region of QUEST2011

    • Author(s)
      Santanu Banerjee, H.Zushi, N.Nishino, K.Hanada, S.K.Sharma, T.Inoue, H.Honma, H.Q.Liu, M.Ishiguro, T.Ryoukai, S.Tashima, K.Nakamura, H.Idei, M.Hasegawa, A.Fujisawa, the QUEST group
    • Organizer
      The Joint Meeting of 5th IAEA Technical Meeting on Spherical Tori 16th International Workshop on Spherical Torus (ISTW2011) 2011 US-Japan Workshop on ST Plasma
    • Place of Presentation
      National Institute for Fusi on Science, Toki, Japan
    • Year and Date
      2011-09-28
    • Related Report
      2011 Annual Research Report
  • [Presentation] QUEST experiments towards steady state operation of spherical tokamaks2011

    • Author(s)
      K.Hanada, H.Zushi, H.Idei, K.Nakamura, M.Ishiguro, S.Tashima, E.I.Kalinnikova, M.Sakamoto, M.Hasegawa, A.Fujisawa, K.N.Sato, N.Yoshid, H.Watanab, K.Tokunaga, Y.Nagashima, A.Higashijima, S.Kawasaki, H.Nakashima, H.Liu, O.Mitarai, T.Maekawa, A.Fukuyama, Y.Takase, J.Qian
    • Organizer
      The Joint Meeting of 5th IAEA Technical Meeting on Spherical Tori 16th International Workshop on Spherical Torus (ISTW2011) 2011 US-Japan Workshop on ST Plasma
    • Place of Presentation
      National Institute for Fusi on Science, Toki, Japan
    • Year and Date
      2011-09-27
    • Related Report
      2011 Annual Research Report
  • [Presentation] QUESTの最近の実験2011

    • Author(s)
      図子秀樹
    • Organizer
      第6回QUEST研究会「STのコア・エッジ・周辺プラズマ・材料を結ぶ粒子輸送現象の解明を目指して」
    • Place of Presentation
      九州大学筑紫地区
    • Year and Date
      2011-08-03
    • Related Report
      2011 Annual Research Report
  • [Presentation] Origin and evolution of coherent convective structures investigated using fast imaging in QUEST2011

    • Author(s)
      Santanu Banerjee, H.Zushi, N.Nishino, K.Hanada, H.Honma, H.Q.Liu, M.Ishiguro, T.Ryoukai, S.Tashima, K.Nakamura, H.Idei, M.Hasegawa, A.Fujisawa, the QUEST group
    • Organizer
      1st Asia Pacific Transport Working Group (APTWG)
    • Place of Presentation
      National Institute for Fusi on Science, Toki, Japan
    • Year and Date
      2011-06-15
    • Related Report
      2011 Annual Research Report
  • [Presentation] QUEST非誘導電流駆動実験の現状と将来計画2011

    • Author(s)
      図子秀樹
    • Organizer
      RIAMフォーラム2011
    • Place of Presentation
      九州大学筑紫地区
    • Year and Date
      2011-06-09
    • Related Report
      2011 Annual Research Report
  • [Presentation] 九大における QUEST を用いた定常プラズマ実験と高温壁定常 PWI 実験機器整備2011

    • Author(s)
      図子秀樹
    • Organizer
      平成 22 年度双方向型共同研究成果報告会
    • Place of Presentation
      核融合科学研究所
    • Year and Date
      2011-01-20
    • Related Report
      2012 Final Research Report
  • [Presentation] QUEST プラズマ SOL 揺動の高次メーメントをもちいた"偶然力"の評価2011

    • Author(s)
      図子秀樹、他
    • Organizer
      PLASMACONFERENCE2011 / 第28回プラズマ、核融合学会年会
    • Place of Presentation
      石川県立音楽堂、金沢市
    • Related Report
      2012 Final Research Report
  • [Presentation] QUEST 非誘導電流駆動実験の現状と将来計画2011

    • Author(s)
      図子秀樹
    • Organizer
      RIAM フォーラム 2011
    • Place of Presentation
      九州大学筑紫地区
    • Related Report
      2012 Final Research Report
  • [Presentation] QUEST プラズマ SOL 揺動の高次モーメントを用いた"偶然力"の評価2011

    • Author(s)
      図子秀樹
    • Organizer
      日本物理学会第66回年次大会
    • Place of Presentation
      新潟大学
    • Related Report
      2012 Final Research Report
  • [Presentation] 壁排気特性における臨界入射束の役割と同位体効果の解明2011

    • Author(s)
      図子秀樹、他
    • Organizer
      研特定領域「核融合トリチウム」領域番号 476、研究成果/計画報告会
    • Place of Presentation
      核融合科学研究所
    • Related Report
      2012 Final Research Report
  • [Presentation] Hydrogen Permeation Measurements in the Spherical Tokamak QUEST and its Numerical Modeling2010

    • Author(s)
      S.K.Sharma, H.Zushi, I.Takagi, Y.Hisano, T.Shikama, S.Morita, T.Tanabe, N.Yoshida, M.Sakamoto, Y.Higashizono, K.Hanada, M.Hasegawa, O.Mitarai, K.Nakamura, H.Idei, K.N.Sato, S.Kawasaki, H.Nakashima, A.Higashijima, Y.Nakashima, N.Nishino, Y.Hatano, A.Sagara, Y.Nakamura, N.Ashikawa, T.Maekawa, Y.Kishimoto, Y.Takase, QUEST Group
    • Organizer
      The 9th International Conference on Tritium Science and Technology (TRITIUM 2010)
    • Place of Presentation
      Nara
    • Year and Date
      2010-10-25
    • Related Report
      2010 Annual Research Report
  • [Presentation] Study of Edge Turbulence from the Open to Closed Magnetic Field Configuration during the Current Ramp-up Phase in QUEST2010

    • Author(s)
      H.Zushi, N.Nishino, the QUEST team
    • Organizer
      23rd IAEA Fusion Energy Conference
    • Place of Presentation
      韓国
    • Year and Date
      2010-10-12
    • Related Report
      2010 Annual Research Report
  • [Presentation] QUESTにおける非誘導電流駆動時の硬X線計測による高速電子解析2010

    • Author(s)
      田島西夜, 図子秀樹, 磯部光孝, 岡村昇一, 出射浩, 花田和明, 長谷川真, 了戒智文, 石黒正貴
    • Organizer
      日本物理学会2010年秋季大会
    • Place of Presentation
      大阪府立大学
    • Year and Date
      2010-09-26
    • Related Report
      2010 Annual Research Report
  • [Presentation] QUESTプラズマ SOL揺動pdfの高次メーメントの空間構造について2010

    • Author(s)
      図子秀樹、西野信博、花田和明、長谷川真、石黒正貴、田島西夜、中村一男、藤澤彰英、出射浩、坂本瑞樹、川崎昌二、中島寿年、東島亜紀、江尻晶、高瀬雄一、前川孝、御手洗修、福山敦
    • Organizer
      日本物理学会2010年秋季大会
    • Place of Presentation
      大阪府立大学
    • Year and Date
      2010-09-24
    • Related Report
      2010 Annual Research Report
  • [Presentation] Steady State Operation of ST Tokamak : QUEST2010

    • Author(s)
      H.Zushi
    • Organizer
      The 5th Japan-Korea Seminar on Advanced Diagnostics for Steady-State Fusion Plasma
    • Place of Presentation
      九州大学
    • Year and Date
      2010-08-26
    • Related Report
      2010 Annual Research Report
  • [Presentation] The role of fast electrons on the non-inductive current ramp-up in QUEST2010

    • Author(s)
      S.Tashima, H.Zushi, M.Isobe, S.Okamura, H.Idei, K.Hanada, S.K.Sharma, T.Ryoukai, M.Ishiguro, H.Liu, the QUEST group
    • Organizer
      37th EPS Conference on Plasma Physics
    • Place of Presentation
      Dublin
    • Year and Date
      2010-06-25
    • Related Report
      2010 Annual Research Report
  • [Presentation] QUESTの周辺揺らぎとBlob特性2010

    • Author(s)
      図子秀樹
    • Organizer
      日本物理学会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-20
    • Related Report
      2009 Annual Research Report
  • [Presentation] QUESTにおけるプラズマ電流立ち上げと維持実験における硬X線計測2010

    • Author(s)
      田島西夜、図子秀樹
    • Organizer
      日本物理学会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-20
    • Related Report
      2009 Annual Research Report
  • [Presentation] Plasma polarization spectroscopy of atomic and molecular emission from magnetically confined plasmas2010

    • Author(s)
      T. Shikama, K. Fujii, S. Kado, H. Zushi, et.al
    • Organizer
      10th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas
    • Place of Presentation
      Berkeley, California
    • Related Report
      2012 Final Research Report
  • [Presentation] QUEST における複合サイクロトロン波によるEBW 電流駆動実験2010

    • Author(s)
      図子秀樹、他
    • Organizer
      第27回プラズマ・核融合学会年会
    • Place of Presentation
      北海道大学学術交流会館
    • Related Report
      2012 Final Research Report
  • [Presentation] QUEST プラズマ SOL 揺動 pdf の高次メーメントの空間構造について2010

    • Author(s)
      図子秀樹、他
    • Organizer
      日本物理学会 2010 年秋季大会
    • Place of Presentation
      大阪府立大学中百舌鳥キャンパス
    • Related Report
      2012 Final Research Report
  • [Presentation] ST Tokamak: QUEST2010

    • Author(s)
      H. Zushi
    • Organizer
      The 5th Japan-Korea Seminar on Advanced Diagnostics for Steady-State Fusion Plasma
    • Place of Presentation
      九州大学春日キャンパスおよび九州地区国立大学九重共同研修所
    • Related Report
      2012 Final Research Report
  • [Presentation] Study of Edge Turbulence from the Open to Closed Magnetic Field Configuration during the Current Ramp-up Phase in QUEST2010

    • Author(s)
      H. Zushi, et.al
    • Organizer
      23rd IAEA Fusion Energy Conference
    • Place of Presentation
      Daejon, Korea
    • Related Report
      2012 Final Research Report
  • [Presentation] QUEST の周辺揺らぎと Blob特性2010

    • Author(s)
      図子秀樹他
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学津島キャンパス
    • Related Report
      2012 Final Research Report
  • [Presentation] Plasma polarization spectroscopy of atomic and molecular emission from magnetically confined plasmas2010

    • Author(s)
      T.Shikama, K.Fujii, S.Kado, H.Zushi, M.Sakamoto, A.Iwamae, M.Goto, S.Morita, M.Hasuo
    • Organizer
      10th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas
    • Place of Presentation
      Berkeley, California U.S.A.
    • Related Report
      2010 Annual Research Report
  • [Presentation] Wall pumping studies in spherical tokamak QUEST using permeation measurements and a static gas balance method2010

    • Author(s)
      S.K.Sharma, H.Zushi, I.Takagi, Y.Hisano, T.Shikama, S.Morita, T.Tanabe, N.Yoshida, M.Sakamoto, Y.Higashizono, K.Hanada, M.Hasegawa, O.Mitarai, K.Nakamura, H.Idei, K.N.Sato, S.Kawasaki, H.Nakashima, A.Higashijima, Y.Nakashima, N.Nishino, Y.Hatano, A.Sagara, Y.Nakamura, N.Ashikawa, T.Maekawa, Y.Kishimoto, Y.Tasase, QUEST group
    • Organizer
      19th International Conference on Plasma Surface Interactions
    • Place of Presentation
      San Diego, U.S.A
    • Related Report
      2010 Annual Research Report
  • [Presentation] Acceleration of Blob driven by Helcal Instability In a Simple Magnetic Configuration in QUEST2010

    • Author(s)
      H.Zushi, N.Nishino, K.Hanada, H.Honma, H.Q.Liu Y.Higashizono, M Sakamoto, Ogata, S.Tashima, T.Ryoukai, QUEST group
    • Organizer
      19th International Conference on Plasma Surface Interactions
    • Place of Presentation
      San Diego, U.S.A
    • Related Report
      2010 Annual Research Report
  • [Presentation] Hydrogen Permeation and Recombination in Ni Membrane Place on Spherical Tokamak QUEST2010

    • Author(s)
      I.Takagi, H.Zushi, R.Imade, T.Komura, S.K.Sharma, Y.Hisano, Y.Hatano, Y.Nakamura, A.Sagara, N.Ashikawa
    • Organizer
      19th International Conference on Plasma Surface Interactions
    • Place of Presentation
      San Diego, U.S.A
    • Related Report
      2010 Annual Research Report
  • [Presentation] QUESTにおける電流立ち上げと維持実験における硬X線のパラメータ依存性2009

    • Author(s)
      田島西夜、図子秀樹
    • Organizer
      プラズマ・核融合学会九州・沖縄・山口支部大会
    • Place of Presentation
      山口大学
    • Year and Date
      2009-12-22
    • Related Report
      2009 Annual Research Report
  • [Presentation] 共同研究実施近況2009

    • Author(s)
      図子秀樹
    • Organizer
      プラズマ・核融合学会第26回年会インフォーマルミーティング「長時間維持球状トカマク研究計画QUEST」
    • Place of Presentation
      京都市国際交流会館
    • Year and Date
      2009-12-03
    • Related Report
      2012 Final Research Report
  • [Presentation] 開放磁場配位におけるQUEST高周波プラズマの擬平衡とinterchange waveの発生について2009

    • Author(s)
      図子秀樹
    • Organizer
      日本物理学会
    • Place of Presentation
      熊本大学
    • Year and Date
      2009-09-25
    • Related Report
      2009 Annual Research Report
  • [Presentation] Liビームプローブ法による電子密度揺動計測でのビーム減衰揺動項の効果2009

    • Author(s)
      了戒智文、図子秀樹
    • Organizer
      日本物理学会
    • Place of Presentation
      熊本大学
    • Year and Date
      2009-09-25
    • Related Report
      2009 Annual Research Report
  • [Presentation] QUEST装置における硬X線スペクトル解析2009

    • Author(s)
      田島西夜、図子秀樹
    • Organizer
      日本物理学会
    • Place of Presentation
      熊本大学
    • Year and Date
      2009-09-25
    • Related Report
      2009 Annual Research Report
  • [Presentation] 開放磁場配位におけるQUEST 高周波プラズマの擬平衡とinterchange wave の発生について2009

    • Author(s)
      図子秀樹他
    • Organizer
      日本物理学会
    • Place of Presentation
      九州大学
    • Year and Date
      2009-06-12
    • Related Report
      2012 Final Research Report
  • [Presentation] QUEST における壁状態の実時間計測(PDP 計測から)2009

    • Author(s)
      図子秀樹, 他
    • Organizer
      プラズマ・核融合学会第26回年会
    • Place of Presentation
      京都市国際交流会館
    • Year and Date
      2009-01-04
    • Related Report
      2012 Final Research Report
  • [Remarks]

    • URL

      http://www.triam.kyushu-u.ac.jp

    • Related Report
      2012 Final Research Report

URL: 

Published: 2009-04-01   Modified: 2019-07-29  

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