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Experimental study of L-H transition triggered by supersonic molecular beam injection in the HL-2A tokamak

Feng Bei-Bin Yao Liang-Hua Chen Cheng-Yuan Ji Xiao-Quan Zhong Wu-Lü Shi Zhong-Bing Yu De-Liang Cui Zheng-Ying Song Xian-Ming Duan Xu-Ru

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Experimental study of L-H transition triggered by supersonic molecular beam injection in the HL-2A tokamak

Feng Bei-Bin, Yao Liang-Hua, Chen Cheng-Yuan, Ji Xiao-Quan, Zhong Wu-Lü, Shi Zhong-Bing, Yu De-Liang, Cui Zheng-Ying, Song Xian-Ming, Duan Xu-Ru
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  • Features of L-H transition are investigated using the supersonic molecular beam injection (SMBI) with directional velocity under low heating powers in the present paper. Comparing the edge density profiles, it is analyzed that the conventional gas puffing (GP) and SMBI have effects on L-H transition. Experimental results suggest that the SMBI does directly trigger L-H transition on HL-2A, and it considerably reduces the power threshold of L-H transition. After abundant experimental data are analyzed and processed, it is found that the minimum L-H transition power with SMBI decreases by 10% when it is compared with GP trigged H-mode under same conditions.
    • Funds: Project supported by the National Natural Science Foundation of China (Grant No. 10975049), and the National Science and Technology Major Project of the Ministry of Science and Technology of China (Grant Nos. 2009GB104007, 2010GB102003).
    [1]

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    [2]

    Gohil P, Baylor L R, Jernigan T C, Burrell K H, Carlstrom T N 2001 Phys. Rev. Lett. 86 644

    [3]

    Yao L H, Tang N Y, Cui Z Y, Xu D M, Deng Z C, Ding X T, Luo J L, Dong J F, Guo G C, Yang S K, Cui C H, Xiao Z G, Liu D Q, Chen X P, Yan L W, Yan D H, Wang E Y, Deng X W 1998 Nucl. Fusion 38 631

    [4]

    Duan X R, Dong J Q, Yan L W, Ding X T, Yang Q W, Rao J, Liu D Q, Xuan W M, Chen L Y, Li X D, Lei G J, Cao J Y, Cao Z, Song X M, Huang Y, Liu Y, Mao W C, Wang Q M, Cui Z Y, Ji X Q, Li B, Li G S, Li H J, Luo C W, Wang Y Q, Yao L H, Yao L Y, Zhang J H, Zhou J, Zhou Y, Liu Y, HL-2A team 2010 Nucl. Fusion 50 095011

    [5]

    Duan X R, Huang Y, Liu D Q, Xuan W M, Chen L Y, Rao J, Song X M, Cao Z, Li B, Cao J Y, Lei G J, Li X D, Liu Y, Yang Q W, Yao L Y, Ding X T, Dong J Q, Yan L W, Pan C H, Liu Y, HL-2A team 2011 24th Symposium on Fusion Engineering Chicago, USA, June 26-30, SO1B-3

    [6]

    Rao J, Li B, Zhou J, Yao L Y, Kang Z H, Wang M W, Li L, Feng K, Huang M, Lu Z H, Zhang J S, Li Q, Liu Y 2009 Nuclear Fusion Plasma Phys. 29 324 (in Chinese) [饶军, 李波, 周俊, 姚列英, 康自华, 王明伟, 李立, 冯鲲, 黄梅, 陆志鸿, 张劲松, 李青, 刘永 2009 核聚变与等离子体物理 29 324]

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    Wei H L, Cao J Y, Rao J, Lei G J, Jiang S F, Liu H, Yu L M, Xie W M, Li M, Yang X F, Zou G Q, Lu D L, Duan X R 2012 Rev. Sci. Instrum 83 023302

    [8]

    Feng B B, Yao L H, Li W, Chen C Y, Feng Z 2008 Nuclear Fusion Plasma Phys. 28 97 (in Chinese) [冯北滨, 姚良骅, 李伟, 陈程远, 冯震 2008 核聚变与等离子体物理 28 97]

    [9]

    Zhu G L, Liu D Q, Xu H B, Vinyar I, Lukin A, Wang M J 2011 Fusion Engineering and Design 86 2286

    [10]

    Xu G S, Wan B N, Li J G, Gong X Z, Hu J S, Shan J F, Li H, Mansfield D K, Humphreys D A, Naulinfor V, EAST team 2011 Nucl. Fusion 51 072001

    [11]

    Chen C Y, Yao L H, Feng B B, Zhou Y, Yu D L, Yan L W, Yang Q W, Duan X R 2010 Proceedings of the 7th General Scientific Assembly of the Asia Plasma and Fusion Association Aomori Japan, October 27-30, 2009 p37-42

    [12]

    Holzhauer E, Dodel G, Endler M, Gernhard J, Gannone L, Manso M, MeCormick K, Mertm V, Niedermeyer H, Rudyj A, Serra F, Siva A, Theimert G, Varela P, Wagner F, Zohm H, ASDEX Team 1994 Plasma Phys. Control Fusion 36 A3-A11

    [13]

    Yu D L, Chen C Y, Yao L H, Dong J Q, Feng B B, Zhou Y, Shi Z B, Zhou J, Han X Y, Zhong W L, Cui Z Y, Huang Y, Cao Z, Liu Yi, Yan L W, Yang Q W, Duan X R, Liu Yong 2012 Nucl. Fusion 52 082001

  • [1]

    Wagner F, Becker G, Behringer K, Campbell D, Eberhagen A, Engelhardt W, Fussmann G, Gehre O, Gernhardt J, Gierke G V, Haas G, Huang M, Karger F, Keilhacker M, Kluber Q, Kornherr M, Lackner K, Lisitano G, Lister G G, Mayer H M, Meisel D, MIiller E R, Murmann H, Niedermeyer H, Poschenrieder W, Rapp H, Bohr H, Schneider F, Siller G, Speth E, Stabler A, Steuer K H, Venus G, Vollmer O, Yu Z 1982 Phys. Rev. Lett. 49 1408

    [2]

    Gohil P, Baylor L R, Jernigan T C, Burrell K H, Carlstrom T N 2001 Phys. Rev. Lett. 86 644

    [3]

    Yao L H, Tang N Y, Cui Z Y, Xu D M, Deng Z C, Ding X T, Luo J L, Dong J F, Guo G C, Yang S K, Cui C H, Xiao Z G, Liu D Q, Chen X P, Yan L W, Yan D H, Wang E Y, Deng X W 1998 Nucl. Fusion 38 631

    [4]

    Duan X R, Dong J Q, Yan L W, Ding X T, Yang Q W, Rao J, Liu D Q, Xuan W M, Chen L Y, Li X D, Lei G J, Cao J Y, Cao Z, Song X M, Huang Y, Liu Y, Mao W C, Wang Q M, Cui Z Y, Ji X Q, Li B, Li G S, Li H J, Luo C W, Wang Y Q, Yao L H, Yao L Y, Zhang J H, Zhou J, Zhou Y, Liu Y, HL-2A team 2010 Nucl. Fusion 50 095011

    [5]

    Duan X R, Huang Y, Liu D Q, Xuan W M, Chen L Y, Rao J, Song X M, Cao Z, Li B, Cao J Y, Lei G J, Li X D, Liu Y, Yang Q W, Yao L Y, Ding X T, Dong J Q, Yan L W, Pan C H, Liu Y, HL-2A team 2011 24th Symposium on Fusion Engineering Chicago, USA, June 26-30, SO1B-3

    [6]

    Rao J, Li B, Zhou J, Yao L Y, Kang Z H, Wang M W, Li L, Feng K, Huang M, Lu Z H, Zhang J S, Li Q, Liu Y 2009 Nuclear Fusion Plasma Phys. 29 324 (in Chinese) [饶军, 李波, 周俊, 姚列英, 康自华, 王明伟, 李立, 冯鲲, 黄梅, 陆志鸿, 张劲松, 李青, 刘永 2009 核聚变与等离子体物理 29 324]

    [7]

    Wei H L, Cao J Y, Rao J, Lei G J, Jiang S F, Liu H, Yu L M, Xie W M, Li M, Yang X F, Zou G Q, Lu D L, Duan X R 2012 Rev. Sci. Instrum 83 023302

    [8]

    Feng B B, Yao L H, Li W, Chen C Y, Feng Z 2008 Nuclear Fusion Plasma Phys. 28 97 (in Chinese) [冯北滨, 姚良骅, 李伟, 陈程远, 冯震 2008 核聚变与等离子体物理 28 97]

    [9]

    Zhu G L, Liu D Q, Xu H B, Vinyar I, Lukin A, Wang M J 2011 Fusion Engineering and Design 86 2286

    [10]

    Xu G S, Wan B N, Li J G, Gong X Z, Hu J S, Shan J F, Li H, Mansfield D K, Humphreys D A, Naulinfor V, EAST team 2011 Nucl. Fusion 51 072001

    [11]

    Chen C Y, Yao L H, Feng B B, Zhou Y, Yu D L, Yan L W, Yang Q W, Duan X R 2010 Proceedings of the 7th General Scientific Assembly of the Asia Plasma and Fusion Association Aomori Japan, October 27-30, 2009 p37-42

    [12]

    Holzhauer E, Dodel G, Endler M, Gernhard J, Gannone L, Manso M, MeCormick K, Mertm V, Niedermeyer H, Rudyj A, Serra F, Siva A, Theimert G, Varela P, Wagner F, Zohm H, ASDEX Team 1994 Plasma Phys. Control Fusion 36 A3-A11

    [13]

    Yu D L, Chen C Y, Yao L H, Dong J Q, Feng B B, Zhou Y, Shi Z B, Zhou J, Han X Y, Zhong W L, Cui Z Y, Huang Y, Cao Z, Liu Yi, Yan L W, Yang Q W, Duan X R, Liu Yong 2012 Nucl. Fusion 52 082001

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Publishing process
  • Received Date:  12 June 2012
  • Accepted Date:  25 July 2012
  • Published Online:  05 January 2013

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