Behaviors of ion and electron temperatures on EAST with lower hybrid current drive and lithium wall coating

Xu Jing-Cui; Wang Fu-Di; L� Bo; Shen Yong-Cai; Li Ying-Ying; Fu Jia; Shi Yue-Jiang; Sanggon Lee; M. Bitter; K. Hill

doi:10.7498/aps.61.145203

Abstract

It is observed that the profiles of ion and electron temperatures become broader within a region of r/a 0.6 on experimental advanced superconducting tokamak with high-power lower hybrid wave heating and lithium wall coating. It is found that the above phenomena are related to the low recycling at the first wall as a result of the lithium wall coating. The lithium wall coating affects the plasma particles coming from the plasma boundary to the first wall, thereby causing a reduction in recycling. The low recycling causes the temperature profiles to change. It is also found that the electron and ion temperatures approach to each other as a result of high collision rate between electrons and ions when the plasma density increases.

Keywords:

Authors and contacts

1.
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China;
2.
National Fusion Research Institute, 52 Eoeun-Dong, Yusung-Gu, Daejeon 305-333, Korea;
3.
Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, NJ 08543-0451, USA
Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 10975155, 11175208, 10990212), and National Magnetic Confinement Fusion Science Program of China (Grant Nos. 2012GB101000, 2011GB101000, 2011GB107000).

References

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[2]	Hu L Q, Wan B N, Hu C D, Liu B H, Wu Z W, Huang J, Rowan W L, Huang H, Gentle K, HT-7 Teams 2004 Rev. Sci. Instrum. 75 3496
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[13]	Dimits A M, Bateman G, Beer M A, Cohen B I, Dorland W, Hammett G W, Kim C, Kinsey J E, Kotschenreuther M, Kritz A H, Lao L L, Mandrekas J, Nevins W M, Parker S E, Redd A J, Shumaker D E, Sydora R, Weiland J 2000 Phys. Plasmas 7 969
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[15]	Troyon F, Gruber R, Saurenmann H, Semenzato S, Succi S 1984 Plasma Phys. Contr. F 26 209
[16]	Shimomura Y, Aymar R, Chuyanov V A, Huguet M, Matsumoto H, Mizoguchi T, Murakami Y, Polevoi A R, Shimada M, ITER Joint Cent Team, ITER Home Teams 2001 Nucl. Fusion 41 309
[17]	Porcelli F, Boucher D, Rosenbluth M N 1996 Plasma Phys. Contr. F 38 2163
[18]	Greenwald M, Terry J L, Wolfe S M, Ejima S, Bell M G, Kaye S M, Neilson G H 1988 Nucl. Fusion 28 2199
[19]	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, Naulin V, EAST Teams, International Collaborators 2011 Nucl. Fusion 51 072001
[20]	Wan B N, EAST Teams, HT-7 Teams, International Collaborators 2009 Nucl. Fusion 49 104011
[21]	Huang Q C, Luo J R, Wang H Z, Li C 2006 Acta Phys. Sin. 55 281 (in Chinese) [黄勤超, 罗家融, 王华忠, 李翀 2006 55 281]
[22]	Shi Y J, Wang F D, Wan B N, Bitter M, Lee S, Bak J, Hill K, Fu J, Li Y Y, Zhang W, Ti A, Ling B L 2010 Plasma Phys. Contr. F 52 085014
[23]	Bitter M, Hill K W, Roquemore A L, Beiersdorfer P, Kahn S M, Elliott S R, Fraenkel B 1999 Rev. Sci. Instrum. 70 292
[24]	Bitter M, Hill K W, Stratton B, Roquemore A L, Mastrovito D, Lee S G, Bak J G, Moon M K, Nam U W, Smith G, Rice J E, Beiersdorfer P, Fraenkel B S 2004 Rev. Sci. Instrum. 75 3660
[25]	Lee S G, Bak J G, Bitter M, Hill K, Nam U W, Kim Y J, Moon M K 2004 Rev. Sci. Instrum. 75 3693
[26]	Lee S G, Bak J G, Nam U W, Moon M K, Cheon J K 2007 Rev. Sci. Instrum. 78 063504
[27]	Huang J, Wan B N, Li J G, Gong X Z, Zhang X D, Wu Z W, Zhou Q, HT-7 Teams 2006 Nucl. Fusion 46 262

Cited By

[1]	Zhou Q, Wan B N, Wu Z W, Huang J 2005 Chin. Phys. 14 2539
[2]	Hu L Q, Wan B N, Hu C D, Liu B H, Wu Z W, Huang J, Rowan W L, Huang H, Gentle K, HT-7 Teams 2004 Rev. Sci. Instrum. 75 3496
[3]	Ding B J, Shan J F, Liu F K, Fang Y D, Wei W, Wu Z W, Chen Z Y, Xu H D, Wang M, Jiang M, Zhang G R, Huang F, Zhao Y P, Kuang G L 2006 Chin. Phys. 15 2989
[4]	Shi Y J, Wan B N, Chen Z Y, Hu L Q, Lin S Y, Ruan H L, Qian J P, Zhen X J, Ding B J, Kuang G L, Li J G, HT-7 Teams 2005 Chin. Phys. 14 1193
[5]	Ono M, Bell M G, Bell R E, Kaita R, Kugel H W, LeBlanc B P, Canik J M, Diem S, Gerhardt S P, Hosea J, Kaye S, Mansfield D, Maingi R, Menard J, Paul S F, Raman R, Sabbagh S A, Skinner C H, Soukhanovskii V, Taylor G, NSTX Research Team 2010 Fusion Eng. Des. 85 882
[6]	Maingi R, Kaye S M, Bell R E, Biewer T M, Chang C S, Gates D A, Gerhardt S P, Hosea J, LeBlanc B P, Meyer H, Mueller D, Park G Y, Raman R, Sabbagh S A, Stevenson T A, Wilson J R 2010 Nucl. Fusion 50 064010
[7]	Maingi R, Osborne T H, LeBlanc B P, Bell R E, Manickam J, Snyder P B, Menard J E, Mansfield D K, Kugel H W, Kaita R, Gerhardt S P, Sabbagh S A, Kelly F A, NSTX Research Team 2009 Phys. Rev. Lett. 103 075001
[8]	Maingi R, Bell R E, Canik J M, Gerhardt S P, Kaye S M, LeBlanc B P, Osborne T H, Bell M G, Fredrickson E D, Lee K C, Menard J E, Park J K, Sabbagh S A, NSTX Research Team 2010 Phys. Rev. Lett. 105 135004
[9]	Zuo G Z, Hu J S, Li J G, Luo N C, Hu L Q, Fu J, Chen K Y, Ti A, Zhang L L 2010 Plasma Sci. Technol. 12 646
[10]	Hu J S, Wang X M, Li J H, Wu J H, Chen Y, Wang H Y, Yang D W, Luo N C, Li S F, Li G Y, Wang L, Yu Y W, Dou R C, Hu Q S, Bao L M, Zhao Y P, Li J G, EAST Vacuum Wall Conditioning Group 2009 Fusion Eng. Des. 84 2167
[11]	Mansfield D K, Roquemore A L, Schneider H, Timberlake J, Kugel H, Bell M G, NSTX Research Team 2010 Fusion Eng. Des. 85 890
[12]	Zakharov L E, Gorelenkov N N, White R B, Krasheninnikov S I, Pereverzev G V 2004 Fusion Eng. Des. 72 149
[13]	Dimits A M, Bateman G, Beer M A, Cohen B I, Dorland W, Hammett G W, Kim C, Kinsey J E, Kotschenreuther M, Kritz A H, Lao L L, Mandrekas J, Nevins W M, Parker S E, Redd A J, Shumaker D E, Sydora R, Weiland J 2000 Phys. Plasmas 7 969
[14]	Wakatani M, Mukhovatov V S, Burrell K H, Connor J W, Cordey J G, Esipchuk Y V, Garbet X, Lebedev S V, Mori M, Toi K, Wolfe S M, Boucher D, Chudnovskii A N, DeBoo J C, Houlberg W A, Kaye S M, Miura Y, Ogawa Y, Osipenko M V, Ryter F, Takizuka T, Bateman G, Bracco G, Campbell D J, Carlstrom T N, Dnestrovski Y N, Fujita T, Fukuyama A, Gohil P, Greenwald M J, Hoang T, Hogeweij G M D, Hubbard A E, Kardaun O J W F, Kinsey J E, Konings J A, Marinucci M, Martin Y R, Mikkelsen D R, Ongena J, Osborne T H, Perkins F W, Polevoi A R, Rosenbluth M N, Schissel D P, Snipes J A, Stubberfield P M, Synakowski E J, Taroni A, Thomsen K, Turner M F, Uckan N A, Valovic M, Vlad G, Waltz R E, Weiland J, Zohm H, Post D E, Uckan N A, Azumi M, Ivanov N, Sauthoff N R, Wakatani M, Nevins W M, Shimada M, van Dam J 1999 Nucl. Fusion 39 2175
[15]	Troyon F, Gruber R, Saurenmann H, Semenzato S, Succi S 1984 Plasma Phys. Contr. F 26 209
[16]	Shimomura Y, Aymar R, Chuyanov V A, Huguet M, Matsumoto H, Mizoguchi T, Murakami Y, Polevoi A R, Shimada M, ITER Joint Cent Team, ITER Home Teams 2001 Nucl. Fusion 41 309
[17]	Porcelli F, Boucher D, Rosenbluth M N 1996 Plasma Phys. Contr. F 38 2163
[18]	Greenwald M, Terry J L, Wolfe S M, Ejima S, Bell M G, Kaye S M, Neilson G H 1988 Nucl. Fusion 28 2199
[19]	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, Naulin V, EAST Teams, International Collaborators 2011 Nucl. Fusion 51 072001
[20]	Wan B N, EAST Teams, HT-7 Teams, International Collaborators 2009 Nucl. Fusion 49 104011
[21]	Huang Q C, Luo J R, Wang H Z, Li C 2006 Acta Phys. Sin. 55 281 (in Chinese) [黄勤超, 罗家融, 王华忠, 李翀 2006 55 281]
[22]	Shi Y J, Wang F D, Wan B N, Bitter M, Lee S, Bak J, Hill K, Fu J, Li Y Y, Zhang W, Ti A, Ling B L 2010 Plasma Phys. Contr. F 52 085014
[23]	Bitter M, Hill K W, Roquemore A L, Beiersdorfer P, Kahn S M, Elliott S R, Fraenkel B 1999 Rev. Sci. Instrum. 70 292
[24]	Bitter M, Hill K W, Stratton B, Roquemore A L, Mastrovito D, Lee S G, Bak J G, Moon M K, Nam U W, Smith G, Rice J E, Beiersdorfer P, Fraenkel B S 2004 Rev. Sci. Instrum. 75 3660
[25]	Lee S G, Bak J G, Bitter M, Hill K, Nam U W, Kim Y J, Moon M K 2004 Rev. Sci. Instrum. 75 3693
[26]	Lee S G, Bak J G, Nam U W, Moon M K, Cheon J K 2007 Rev. Sci. Instrum. 78 063504
[27]	Huang J, Wan B N, Li J G, Gong X Z, Zhang X D, Wu Z W, Zhou Q, HT-7 Teams 2006 Nucl. Fusion 46 262

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Vol. 61, Issue 14 - 2012-07-20

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