Tungsten control in type-I ELMy H-mode plasmas on EAST
Tungsten control in type-I ELMy H-mode plasmas on EAST
复制标题
EAST 上 I 型 ELMy H 模式等离子体中的钨控制
DOI:
10.1007/s41365-021-00929-4
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发表时间:
2021-09
影响因子:
2.8
通讯作者:
Team East
中科院分区:
文献类型:
--
作者:
Xu Zong;Wu Zhen-Wei;Zhang Ling;Cheng Yun-Xing;Gao Wei;Lin Xiao-Dong;Gao Xiang;Chen Ying-Jie;Huang Yue-Heng;Huang Juan;Zang Qing;Jie Yin-Xian;Duan Yan-Min;Li Ying-Ying;Liu Hai-Qing;Xu Guo-Sheng;Team East
The first experimental investigation of the tungsten behavior in ELMy H-mode plasmas with co-/counter neutral beam injection (NBI) and unfavorable/favorableBtwas performed on EAST. Tungsten was found to accumulate easily in ELMy H-mode plasma with co-NBI heating and unfavorableBt. Thus, in this case the tungsten concentration can exceed 10−4, resulting in degradation of the plasma confinement and periodic H–L transitions. To reduce the tungsten concentration in steady-state type-I ELMy H-mode operation, counter-NBI is applied to modify the density and temperature and brake the plasma toroidal rotation. The applied counter-NBI decreases the PHZ +Erinward pinch velocity and reverses the direction of neoclassical inward convection, thus decreasing the tungsten concentration from ~ 7 × 10−5to ~ 2 × 10−5in type-I ELMy H-mode plasma with favorableBt. A comparison of the effects of differentBtdirections on the tungsten behavior also shows that favorableBtis beneficial for reducing the tungsten concentration in the core plasma. These results imply that counter-NBI with favorableBtcan effectively prevent tungsten accumulation and expand the operating window for exploring steady-state type-I ELMy H-mode operation of EAST.
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影响因子:
3.5
作者:
B. Wan;East Team
通讯作者:
B. Wan;East Team
影响因子:
2.2
作者:
T. Pütterich;R. Dux;R. Neu;M. Bernert;M. Beurskens;V. Bobkov;S. Brezinsek;C. Challis;J. Coen
通讯作者:
T. Pütterich;R. Dux;R. Neu;M. Bernert;M. Beurskens;V. Bobkov;S. Brezinsek;C. Challis;J. Coen
影响因子:
2.2
作者:
T. Parisot;R. Guirlet;C. Bourdelle;X. Garbet;N. Dubuit;F. Imbeaux;P. Thomas
通讯作者:
T. Parisot;R. Guirlet;C. Bourdelle;X. Garbet;N. Dubuit;F. Imbeaux;P. Thomas
影响因子:
2.2
作者:
D. V. van Vugt;G. Huijsmans;M. Hoelzl;A. Loarte
通讯作者:
D. V. van Vugt;G. Huijsmans;M. Hoelzl;A. Loarte
影响因子:
3.3
作者:
T. Hender;P. Buratti;F. Casson;B. Alper;Y. Baranov;M. Baruzzo;C. Challis;F. Koechl;K. Lawson-K.
通讯作者:
T. Hender;P. Buratti;F. Casson;B. Alper;Y. Baranov;M. Baruzzo;C. Challis;F. Koechl;K. Lawson-K.