Understanding core tungsten (W) transport and control in an improved high-performance fully non-inductive discharge on EAST
文献类型：期刊论文
| 作者 | Shi, Shengyu7,8; Chen, Jiale7 ; Bourdelle, Clarisse6; Jian, Xiang4,5; Odstrcil, Tomas4; Garofalo, Andrea M.4; Cheng, Yunxin7; Chao, Yan7; Zhang, Ling7; Duan, Yanmin7
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| 刊名 | NUCLEAR FUSION
 |
| 出版日期 | 2022-06-01 |
| 卷号 | 62 |
| 关键词 | EAST fully non-inductive discharge heavy high-Z impurity W transport neoclassical and turbulent transport W control |
| ISSN号 | 0029-5515 |
| DOI | 10.1088/1741-4326/ac3e3c |
| 通讯作者 | Chen, Jiale(chen@ipp.ac.cn) ; Zhang, Ling(zhangling@ipp.ac.cn) |
| 英文摘要 | The behavior of heavy/high-Z impurity tungsten (W) in an improved high-performance fully non-inductive discharge on EAST with ITER-like divertor (ILD) is analyzed. It is found that W could be well controlled. The causes of no W accumulation are clarified by analyzing the background plasma parameters and modeling the W transport. It turns out that the electron temperature (T (e)) and its gradient are usually high while the toroidal rotation and density peaking of the bulk plasma are small. In this condition, the modeled W turbulent diffusion coefficient is big enough to offset the total turbulent and neoclassical pinch, so that W density profile for zero particle flux will not be very peaked. Combining NEO and TGLF for the W transport coefficient and the impurity transport code STRAHL, not only the core W density profile is predicted but also the radiated information mainly produced by W in the experiment can be closely reconstructed. At last, the physics of controlling W accumulation by electron cyclotron resonance heating (ECRH) is illustrated considering the effects of changed T (e) by ECRH on ionization balance and transport of W. It shows that the change of ionization and recombination balance by changed T (e) is not enough to explain the experimental observation of W behavior, which should be attributed to the changed W transport. By comparing the W transport coefficients in two kinds of plasmas with different T (e) profiles, it is shown that high T (e) and its gradient play a key role to generate large turbulent diffusion through increasing the growth rate of linear instability so that W accumulation is prevented. |
| WOS关键词 | IMPURITY TRANSPORT ; PROFILE |
| 资助项目 | National Nature Science Foundation of China[12175277] ; National Nature Science Foundation of China[11975271] ; National Nature Science Foundation of China[11775269] ; National Nature Science Foundation of China[11975273] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000783980800001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Nature Science Foundation of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/128581]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Chen, Jiale; Zhang, Ling |
| 作者单位 | 1.Hebei Key Lab Compact Fus, Langfang 065001, Peoples R China 2.ENN Sci & Technol Dev Co Ltd, Langfang 065001, Peoples R China 3.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China 4.Gen Atom, POB 85608, San Diego, CA 92186 USA 5.Univ Calif San Diego, Ctr Energy Res, La Jolla, CA 92093 USA 6.CEA, IRFM, F-13108 St Paul Les Durance, France 7.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 8.Univ Sci & Technol China, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Shengyu,Chen, Jiale,Bourdelle, Clarisse,et al. Understanding core tungsten (W) transport and control in an improved high-performance fully non-inductive discharge on EAST[J]. NUCLEAR FUSION,2022,62. |
| APA | Shi, Shengyu.,Chen, Jiale.,Bourdelle, Clarisse.,Jian, Xiang.,Odstrcil, Tomas.,...&Wan, Yuanxi.(2022).Understanding core tungsten (W) transport and control in an improved high-performance fully non-inductive discharge on EAST.NUCLEAR FUSION,62. |
| MLA | Shi, Shengyu,et al."Understanding core tungsten (W) transport and control in an improved high-performance fully non-inductive discharge on EAST".NUCLEAR FUSION 62(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
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