MHD Equilibrium Configuration Reconstructions for HL-2A Tokamak
The EFIT （Equilibrium Fitting） code is modified for the equilibrium configuration reconstruction in HL-2A. Signals from Langmuir probe （LP） at the divertor target plates are employed in the reconstruction of divertor configurations. The results show that discharge #2895 starts with a limiter configu...
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| Published in | Plasma science & technology Vol. 13; no. 4; pp. 424 - 430 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
IOP Publishing
01.08.2011
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1009-0630 |
| DOI | 10.1088/1009-0630/13/4/08 |
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| Abstract | The EFIT （Equilibrium Fitting） code is modified for the equilibrium configuration reconstruction in HL-2A. Signals from Langmuir probe （LP） at the divertor target plates are employed in the reconstruction of divertor configurations. The results show that discharge #2895 starts with a limiter configuration and develops gradually into a divertor configuration after t = 230 ms. This transition process is clearly demonstrated by the LP signals for the reconstruction. The profiles of plasma parameters such as safety factor q, pressure and current density as well as the evolution of major shape parameters of plasma, such as the boundary magnetic fluxes, the positions of both x-point and magnetic axis, are calculated from the reconstructed configurations. The possibility to apply the method to the swing of strike point on the target plate is discussed. |
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| AbstractList | The EFIT （Equilibrium Fitting） code is modified for the equilibrium configuration reconstruction in HL-2A. Signals from Langmuir probe （LP） at the divertor target plates are employed in the reconstruction of divertor configurations. The results show that discharge #2895 starts with a limiter configuration and develops gradually into a divertor configuration after t = 230 ms. This transition process is clearly demonstrated by the LP signals for the reconstruction. The profiles of plasma parameters such as safety factor q, pressure and current density as well as the evolution of major shape parameters of plasma, such as the boundary magnetic fluxes, the positions of both x-point and magnetic axis, are calculated from the reconstructed configurations. The possibility to apply the method to the swing of strike point on the target plate is discussed. |
| Author | 何志雄 董家齐 何宏达 蒋海滨 高喆 张锦华 |
| AuthorAffiliation | Southwestern Institute of Physics, Chengdu 610041, China Department of Engineering Physics, Tsinghua University, Beijing 100084, China Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310013, China |
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| Cites_doi | 10.1016/0010-4655(86)90058-5 10.1088/0029-5515/25/10/004 10.1088/0029-5515/45/10/S19 10.1016/0010-4655(76)90008-4 10.1088/1009-0630/4/2/002 10.1088/0029-5515/31/10/009 10.1063/1.872380 10.1088/0029-5515/30/6/006 10.13182/FST48-968 10.1088/0029-5515/25/11/007 10.1016/0021-9991(80)90020-0 10.1088/0029-5515/18/11/005 10.13182/FST93-A30118 |
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| Notes | equilibrium reconstruction, MHD equilibrium, LP signals, HL-2A tokamak 34-1187/TL The EFIT （Equilibrium Fitting） code is modified for the equilibrium configuration reconstruction in HL-2A. Signals from Langmuir probe （LP） at the divertor target plates are employed in the reconstruction of divertor configurations. The results show that discharge #2895 starts with a limiter configuration and develops gradually into a divertor configuration after t = 230 ms. This transition process is clearly demonstrated by the LP signals for the reconstruction. The profiles of plasma parameters such as safety factor q, pressure and current density as well as the evolution of major shape parameters of plasma, such as the boundary magnetic fluxes, the positions of both x-point and magnetic axis, are calculated from the reconstructed configurations. The possibility to apply the method to the swing of strike point on the target plate is discussed. HE Zhixiong, DONG Jiaqi , HE Hongda , JIANG Haibin , GAO Zhe , ZHANG Jinhua （1Southwestern Institute of Physics, Chengdu 610041, China ;2Department of Engineering Physics, Tsinghua University, Beijing 100084, China; 3Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310013, China） |
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| References | Lao L L (9) 1991; 31 Luo J R (10) 2002; 4 13 Lao L L (6) 1985; 25 Shafranov V D (12) 1966; 2 Dong J Q (1) 1993; 23 3 Lao L L (7) 1985; 25 Lao L L (8) 1990; 30 4 5 Yuan B S (16) 2004 Lao L L (11) 2005; 48 Dong J Q (2) 1989 Helton F J (14) 1978; 18 Liu Y (15) 2005; 45 |
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| SubjectTerms | MHD平衡 偏滤器靶板 安全系数 托卡马克 朗缪尔探针 等离子体参数 配置 |
| Title | MHD Equilibrium Configuration Reconstructions for HL-2A Tokamak |
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