-
The divertor detachment and heat flux control under high-confinement H-mode conditions in tokamaks represent critical physical challenges in current magnetic confinement fusion research. Understanding the impact of detachment on H-mode boundary transport physics, particularly its compatibility with core confinement, is central to resolving divertor detachment physics. In this study, experimental results on divertor detachment and core confinement compatibility in H-mode plasmas from the HL-2A tokamak are presented. On the OMFIT (Objective MHD Framework For Integrated Tasks) integrated modeling platform, a novel neural network-based fast integrated modeling method for the divertor target region has been developed, by integrating a new edge neural network module (Kun-Lun Neural Networks, KLNN) to enhance divertor, scrape-off-layer and edge pedestal fast prediction capability. For the first time, this method is applied to conduct integrated simulations of divertor detachment and core confinement compatibility in HL-2A discharge #39007 in highconfinement mode. The simulation results are validated against experimental measurements, which are consistent well with each other. Further analysis reveals that in HL-2A H-mode detachment scenarios: turbulent transport in the core region ( 0.1 <ρ≤ 0.5) with high poloidal wave numbers (($k_\theta \rho_s>1$) is dominated by ion temperature gradient (ITG) modes, while electron-driven turbulence prevails in the region (0.5 <ρ≤ 0.7). In the boundary region, electron turbulence dominates at low normalized poloidal wave numbers ($k_\theta \rho_s<2$), whereas ITG modes become predominant at higher wave numbers ($k_\theta \rho_s>2$), accompanied by minor electron turbulence contributions. The research results of this paper provide a certain foundation for integrated simulation and experimental verification in the study of core-edge coupling physics in tokamak devices and some insights for understanding of detachment-compatible H-mode scenarios in next-step fusion devices.
-
Keywords:
- tokamak /
- detachment /
- H mode /
- integrated simulation
-
[1] Sun Y W, Qiu Z Y, Wan B N, 2024Acta Phys. Sin. 73(17) 175202
[2] K Ida, T Fujita, 2018Plasma Phys. Control. Fusion 60 033001
[3] A W Leonard, 2018Plasma Phys. Control. Fusion 60 044001
[4] L Wang, L Wang, H Q Wang, D Eldon, Q P Yuan, S Ding, K D Li, A M Garofalo, X Z Gong, G S Xu, H Y Guo, K Wu, L Y Meng, J C Xu, J B Liu, M W Chen, B Zhang, Y M Duan, F Ding, Z S Yang, J P Qian, J Huang, Q L Ren, A W Leonard, M Fenstermacher, C Lasnier, J G Watkins, M W Shafer, J Barr, D Weisberg, J McClenaghan, J Hanson, A Hyatt, T Osborne, D Thomas, D Humphreys, R J Buttery, G-N Luo, B J Xiao, B N Wan, J G Li, 2021Nature Communications 12 1365
[5] Meng L Y, 2022Ph.D. Dissertation (He Fei: University of Science and Technology of China)
[6] Wu T, Nie L, Yu Y, Gao J M, Li J Y, Ma H C, Wen J, Ke R, Wu N, Huang Z H, Liu L, Zheng D L, Yi K Y, Gao X Y, Wang W C, Cheng J, Yan L W, Cai L Z, Wang Z H, Xu M, 2023Plasma Sci. Technol. 25 015102
[7] Qin C C, Mou M L, Chen S Y, 2023Acta Phys. Sin. 72(4) 045203
[8] Long T, Ke R, Wu T, Gao J M, Cai Z, Wang Z H, Xu M, 2024Acta Phys. Sin. 73(8) 088901
[9] T C Luce, C D Challis, S Ide, E Joffrin, Y Kamada, P A Politzer, J Schweinzer, A C C Sips, J Stober, G Giruzzi, C E Kessel, M Murakami, Y-S Na, J M Park, A R Polevoi, R V Budny, J Citrin, J Garcia, N Hayashi, J Hobirk, B F Hudson, F Imbeaux, A Isayama, D C McDonald, T Nakano, N Oyama, V V Parail, T W Petrie, C C Petty, T Suzuki, M R Wade, the ITPA Integrated Operation Scenario Topical Group Members, the ASDEX-Upgrade Team, the DIII-D Team, JET EFDA Contributors and the JT-60U Team, 2014Nucl. Fusion 54 013015
[10] F Imbeaux, S D Pinches, J B Lister, Y Buravand, T Casper, B Duval, B Guillerminet, M Hosokawa, W Houlberg, P Huynh, S H Kim, G Manduchi, M Owsiak, B Palak, M Plociennik, G Rouault, O Sauter, P Strand, 2015Nucl. Fusion 55 123006
[11] O Meneghini, S P Smith, L L Lao, O Izacard, Q Ren, J M Park, J Candy, Z Wang, C J Luna, V A Izzo, B A Grierson, P B Snyder, C Holland, J Penna, G Lu, P Raum, A McCubbin, D M Orlov, E A Belli, N M Ferraro, R Prater, T H Osborne, A D Turnbull, G M Staebler, the ATOM Team, 2015Nucl. Fusion 55 083008
[12] Zeng J X, Song Y T, Huang X Y, 2013 Plasma Sci. Technol. 15(2) 152
[13] Luo Y M, Wang Z H, Chen J L, 2022Acta Phys. Sin. 71(7) 075201
[14] Luo Y M, 2022Master's Dissertation (ChenDu: Southwestern Institute of Physics) (in Chinese) [罗一鸣2022硕士学位论文(成都: 核工业西南物理研究院)]
[15] John H S, Taylor T S, Lin-Liu Y R, Turnbull A D, 1994Plasma Phys. Controlled Fusion 3 603
[16] Lao L L, John H S, Stambaugh R D, Kellman A G, Pfeiffer W, 1985Nucl. Fusion 25 1421
[17] Pan C, Staebler G M, Lao L L, Garofalo A M, Gong X, Ren Q, Smith S P, 2017Nucl. Fusion 57036018
[18] Pankin A, McCune D, Andre R, Bateman G, Kritz A, 2004Computer Physics Communications 159157
[19] C Yang, P T Bonoli, J C Wright, B J Ding, R Parker, S Shiraiwa, M H Li, 2014Plasma Phys. Control. Fusion 56 125003
[20] Fan H, Chen S Y, Mou M L, Liu T Q, Zhang Y M, Tang C J, 2024Acta Phys. Sin. 73(9) 095204
[21] Kritz A H, Hsuan H, Goldfinger R C, 1982Heating in Toroidal Plasmas 83 008980
[22] M N A Beurskens, T H Osborne, P A Schneider, E Wolfrum, L Frassinetti, R Groebner, P Lomas, I Nunes, S Saarelma, R Scannell, P B Snyder, D Zarzoso, I Balboa, B Bray, M Brix, J Flanagan, C Giroud, E Giovannozzi, M Kempenaars, A Loarte, E de la Luna, G Maddison, C F Maggi, D McDonald, R Pasqualotto, G Saibene, R Sartori, Emilia R Solano, M Walsh, L Zabeo, The DIII-D Team, The ASDEX Upgrade Team, JET-EFDA Contributors, 2011Phys. Plasmas 18 056120
[23] M. Moscheni, M Wigram, H Wu, C Meineri, C Carati, E De Marchi, M Greenwald, P Innocente, B LaBombard, F Subba, R Zanino, 2025Nucl. Fusion 65 026025
[24] C Cowley, A Q Kuang, D Moulton, J D Lore, J Canik, M Umansky, M Wigram, S Ballinger, B Lipschultz, X Bonnin, 2023Plasma Phys. Control. Fusion 65 035011
[25] Liang J H, Liu S F, Wang H P 2022 Nuclear Fusion and Plasma Physics 42(S1) 164
[26] Liu Z J 2022Ph.D. Dissertation (HeFei: University of Science and Technology of China) (in Chinese) [刘自结2022博士学位论文(合肥: 中国科学技术大学)]
[27] Wang J X 2022Ph.D. Dissertation (HeFei: University of Science and Technology of China) (in Chinese) [汪金鑫2022博士学位论文(合肥: 中国科学技术大学)]
[28] Zhu X B, Xia F, Yang Z, 2024Nuclear Fusion and Plasma Physics 44(02) 149
[29] J E Kinsey, G M Staebler, J Candy, R E Waltz, R V Budny, 2011Nucl. Fusion 51(8) 083001
[30] G M Staebler, J Candy, R E Waltz, J E Kinsey, W M Solomon, 2013Phys. Rev. Lett. 110 055003
[31] Waltz R E, Staebler G M, Dorland W, Hammett G W, Kotschenreuther M, Konings J A, 1997Phys. Plasmas 4(7) 2482
[32] H S Bosch, G M Hale, 1992 Nucl. Fusion 32(4) 611
[33] M Marin, Y Camenen, C Bourdelle, F J Casson, R Coosemans, L Garzott, the TCV Team, 2025Nucl. Fusion 65 036015
[34] E A Belli, J Candy, 2012Plasma Phys. Control. Fusion 54 015015
[35] Perin M, Chandre C, Tassi E, 2016J. Phys. A: Math. Theor. 49305501
[36] Dudkovskaia A V, Connor J W, Dickinson D, Hill P, Imada K, Leigh S, Wilson H R, 2023Nucl. Fusion 63 126040
[37] Kates-Harbeck J, Svyatkovskiy A, Tang W, 2019Nature 568 526
[38] W M Tang, G Rewoldt, 1993Physics of Fluids B: Plasma Physics 5(7) 2451
[39] W M Tang, G Rewoldt, 1978Nucl. Fusion 18 1089
[40] Li H, 2021Ph.D. Dissertation (DaLian: Dalian University of Technology) (in Chinese) [李慧2021博士学位论文(大连: 大连理工大学)]
Metrics
- Abstract views: 158
- PDF Downloads: 4
- Cited By: 0
下载:
