An analysis of controlled detachment by seeding various impurity species in high performance scenarios on DIII-D and EAST

Autor: Joseph McClenaghan, David Weisberg, Adam McLean, Kedong Li, L. Wang, Huiqian Wang, J. Barr, Houyang Guo, J.G. Watkins, Xianzu Gong, Q.P. Yuan, A.M. Garofalo, David Eldon, Cameron Samuell, Aaro Järvinen, S. Ding

Publikováno v: Nuclear Materials and Energy, Vol 27, Iss, Pp 100963-(2021)
Eldon, D, Wang, H Q, Wang, L, Barr, J, Ding, S, Garofalo, A, Gong, X Z, Guo, H Y, Järvinen, A E, Li, K D, McClenaghan, J, McLean, A G, Samuell, C M, Watkins, J G, Weisberg, D & Yuan, Q P 2021, ' An analysis of controlled detachment by seeding various impurity species in high performance scenarios on DIII-D and EAST ', Nuclear Materials and Energy, vol. 27, 100963 . https://doi.org/10.1016/j.nme.2021.100963

Experiments at DIII-D and EAST have demonstrated simultaneous high confinement, divertor detachment, and active control of detachment level, all of which are required for ITER. Comparing detachment control via T e and J s a t , it appears that T e is

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9ff8bf39c800030d4b3b249aad1e8ff
https://cris.vtt.fi/en/publications/5343f35a-8402-4ea1-911c-e5d169dbcc49

Progress of Divertor Heat and Particle Flux Control in EAST for Advanced Steady-State Operation in the Last 10 Years

Autor: Damao Yao, H. L. Du, K. Wu, G. S. Xu, X. L. Zou, Y. Duan, M. W. Chen, S. Xu, Z. P. Luo, D. Z. Wang, A. Li, Zhongshi Yang, Longxi Chen, R. Ding, Xianzu Gong, T. Y. Xia, K. F. Gan, Jin-Yong Hu, Bin Zhang, X. Y. Qian, H. Si, Baonian Wan, L. Y. Meng, Xu Jiawen, Q. Li, S. Y. Dai, David Eldon, Fang Ding, Xufeng Liu, Y. Liang, Zhen Sun, Jiefeng Wu, Guang-Nan Luo, Xudong Zhang, Guizhong Zuo, Wang Linsen, H. Q. Wang, B. Cao, Lei Zhang, J. Z. Sun, Yange Zhang, J. B. Liu, Hongbin Ding, Y. W. Yu, A.M. Garofalo, Kai Li, Y. W. Sun, R. Maingi, C. F. Sang, Xiaogang Liu, Y. P. Chen, S. C. Liu, G. Z. Deng, Houyang Guo, M. N. Jia, Q. P. Yuan, Bingjia Xiao

Publikováno v: Journal of Fusion Energy. 40

Active control of the excessively high heat and particle fluxes on the divertor target plates is of fundamental importance to the steady state operation of tokamaks, especially for fusion reactors. A series of experiments have been carried out on thi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7d4e14d6b03e5e60b4742f71f0b45f6c
https://doi.org/10.1007/s10894-021-00290-9

Optimizing the Super H-mode pedestal to improve performance and facilitate divertor integration

Autor: Adam McLean, Theresa Wilks, A.E. Jaervinen, M. Knolker, Filippo Scotti, Tamsin Osborne, Florian Laggner, Xiang Jian, David Eldon, Carlos Paz-Soldan, W. M. Solomon, Todd Evans, Brian Grierson, Joseph McClenaghan, P. B. Snyder

Publikováno v: Knolker, M, Snyder, P B, Evans, T E, Wilks, T, Eldon, D, Grierson, B, Järvinen, A, Jian, X, Laggner, F, McClenaghan, J, McLean, A G, Osborne, T, Paz-Soldan, C, Scotti, F & Solomon, W 2020, ' Optimizing the Super H-mode pedestal to improve performance and facilitate divertor integration ', Physics of Plasmas, vol. 27, no. 10, 102506 . https://doi.org/10.1063/5.0011008

Access to Super H-mode is demonstrated for moderately shaped plasmas in agreement with EPED [Snyder et al., Phys. Plasmas 16, 056118 (2009)] predictions. In particular, Super H-mode is realized in a DIII-D shape that is accessible to the JET tokamak.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cddf8a8ec58738343f305cd3051ff122
https://doi.org/10.1063/5.0011008

Progress in DIII-D towards validating divertor power exhaust predictions

Autor: S.L. Allen, Huiqian Wang, A.E. Jaervinen, Anthony Leonard, T.D. Rognlien, Adam McLean, David Eldon, M. Groth, C.J. Lasnier, J.G. Watkins, M.E. Fenstermacher, D. N. Hill, Cameron Samuell, G.D. Porter, Auna Moser

Publikováno v: Järvinen, A, Allen, S L, Eldon, D, Fenstermacher, M E, Groth, M, Hill, D N, Lasnier, C J, Leonard, A W, McLean, A G, Moser, A L, Porter, G D, Rognlien, T D, Samuell, C M, Wang, H Q & Watkins, J G 2020, ' Progress in DIII-D towards validating divertor power exhaust predictions ', Nuclear Fusion, vol. 60, no. 5, 056021 . https://doi.org/10.1088/1741-4326/ab7f5c

UEDGE simulations highlight the role of cross-field drifts on the onset of detached conditions, and new calibrated divertor vacuum ultra violet (VUV) spectroscopy is used to challenge the predictions of radiative constituents in these simulations. UE

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1981f118147bd04c6b9530c1848dde55
https://cris.vtt.fi/en/publications/7a378a6f-ef4c-442a-9da1-81153c6ea23d

Impurity leakage and radiative cooling in the first nitrogen and neon seeding study in the closed DIII-D SAS configuration

Autor: Adam McLean, L. Casali, David Eldon, Anthony Leonard, J. Ren, Brian Grierson, Tom Osborne

Publikováno v: Nuclear Fusion. 62:026021

A comparative study of nitrogen versus neon has been carried out to analyze the impact of the two radiative species on power dissipation, SOL impurity distribution, divertor and pedestal characteristics. The experimental results show that N remains c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::10aa8e43d5d6fc249704128288d8d967
https://doi.org/10.1088/1741-4326/ac3e84