Overview of recent HL-2A experiments

X. R. Duan, Yi Liu, M. Xu, L. W. Yan, Y. Xu, X. M. Song, J. Q. Dong, X. T. Ding, L. Y. Chen, B. Lu, D. Q. Liu, J. Rao, W. M. Xuan, Q. W. Yang, G. Y. Zheng, X. L. Zou, Y. Q. Liu, W. L. Zhong, K. J. Zhao, X. Q. JiW. C. Mao, Q. M. Wang, Q. Li, J. Y. Cao, Z. Cao, G. J. Lei, J. H. Zhang, X. D. Li, X. Y. Bai, J. Cheng, W. Chen, Z. Y. Cui, L. Delpech, P. H. Diamond, Y. B. Dong, A. Ekedahl, T. Hoang, Y. Huang, K. Ida, K. Itoh, S. I. Itoh, M. Isobe, S. Inagaki, D. Mazon, S. Morita, Y. Peysson, Z. B. Shi, X. G. Wang, G. L. Xiao, D. L. Yu, L. M. Yu, Y. P. Zhang, Y. Zhou, C. H. Cui, B. B. Feng, M. Huang, Y. G. Li, B. Li, G. S. Li, H. J. Li, Qing Li, J. F. Peng, Y. Q. Wang, B. S. Yuan, Yong Liu

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Since the last Fusion Energy Conference, significant progress has been made in the following areas. The first high coupling efficiency low-hybrid current drive (LHCD) with a passive-active multi-junction (PAM) antenna was successfully demonstrated in the H-mode on the HL-2A tokamak. Double critical impurity gradients of electromagnetic turbulence were observed in H-mode plasmas. Various ELM mitigation techniques have been investigated, including supersonic molecular beam injection (SMBI), impurity seeding, resonant magnetic perturbation (RMP) and low-hybrid wave (LHW). The ion internal transport barrier was observed in neutral beam injection (NBI) heated plasmas. Neoclassical tearing modes (NTMs) driven by the transient perturbation of local electron temperature during non-local thermal transport events have been observed, and a new type of non-local transport triggered by the ion fishbone was found. A long-lasting runaway electron plateau was achieved after argon injection and the runaway current was successfully suppressed by SMBI. It was found that low-n Alfvénic ion temperature gradient (AITG) modes can be destabilized in ohmic plasmas, even with weak magnetic shear and low-pressure gradients. For the first time, the synchronization of geodesic acoustic mode (GAM) and magnetic fluctuations was observed in edge plasmas, revealing frequency entrainment and phase lock. The spatiotemporal features of zonal flows were also studied using multi-channel correlation Doppler reflectometers.

Original languageEnglish
Article number102013
JournalNuclear Fusion
Volume57
Issue number10
DOIs
Publication statusPublished - Jun 28 2017

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beam injection
molecular beams
perturbation
impurities
reflectometers
neutral beams
entrainment
plasma frequencies
inoculation
ion temperature
pressure gradients
plateaus
synchronism
temperature gradients
ions
antennas
low pressure
fusion
turbulence
argon

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Duan, X. R., Liu, Y., Xu, M., Yan, L. W., Xu, Y., Song, X. M., ... Liu, Y. (2017). Overview of recent HL-2A experiments. Nuclear Fusion, 57(10), [102013]. https://doi.org/10.1088/1741-4326/aa6a72

Overview of recent HL-2A experiments. / Duan, X. R.; Liu, Yi; Xu, M.; Yan, L. W.; Xu, Y.; Song, X. M.; Dong, J. Q.; Ding, X. T.; Chen, L. Y.; Lu, B.; Liu, D. Q.; Rao, J.; Xuan, W. M.; Yang, Q. W.; Zheng, G. Y.; Zou, X. L.; Liu, Y. Q.; Zhong, W. L.; Zhao, K. J.; Ji, X. Q.; Mao, W. C.; Wang, Q. M.; Li, Q.; Cao, J. Y.; Cao, Z.; Lei, G. J.; Zhang, J. H.; Li, X. D.; Bai, X. Y.; Cheng, J.; Chen, W.; Cui, Z. Y.; Delpech, L.; Diamond, P. H.; Dong, Y. B.; Ekedahl, A.; Hoang, T.; Huang, Y.; Ida, K.; Itoh, K.; Itoh, S. I.; Isobe, M.; Inagaki, S.; Mazon, D.; Morita, S.; Peysson, Y.; Shi, Z. B.; Wang, X. G.; Xiao, G. L.; Yu, D. L.; Yu, L. M.; Zhang, Y. P.; Zhou, Y.; Cui, C. H.; Feng, B. B.; Huang, M.; Li, Y. G.; Li, B.; Li, G. S.; Li, H. J.; Li, Qing; Peng, J. F.; Wang, Y. Q.; Yuan, B. S.; Liu, Yong.

In: Nuclear Fusion, Vol. 57, No. 10, 102013, 28.06.2017.

Research output: Contribution to journalArticle

Duan, XR, Liu, Y, Xu, M, Yan, LW, Xu, Y, Song, XM, Dong, JQ, Ding, XT, Chen, LY, Lu, B, Liu, DQ, Rao, J, Xuan, WM, Yang, QW, Zheng, GY, Zou, XL, Liu, YQ, Zhong, WL, Zhao, KJ, Ji, XQ, Mao, WC, Wang, QM, Li, Q, Cao, JY, Cao, Z, Lei, GJ, Zhang, JH, Li, XD, Bai, XY, Cheng, J, Chen, W, Cui, ZY, Delpech, L, Diamond, PH, Dong, YB, Ekedahl, A, Hoang, T, Huang, Y, Ida, K, Itoh, K, Itoh, SI, Isobe, M, Inagaki, S, Mazon, D, Morita, S, Peysson, Y, Shi, ZB, Wang, XG, Xiao, GL, Yu, DL, Yu, LM, Zhang, YP, Zhou, Y, Cui, CH, Feng, BB, Huang, M, Li, YG, Li, B, Li, GS, Li, HJ, Li, Q, Peng, JF, Wang, YQ, Yuan, BS & Liu, Y 2017, 'Overview of recent HL-2A experiments', Nuclear Fusion, vol. 57, no. 10, 102013. https://doi.org/10.1088/1741-4326/aa6a72
Duan XR, Liu Y, Xu M, Yan LW, Xu Y, Song XM et al. Overview of recent HL-2A experiments. Nuclear Fusion. 2017 Jun 28;57(10). 102013. https://doi.org/10.1088/1741-4326/aa6a72
Duan, X. R. ; Liu, Yi ; Xu, M. ; Yan, L. W. ; Xu, Y. ; Song, X. M. ; Dong, J. Q. ; Ding, X. T. ; Chen, L. Y. ; Lu, B. ; Liu, D. Q. ; Rao, J. ; Xuan, W. M. ; Yang, Q. W. ; Zheng, G. Y. ; Zou, X. L. ; Liu, Y. Q. ; Zhong, W. L. ; Zhao, K. J. ; Ji, X. Q. ; Mao, W. C. ; Wang, Q. M. ; Li, Q. ; Cao, J. Y. ; Cao, Z. ; Lei, G. J. ; Zhang, J. H. ; Li, X. D. ; Bai, X. Y. ; Cheng, J. ; Chen, W. ; Cui, Z. Y. ; Delpech, L. ; Diamond, P. H. ; Dong, Y. B. ; Ekedahl, A. ; Hoang, T. ; Huang, Y. ; Ida, K. ; Itoh, K. ; Itoh, S. I. ; Isobe, M. ; Inagaki, S. ; Mazon, D. ; Morita, S. ; Peysson, Y. ; Shi, Z. B. ; Wang, X. G. ; Xiao, G. L. ; Yu, D. L. ; Yu, L. M. ; Zhang, Y. P. ; Zhou, Y. ; Cui, C. H. ; Feng, B. B. ; Huang, M. ; Li, Y. G. ; Li, B. ; Li, G. S. ; Li, H. J. ; Li, Qing ; Peng, J. F. ; Wang, Y. Q. ; Yuan, B. S. ; Liu, Yong. / Overview of recent HL-2A experiments. In: Nuclear Fusion. 2017 ; Vol. 57, No. 10.
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T1 - Overview of recent HL-2A experiments

AU - Duan, X. R.

AU - Liu, Yi

AU - Xu, M.

AU - Yan, L. W.

AU - Xu, Y.

AU - Song, X. M.

AU - Dong, J. Q.

AU - Ding, X. T.

AU - Chen, L. Y.

AU - Lu, B.

AU - Liu, D. Q.

AU - Rao, J.

AU - Xuan, W. M.

AU - Yang, Q. W.

AU - Zheng, G. Y.

AU - Zou, X. L.

AU - Liu, Y. Q.

AU - Zhong, W. L.

AU - Zhao, K. J.

AU - Ji, X. Q.

AU - Mao, W. C.

AU - Wang, Q. M.

AU - Li, Q.

AU - Cao, J. Y.

AU - Cao, Z.

AU - Lei, G. J.

AU - Zhang, J. H.

AU - Li, X. D.

AU - Bai, X. Y.

AU - Cheng, J.

AU - Chen, W.

AU - Cui, Z. Y.

AU - Delpech, L.

AU - Diamond, P. H.

AU - Dong, Y. B.

AU - Ekedahl, A.

AU - Hoang, T.

AU - Huang, Y.

AU - Ida, K.

AU - Itoh, K.

AU - Itoh, S. I.

AU - Isobe, M.

AU - Inagaki, S.

AU - Mazon, D.

AU - Morita, S.

AU - Peysson, Y.

AU - Shi, Z. B.

AU - Wang, X. G.

AU - Xiao, G. L.

AU - Yu, D. L.

AU - Yu, L. M.

AU - Zhang, Y. P.

AU - Zhou, Y.

AU - Cui, C. H.

AU - Feng, B. B.

AU - Huang, M.

AU - Li, Y. G.

AU - Li, B.

AU - Li, G. S.

AU - Li, H. J.

AU - Li, Qing

AU - Peng, J. F.

AU - Wang, Y. Q.

AU - Yuan, B. S.

AU - Liu, Yong

PY - 2017/6/28

Y1 - 2017/6/28

N2 - Since the last Fusion Energy Conference, significant progress has been made in the following areas. The first high coupling efficiency low-hybrid current drive (LHCD) with a passive-active multi-junction (PAM) antenna was successfully demonstrated in the H-mode on the HL-2A tokamak. Double critical impurity gradients of electromagnetic turbulence were observed in H-mode plasmas. Various ELM mitigation techniques have been investigated, including supersonic molecular beam injection (SMBI), impurity seeding, resonant magnetic perturbation (RMP) and low-hybrid wave (LHW). The ion internal transport barrier was observed in neutral beam injection (NBI) heated plasmas. Neoclassical tearing modes (NTMs) driven by the transient perturbation of local electron temperature during non-local thermal transport events have been observed, and a new type of non-local transport triggered by the ion fishbone was found. A long-lasting runaway electron plateau was achieved after argon injection and the runaway current was successfully suppressed by SMBI. It was found that low-n Alfvénic ion temperature gradient (AITG) modes can be destabilized in ohmic plasmas, even with weak magnetic shear and low-pressure gradients. For the first time, the synchronization of geodesic acoustic mode (GAM) and magnetic fluctuations was observed in edge plasmas, revealing frequency entrainment and phase lock. The spatiotemporal features of zonal flows were also studied using multi-channel correlation Doppler reflectometers.

AB - Since the last Fusion Energy Conference, significant progress has been made in the following areas. The first high coupling efficiency low-hybrid current drive (LHCD) with a passive-active multi-junction (PAM) antenna was successfully demonstrated in the H-mode on the HL-2A tokamak. Double critical impurity gradients of electromagnetic turbulence were observed in H-mode plasmas. Various ELM mitigation techniques have been investigated, including supersonic molecular beam injection (SMBI), impurity seeding, resonant magnetic perturbation (RMP) and low-hybrid wave (LHW). The ion internal transport barrier was observed in neutral beam injection (NBI) heated plasmas. Neoclassical tearing modes (NTMs) driven by the transient perturbation of local electron temperature during non-local thermal transport events have been observed, and a new type of non-local transport triggered by the ion fishbone was found. A long-lasting runaway electron plateau was achieved after argon injection and the runaway current was successfully suppressed by SMBI. It was found that low-n Alfvénic ion temperature gradient (AITG) modes can be destabilized in ohmic plasmas, even with weak magnetic shear and low-pressure gradients. For the first time, the synchronization of geodesic acoustic mode (GAM) and magnetic fluctuations was observed in edge plasmas, revealing frequency entrainment and phase lock. The spatiotemporal features of zonal flows were also studied using multi-channel correlation Doppler reflectometers.

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