A New Regime for Studying the High Bootstrap Current Fraction
Plasma
X. Gao1,2, A. Isayama1, Y. Kamada1, K. Ushigusa1, T. Fujita1, T. Suzuki1
1Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken 311-01, Japan
2Institute of Plasma Physics, Chinese Academy of Sciences, P.O.Box 1126, Hefei 230031
A New Regime for Studying the High Bootstrap Current Fraction
Plasma
X. Gao1,2;A. Isayama1;Y. Kamada1;K. Ushigusa1;T. Fujita1; T. Suzuki1
1Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken 311-01, Japan
2Institute of Plasma Physics, Chinese Academy of Sciences, P.O.Box 1126, Hefei 230031
Abstract： A new experimental regime has recently been studied for achieving high fraction of the bootstrap current in the JT-60U hydrogen discharges. The high poloidal beta (βp ～ 3.61) plasma was obtained by high-power neutral beam injection heating at very high edge safety factor (Ip = 0.3 MA, Bt = 3.65 T, qeff = 25 - 35) region, and the bootstrap current fraction (fBS) was about 40% using the ACCOME code calculation. It was observed that there were no magnetohydrodynamics instabilities to retard the increase of βp and fBS parameters in the new regime.
X. Gao;A. Isayama;Y. Kamada;K. Ushigusa;T. Fujita; T. Suzuki. A New Regime for Studying the High Bootstrap Current Fraction
Plasma[J]. 中国物理快报, 2001, 18(7): 931-932.
X. Gao, A. Isayama, Y. Kamada, K. Ushigusa, T. Fujita, T. Suzuki. A New Regime for Studying the High Bootstrap Current Fraction
Plasma. Chin. Phys. Lett., 2001, 18(7): 931-932.
YANG Qing-Wei;ZHOU Hang-Yu;FENG Bei-Bin;LIU Yi;PAN Yu-Dong;LI Wei;DUAN Xu-Ru;CHEN Wei;CUI Zheng-Ying;JI Xiao-Quan;DING Xuan-Tong;HL-A team. A New Criterion for Disruption Prediction on HL-2A[J]. 中国物理快报, 2006, 23(4): 891-894.
2001, Vol. 18 
