H-modes on Alcator C-Mod
H-modes on Alcator C-Mod
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DOI：
10.1088/0741-3335/38/8/005
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发表时间：
1996-08
影响因子：
2.2
通讯作者：
J. Snipes;A. Hubbard;D. Garnier;S. Golovato;R. Granetz;M. Greenwald;I. Hutchinson;J. Irby;B. LaBombard;E. Marmar;A. Niemczewski;P. O'Shea;M. Porkolab;P. Stek;Y. Takase;J. Terry;R. Watterson;S. Wolfe
中科院分区：
文献类型：
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作者：
J. Snipes;A. Hubbard;D. Garnier;S. Golovato;R. Granetz;M. Greenwald;I. Hutchinson;J. Irby;B. LaBombard;E. Marmar;A. Niemczewski;P. O'Shea;M. Porkolab;P. Stek;Y. Takase;J. Terry;R. Watterson;S. Wolfe
在Alcator C-Mod中，使用ICRF和仅使用欧姆加热而不使用硼化来实现H模式，从而改善了L模式以上的限制。ELM自由和ELMy H-模式获得的总输入功率从0.75到4.2兆瓦的范围内的密度（0.8）和环向场（3至8 T）。通常观察到III型ELM具有相干的高m和n前驱体振荡，频率为100 - 160 kHz。实现H模式所需的阈值功率随密度和环向场的增加而增加，与其他托卡马克的定标结果大致一致。的功率密度和密度倍环向场产品是一个数量级大于其他托卡马克，在ITER的预期值的范围内。L-H和H-L跃迁发生在几乎相同的边缘电子温度.一个低密度极限的H-模式被发现在约。还观察到约0.6 mTorr的高中面中性压力极限。
H-modes exhibiting improved confinement above the L-mode are achieved in Alcator C-Mod with ICRF and with ohmic heating alone without boronization. Both ELM-free and ELMy H-modes are obtained with total input power from 0.75 to 4.2 MW over a range of densities (0.8 to ) and toroidal fields (3 to 8 T). Type III ELMs are often observed to have coherent, high m and n precursor oscillations with frequencies of 100 - 160 kHz. The threshold power required to achieve the H-mode increases with density and toroidal field, in rough agreement with scalings derived from other tokamaks. The power densities and density times toroidal field products are an order of magnitude larger than in other tokamaks, in the range of values expected for ITER. The L - H and H - L transitions occur at approximately the same edge electron temperature. A low density limit to the H-mode is found at about . A high midplane neutral pressure limit of about 0.6 mTorr is also observed.