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Combined application of neutral injection, lower hybrid, and ion cyclotron resonance heating in ASDEX and synergetic effects

F Wagner, F X Soldner, K Steinmetz, G Becker, H S Bosch, H Brocken, G Dodel, A Eberhagen, D Eckhartt, G Fussmann1986年Plasma Physics and Controlled FusionIF 2.2出版社

Confinement properties of ASDEX discharges are studied when NI and ICRH or NI and LH were applied simultaneously. ICRH leads to a larger change in plasma energy content when applied together with NI. At high power the beta p-increases of NI and ICRH are additive corresponding to the total heating power. In the combination of NI and LH the beta p-increase is the same when NI is applied to inductively or non-inductively driven plasma current despite the different current profiles. The effect of sawteeth on central confinement is described in detail in ohmically and beam heated plasmas as is the suppression of sawteeth by LH. The suppression of sawteeth by LH in low qa beam heated plasmas leads to a substantial increase of beta p. The H-mode can be realized with NI under current drive conditions. ICRH can cause the H-transition in combination with NI. The H-mode, however, can also be realized with ICRH alone.

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ASDEXIon cyclotron heatingLower hybridCyclotron resonanceIon cyclotron resonance
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