Plasma heating and improvement of lower hybrid current drive efficiency by electron cyclotron waves on EAST
نویسندگان
چکیده
The electron cyclotron (EC) system on EAST consists of four gyrotrons with a frequency 140 GHz (second harmonic the extraordinary mode), each which is expected to deliver maximum power 1.0 MW and be operated at 100-1000 s pulse length. Significant progress in long-pulse operation has been achieved recently, including duration up 1056 EC injected into plasma 0.55 310 1.6 (output by 3 gyrotrons). High temperature ( T e >12 keV) measured Thomson scattering was produced combination lower hybrid (LH) waves. It found that heating effect depends location greatly. By adjusting location, current profile can modified. As consequence increment resonance (ECRH), drive (LHCD) efficiency improved, benefiting for operation. In addition, synergy between LH observed steady-state EAST.
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ژورنال
عنوان ژورنال: Epj Web of Conferences
سال: 2023
ISSN: ['2101-6275', '2100-014X']
DOI: https://doi.org/10.1051/epjconf/202327702003