Third harmonic ICRF heating in LHD hydrogen experiments

被引：2

作者：

Kamio, S. ^{[1
]}

Seki, R. ^{[1
,2
]}

Seki, T. ^{[1
]}

Saito, K. ^{[1
]}

Kasahara, H. ^{[1
]}

Sakakibara, S. ^{[1
,2
]}

Nomura, G. ^{[1
]}

Mutoh, T. ^{[3
]}

机构：

[1] Natl Inst Nat Sci, Natl Inst Fus Sci, Toki, Gifu 5095292, Japan

[2] Grad Univ Adv Studies, SOKENDAI, Toki, Gifu 5095292, Japan

[3] Chubu Univ, Kasugai, Aichi 4878501, Japan

来源：

NUCLEAR FUSION | 2018年 / 58卷 / 12期

关键词：

ICRF; LHD; high beta; third harmonic; LARGE HELICAL DEVICE;

D O I：

10.1088/1741-4326/aadbb4

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The ion cyclotron range of frequencies (ICRF) heating power injection in the hydrogen experiment in LHD was demonstrated after the upgrade of ICRF antennas. The ICRF wave couples and accelerates the energetic particles injected by perpendicular-NBIs with 40 keV. The simulation by the MORH code shows the existence of energetic particles around the ICRF third harmonic resonance layers. As the result of ICRF heating power deposition, the beta value increased by 0.2% in absolute beta mainly due to the increased energetic particle content. The increase of energetic ions particularly around 60 keV, which should be accelerated by the ICRF heating, is observed. The ICRF heating efficiency was approximately 30%-50%, estimated from the break-in-slope analysis at the turn off timing of ICRF power from the stored energy measured by diamagnetic loops. This increase of the stored energy is mostly the contribution of the increased energetic particles. The heating efficiency increases as the density increases.

引用

页数：5

共 21 条

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