| Project/Area Number |
24656561
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Nuclear fusion studies
|
|---|
| Research Institution | National Institute for Fusion Science |
|---|
Principal Investigator |
OSAKABE Masaki 核融合科学研究所, ヘリカル研究部, 教授 (90280601)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
IDO Takeshi 核融合科学研究所, へリカル研究部, 准教 授 (50332185)
TOKUZAWA Tokihiko 核融合科学研究所, へリカル研究部, 准教 授 (90311208)
SHIMIZU Akihiro 核融合科学研究所, へリカル研究部, 助教 (00390633)
|
|---|
| Project Period (FY) |
2012-04-01 – 2014-03-31
|
| Project Status |
Completed (Fiscal Year 2013)
|
| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
|
|---|
| Keywords | GAM / 高速イオン励起不安定性 / イオン異常加熱 / αチャンネリング / fast ion / alpha channeling |
|---|
| Research Abstract |
On the Large Helical Device, the excitation of energetic particle driven instability, whose toroidal mode number is zero, and the increase in ion temperature being associated with the activity of the instabilities is observed when energetic particle beams are injected to very low density micro-wave sustained plasmas. From a theoretical analysis based on experimental observation, the instability was evaluated to be Geodesic Acoustic Mode (GAM). From the correlation analysis between the activity of the mode and the ion temperature behaviors, it was concluded the anomalous heating of bulk-ions is the most probable mechanism to explain the increase in the ion temperatures.
|
