| Bibliographic Citation | |
| Full Text |  3 Mb |
|---|---|
| DOI | 10.2172/836089 |
| Title | Observation of Energetic Particle Driven Modes Relevant to Advanced Tokamak Regimes |
| Creator/Author | R. Nazikian ; B. Alper ; H.L. Berk ; D. Borba ; C. Boswell ; R.V. Budny ; K.H. Burrell ; C.Z. Cheng ; E.J. Doyle ; E. Edlund ; R.J. Fonck ; A. Fukuyama ; N.N. Gorelenkov ; C.M. Greenfield ; D.J. Gupta ; M. Ishikawa ; R.J. Jayakumar ; G.J. Kramer ; Y. Kusama ; R.J. La Haye ; G.R. McKee ; W.A. Peebles ; S.D. Pinches ; M. Porkolab ; J. Rapp ; T.L. Rhodes ; S.E. Sharapov ; K. Shinohara ; J.A. Snipes ; W.M. Solomon ; E.J. Strait ; M. Takechi ; M.A. Van Zeeland ; W.P. West ; K.L. Wong ; S. Wukitch ; L. Zeng |
| Publication Date | 2004 Oct 21 |
| OSTI Identifier | OSTI ID: 836089 |
| Report Number(s) | PPPL-4015 |
| DOE Contract Number | AC02-76CH03073 |
| DOI | 10.2172/836089 |
| Other Number(s) | TRN: US200503%%337 |
| Resource Type | Technical Report |
| Resource Relation | Other Information: PBD: 21 Oct 2004 |
| Coverage | Topical |
| Research Org | Princeton Plasma Physics Lab., Princeton, NJ (US) |
| Sponsoring Org | USDOE Office of Science (SC) (US) |
| Subject | 22 GENERAL STUDIES OF NUCLEAR REACTORS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; FLUCTUATIONS; MAGNETIC PROBES; OSCILLATIONS; TEST REACTORS; VELOCITY |
| Related Subject | ALFVEN WAVES; ALPHA PARTICLES; MHD INSTABILITY; MICROWAVES |
| Description/Abstract | Measurements of high-frequency oscillations in JET [Joint European Torus], JT-60U, Alcator C-Mod, DIII-D, and TFTR [Tokamak Fusion Test Reactor] plasmas are contributing to a new understanding of fast ion-driven instabilities relevant to Advanced Tokamak (AT) regimes. A model based on the transition from a cylindrical-like frequency-chirping mode to the Toroidal Alfven Eigenmode (TAE) has successfully encompassed many of the characteristics seen in experiments. In a surprising development, the use of internal density fluctuation diagnostics has revealed many more modes than has been detected on edge magnetic probes. A corollary discovery is the observation of modes excited by fast particles traveling well below the Alfven velocity. These observations open up new opportunities for investigating a ''sea of Alfven Eigenmodes'' in present-scale experiments, and highlight the need for core fluctuation and fast ion measurements in a future burning-plasma experiment. |
| Country of Publication | United States |
| Language | English |
| Format | Medium: ED; Size: 3.0 MB pages |
| Availability | INIS; OSTI as DE00836089 To purchase this media from NTIS, click here |
| System Entry Date | 2008 Feb 05 |
| Document Discussions | |
Top | |
Last Updated: 11/20/2009