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Title | First demonstration of a traveling wave antenna in a tokamak and relevance to the JFT-2M combline |
Creator/Author | Phelps, D.A. ; Moeller, C.P. ; Ikezi, H. ; Chiu, S.C. |
Publication Date | 1995 Jun 01 |
OSTI Identifier | OSTI ID: 100031; Legacy ID: DE95015929 |
Report Number(s) | GA-A--22051; CONF-9505105--13 |
DOE Contract Number | AC03-89ER51114 |
Other Number(s) | Other: ON: DE95015929 |
Resource Type | Conference |
Resource Relation | Conference: 11. topical conference on radio frequency in plasmas, Palm Springs, CA (United States), 17-19 May 1995; Other Information: PBD: Jun 1995 |
Research Org | General Atomics, San Diego, CA (United States) |
Sponsoring Org | USDOE, Washington, DC (United States) |
Subject | 70 PLASMA PHYSICS AND FUSION; JFT-2M TOKAMAK; ANTENNAS; PLASMA; TOKAMAK DEVICES; TRAVELLING WAVES |
Description/Abstract | First observations of a traveling wave antenna (TWA) in a tokamak are reported. For a fractional bandwidth ({delta}{omega}/{omega}) of about 20%, TWA experiments using a four-element antenna in DIII-D showed less than 1% reflected power and excellent stability of the phase velocity of the launched wave -- even during giant ELMs. The power radiated into the plasma varied from about 40% during ELM-free H-mode to almost 90% during L-mode and ELMing H-mode. Theoretical modeling validated by these low power observations is used to predict the plasma load resistance of a high power combline being built for JFT-2M. |
Country of Publication | United States |
Language | English |
Format | Medium: P; Size: 4 p. |
Availability | INIS; OSTI as DE95015929 To purchase this media from NTIS, click here |
System Entry Date | 2008 Feb 04 |
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