Differential phase reflectometry for edge profile measurements on TFTR [electronic resource].
- Published:
- Washington, D.C. : United States. Dept. of Energy, 1994.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description:
- 12 pages : digital, PDF file
- Additional Creators:
- Oak Ridge National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Summary:
- Edge electron density profile measurements, including the scrape-off layer, have been made during ICRF heating with the two-frequency differential phase reflectometer installed in an ICRF antenna on TFTR. This system probes the plasma using the extraordinary mode with two signals swept from 90 to 118 GHz while maintaining a fixed difference frequency of 125 MHz. The extraordinary mode is used to obtain density profiles in the range of 1 × 10¹¹ to 3 × 10¹³ cm{sup −3} in high-field (4.5- to 4.9-T) full size (R₀ = 2.62 m, a = .96 m) TFTR plasmas. The reflectometer launcher is located in an ICRF antenna and views the plasma through a small penetration in the center of the Faraday shield. A 26 m long overmoded waveguide run connects the launcher to the reflectometer microwave electronics. Profile measurements made with this reflectometer system will be presented along with a discussion of the characteristics of this differential phase reflectometer and data analysis.
- Report Numbers:
- E 1.99:conf-940552--9
conf-940552--9 - Subject(s):
- Other Subject(s):
- Note:
- Published through SciTech Connect.
06/01/1994.
"conf-940552--9"
"DE94013837"
10. topical conference on high-temperature plasma diagnostics,Rochester, NY (United States),8-12 May 1994.
Wilson, J.R.; Hanson, G.R.; Bigelow, T.S.; Murakami, M.; Wilgen, J.B.; Rasmussen, D.A.; England, A.C.; Collazo, I. - Funding Information:
- AC05-84OR21400
View MARC record | catkey: 14744437