Phase-locking of magnetic islands diagnosed by ECE-imaging
Journal Article
·
· Review of Scientific Instruments
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Univ. of California, Davis, CA (United States)
- Univ. of Colorado, Boulder, CO (United States)
- Dutch Inst. for Fundamental Energy Research (Netherlands)
Millimeter-wave imaging diagnostics identify phase-locking and the satisfaction of 3-wave coupling selection criteria amongst multiple magnetic island chains by providing a localized, internal measurement of the 2D power spectral density, S ω, kpol ( ) . In high-confinement tokamak discharges, these interactions impact both plasma rotation and tearing stability. Nonlinear coupling amongst neoclassical tearing modes (NTMs) of different n-number, with islands not satisfying the poloidal mode number selection criterion m, m ', m - m ' , contributes to a reduction in core rotation and flow shear in the vicinity of the modes.
- Research Organization:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); General Atomics, San Diego, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- Grant/Contract Number:
- AC02-09CH11466; FC02-04ER54698
- OSTI ID:
- 1172887
- Alternate ID(s):
- OSTI ID: 1367160
- Report Number(s):
- PPPL-5047; RSINAK; TRN: US1600660
- Journal Information:
- Review of Scientific Instruments, Vol. 85, Issue 11; Conference: 20th Topical Conference on High-Temperature Plasma Diagnostics, Atlanta, GA (United States), Jun 2014; Related Information: © 2014 AIP Publishing LLC; ISSN 0034-6748
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 5 works
Citation information provided by
Web of Science
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