The roles of electric field shear and Shafranov shift in sustaining high confinement in enhanced reversed shear plasmas on the TFTR tokamak
- Princeton Univ., NJ (United States). Princeton Plasma Physics Lab.
- Fusion Physics and Technology, Torrance, CA (United States); and others
The relaxation of core transport barriers in TFTR Enhanced Reversed Shear plasmas has been studied by varying the radial electric field using different applied torques from neutral beam injection. Transport rates and fluctuations remain low over a wide range of radial electric field shear, but increase when the local E x B shearing rates are driven below a threshold comparable to the fastest linear growth rates of the dominant instabilities. Shafranov-shift-induced stabilization alone is not able to sustain enhanced confinement.
- Research Organization:
- Princeton Univ., Princeton Plasma Physics Lab., NJ (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 304143
- Report Number(s):
- PPPL-3233; ON: DE97051921; TRN: 99:002004
- Resource Relation:
- Other Information: PBD: Feb 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Roles of Electric Field Shear and Shafranov Shift in Sustaining High Confinement in Enhanced Reversed Shear Plasmas on the TFTR Tokamak
Local transport barrier formation and relaxation in reverse-shear plasmas on the TFTR tokamak
Notched velocity profiles, radial electric field shear, and ion thermal confinement in TFTR supershots
Journal Article
·
Tue Apr 01 00:00:00 EST 1997
· Physical Review Letters
·
OSTI ID:304143
+18 more
Local transport barrier formation and relaxation in reverse-shear plasmas on the TFTR tokamak
Technical Report
·
Sat Feb 01 00:00:00 EST 1997
·
OSTI ID:304143
Notched velocity profiles, radial electric field shear, and ion thermal confinement in TFTR supershots
Conference
·
Tue Dec 31 00:00:00 EST 1996
·
OSTI ID:304143