W. Horton et al 2005 Nucl. Fusion 45 976 doi:10.1088/0029-5515/45/8/025
W. Horton1, H.V. Wong1, P.J. Morrison1, A. Wurm1, J.H. Kim1, J.C. Perez1, J. Pratt1, G.T. Hoang2, B.P. LeBlanc3 and R. Ball4
Show affiliationsElectron thermal fluxes are derived from the power balance for Tore Supra (TS) and NSTX discharges with centrally deposited fast wave electron heating. Measurements of the electron temperature and density profiles, combined with ray tracing computations of the power absorption profiles, allow detailed interpretation of the thermal flux versus temperature gradient. Evidence supporting the occurrence of electron temperature gradient turbulent transport in the two confinement devices is found. With control of the magnetic rotational transform profile and the heating power, internal transport barriers are created in TS and NSTX discharges. These partial transport barriers are argued to be a universal feature of transport equations in the presence of invariant tori that are intrinsic to non-monotonic rotational transforms in dynamical systems.
Issue 8 (August 2005)
Received 10 December 2004, accepted for publication 3 June 2005
Published 9 August 2005
W. Horton et al 2005 Nucl. Fusion 45 976
Vincent Bernard 2003 Meas. Sci. Technol. 14 1510
C Joachim et al 2002 Nanotechnology 13 330
G Rapenne et al 2006 J. Phys.: Condens. Matter 18 S1797
H. K. Eriksen et al 2007 ApJ 660 L81
Karl Schoenbach et al 2008 Plasma Sources Sci. Technol. 17 024010
Yuichi Togashi and Kunihiko Kaneko 2007 J. Phys.: Condens. Matter 19 065150
Charles R Doering et al 2007 J. Phys.: Condens. Matter 19 065145
Uwe C Täuber et al 2005 J. Phys. A: Math. Gen. 38 R79
Koji Hashimoto JHEP04(2000)023