Rotation and Particle Loss in Tore Supra
Authors: R.B. White, F.W. Perkins, X. Garbet, C. Bourdelle, V. Basiuk, and L.G. Eriksson
Date of PPPL Report: June 2000
Presented at: the 27th European Physical Society's (EPS) Conference on Controlled Fusion and Plasma Physics, June 12-16, 2000, Budapest, Hungary. A "Provisional Collection of Submitted Contributions" can be found at the following web site: http://www.eps2000.kfki.hu (active as of August 16, 2000). Papers are in PDF format.
Although plasma heating with ICRF imparts negligible angular momentum to a tokamak plasma, the high energy particles give significant torque to the plasma through diamagnetic effects. This effect has been directly modeled through guiding center simulations. It is found that heating in Tore Supra, with the location of the resonance surface on the high field side of the magnetic axis, can produce negative central rotation of up to 40 km/sec [1, 2]. Particle loss also contributes to negative rotation, but this is not the dominant effect in most discharges. In this work we examine the effect of collisions and strong plasma rotation on the loss of high energy particles.