Collisionless fast electron losses in magnetic toroidal ripples during lower hybrid current drive in Tore Supra
A consistent estimation of the losses of collisionless fast electrons driven by the lower hybrid wave and trapped in magnetic ripples in the Tokamak Tore Supra [Equipe TORE SUPRA, in Proceedings of the 15th Conference on Plasma Physics and Controlled Nuclear Fusion Research, Seville (International Atomic Energy Agency, Vienna, 1995), Vol. 1, IAEA-CN-60/A1-5, p. 105], is carried out using a two-dimensional relativistic bounce-averaged Fokker-Planck solver. A reasonable agreement is found between the simulations and the experimentally observed results obtained by the diagnostic named DRIPPLE (Diagnostic-Ripple) dedicated to magnetic ripple loss measurements. The analysis shows that the radial profile of the ripple loss current is dominated by the shape of the super-trapped domain in momentum space, and is therefore weakly dependent on the lower hybrid wave power absorption.
Bibliographic Reference: An article published in: Physics of Plasmas - Volume 9, Issue 11, (November 2002), pp.4615-4622
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://dx.doi.org/10.1063/1.1511195
Record Number: 200316023 / Last updated on: 2003-03-06
Original language: en
Available languages: en