Effects of temperature ratio on JET transport in hot ion and hot electron regimes
Two series of JET shots, one on hot ion shots and one on hot electron shots, have been analysed in order to improve the understanding of how the temperature ratio T(e)/T(i) influences the performance. Comparisons are also made with ITER simulations which are in the hot electron regime. The temperature ratio has been varied between different shots, in partly interpretative simulations of one shot and locally. The effect of the variation of the temperature ratio depends strongly on how it is done but can also be different in different types of shots. In general, however, an increased electron heating deteriorates confinement rather strongly. This is the situation for increasing the alpha power in ITER. ITER simulations show, however, that the effect is not dramatic.
Bibliographic Reference: An article published in: Plasma Physics and Controlled Fusion47 (2005), pp.441-449
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://dx.doi.org/10.1088/0741-3335/47/3/003
Record Number: 200719074 / Last updated on: 2007-04-11
Original language: en
Available languages: en