Estimate of the energy confinement time in ITER and DEMO based on analysis of the H-mode database

Journal Article · Thu Apr 01 00:00:00 EST 1993 · Plasma Physics Reports

OSTI ID:105329

Esipchuk, Yu V; Chudnovskii, A N

Results are presented from analysis of the database for {open_quotes}quiescent{close_quotes} (i.e., without ELM) H mode of confinement. It is shown that the only parameter (aside from a constant factor) in terms of which the scaling law must be modified for the H mode in comparison with that of the L mode is the dependence on the plasma elongation k = b/a. As a result of the analysis a power-law scaling is found for the quiescent H mode which can be written in the simple form {tau}{sub E}{sup HE} = 1.5 x {tau}{sub E}{sup IT-89-L} x k{sup 0.63}, where {tau}{sub E}{sup IT-89-L} is the ITER-89-L scaling for L mode. This new scaling law describes the experimental data better than previously obtained scaling laws for the H mode and can be recommended for estimating the confinement time in future tokamaks (ITER, DEMO). 7 refs., 11 figs., 3 tabs.

• OSTI ID: 105329
• Journal Information: Plasma Physics Reports, Vol. 19, Issue 4; Other Information: PBD: Apr 1993; TN: Translated from Fiz. Plazmy.; 19, 481-494(Apr 1993)
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
ITER TOKAMAK
CONFINEMENT
H-MODE PLASMA CONFINEMENT
SCALING LAWS