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Numerical investigation of threshold power by using the Shaing L-H transition model

R Hiwatari1, T Takizuka2, K C Shaing3, W A Houlberg4, H Shirai2 and Y Ogawa5

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We carry out transport simulations of the L-H transition by the Shaing L-H transition model based on ion orbit losses, and find that the time scale of the L-H transition and the time scale for development of the H-mode pedestal are consistent with experimental observations. We also compare the power threshold derived from the Shaing L-H transition model with L-H transition threshold power scaling laws. We find that the magnetic field, Bt, plasma density, ne, and plasma current, Ip, scaling can be reproduced.


PACS

52.25.Fi Transport properties

52.65.-y Plasma simulation

52.25.Gj Fluctuation and chaos phenomena

Subjects

Plasma physics

Dates

Issue 5A (May 2002)

Received 5 September 2001

Published 29 April 2002



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