Confidence contours for calibration of a theoretical transport model against a multitokamak database

J. Qiang, J. Kinsey, C. E. Singer

Research output: Contribution to journalArticlepeer-review

Abstract

A systematic statistical model has been used to calibrate the turbulence saturation coefficients in a theory based tokamak transport model. Confidence contours are used to assess the accuracy of calibration. From the confidence contours, it is seen that the ballooning branch coefficient of this model is empirically more uncertain than that for the drift wave branch. Sensitivity studies show that the estimators obtained here are relatively insensitive to the level of prior knowledge assumed about the accuracy of theory and experiment, but the confidence regions shrink with increasing prior knowledge. The calibrated transport model is used to predict the profiles of electron density and of electron temperature and ion temperature in a large tokamak plasma. This demonstrates the potential utility of the calibrated transport model.

Original languageEnglish (US)
Pages (from-to)1019-1029
Number of pages11
JournalNuclear Fusion
Volume36
Issue number8
DOIs
StatePublished - Aug 1 1996

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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