Tokamak Edge Profile Analysis Employing Bayesian Statistics

Temperature measurements in tokamak edge plasmas suffer frequently from outliers of unknown origin. Such outliers have an important unwanted influence on the estimation of parameters for edge temperature model functions in conventional least squares fits. Bayesian probability theory is applied to deal with such outliers and develop a robust procedure which performs highly satisfactorily.

[1]  D. S. Sivia,et al.  Data Analysis , 1996, Encyclopedia of Evolutionary Psychological Science.

[2]  M. Keilhacker.  Plasma Boundary Layer in Limiter and Divertor Tokamaks , 1982 .

[3]  P. C. Stangeby,et al.  Plasma boundary phenomena in tokamaks , 1990 .

[4]  E. Vold.  Multidimensional and Multifluid Plasma Edge Modelling: Status and New Directions , 1992 .

[5]  D. P. Coster,et al.  ASDEX-Upgrade edge transport scalings from the two-dimensional interpretative code B2.5-I , 2001 .

[6]  K OrJ.  Numerical Bayesian methods applied to signal processing , 1996 .

[7]  W. Treutterer,et al.  Effect of Plasma Shape Variation on ELMs and H-Mode Pedestal Properties in ASDEX Upgrade , 2000 .

[8]  Sylvia Richardson,et al.  Markov Chain Monte Carlo in Practice , 1997 .

[9]  W. Linden,et al.  Maximum Entropy and Bayesian Methods. Proceedings of the 18. International Workshop on Maximum Entropy and Bayesian Methods of Statistical Analysis , 1999 .

[10]  R. Chodura.  Kinetic Effects in the Scrape off Layer , 1992 .

[11]  B. Scott,et al.  Three-dimensional computation of collisional drift wave turbulence and transport in tokamak geometry , 1997 .

[12]  B. Kurzan,et al.  Improvements in the evaluation of Thomson scattering data on ASDEX upgrade , 2001 .

[13]  Marvin H. J. Guber.  Bayesian Spectrum Analysis and Parameter Estimation , 1988 .

[14]  W. Schneider,et al.  Automatic Evaluation of Edge Transport Coefficients with B2-SOLPS5.0 , 2000 .

[15]  J. Neuhauser,et al.  Comparison of scrape-off layer behaviour between DIV-I and DIV-II operations on ASDEX-Upgrade , 1999 .