Bayesian modelling of fusion diagnostics

被引:71
作者
Fischer, R
Dinklage, A
Pasch, E
机构
[1] EURATOM, Max Planck Inst Plasmaphys, Ctr Interdisciplinary Plasma Sci, D-85748 Garching, Germany
[2] EURATOM, Max Planck Inst Plasmaphys, D-17491 Greifswald, Germany
关键词
D O I
10.1088/0741-3335/45/7/304
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Integrated data analysis of fusion diagnostics is the combination of different, heterogeneous diagnostics in order to improve physics knowledge and reduce the uncertainties of results. One example is the validation of profiles of plasma quantities. Integration of different diagnostics requires systematic and formalized error analysis for all uncertainties involved. The Bayesian probability theory (BPT) allows a systematic combination of all information entering the measurement descriptive model that considers all uncertainties of the measured data, calibration measurements, physical model parameters and measurement nuisance parameters. A sensitivity analysis of model parameters allows crucial uncertainties to be found, which has an impact on both diagnostic improvement and design. The systematic statistical modelling within the BPT is used for reconstructing electron density and electron temperature profiles from Thomson scattering data from the Wendelstein 7-AS stellarator. The inclusion of different diagnostics and first-principle information is discussed in terms of improvements.
引用
收藏
页码:1095 / 1111
页数:17
相关论文
共 14 条
[1]  
[Anonymous], 1992, SMR
[2]   Methods for optimizing and assessing diagnostic capability, demonstrated for collective Thomson scattering (invited) [J].
Bindslev, H .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1999, 70 (01) :1093-1099
[3]   Dimensionally exact energy confinement scaling in W7-AS [J].
Dose, V ;
Preuss, R ;
von der Linden, W .
PHYSICAL REVIEW LETTERS, 1998, 81 (16) :3407-3410
[4]   Thomson scattering analysis with the Bayesian probability theory [J].
Fischer, R ;
Wendland, C ;
Dinklage, A ;
Gori, S ;
Dose, V .
PLASMA PHYSICS AND CONTROLLED FUSION, 2002, 44 (08) :1501-1519
[5]   Electron energy distribution reconstruction in low-pressure helium plasmas from optical measurements [J].
Fischer, R ;
Dose, V .
PLASMA PHYSICS AND CONTROLLED FUSION, 1999, 41 (09) :1109-1123
[6]  
HIRSCH M, 2002, COMMUNICATION
[7]   Electron cyclotron emission by non-Maxwellian bulk distribution functions [J].
Krivenski, V .
FUSION ENGINEERING AND DESIGN, 2001, 53 (1-4) :23-33
[8]  
Kuhner G, 1997, REV SCI INSTRUM, V68, P732, DOI 10.1063/1.1147754
[9]   New advanced operational regime on the W7-AS stellarator -: art. no. 015001 [J].
McCormick, K ;
Grigull, P ;
Burhenn, R ;
Brakel, R ;
Ehmler, H ;
Feng, Y ;
Gadelmeier, F ;
Giannone, L ;
Hildebrandt, D ;
Hirsch, M ;
Jaenicke, R ;
Kisslinger, J ;
Klinger, T ;
Klose, S ;
Knauer, JP ;
König, R ;
Kühner, G ;
Laqua, HP ;
Naujoks, D ;
Niedermeyer, H ;
Pasch, E ;
Ramasubramanian, N ;
Rust, N ;
Sardei, F ;
Wagner, F ;
Weller, A ;
Wenzel, U ;
Werner, A .
PHYSICAL REVIEW LETTERS, 2002, 89 (01) :150011-150014
[10]   Genetic algorithms in plasma diagnostic analysis [J].
Millar, AP ;
McDonald, DC ;
Diver, DA .
PLASMA PHYSICS AND CONTROLLED FUSION, 2000, 42 (03) :337-346