9th ITPA Confinement Database and Modelling Topical Physics Group meeting in St. Petersburg 1/5 NF paper on H-mode confinement DB3 Darren McDonald.

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9th ITPA Confinement Database and Modelling Topical Physics Group meeting in St. Petersburg 1/5 NF paper on H-mode confinement DB3 Darren McDonald

9th ITPA Confinement Database and Modelling Topical Physics Group meeting in St. Petersburg 2/5 Aims and overview Paper describes updates to and analysis of DB3 from 1994 – Data from 18 machines of different sizes and shapes. DB now contains D-T, low A, dim. Scan… data + more data from range of divertors and high , n and I p. Physics: shape, fuelling, core and edge, dimensionless parameters, comparison with 1d transport codes Statistics: error estimates, EIV, reducing correlations Key aim of DB is ITER predictions: recommended scalings

9th ITPA Confinement Database and Modelling Topical Physics Group meeting in St. Petersburg 3/5 1.Introduction 2.Changes to DB3 (Machine descriptions) 3.DB3: subsets, errors, condition 4.  E power law scalings (OLS, EIV,  *) 5.Two term models 6.Other models: offsets, other vars, … 7.ITER: scalings, intervals 8.Conclusion A.Summary of new variables + link to website Structure

9th ITPA Confinement Database and Modelling Topical Physics Group meeting in St. Petersburg 4/5 Machine overviews Thank you: generally homogeneous (~1-2 pages) Missing data Machine overview/reference: JT-60U, TFTR Selection method: MAST Diagnostics/analysis: DIII-D, NSTX, T-10 Pedestal data: AUG, C-Mod, DIII-D, JET, JT-60U Refs: AUG, C-Mod, NSTX, TCV, TFTR Reduction Refs and diagnostic description: JET

9th ITPA Confinement Database and Modelling Topical Physics Group meeting in St. Petersburg 5/5 Conclusion Paper provides a discussion of construction and analysis work on DB3, including two term models This meeting: discussion of pre-draft some help with machine descriptions First full draft: November Submission: early 2006