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Status of H-mode confinement Database by K. Thomsen, Naka, September 2007. - PowerPoint PPT Presentation
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Status of H-mode confinement Databaseby K. Thomsen, Naka, September 2007
New preliminary version DB4v5 (12399 obs) - New data from AUG, DIII-D, JT-60U, NSTX- Hybrid data are marked with variable HYBRID (= YES, IH, HYBRID )- new rotation variables as defined by S. Kaye ( DIII-D have supplied data for the old ones )
Some of the problems identified by A. Chudnovskiy have been solved.
Hybrid datasets from AUG, DIII-D and JET are still preliminary versions.
The selection variable OJK2006 will be set in the next release
List of variables has been updated Significant amount of time spent on checking
new data
Proposed Definitions for Rotation and Torque Variables• Rotation variables to be cast in terms of rotation frequency W, where
W=2pVtor/L, where L=2pRlocal, so that W=Vtor/Rlocal. Rlocal is R at the point of measurement. Units are sec-1.
• Rotation Variables• OMEGAIMP0 – Rotation frequency of impurities in center of plasma• OMEGAIMPH – Rotation frequency of impurities at the half radius• OMEGAM0 – Rotation frequency of the main plasma species in the center • OMEGAMH – Rotatoin frequency of main plasma species at the half radius• SPIN – As defined in attached document• Torque Variables – Units are Newton-meters• TORQ – As defined in attached document• TORQBM – Volume-integrated torque due to beam (as calculated in
TRANSP, for instance)• = TORQ if no (e.g.) TRANSP calculation exists• TORQIN – Volume-integrated total input torque (this could be a
combination of beam torque + torque due to applied or intrinsic error fields).• = TORQBM if no additional torques are to be considered
Hybrid characterisation
• Confinement scaling v tau98(y,2)…
• Residuals v. H98(y,2) for new fraction
• Correlation study
• Bootstrap fraction
Extra variables: fBS, rho(q=2), TauCR, inversion radius, ITB flag
Version DB4 compared to DB3
New data from NSTX New data from JET New data from DIII-D New data from MAST New data from AUG New data from JT-60U
No new C-Mod data
Data descriptions outstanding on the new data Review Sheets
Pedestal data?
Web page with documentation and access to different formats of the Db4v5 database http://efdasql.ipp.mpg.de/igd/ITER/DataInfo/Db4v5/DB4v5.htm
DB4v3 is combined w. Pedestal DB DB3v3 (HDB4v3_PDB3v3) – needs to bbe updated
Review sheets for all data in DB4v4 but not DB4v5
New List of Variables + cleaning of database- Relying on A. Chudnovskiy to check
Comments from Alexander Chudnovskiy on DB4v4
Comments on results of comparison – changed in DB$v51. There is TYP-I-II among ELMTYP types.
This type is not described in the List of variables. The variable list includes TYPE-II but it is absent in DB4v4.
2. There is O1 among ECHMOD types. It is not described in the List of variables. The variable list includes O but it is absent in DB4v4.
Remarks on parameters values. – still outstanding for DB4v51. The PGASA for 2 JET shots 46004 and 46005 is equal to 14.01 in
both DB4v4 and DB3v13.2. The BETMHD values for NSTX shots from 115495 to 117995 are
in the range from 5 to 35. They are probably given in percents.3. A lot of AUG shots have to high NE0 values.
Actions from last meeting in Lausanne• 1 paragraph describing the Hybrid data in the data base (FR, JD, DM,
HT, SK) asap - done• Updated versions of Hybrid data contributions (FR, JD, DM, HT,
SK) asap ~ done • New version of DB4v4 (KT) asap – DB4v5 created• Draft of H-mode ws abstract (KT) 25 May - done• Submit abstract (KT) 31May - done• Distribute definitions of rotation/torque etc variables (SK) - done• Provide data for the new variables (All) next meeting• Distribute workplan for PPCF paper on non-linear regressions
(OJK)• Distribute draft of PPCF paper (OJK)• NUstar scans from C-Mod - MG• JET H-mode data - December (DM)
DB4v5 info
• Proposed definitions of rotation and torque variables
• Definition of SPIN and TORQUE
• Number of observations in DB4v5
• AUG corrections
• DIII-D corrections
• JT-60U corrections
• NSTX corrections
• DB4v5 corrections