jet_52024_com.dat = comments file for ITPA WDB Profile Database submission

 Tokamak: JET

 Pulse number: 52024

 Shot description, purpose of the shot: 
   ELMy H-mode with high confinement and density

 Contact persons: Robert Budny budny@princeton.edu), Jef Ongena, Xavier Garbet

 Institution: EFDA-JET

 Date of shot: 20001010

 Time of interest = 19.4s (59.4s in JET PPF time) 0.6s before peak
   Greenwald fraction

 Analysis codes: TRANSP and EFIT (for plasma boundary)

 Run number: 52024C08

 Date of analysis: 20051022 by Robert Budny
   Resubmission correcting GRHO1

 Assumptions for analysis:

  Up/down asymmetric boundary given by EFIT.
  Ti, toroidal rotation, C, and Zeff profiles from CX measurements
  from 15.1 to 19.7s and R=3.21-3.79m.
  Ti extrapolated in core and edge, and from 19.7s past the end of the NBI,
  which ends at 24.0s.
  Te and ne profiles from LIDAR measurements
  Radiation profile assumed to be flat.
  Sawteeth breaks from ECE measurements

 Additional information:

  Pulse 52024 was conducted under the Confinement Physics Task Force
  to investigate the influence of triangularity on confinement, pedestal,
  and SOL parameters. The plasma setup was similar to 52009, also
  released to the profile database, but had higher gas puffing
  (to a Greenwald fraction of 1.0 at 20.0s), and was less steady.
  The upper and lower triangularities of the boundary were approximately
  0.48 and 0.42. The elongation of the boundary was approximately 1.70
  The plasma current was 2.5 MA and the toroidal field was 2.7 T.
  The auxilliary heating consisted of D-NBI ramped up to a flattop
  value of approximately 15.0 MW from 15 to 22 s in the TRANSP run
  (55-62 s in JET PPF time).

  The direction of the toroidal field and plasma current were in the
  normal JET direction - clockwise viewed from above

  The ELMs were of Type I with a frequency of approximately 35-44 Hz.
  The sawteeth frequency was approximately 9 Hz during the NBI.
  The Greenwald fraction was above 90% for 18.7-20.4 sec.
  With similar plasmas during the same run, this pulse forms a density
  scan with various values of gas puffing.

  The TRANSP run gives a simulated W_dia about 17% lower than the measured
  value. The simulated neutron rate is about 10% higher than the
  measured values. The peak, 5.4E15/s, occurs early in the NBI phase.

  All calculations have been done on a 50 zone radial grid rather than
  the normal 20 grid.
  Plasma parameters have been smoothed to suppress noise.
 
  In the jet_52024_2d.dat, trace H is stored in NM1, D in NM2, trace T in NM3,
  and the measureed C impurity in NM4. 

  In the file jet_52024_0d.dat data is given at 20.8 secs.
  XPLIM and SEPLIM are from XLOC.
  DELTA is the average of the upper and lower triangularities.
  and not as defined in the standard list of variables.

 Publications:
    1) For generat description of high density JET ELMy H-mode plasmas see
       G. Saibene, et al, "Improved performance of ELMy H-mode
       at high density by plasma shaping in JET", Plasma Physics
       Controlled Fusion <44> (2002) 1769-1799,
    2) For a description of TRANSP analysis of JET ELMy H-mode plasmas see
       R.V. Budny, et al, "Local transport in Joint European
       Tokamak edge-localized, high confinement mode plasmas
       with H, D, DT, and T