jet_52025_com.dat = comments file for ITPA WDB Profile Database submission

 Tokamak: JET

 Pulse number: 52025

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

 Contact persons: Robert Budny, Geoff Cordey, Jef Ongena, Xavier Garbet

 Institution: EFDA-JET

 Date of shot: 20001010

 Time of interest = 21.7s (61.7s in JET PPF time)

 Analysis codes: TRANSP and EFIT (for plasma boundary)

 Run number: 52025C08

 Date of analysis: 20051107 by Robert Budny(budny@princeton.edu)
   Resubmission correcting NM4

 Assumptions for analysis:

  Boundary given by EFIT.
  Ti, toroidal rotation, C, and Be density profiles from CX measurements
  during NBI between x (sqrt. normalized toroidal flux)>0.35)
  Ti extrapolated to Te for x < 0.35.
  There are no core CX measurements past x = 0.8, but there are
  edge (CXSE) measurements. These were used to extrapolate Ti to
  the edge.
  Z_eff profile input from CX data.
  Te and ne profiles from LIDAR measurements
  Radiation profile assumed to be flat.
  Sawteeth breaks from ECE measurements

 Additional information:

  Pulse 52025 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 0.92), and was less steady.
  The upper and lower triangularities of the boundary were approximately
  0.48-0.50 and 0.38-0.42. The elongation of the boundary was approximately
  1.65-1.70
  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 time).
  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 peaked at 0.88, and was above 80% for 18.5-22.5 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.

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

  Most quantities have been smoothed to suppress Monte-Carlo noise. 

  In jet_52025_2d.dat trace H is stored in NM1, D in NM2, trace T in NM3.
  The effective impurity density is stored in NM4.

  In the file jet_52025_0d.dat data is given at 20.8 secs.
  XPLIM is from XLOC; SEPLIM is given by EFIT.
  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