JET_52015_com.dat = comments file for ITPA WDB Profile Database submission

  Tokamak: JET

  Pulse number: 52015

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

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

  Institution: EFDA-JET

  Date of shot: 20001010

  Time of interest = 22.0s (62.0s in JET PPF time) for steady state
    near peak Greenwald fraction (0.98).

  Analysis codes: TRANSP and EFIT (for plasma boundary)

  Run number: 52015C12

  Date of analysis: 20051022 by Robert Budny (budny@princeton.edu)
  Resubmission correcting BETMHD

 Assumptions for analysis:
 
  up/down asymmetric boundary given by EFIT.
  Ti, toroidal rotation, and C density profiles from CX measurements
  during NBI between x (sqrt. normalized toroidal flux) about 0.25 and 0.8.
  Ti extrapolated to Te before x=0.25 and beyond x=0.85
  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 52015 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 0.98), and was less steady.
  The upper and lower triangularities of the boundary were approximately
  0.45-0.50 and 0.35-0.40. 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 13.5 MW from 15 to 24 s in the TRANSP run
  (55-64 s in JET time).
  The ELMs were of Type I with a frequency of approximately 30 Hz at 22 s.
  The sawteeth frequency was approximately 7-8 Hz during the NBI.
  The Greenwald fraction was above 95% for 21.4-23.7 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 agrees well with the peak measured
  value (6.0E15/s) occuring early in the NBI phase, but the simulated
  value later in the flattop phase is high about 40-60%.
  This discrepancy could be due to Z_eff being too low or Ti being
  too high.

  The JETPPF CX data was CXSM seq 165
  The JETPPF Te and ne data was LIDR seq 105
  The JETPPF magnetics data was MG2 seq 035
  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_52015_2d.dat, trace H is stored in NM1, dominant D in NM2, trace T 
  in NM3.
  The combined measured C and Ni impurity is in NM4.
 
  In the file jet_52015_0d.dat data is given at 22.0 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 general 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 isotopes", Physics of Plasmas <7>
       (2000) 5038-5050.