JET_38285_com.dat = comments file for ITPA WDB Profile Database submission

  Tokamak: JET

  Pulse number: 38285

  Shot description,purpose of the shot: 
     ELMy H-mode with high gas fueling

  Contact persons: Robert Budny, Jef Ongena, Xavier Garbet

  Institution:  EFDA-JET

  Date of shot: 19960830

  Time of interest = 18.39s (58.39s in JET PPF time) for steady state

  Analysis codes: TRANSP and EFIT (for plasma boundary)

  Run number: 38285C03 at PPPL (available via mdsplus)

  Date of analysis: 20051107 TRANSP run by Robert Budny (budny@princeton.edu)
  This is a resubmission updating variables

 Additional information:

  JET shot 38285 (2.5T, 2.5MA) is an ELMy H-mode shot with high gas fuelling
  obtained in a new JET pump divertor configuration. Plasma is deuterium
  in a single-null X-point configuration with the ion gradB drift pointing 
  towards the X-point.
  About 6.0MW of 80KV/D and 6.0MW of 140KV/D neutral beam heating is
  turned on at 14 s (54 s in JET machine time). The beam heating is 
  decreased from 19 secs and ceases at 20 secs.

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

  In jet_38285_2d.dat the deuterium density is stored in NM1, trace H in NM2,
  and trace T in NM3. 
  NM4 contains the carbon density being the majority impurity species. 

  In the file JET_38285_0d.dat data its given at 18.39 secs.
  At that time, there is 11.5MW of beam heating and the plasma is 
  in a steady ELMy H-mode phase. 

  Values for kappa and delta in the 0d, 1d and 2d files are from the TRANSP
  output derived from the boundary input definition provided by EFIT.
  kappa = (Zmax-Zmin)/(Rmax-Rmin); delta = (RGEO - R(Zmax))/a
  XPLIM and SEPLIM from XLOC
  as defined in the standard list of variables. The 1d files for IP,VSURF 
  and IBOOT have negative values as normal for JET. 
  
  Some comments on this particular TRANSP run 38285
  ESC equilibrium LEVGEO = 7
  Up-down asymmetric boundary definition obtained from the EFIT program

  Early sawteeth events are taken into account in the simulation.
  Ti, v_phi, and Z_eff profiles from CX measurements between 14 and 19s.
  Te and Ne profiles vs. radius is from LIDAR measurements.
  50 zones were used to resolve the thermal plasma profiles.
  Edge recycling and gas puffing used for particle balance to compute
  particle fluxes.
 
  The TRANSP run 38285C03 gives a simulated W_dia 20% lower than
  the measured and a simulated neutron yield 5% higher than
  the measured.

 Publications:
    1) For details of this plasma see
       G.Matthews, et al EPS Berchtesgarten 1997
    2) For description of TRANSP analysis of JET ELMy H-mode plasmas see
       R.V.Budny, et al., "Local transport in Joint European edge-localized
       high-confinement mode plasmas with H, D, DT, and T isotopes",
       Phys. of Plasmas <7> (2000) 5038