JET_50844_com.dat = comments file for ITPA WDB Profile Database submission
  
 Tokamak: JET

 Pulse number: 50844

 Shot description,purpose of the shot: 
   ELMy with high triangularity and power

 Contact persons: Robert Budny (budny@princeton.edu)

 Institution:  EFDA-JET

 Date of shot: 20000630

 Time of interest = 21.5s (61.5s in JET PPF time) for steady state

 Analysis codes: TRANSP and EFIT (for plasma boundary)

 Run number: 50844C02

 Date of analysis: 20080409 by Robert Budny
   This is a resubmission fixing QICRHE and QICRHI

 Assumptions made for analysis:

  Up/down asymmetric boundary given by EFIT.
  Ti and toroidal rotation velocity profiles from CX measurements.
  Both the core (CXSM) and edge (CXSE) measurements were combined.
  Te and Ne profiles vs. radius from LIDAR measurements.
  Density of 2 impurity species (Be, and C) were used to produce a Zeff profile. 
  The radiation emission profile was derived from inverting two bolometry views.
  Particle confinement time is calculated from source rates.
  q profile calculated in TRANSP from poloidal field diffusion.

 Additional information:

  Pulse #50844 was heated near the threshold for Type I<->III transitions,
  and transitioned both ways with a large change of energy and density
  confinement.

  The Ti, rotation, and Zeff profiles were measured from 17 to 22.3s
  between R=2.95 and 3.81m.

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

  The NBI voltages were 135 keV for 6 beams and 80keV for 7.

  All beam related quantities (energy, particle sources, currents etc) 
  have been smoothed to suppress Monte-Carlo noise. 
  In jet_50844_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_50844_0d.dat data is given at 21.50 secs. 

  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 - min(R(zmin),R(Zmax)))/a
  XPLIM and SEPLIM are given by EFIT.
  as defined in the standard list of variables.  
  
  The TRANSP run gives a simulated W_dia 15% above the measured value
  and a neutron emission rate 35% above the measured value.

 Publications:  
    1) For general description of gas scans in JET ELMy H-mode 
       plasmas see 
       R.Sartori, et al, EPS (2001)
    2) For comparisons with other ITER-relevant JET ELMy plasmas see
       J.Ongena, et al., IAEA (2002)
    3) 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.