jet_40847_com.dat = comments file for ITPA WDB Profile Database submission

 Tokamak: JET

 Pulse number: 40847

 Shot description, purpose of the shot: 
   Optimized Shear

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

 Institution:  EFDA-JET

 Date of shot: 19970312

 Time of interest = 6.86s (46.86s in JET PPF time) for peak neutron emission

 Analysis codes: TRANSP and EFIT (for plasma boundary)

 Run number: 40847C22 done at PPPL, stored at JET and on mdsplus server

 Date of analysis: 20080319 by Robert Budny
   This is a resubmission fixing VROTM

 Assumptions made for analysis:
  20 Zones
  Up/down asymmetric boundary given by EFIT.
  Ti, toroidal rotation velocity, and Zeff profiles from CX measurements.
  Te and Ne profiles from LIDAR measurements.
  1D bulk radiation is used in radiation emission.
  Particle confinement time is calculated from source rates.
  q profile calculated in TRANSP from poloidal field diffusion.

 Additional information:

  Pulse #40847 had I_p=3.3MA, B_Z=3.58T
  19.0MW D-NBI from 45.0-48.5s
  6.0MW ICRH from 45-52.5s

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

  Values for elongation and triangularity in the 0d, 1d and 2d files are from 
  the TRANSP output derived from the boundary input definition provided by EFIT.
  KAPA = (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 in good agreement with the 
  measured values, and a neutron emission rate in excellent agreement with the 
  measured values up to 6.86s, then 5% lower than measured.

  JET shot 40847 has been run in the standard scenario for high performance
  Optimised Shear discharges and presents the typical sequence of confinement
  regimes. It achieved the second highest neutron rate of JET deuterium discharges.
   
  The deuterium discharge was initiated with a fast plasma current ramp and an
  early X-point formation at 40.8 secs. LHCD from 40.4 - 41.2 secs during
  the ramp phase helped form the target q-profile. 1MW of ICRH with H minority
  was used for pre-heating from 43.0 - 45.0 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 - R(Zmax))/a
  XPLIM is from XLOC ; SEPLIM is given by EFIT.
  as defined in the standard list of variables. The 1d files for IP,VSURF 
  and IBOOT have negative values as normal for JET. 
  
  Publications:  
    1) Soldner F.X, JET Team, Plasma Physics and Contr.Fusion 39,B353 (1997)
    2) Gormezano,C. and the JET Team, Plasma Phys. and Contr.Nucl Fusion
       Research 1997 (Proc. 16th Int.Conf.,Montreal, 1996), Vol.I,487.
    3) Parail, V., et al., to be published in Nuclear Fusion (1998)
    4) M.Beer et al, EPS
       Nuclear Fusion <39> (1999) 993.
    5) For use of the TRANSP code for JET plasjas 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