iter_20020100_com.dat = comments file for ITER Profile Database submission

  Tokamak: ITER

  Pulse number: 20020100
    Scenario = 4 (Hybrid), shot = 002 (high beta_n), modeler = 01 (Budny), try = 00

  Shot description,purpose of the shot: 
     simulation of a high beta_n Hybrid plasma in ITER

  Contact person: Robert Budny

  Institution:  PPPL

  Date of shot: future

  Special time of interest
    250.0 steady-state with 20MW he3-minority ICRH and 33MW NNBI 
    heating and current drive

  Analysis codes: TSC / TRANSP

  TRANSP run number: 40500A04

  Date of analysis: 20080318 by Robert Budny (budny@princeton.edu) and
  Chuck Kessel

 Assumptions made for analysis:

  TSC generated movie.cdf_iterhyb_02
    toroidal field = 5.3T at R=6.2m
    evolved free boundary, plasma current, and density to steady state around 170s
    pedestal Te and Ti prescribed, GLF23 to predict Ti and Te profiles

  TRANSP run ITER/05 40200A02 used the TSC boundary and plasma and impurity profiles
    50 zones for thermal plasma, ESC for MHD equilibria
    20MW ICRH at 52.5 MHz with minority n_He3 / n_e = 2% from 180 to 240s
    1-MeV D-NNBI of 16.5 MW starting at 50s, stepped up to 33MW at 100s
    D-NNBI is co-directed on axis with a tengency radius of 5.3m
    Excited-states ionization of the beam neutrals is modeled
    Assumed n_Be / n_e = 2%, n_C / n_e = 1%, n_Ar / n_e = 0.12%
    He4 ash accumulation simulated assuming explicit diffusivity = 1.0 m2/s,
      inward pinch = 1 m/s, and wall/divertor recycling coefficient = 0.7
    Toroidal rotation is modeled assuming the computed NNBI torques and
      chi_mom = chi_i
    NCLASS used for neoclassical profiles

 Additional information:

  The NNBI aiming was chosen to direct the 1MeV beam D-neutrals on-axis.

  The New Spruce code was used to compute ICRH assuming n_he3 / n_e = 0.01
  and frequency =  52.5 MHz.
  Results at 250s
     T       harmonic  2 at R= 633.0 cm.                                   
     D       harmonic  1 at R= 479.0 cm.                                   
     He4     harmonic  1 at R= 479.0 cm.                                   
     Ar39_18 harmonic  1 at R= 442.5 cm.                                   
     Be9_4   harmonic  1 at R= 426.9 cm.                                   
     C12_6   harmonic  1 at R= 479.0 cm.                                   
     D_MCfi  harmonic  1 at R= 479.0 cm.                                   
    *He3_min harmonic  1 at R= 633.0 cm.                                   
     He4_MCf harmonic  1 at R= 479.0 cm.      
   SPRUCE compted power fractions @247s
     thermal T       13.2%
     thermal D        3.0%
     thermal He4      0.2%
     thermal Ar39_18  0.70%
     thermal Be9_4    0.4%
     fast He3_min    38.7%
     thermal elect   37.1%
     fast He4         4.8%
     fast D           1.5%      

  In the file iter_200101_0d.dat data is given at 250 secs. 

  Publications:  
    1) For an analysis of a similar ITER shot and comparisons with the highest
       DT fusion power TFTR and JET shots see
       R.V.Budny, "Fusion alpha parameters in DT plasmas with high DT fusion
       rates", Nuclear Fusion <42> (2002) 1382.
    2) R.Budny's talk at the ITPA CMDB meeting in Kyoto, Japan, April, 2005
       w3.pppl.gov/~budny/ITPA_iter_0504.pdf
    3) C.Kessel's talk at the ITPA Steady State meeting in Italy, May, 2005