Heat load in DIII-D dischrage 132018.01948

Heat loads in the inner and outer plate regions are computed with XGC0. The results for the inner plates are shown below:

The results for the outer plate are stored incorrectly. This problem with the code needs to be investigated. Also, the ion thermal flux is too noisy despite that more than 3,000,000 particles have been used in this simulation. The heat fluxes are also found to be unexpectingly low.


Running XGC0 code for the DIII-D discharges in analysis mode

A set of XGC0 simulations has been run to determine the anomalous transport coefficients that can be used together with the neoclassical transport, which self-consistently computed with XGC0, to reproduce the experimental profiles for four DIII-D current scan discharges. Below the final diffusivity parameters, initial and final profiles are given.

132014.03000

tbl_d_profile_on=-1     ! 1: spatially varying D_turb profile (tanh), 0: spatially constant profile in pedestal region
tbl_slope_on=0         ! D_turb turned on only within finite poloidal angles (+45 deg) around outside midplane
tbl_d_profile_psicen=0.93D0  ! D_turb profile center
tbl_d_profile_psiwid=0.02D0  ! D_turb profile full width
tbl_d_profile_psicen2=0.995D0  ! D_turb profile center
tbl_d_profile_psiwid2=-0.01D0  ! D_turb profile full width


! particle diffusivities (random walk diffusion coefficients)
tbl_D_coeff_in=0.2D0     ! m^2/sec, inside (pedestal top) value of D_turb
tbl_D_coeff=0.01D0      ! m^2/sec, outside (pedestal bottom) value of D_turb
tbl_D_coeff2=0.1D0     ! m^2/sec, D_turb for outside of separatrix (SOL+private flux region)

! ion thermal diffusivities
tbl_therDi_coeff_in=.070D0    ! m^2/sec, inside (pedestal top) value of thermal D_turb for ions
tbl_therDi_coeff=-0.050D0    ! m^2/sec, outside (pedestal bottom) value of thermal D_turb for ions
tbl_therDi_coeff2=0.6D0    ! m^2/sec, thermal D_turb for outside of separatrix (SOL+private flux region) for ions

! electron thermal diffusivities
tbl_therDe_coeff_in=0.8D0    ! m^2/sec, inside (pedestal top) value of thermal D_turb for electrons
tbl_therDe_coeff=0.03D0    ! m^2/sec, outside (pedestal bottom) value of thermal D_turb for electrons
tbl_therDe_coeff2=0.6D0    ! m^2/sec, thermal D_turb for outside of separatrix (SOL+private flux region) for electrons

132016.03023

tbl_d_profile_on=-1     ! 1: spatially varying D_turb profile (tanh), 0: spatially constant profile in pedestal region
tbl_slope_on=0         ! D_turb turned on only within finite poloidal angles (+45 deg) around outside midplane
tbl_d_profile_psicen=0.94D0  ! D_turb profile center
tbl_d_profile_psiwid=0.02D0  ! D_turb profile full width
tbl_d_profile_psicen2=0.995D0  ! D_turb profile center
tbl_d_profile_psiwid2=-0.01D0  ! D_turb profile full width


! particle diffusivities (random walk diffusion coefficients)
tbl_D_coeff_in=0.13D0     ! m^2/sec, inside (pedestal top) value of D_turb
tbl_D_coeff=0.04D0      ! m^2/sec, outside (pedestal bottom) value of D_turb
tbl_D_coeff2=0.3D0     ! m^2/sec, D_turb for outside of separatrix (SOL+private flux region)

! ion thermal diffusivities
tbl_therDi_coeff_in=0.1D0    ! m^2/sec, inside (pedestal top) value of thermal D_turb for ions
tbl_therDi_coeff=-0.05D0    ! m^2/sec, outside (pedestal bottom) value of thermal D_turb for ions
tbl_therDi_coeff2=0.7D0    ! m^2/sec, thermal D_turb for outside of separatrix (SOL+private flux region) for ions

! electron thermal diffusivities
tbl_therDe_coeff_in=0.25D0    ! m^2/sec, inside (pedestal top) value of thermal D_turb for electrons
tbl_therDe_coeff=0.02D0    ! m^2/sec, outside (pedestal bottom) value of thermal D_turb for electrons
tbl_therDe_coeff2=0.7D0    ! m^2/sec, thermal D_turb for outside of separatrix (SOL+private flux region) for electrons

132017.02998

tbl_d_profile_on=-1     ! 1: spatially varying D_turb profile (tanh), 0: spatially constant profile in pedestal region
tbl_slope_on=0         ! D_turb turned on only within finite poloidal angles (+45 deg) around outside midplane
tbl_d_profile_psicen=0.91D0  ! D_turb profile center
tbl_d_profile_psiwid=0.02D0  ! D_turb profile full width
tbl_d_profile_psicen2=0.995D0  ! D_turb profile center
tbl_d_profile_psiwid2=-0.01D0  ! D_turb profile full width


! particle diffusivities (random walk diffusion coefficients)
tbl_D_coeff_in=0.13D0     ! m^2/sec, inside (pedestal top) value of D_turb
tbl_D_coeff=0.015D0      ! m^2/sec, outside (pedestal bottom) value of D_turb
tbl_D_coeff2=0.2D0     ! m^2/sec, D_turb for outside of separatrix (SOL+private flux region)

! ion thermal diffusivities
tbl_therDi_coeff_in=.1D0    ! m^2/sec, inside (pedestal top) value of thermal D_turb for ions
tbl_therDi_coeff=-0.20D0    ! m^2/sec, outside (pedestal bottom) value of thermal D_turb for ions
tbl_therDi_coeff2=0.9D0    ! m^2/sec, thermal D_turb for outside of separatrix (SOL+private flux region) for ions

! electron thermal diffusivities
tbl_therDe_coeff_in=0.35D0    ! m^2/sec, inside (pedestal top) value of thermal D_turb for electrons
tbl_therDe_coeff=-0.01D0    ! m^2/sec, outside (pedestal bottom) value of thermal D_turb for electrons
tbl_therDe_coeff2=1.5D0    ! m^2/sec, thermal D_turb for outside of separatrix (SOL+private flux region) for electrons

132018.01948

tbl_d_profile_on=-1     ! 1: spatially varying D_turb profile (tanh), 0: spatially constant profile in pedestal region
tbl_slope_on=0         ! D_turb turned on only within finite poloidal angles (+45 deg) around outside midplane
tbl_d_profile_psicen=0.89D0  ! D_turb profile center
tbl_d_profile_psiwid=0.02D0  ! D_turb profile full width
tbl_d_profile_psicen2=0.995D0  ! D_turb profile center
tbl_d_profile_psiwid2=-0.01D0  ! D_turb profile full width


! particle diffusivities (random walk diffusion coefficients)
tbl_D_coeff_in=0.05D0     ! m^2/sec, inside (pedestal top) value of D_turb
tbl_D_coeff=0.002D0      ! m^2/sec, outside (pedestal bottom) value of D_turb
tbl_D_coeff2=0.2D0     ! m^2/sec, D_turb for outside of separatrix (SOL+private flux region)

! ion thermal diffusivities
tbl_therDi_coeff_in=0.3D0    ! m^2/sec, inside (pedestal top) value of thermal D_turb for ions
tbl_therDi_coeff=-0.1D0    ! m^2/sec, outside (pedestal bottom) value of thermal D_turb for ions
tbl_therDi_coeff2=0.7D0    ! m^2/sec, thermal D_turb for outside of separatrix (SOL+private flux region) for ions

! electron thermal diffusivities
tbl_therDe_coeff_in=.2D0    ! m^2/sec, inside (pedestal top) value of thermal D_turb for electrons
tbl_therDe_coeff=0.07D0    ! m^2/sec, outside (pedestal bottom) value of thermal D_turb for electrons
tbl_therDe_coeff2=0.7D0    ! m^2/sec, thermal D_turb for outside of separatrix (SOL+private flux region) for electrons