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# This parameter file sets up Kerr/Kerr-Schild initial data, then
# finds the apparent horizon in it. The local coordinate system origin
# and the initial guess are both deliberately de-centered with respect
# to the black hole, to make this a non-trivial test for the apparent
# horizon finder. This example uses cubic Hermite interpolation for
# maximum accuracy; note this requires driver::ghost_size to be >= 3.
# flesh
cactus::cctk_itlast = 0
ActiveThorns = "PUGH"
driver::ghost_size = 3
driver::global_nx = 31
driver::global_ny = 31
driver::global_nz = 19
ActiveThorns = "CoordBase SymBase CartGrid3D"
grid::domain = "bitant"
grid::avoid_origin = "false"
grid::type = "byspacing"
grid::dxyz = 0.2
ActiveThorns = "ADMBase ADMCoupling StaticConformal CoordGauge SpaceMask Exact"
ADMBase::initial_lapse = "exact"
ADMBase::initial_shift = "exact"
ADMBase::initial_data = "exact"
ADMBase::lapse_evolution_method = "static"
ADMBase::shift_evolution_method = "static"
ADMBase::metric_type = "physical"
Exact::exact_model = "Kerr/Kerr-Schild"
Exact::Kerr_KerrSchild__mass = 1.0
Exact::Kerr_KerrSchild__spin = 0.6
########################################
ActiveThorns = "IOUtil"
IOUtil::parfile_write = "no"
########################################
ActiveThorns = "AEILocalInterp PUGHInterp PUGHReduce SphericalSurface AHFinderDirect"
AHFinderDirect::print_timing_stats = "true"
AHFinderDirect::geometry_interpolator_pars = "order=3 boundary_off_centering_tolerance={1.0e-10 1.0e-10 1.0e-10 1.0e-10 1.0e-10 1.0e-10} boundary_extrapolation_tolerance={0.0 0.0 0.0 0.0 0.0 0.0}"
AHFinderDirect::output_Theta_every = 1
AHFinderDirect::h_base_file_name = "Kerr.h"
AHFinderDirect::Theta_base_file_name = "Kerr.Theta"
AHFinderDirect::N_horizons = 1
AHFinderDirect::origin_x[1] = 0.5
AHFinderDirect::origin_y[1] = 0.7
AHFinderDirect::origin_z[1] = 0.0
AHFinderDirect::initial_guess_method[1] = "coordinate sphere"
AHFinderDirect::initial_guess__coord_sphere__x_center[1] = -0.2
AHFinderDirect::initial_guess__coord_sphere__y_center[1] = 0.3
AHFinderDirect::initial_guess__coord_sphere__z_center[1] = 0.0
AHFinderDirect::initial_guess__coord_sphere__radius[1] = 2.0
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