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feat: use real Cartesian Boozer chartmaps #333

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Merged
krystophny merged 1 commit into from
Mar 28, 2026
Merged

feat: use real Cartesian Boozer chartmaps #333

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9 changes: 3 additions & 6 deletions src/boozer_converter.F90
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Original file line number Diff line number Diff line change
Expand Up @@ -1132,11 +1132,8 @@ subroutine export_boozer_chartmap(filename)
R, Zval, alam, dR_ds, dR_dt, dR_dp, &
dZ_ds, dZ_dt, dZ_dp, dl_ds, dl_dt, dl_dp)

! Convert to Cartesian using phi_B as the azimuthal angle.
! This creates a pseudo-Cartesian representation consistent
! with the Boozer toroidal grid (atan2(y,x) = phi_B).
x_arr(i_rho, i_theta, i_phi) = R * cos(phi_B)
y_arr(i_rho, i_theta, i_phi) = R * sin(phi_B)
x_arr(i_rho, i_theta, i_phi) = R * cos(phi_V)
y_arr(i_rho, i_theta, i_phi) = R * sin(phi_V)
z_arr(i_rho, i_theta, i_phi) = Zval
end do
end do
Expand Down Expand Up @@ -1193,7 +1190,7 @@ subroutine export_boozer_chartmap(filename)
! Global attributes
call nc_assert(nf90_put_att(ncid, nf90_global, "rho_convention", "rho_tor"), &
"att rho_convention")
call nc_assert(nf90_put_att(ncid, nf90_global, "zeta_convention", "cyl"), &
call nc_assert(nf90_put_att(ncid, nf90_global, "zeta_convention", "boozer"), &
"att zeta_convention")
call nc_assert(nf90_put_att(ncid, nf90_global, "rho_lcfs", rho_arr(ns_B)), &
"att rho_lcfs")
Expand Down
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