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Change pedestal pressure calculation to use normalized pedestal radii #4731

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Change pedestal pressure calculation to use normalized pedestal radii #4731

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20 changes: 7 additions & 13 deletions process/models/physics/plasma_profiles.py
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Original file line number Diff line number Diff line change
Expand Up @@ -319,23 +319,17 @@ def calculate_profile_factors(self):
PlasmaProfileShapeType(self.data.physics.i_plasma_pedestal)
== PlasmaProfileShapeType.PEDESTAL_PROFILE
):
# Pedestal pressure is the profile value where gradient is maximum
# (i.e the smallest negative value)
# Pedestal pressure is taken at the lower of the temperature and
# density normalised pedestal radii
rho = self.neprofile.profile_x
pres_profile = self.data.physics.pres_plasma_thermal_total_profile
dpres_drho = np.gradient(pres_profile, rho)
# Find rho index closest to the normalized pedestal positions
pedestal_rho = np.min([
pedestal_rho = min(
self.data.physics.radius_plasma_pedestal_temp_norm,
self.data.physics.radius_plasma_pedestal_density_norm,
])
)
closest_idx = np.argmin(np.abs(rho - pedestal_rho))
mask = np.zeros_like(rho, dtype=bool)
mask[closest_idx:] = True
dpres_drho_pedestal = dpres_drho[mask]
max_grad_idx_pedestal = np.argmax(dpres_drho_pedestal)
max_grad_idx = np.where(mask)[0][max_grad_idx_pedestal]
self.data.physics.pres_plasma_pedestal_thermal = pres_profile[max_grad_idx]
self.data.physics.pres_plasma_pedestal_thermal = (
self.data.physics.pres_plasma_thermal_total_profile[closest_idx]
)

self.data.physics.pres_plasma_separatrix_thermal = (
self.data.physics.pres_plasma_thermal_total_profile[-1]
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