new ActorInterferometer

Author: orso82

src/FUSE.jl

@@ -109,6 +109,7 @@ include(joinpath("actors", "current", "steadycurrent_actor.jl"))
 include(joinpath("actors", "current", "current_actor.jl"))
 
 include(joinpath("actors", "diagnostics", "fits_actor.jl"))
+include(joinpath("actors", "diagnostics", "interferometer_actor.jl"))
 include(joinpath("actors", "diagnostics", "magnetics_actor.jl"))
 
 include(joinpath("actors", "hcd", "simple_common.jl"))

src/actors/diagnostics/interferometer_actor.jl

@@ -0,0 +1,69 @@
+#= ================== =#
+#  ActorInterferometer  #
+#= ================== =#
+
+@actor_parameters_struct ActorInterferometer{T} begin
+    #== actor parameters ==#
+    n_points::Entry{Int} = Entry{Int}("-", "Number of integration points along line of sight"; default=100)
+    #== display and debugging parameters ==#
+end
+
+mutable struct ActorInterferometer{D,P} <: SingleAbstractActor{D,P}
+    dd::IMAS.dd{D}
+    par::OverrideParameters{P,FUSEparameters__ActorInterferometer{P}}
+end
+
+"""
+    ActorInterferometer(dd::IMAS.dd, act::ParametersAllActors; kw...)
+
+Calculates synthetic interferometer measurements from equilibrium and core profiles.
+
+This actor computes line-averaged electron density measurements that would be observed by
+interferometer diagnostics based on the plasma equilibrium and core profiles. It populates
+the `dd.interferometer` IDS with synthetic diagnostic signals.
+
+The actor calls `IMAS.interferometer!` to:
+- Calculate line-integrated electron density along each interferometer line of sight
+- Compute line-averaged density for each channel
+- Generate time-dependent synthetic signals consistent with the equilibrium and profile evolution
+
+Key physics:
+- Integration of electron density along interferometer chords
+- Proper handling of line-of-sight geometry (including multi-segment paths)
+- Time-dependent measurements across all equilibrium time slices
+
+Key outputs:
+- Line-averaged electron density in `dd.interferometer.channel[:].n_e_line_average`
+- Time-dependent diagnostic data for validation and comparison with experimental data
+
+Parameters:
+- `n_points`: Number of integration points along each line of sight (default: 100)
+
+!!! note
+
+    Requires `dd.equilibrium` and `dd.core_profiles` to be populated.
+    The `dd.interferometer` must have channels defined with `line_of_sight` geometry.
+    Results are stored in `dd.interferometer.channel[:].n_e_line_average`.
+"""
+function ActorInterferometer(dd::IMAS.dd, act::ParametersAllActors; kw...)
+    actor = ActorInterferometer(dd, act.ActorInterferometer; kw...)
+    step(actor)
+    finalize(actor)
+    return actor
+end
+
+function ActorInterferometer(dd::IMAS.dd, par::FUSEparameters__ActorInterferometer; kw...)
+    logging_actor_init(ActorInterferometer)
+    par = OverrideParameters(par; kw...)
+    return ActorInterferometer(dd, par)
+end
+
+function _step(actor::ActorInterferometer)
+    dd = actor.dd
+    par = actor.par
+
+    # Calculate interferometer diagnostics from equilibrium and core profiles
+    IMAS.interferometer!(dd.interferometer, dd.equilibrium, dd.core_profiles; n_points=par.n_points)
+
+    return actor
+end