Restrict tf turn to correct supercon

process/core/input.py

@@ -297,7 +297,9 @@ def bounds(self) -> tuple[NumberType | None, NumberType | None]:
     "crane_arm_h": InputVariable("buildings", float, range=(1.0, 100.0)),
     "crane_clrnc_h": InputVariable("buildings", float, range=(0.0, 10.0)),
     "crane_clrnc_v": InputVariable("buildings", float, range=(0.0, 10.0)),
-    "dx_tf_croco_strand_copper": InputVariable("rebco", float, range=(0.001, 0.1)),
+    "dx_tf_croco_strand_copper": InputVariable(
+        "superconducting_tfcoil", float, range=(0.001, 0.1)
+    ),
     "cryomag_h": InputVariable("buildings", float, range=(1.0, 100.0)),
     "cryomag_l": InputVariable("buildings", float, range=(10.0, 1000.0)),
     "cryomag_w": InputVariable("buildings", float, range=(10.0, 1000.0)),
@@ -708,20 +710,6 @@ def bounds(self) -> tuple[NumberType | None, NumberType | None]:
         "superconducting_tfcoil",
         float,
         range=(1e-08, 0.0001),
-        additional_actions=lambda _n, rt, _i, _c: (
-            rt <= 1e-6
-            or logger.warning(
-                (
-                    "the relationship between REBCO layer thickness "
-                    "and current density is not linear."
-                    "REBCO layer thicknesses > 1um should be considered "
-                    "an aggressive extrapolation of"
-                    "current HTS technology and any results "
-                    "must be considered speculative."
-                ),
-                stacklevel=1,
-            )
-        ),
     ),
     "redun_vacp": InputVariable("costs", float, range=(0.0, 100.0)),
     "residual_sig_hoop": InputVariable("cs_fatigue", float, range=(0.0, 1000000000.0)),

process/core/io/obsolete_vars.py

@@ -49,7 +49,7 @@
     "thkwp": "dr_tf_wp_with_insulation",
     "leni": "dx_tf_turn_cable_space_average",
     "leno": "t_turn",
-    "conductor_width": "t_conductor",
+    "conductor_width": "dx_tf_turn_conduit_full_average",
     "deltf": "dr_tf_shld_gap",
     "ddwi": "dr_vv_outboard",
     "pnuccp": "pnuc_cp",
@@ -472,6 +472,7 @@
     "alstroh": "stress_cs_steel_max",
     "i_cs_stress": None,
     "f_nd_alpha_electron": "f_nd_alpha_thermal_electron",
+    "t_conductor": "dx_tf_turn_conduit_full_average",
 }
 
 OBS_VARS_HELP = {

process/core/io/plot/summary.py

@@ -7519,6 +7519,8 @@ def _pack_strands_rectangular_with_obstacles(
         f"Critical field at zero \ntemperature and strain: {mfile.get('b_tf_superconductor_critical_zero_temp_strain', scan=scan):.4f} T\n"
         f"Critical temperature at \nzero field and strain: {mfile.get('temp_tf_superconductor_critical_zero_field_strain', scan=scan):.4f} K\n"
         f"Temperature at conductor: {mfile.get('tftmp', scan=scan):.4f} K\n"
+        f"Field at conductor: {mfile.get('b_tf_inboard_peak_with_ripple', scan=scan):.4f} T\n"
+        f"Superconductor critical current density at \noperating conditions: {mfile.get('j_tf_superconductor_critical', scan=scan):.2e} A/m$^2$\n"
         f"$I_{{\\text{{TF,turn critical}}}}$: {mfile.get('c_turn_cables_critical', scan=scan):,.2f} A\n"
         f"$I_{{\\text{{TF,turn}}}}$: {mfile.get('c_tf_turn', scan=scan):,.2f} A\n"
         f"Critcal current ratio: {mfile.get('f_c_tf_turn_operating_critical', scan=scan):,.4f}\n"
@@ -7797,6 +7799,8 @@ def plot_tf_croco_turn(axis: plt.Axes, fig, mfile: MFile, scan: int):
         f"Critical field at zero \ntemperature and strain: {mfile.get('b_tf_superconductor_critical_zero_temp_strain', scan=scan):.4f} T\n"
         f"Critical temperature at \nzero field and strain: {mfile.get('temp_tf_superconductor_critical_zero_field_strain', scan=scan):.4f} K\n"
         f"Temperature at conductor: {mfile.get('tftmp', scan=scan):.4f} K\n"
+        f"Field at conductor: {mfile.get('b_tf_inboard_peak_with_ripple', scan=scan):.4f} T\n"
+        f"Superconductor critical current density at \noperating conditions: {mfile.get('j_tf_superconductor_critical', scan=scan):.2e} A/m$^2$\n"
         f"$I_{{\\text{{TF,turn critical}}}}$: {mfile.get('c_turn_cables_critical', scan=scan):,.2f} A\n"
         f"$I_{{\\text{{TF,turn}}}}$: {mfile.get('c_tf_turn', scan=scan):,.2f} A\n"
         f"Critcal current ratio: {mfile.get('f_c_tf_turn_operating_critical', scan=scan):,.4f}\n"

process/data_structure/superconducting_tf_coil_variables.py

@@ -113,11 +113,11 @@ class SuperconductingTFData:
     tan_theta_coil: float = 0.0
     """Tan half toroidal angular extent of a single TF coil inboard leg"""
 
-    t_conductor_radial: float = 0.0
-    """Conductor area radial and toroidal dimension (integer turn only) [m]"""
+    dr_tf_turn_conduit_full: float = 0.0
+    """Radial thickness of the full conduit around the cable space (integer turn only) [m]"""
 
-    t_conductor_toroidal: float = 0.0
-    """Conductor area radial and toroidal dimension (integer turn only) [m]"""
+    dx_tf_turn_conduit_full_toroidal: float = 0.0
+    """Toroidal thickness of the full conduit around the cable space (integer turn only) [m]"""
 
     dr_tf_turn_cable_space: float = 0.0
     """Cable area radial and toroidal dimension (integer turn only) [m]"""
@@ -246,31 +246,27 @@ class SuperconductingTFData:
     a_tf_croco_strand: float = 0.0
     """Total area of a CroCo strand (m²)"""
 
-    # croco_strand
-
-    tf_croco_strand_area: float = 0.0
     cur_tf_turn_croco_strand_critical: float = 0.0
     """Critical current in the TF turn CroCo strand (A)"""
 
-    # conductor
+    a_tf_turn_croco_cable_space_copper: float = 0.0
+    """Area of the copper in the CroCo cable space of the TF turn (includes tapes,
+    outer tube and central copper) (m²)"""
+
+    a_tf_turn_copper_total: float = 0.0
+    """Area of all copper in the TF turn [m²]"""
+
+    f_a_tf_turn_copper: float = 0.0
+    """Fraction of the TF turn area that is copper"""
 
-    a_tf_turn_croco_cable_space_copper: float = None
-    conductor_copper_fraction: float = None
-    a_tf_turn_croco_copper_bar: float = None
+    a_tf_turn_croco_copper_bar: float = 0.0
     """Area of the central copper strand in the CroCo TF turn [m²]"""
-    a_tf_turn_croco_hastelloy: float = None
-    conductor_hastelloy_fraction: float = None
-    conductor_helium_area: float = None
-    conductor_helium_fraction: float = None
-    conductor_solder_area: float = None
-    conductor_solder_fraction: float = None
-    conductor_jacket_area: float = None
-    conductor_jacket_fraction: float = None
-    conductor_rebco_area: float = None
-    conductor_rebco_fraction: float = None
-    conductor_critical_current: float = None
-    conductor_area: float = None
-    """Area of cable space inside jacket"""
+
+    f_a_tf_turn_superconductor: float = 0.0
+    """Fraction of the TF turn area that is superconducting material"""
+
+    a_tf_turn_croco_hastelloy: float = 0.0
+    """Area of the Hastelloy in the CroCo cable space of the TF turn (includes tapes and outer tube) (m²)"""
 
     t1: float = 0.0
 

process/data_structure/tfcoil_variables.py

@@ -95,8 +95,8 @@ class TFData:
     tfc_sidewall_is_fraction: bool = False
     """logical switch to make dx_tf_side_case_min a fraction of TF coil thickness (`casths_fraction`)"""
 
-    t_conductor: float = 0.0
-    """Conductor (cable + steel conduit) area averaged dimension [m]"""
+    dx_tf_turn_conduit_full_average: float = 0.0
+    """Average full width of the conduit surrounding the TF turn cable space [m]"""
 
     dx_tf_turn_general: float = 0.0
     """TF coil turn edge length including turn insulation [m]
@@ -757,7 +757,10 @@ class TFData:
     """mass of ground-wall insulation layer per coil (kg/coil)"""
 
     m_tf_coils_total: float = 0.0
-    """total mass of the TF coils (kg)"""
+    """Total mass of all TF coils (kg)"""
+
+    m_tf_coil: float = 0.0
+    """Total mass of one TF coil (kg)"""
 
     dx_tf_wp_primary_toroidal: float = 0.0
     """width of first step of winding pack (m)"""

process/models/superconductors.py

@@ -814,34 +814,34 @@ def hijc_rebco(
     # finding A(T); constants based on a Newton polynomial fit to pubished data
     a_t = a_0 + (u * temp_conductor**2) + (v * temp_conductor)
 
-    # Critical current density (A/m2)
+    # Critical current
     # In the original formula bcrit must be > bmax to prevent NaNs.
     # However, negative jcrit is permissible (I think).
     # So when bcrit < bmax, I reverse the sign of the bracket,
     # giving a negative but real value of jcrit.
 
     if b_critical > b_conductor:
-        j_critical = (
+        cur_critical = (
             (a_t / b_conductor)
             * b_critical**b
             * (b_conductor / b_critical) ** p
             * (1 - b_conductor / b_critical) ** q
         )
     else:
-        j_critical = (
+        cur_critical = (
             (a_t / b_conductor)
             * b_critical**b
             * (b_conductor / b_critical) ** p
             * (b_conductor / b_critical - 1) ** q
         )
 
-    # Jc times HTS area: default area is width 4mm times HTS layer thickness 1 um,
+    # Critical current times HTS area: default area is width 4mm times HTS layer thickness 1 um,
     # divided by the tape area to provide engineering Jc per tape,!
     # A scaling factor of 0.4 used to be applied below to assume the difference
     # between tape stacks and CORC cable layouts.
 
     j_critical = (
-        j_critical
+        cur_critical
         * (dr_hts_tape * dx_hts_tape_rebco)
         / (dr_hts_tape * dx_hts_tape_total)
     )