app: stacked_cores: complete the first 42-xx inverter run

crates/applications/stacked_cores/scripts/stacked_cores_40xx_db.py

@@ -181,7 +181,7 @@ sims = [
     (SimParams41(18, 0, 400,  "5e9"),  None, 20000),
     (SimParams41(4,  3, 400,  "4e10"), None, 20000),
 
-    (SimParams42(9,  1, 400,  "10e9"), None, 20000),
+    (SimParams42(9,  1, 400,  "1e10"), None, 20000),
 ]
 
 measurements = { real.machine_name: [human, norm, None, None] for (real, human, norm) in sims }
@@ -2438,4 +2438,30 @@ Piecewise(
 )
 """)
 
+set_meas("42-0.0004rad-9coupling-3_1_winding-1e10-drive", """
+Piecewise(
+    [
+        [ -17058,   -701 ],  # -1.0
+        [ -16918,   -872 ],  # -0.3
+        [ -16674,  -1109 ],  # -0.2
+        [ -16229,  -1523 ],  # -0.17
+        [ -15180,  -2619 ],  # -0.15
+        [ -13427,  -4501 ],  # -0.14
+        [ -11336,  -6619 ],  # -0.13
+        [  -9221,  -8727 ],  # -0.12
+        [  -7097, -10810 ],  # -0.11
+        [  -4971, -12812 ],  # -0.1
+        [  -2844, -14563 ],  # -0.09
+        [   -717, -15913 ],  # -0.08
+        [   1408, -16328 ],  # -0.07
+        [   3525, -16512 ],  # -0.06
+        [   5626, -16686 ],  # -0.05
+        [  11121, -16764 ],  # 0.0
+        [  13525, -16776 ],  # 0.1
+        [  16456, -16784 ],  # 0.2
+        [  16883, -16784 ],  # 1.0
+    ]
+)
+""")
+
 if __name__ == '__main__': main()

crates/applications/stacked_cores/src/main.rs

@@ -4269,59 +4269,32 @@ fn main() {
             ][..],
             &[
                 // establish the slope around the most likely stable/amplifying region
-                0.20,
-                0.10,
-                0.05,
-                0.15,
-                0.30,
-            ][..],
-            &[
-                0.12,
-                0.17,
-                0.11,
-                0.13,
-                0.14,
-                0.07,
-                0.09,
-                0.08,
-                0.06,
-                0.03,
-                0.04,
-                0.02,
-                0.01,
-                0.16,
-                0.18,
-                0.19,
-            ][..],
-            &[
-                // fill in the hopefully-less-interesting/impactful regions (pos)
-                 0.50,
-                 0.80,
-                 0.20,
-                 0.25,
-            ][..],
-            &[
-                // less interesting regions (neg)
-                -0.30,
-                -0.50,
-                -0.80,
                 -0.20,
-                -2.00,
+                -0.10,
+                -0.05,
+                -0.15,
+                -0.30,
+                 0.20,
             ][..],
             &[
-                // more detail (neg)
-                -0.05,
-                -0.07,
-                -0.10,
+                // precise slope measurements
+                -0.13,
+                -0.08,
                 -0.12,
-                -0.15,
+                -0.11,
+                -0.09,
+                -0.07,
+                -0.14,
+                -0.06,
                 -0.17,
+                -0.16,
+                -0.18,
+                -0.19,
                 -0.25,
-                -0.40,
-                -0.60,
-                 1.50,
-                -1.50,
-                 2.00,
+                -0.03,
+                -0.02,
+                -0.04,
+                -0.01,
             ][..],
         ] {
             for (coupling_loops, s0_loops, s_major, cur_flt) in [