Modify Python and MAD-X input

Author: cemitch99

examples/chicane/chicane.madx

@@ -8,11 +8,11 @@ D3: drift, L=2.0;
 ! theta=0.50037/10.35;
 ! inv_rho=1.0/10.35
 ! TODO put `angle=theta` for SBENDs and `e1=theta` for DIPEDGEs with their right sign
-SB1: sbend, L=0.50037, angle=-0.04834492753623188, e1=0.000, e2=0.000, k1=0.00;
-SB2: sbend, L=0.50037, angle=0.04834492753623188, e1=0.000, e2=0.000, k1=0.00;
+SB1: sbend, L=0.500194828041958, angle=-0.04834492753623188, e1=0.000, e2=0.000, k1=0.00;
+SB2: sbend, L=0.500194828041958, angle=0.04834492753623188, e1=0.000, e2=0.000, k1=0.00;
 ! dipole edge elements
-DIPE1: dipedge, H=-0.0966183574879227, e1=-0.048345620280243, fint=0.000, hgap=0.000, tilt=0.00;
-DIPE2: dipedge, H=0.0966183574879227, e1=0.048345620280243, fint=0.000, hgap=0.000, tilt=0.00;
+DIPE1: dipedge, H=-0.096653578905433, e1=-0.048345620280243, fint=0.000, hgap=0.000, tilt=0.00;
+DIPE2: dipedge, H=0.096653578905433, e1=0.048345620280243, fint=0.000, hgap=0.000, tilt=0.00;
 
 CHICANE:     Line=(M1,SB1,DIPE1,D1,DIPE2,SB2,D2,SB2,DIPE2,D1,DIPE1,SB1,D3,M1);
 USE, SEQUENCE = CHICANE;

examples/chicane/run_chicane.py

@@ -48,17 +48,18 @@
 
 # design the accelerator lattice
 ns = 25  # number of slices per ds in the element
-rc = 10.35  # bend radius (meters)
+rc = 10.3462283686195526  # bend radius (meters)
 psi = 0.048345620280243  # pole face rotation angle (radians)
+lb = 0.500194828041958  # projected bend length (meters)
 
 # Drift elements
 dr1 = elements.Drift(ds=5.0058489435, nslice=ns)
 dr2 = elements.Drift(ds=1.0, nslice=ns)
 dr3 = elements.Drift(ds=2.0, nslice=ns)
 
 # Bend elements
-sbend1 = elements.Sbend(ds=0.50037, rc=-rc, nslice=ns)
-sbend2 = elements.Sbend(ds=0.50037, rc=rc, nslice=ns)
+sbend1 = elements.Sbend(ds=lb, rc=-rc, nslice=ns)
+sbend2 = elements.Sbend(ds=lb, rc=rc, nslice=ns)
 
 # Dipole Edge Focusing elements
 dipedge1 = elements.DipEdge(psi=-psi, rc=-rc, g=0.0, K2=0.0)