diff --git a/01_simple_variables.kat b/01_simple_variables.kat
index 1451435..d5cd713 100644
--- a/01_simple_variables.kat
+++ b/01_simple_variables.kat
@@ -2,31 +2,33 @@
 # An Advanced Virgo Plus input file for Finesse 3
 
 # Beamsplitter
-variable BS_T      0.5012
-variable BS_L      3.0e-5
-variable BS_W_AR_R 3.29e-4
-variable BS_S_AR_R 3.29e-4
-variable BS_W_AR_L 3.0e-5
-variable BS_S_AR_L 3.0e-5
+variable BS_T      0.5
+variable BS_L      0
+variable BS_W_AR_R 0
+variable BS_S_AR_R 0
+variable BS_W_AR_L 0
+variable BS_S_AR_L 0
 
 variable BS_alpha      -45
-variable BS_W_AR_alpha -29.1951
-variable BS_S_AR_alpha -29.1951
+variable BS_W_AR_alpha -45
+variable BS_S_AR_alpha -45
 
 variable BS_W_width 0.074459 units='m'
 variable BS_S_width 0.074459 units='m'
 variable BS_mass    34       units='kg'
 
 # Mirror M1
-variable M1_R     
-variable M1_AR_R  
-variable M1_T     
-variable M1_AR_T  0.0
-variable M1_Rc    
-variable M1_AR_Rc 
+variable M1_R     0.90
+variable M1_AR_R  0.01
+variable M1_T     0.01
+variable M1_AR_T  0.99
 
 variable M1_width 0.2 units='m'
-variable m1_mass  42  units='kg'
+variable M1_mass  42  units='kg'
 
 variable M1_fz 0.76
 variable M1_Qz 40
+
+# distance
+variable laser_beamsplitter  1 units='m'
+variable beamsplitter_mirror 1 units='m'
diff --git a/10_simple_detection.kat b/10_simple_detection.kat
new file mode 100644
index 0000000..3d9150c
--- /dev/null
+++ b/10_simple_detection.kat
@@ -0,0 +1,4 @@
+#-----------------------------------------------------------------------
+# An Advanced Virgo Plus input file for Finesse 3
+
+readout_rf B1 BS_S_AR.p3.o output_detectors=True
diff --git a/10_simple_laser.kat b/10_simple_laser.kat
index 0a3066b..6841beb 100644
--- a/10_simple_laser.kat
+++ b/10_simple_laser.kat
@@ -1,4 +1,4 @@
 #-----------------------------------------------------------------------
 # An Advanced Virgo Plus input file for Finesse 3
 
-laser L1 P=power
+laser L1 P=power f=frequency
diff --git a/10_simple_mirror.kat b/10_simple_mirror.kat
index 7ef0e13..df7e825 100644
--- a/10_simple_mirror.kat
+++ b/10_simple_mirror.kat
@@ -1,8 +1,8 @@
 #-----------------------------------------------------------------------
 # An Advanced Virgo Plus input file for Finesse 3
 
-mirror M1    R=M1_R    T=M1_T    Rc=M1_Rc
-mirror M1_AR R=M1_AR_R T=M1_AR_T Rc=M1_AR_Rc
+mirror M1    R=M1_R    T=M1_T   
+mirror M1_AR R=M1_AR_R T=M1_AR_T
 
 space inside_M1 M1.p2 M1_AR.p1 L=M1_width nr=silica
 
diff --git a/25_link_simple_beamsplitter_detection.kat b/25_link_simple_beamsplitter_detection.kat
new file mode 100644
index 0000000..8ac4958
--- /dev/null
+++ b/25_link_simple_beamsplitter_detection.kat
@@ -0,0 +1,3 @@
+#-----------------------------------------------------------------------
+# An Advanced Virgo Plus input file for Finesse 3
+
diff --git a/25_link_simple_beamsplitter_mirror.kat b/25_link_simple_beamsplitter_mirror.kat
new file mode 100644
index 0000000..fba695c
--- /dev/null
+++ b/25_link_simple_beamsplitter_mirror.kat
@@ -0,0 +1,4 @@
+#-----------------------------------------------------------------------
+# An Advanced Virgo Plus input file for Finesse 3
+
+space space_BS_M1 BS_W_AR.p3 M1.p1 L=beamsplitter_mirror
diff --git a/25_link_simple_laser_beamsplitter.kat b/25_link_simple_laser_beamsplitter.kat
new file mode 100644
index 0000000..8554f4f
--- /dev/null
+++ b/25_link_simple_laser_beamsplitter.kat
@@ -0,0 +1,4 @@
+#-----------------------------------------------------------------------
+# An Advanced Virgo Plus input file for Finesse 3
+
+space space_L1_BS L1.p1 BS.p1 L=laser_beamsplitter