add channels for shim coils (for bias fields)

lib/system.py

@@ -36,6 +36,9 @@ CONNECTIONS = ConnectionLayout(
     mot3_coils_onoff    = Digital(0,  2, 1),
     mot3_coils_cur      =  Analog(0,  3.45),
     mot3_coils_vol      =  Analog(1,  7.00),
+    shim_coils_ud       =  Analog(2,  0.00),
+    shim_coils_fb       =  Analog(3,  0.00),
+    shim_coils_lr       =  Analog(4,  0.00),
     mot3_coils_igbt     = Digital(0,  4, 1),
     mot3_shims_onoff    = Digital(0,  0, 0),
     mot3_blue_sh        = Digital(1,  7, 1),
@@ -44,7 +47,8 @@ CONNECTIONS = ConnectionLayout(
     push_aom            = Digital(0,  3, 1),
     push_sh             = Digital(1,  3, 1),
     probe_aom           = Digital(0,  5, 0),
-    #probe_sh            = Digital(1,  5, 0),
+    probe_sh            = Digital(1,  1, 0),
+    raman_green         = Digital(0, 11, 0),   
     flir_trig           = Digital(3,  0, 0),
     andor_trig          = Digital(3,  4, 0),
     andor_sh            = Digital(3,  6, 0),