diff --git a/script/RefocusYRotScan.py b/script/RefocusYRotScan.py
index e8981118..de3d413b 100644
--- a/script/RefocusYRotScan.py
+++ b/script/RefocusYRotScan.py
@@ -13,8 +13,8 @@ STEPS = 20
 LATENCY = 0.5
 ENDSCAN = True
 
-global MOTORS = (RefocusYRot)
-global SENSORS = (Counts, SampleCurrent, RefCurrent, MachineCurrent, EnergyDistribution, AngleDistribution)
+MOTORS = (RefocusYRot)
+SENSORS = (Counts, SampleCurrent, RefCurrent, MachineCurrent, EnergyDistribution, AngleDistribution)
 STARTPOS = (-DISTANCE / 2.0)
 ENDPOS = (DISTANCE / 2.0)
 RELATIVE = True
@@ -22,8 +22,13 @@ RELATIVE = True
 adjust_sensors()
 set_adc_averaging()
 
+def trig_sensors():
+    wait_beam()
+    trig_scienta()
+    caput("X03DA-OP-10ADC:TRG.PROC", 1)
+    
 try:
-    lscan(MOTORS, SENSORS, STARTPOS, ENDPOS, STEPS, LATENCY, RELATIVE, before_read=before_readout, after_read = after_readout)
+    lscan(MOTORS, SENSORS, STARTPOS, ENDPOS, STEPS, LATENCY, RELATIVE, before_read=trig_sensors, after_read = after_readout)
 finally:
     if ENDSCAN:
         after_scan()