diff --git a/script/Alignment/Optimization_search.py b/script/Alignment/Optimization_search.py
index 7433834..5138ba1 100644
--- a/script/Alignment/Optimization_search.py
+++ b/script/Alignment/Optimization_search.py
@@ -1,16 +1,17 @@
 ################################################################################################### 
 # Using bsearch(Binary Search) and hsearch(Hill Climbing Search) to find optimum
 ################################################################################################### 
-
run("camtool")
-add_device(CamTool("image_stats",  prefix = "SINEG01-DSCR190:", latch = True, camera = "SINEG01-DSCR190"), True)
 
-image_stats.start()
-image_stats.setNumberOfImages(5)
-laser_off()   
-image_stats.captureBackground(10)
-laser_on()   
-image_stats.setNumberOfImages(5)
-image_stats.enableBackground
(True)
+if get_device("camtool") is None:
+    
run("camtool")
+    add_device(CamTool("image_stats",  prefix = "SINEG01-DSCR190:", latch = True, camera = "SINEG01-DSCR190"), True)
+    image_stats.start()
+    image_stats.setNumberOfImages(5)
+    laser_off()   
+    image_stats.captureBackground(10)
+    laser_on()   
+    image_stats.setNumberOfImages(5)
+    image_stats.enableBackground
(True)
 
 
 def before_sample():