diff --git a/script/Alignment/Gun_solenoid_alignment.py b/script/Alignment/Gun_solenoid_alignment.py
index 7b8c137..07abcc4 100755
--- a/script/Alignment/Gun_solenoid_alignment.py
+++ b/script/Alignment/Gun_solenoid_alignment.py
@@ -15,14 +15,14 @@ camera_name = "SINEG01-DSCR190"
 use_good_region=False
 
 if get_exec_pars().source == CommandSource.ui:
-    I1 = 95.0
-    I2 = 100.0
+    I1 = 100.0
+    I2 = 105.0
     dI = 1.0
     settling_time = 0.1
     plot_image = False    
     number_images = 5
     use_background = True
-    multiple_background = False
+    multiple_background = True
     number_backgrounds = 5
     do_elog = False    
     centroid_excursion_plot = True
@@ -102,7 +102,7 @@ else:
 if centroid_excursion_plot:
     (hx,hy)=add_convex_hull_plot ("Centroid excursion", r.getReadable(0),r.getReadable(1), plot_name)
 else:   
-    (hx,hy)= convex_hull(x=r.getReadable(0), y=r.getReadable(1))
+    (hx,hy)= convex_hull(x=to_array(r.getReadable(0), 'd'), y=to_array(r.getReadable(1),'d'))
     hx.append(hx[0]); hy.append(hy[0])        
 
 # save the entry in the logbook
diff --git a/script/Alignment/Laser_gun_alignment.py b/script/Alignment/Laser_gun_alignment.py
index e0765fa..821e93b 100755
--- a/script/Alignment/Laser_gun_alignment.py
+++ b/script/Alignment/Laser_gun_alignment.py
@@ -28,7 +28,8 @@ if get_exec_pars().source == CommandSource.ui:
     centroid_excursion_plot = True
 else:    
     centroid_excursion_plot = False
-    
+
+kill_camtool()    
 check_camtool()
     
 laser_was_on = is_laser_on()
@@ -87,8 +88,7 @@ try:
     r = lscan(gun_phase, sensors , phi1, phi2, dphi, settling_time, before_read = before_sample, after_read = after_sample)
 finally:
     if mode == "camtool": camtool.stop()
-
-gun_phase.write(original_phase)
+    gun_phase.write(original_phase)
 if laser_was_on:
     laser_on()
 else:
@@ -98,10 +98,10 @@ else:
 if centroid_excursion_plot:
     (hx,hy)=add_convex_hull_plot ("Centroid excursion", r.getReadable(0),r.getReadable(1), plot_name)
 else:   
-    (hx,hy)= convex_hull(x=r.getReadable(0), y=r.getReadable(1))
+    (hx,hy)= convex_hull(x=to_array(r.getReadable(0), 'd'), y=to_array(r.getReadable(1),'d'))
     hx.append(hx[0]); hy.append(hy[0])        
 
-
+print "Done"
 # save the entry in the logbook
 gsa_log_msg = "Data file: " + get_exec_pars().path
 gsa_log_msg = gsa_log_msg + "\nImages: " + str(number_images) + " Background: enabled=" + str(use_background) + " multiple="  + str(multiple_background) + " number="  + str(number_backgrounds)