New ScreenPanel

script/TestAlignmentScan.py

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+# Tool to align the solenoid on the gun.
+# S. Bettoni, A. Gobbo, D. Voulot
+# 06/06/2016
+#Code ok with the GUI
+
+# Procedure:
+    # switch off all the magnets between the gun solenoid and the screen or BPM used for the measurement
+    # change the current of the gun soleoid
+    # look at the centroid position (BPM or screen) downstream of the gun.
+
+import datetime
+
+mode = "camtool"  # "camtool", "bpm" or "direct"
+camera_name = "simulation"
+#camera_name = "SLG-LCAM-C041"
+use_good_region=False
+
+if True: #get_exec_pars().source == CommandSource.ui:
+    I1 = 95.0
+    I2 = 100.0
+    dI = 1.0
+    settling_time = 0.1
+    plot_image = False    
+    number_images = 3
+    use_background = False
+    multiple_background = True
+    number_backgrounds = 3
+    do_elog = False    
+    centroid_excursion_plot = True
+else:
+    centroid_excursion_plot = False
+
+#check_camtool()
+
+#laser_was_on = is_laser_on()
+positioner = DummyPositioner("positioner")
+
+original_gun_solenoid = positioner.read()
+    
+
+multiple_background = multiple_background and use_background   
+print "Parameters: ", I1, I2, dI, settling_time, plot_image, number_images, use_background, multiple_background, number_backgrounds 
+
+plot_name = datetime.datetime.fromtimestamp(time.time()).strftime('%H%M%S')
+
+if mode == "camtool":    
+    if use_background:    
+        #laser_off()
+        if not multiple_background:
+            camtool.stop()
+            camtool.grabBackground(camera_name, number_backgrounds)
+    #camtool.stop()
+    #camtool.startPipeline(camera_name, 0, use_background, None, 0.0, None)
+    #camtool.startReceiver();
+    camtool.start(camera_name, 0, use_background, None, 0.0, None)
+    if  camtool.value is not None:  print "Started " , camtool.value.getTimestamp()
+    wait_camtool_message()
+    print "OK"
+else:
+    if mode == "bpm":
+        add_device(BpmStats("image_stats", camera_name), True)
+    else:
+        add_device(ImageStats(PsiCamera("image_stats", camera_name)), True)
+    multiple_background = False
+    use_background = False
+    image_stats.setNumberOfImages(max(number_images,1))
+
+#switch_off_magnets()
+
+# add here gun phase setting see wiki page
+def before_sample():    
+    if mode == "camtool":
+        if multiple_background:
+            camtool.stop()
+            camtool.grabBackground(camera_name, number_backgrounds)
+            camtool.start(camera_name, 0, use_background, None, 0.0, None)
+            #laser_on()            
+        wait_camtool_message(number_images)    #Wait filing the averager cache     
+    else:
+        image_stats.update()
+    
+def after_sample():
+    if multiple_background:
+        #laser_off()    
+        pass
+     
+r = None
+#if not multiple_background:
+#    laser_on()
+
+try:        
+    if mode == "camtool":
+        print "Getting sensors"
+        sensors = get_camtool_stats(number_images, good_region=use_good_region)
+        print "Sensors ok"        
+        if plot_image:
+            sensors.append(camtool.getDataMatrix()) 
+    else:
+        sensors = [image_stats.com_x_mean, image_stats.com_y_mean, image_stats.com_x_stdev, image_stats.com_y_stdev] 
+    r = lscan(positioner, sensors , I1, I2, dI, settling_time, before_read = before_sample, after_read = after_sample)
+finally:
+     if mode == "camtool": camtool.stop()
+     #pass
+
+positioner.write(original_gun_solenoid)
+#if laser_was_on:
+#    laser_on()
+#else:
+#    laser_off()
+
+
+# take the result of the scan and generate convex hull plot
+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.append(hx[0]); hy.append(hy[0])        
+
+# 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)
+gsa_log_msg = gsa_log_msg + "\nBackground: enabled=" + str(use_background) + " multiple="  + str(multiple_background) + " number="  + str(number_backgrounds) 
+gsa_log_msg = gsa_log_msg + "\n\n" + r.print()
+if do_elog:
+    elog("Gun solenoid current scan", gsa_log_msg , get_plot_snapshots())
+
+set_return([r, hx, hy])