# 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 is_panel = get_exec_pars().source != CommandSource.ui #Must be checked before callin "run" camera_name = "SINEG01-DSCR190" use_good_region=False do_elog = True if not is_panel: source = "camtool" # "camtool", "bpm" or "direct" phi1= 95.0 phi2 = 100.0 dphi = 1.0 settling_time = 0.1 plot_image = False number_images = 5 use_background = True multiple_background = False number_backgrounds = 5 plots = get_plots(title = "Centroid excursion") if len(plots)==0: centroid_plot = plot(None, title = "Centroid excursion")[0] centroid_plot.clear() else: centroid_plot = plots[0] centroid_plot_index = 1 if ((len(centroid_plot.getAllSeries()) == 0) or (not globals().has_key("centroid_plot_index"))) else (centroid_plot_index + 1) print "Plot index: ", centroid_plot_index centroid_plot.setLegendVisible(True) centroid_plot.setStyle(centroid_plot.Style.ErrorXY) centroid_plot.getAxis(centroid_plot.AxisId.Y).setLabel("") centroid_plot.getAxis(centroid_plot.AxisId.X).setLabel("Centroid Excursion") scan_series = LinePlotErrorSeries(str(centroid_plot_index)) centroid_plot.addSeries(scan_series) scan_series.setLinesVisible(False) scan_series.setPointSize(4) """ #Testing camera_name = "SLG-LCAM-C041" def laser_on(): print "Laser On" def laser_off(): print "Laser Off" def switch_off_magnets(magnets = None): pass add_device(DummyPositioner("gun_phase"), True) do_elog = False """ laser_was_on = is_laser_on() original_phase = gun_phase.read() multiple_background = multiple_background and use_background print "Parameters: ", phi1, phi2, dphi, settling_time, plot_image, number_images, use_background, multiple_background, number_backgrounds if source == "camtool": #kill_camtool() check_camtool() if use_background: laser_off() if not multiple_background: camtool.stop() camtool.grabBackground(camera_name, number_backgrounds) camtool.start(camera_name, 0, use_background, None, 0.0, None) else: if source == "bpm": run("Devices/BpmStats") add_device(BpmStats("image_stats", camera_name), True) multiple_background = False use_background = False else: run("Devices/ImageStats") add_device(ImageStats("image_stats", camera_name), True) add_device(image_stats.source, True) image_stats.enableBackground(use_background) if use_background: laser_off() if not multiple_background: image_stats.grabBackground(number_backgrounds) image_stats.setNumberOfImages(max(number_images,1)) #switch_off_magnets() # add here gun phase setting see wiki page def before_sample(position, scan): if source == "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: if multiple_background: image_stats.grabBackground(number_backgrounds) laser_on() image_stats.update() def after_sample(record, scan): x = record.values[0] y = record.values[1] stdev_x = record.values[2] stdev_y = record.values[3] if source == "camtool": #x, y, stdev_x, stdev_y = x.mean, y.mean, stdev_x.mean, stdev_y.mean x, y, stdev_x, stdev_y = x.mean, y.mean, x.stdev, y.stdev scan_series.appendData(x, y, abs(stdev_x), abs(stdev_y)); if multiple_background: laser_off() r = None if not multiple_background: laser_on() try: if source != "camtool": sensors = [image_stats.com_x_mean, image_stats.com_y_mean, image_stats.com_x_stdev, image_stats.com_y_stdev] if plot_image and (source == "direct"): sensors.append(image_stats.source.getDataMatrix()) else: sensors = get_camtool_stats(number_images, good_region=use_good_region) if plot_image: sensors.append(camtool.getDataMatrix()) r = lscan(gun_phase, sensors , phi1, phi2, dphi, settling_time, before_read = before_sample, after_read = after_sample) finally: if source == "camtool": camtool.stop() else: image_stats.stop() gun_phase.write(original_phase) if laser_was_on: laser_on() else: laser_off() # take the result of the scan and generate convex hull plot (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]) hx = Convert.toDouble(hx) hy = Convert.toDouble(hy) hull = LinePlotErrorSeries(scan_series.name + "H", scan_series.color); centroid_plot.addSeries(hull); hull.setData(hx, hy); #Include metadata do hdf5 path = get_exec_pars().scanPath set_attribute(path, "phi1", phi1) set_attribute(path, "phi2", phi2) set_attribute(path, "dphi", dphi) set_attribute(path, "Settling time", settling_time) set_attribute(path, "Images", number_images) set_attribute(path, "Background enabled", use_background) set_attribute(path, "Background multiple", multiple_background) set_attribute(path, "Background images", number_backgrounds) set_attribute(path, "Plot index", centroid_plot_index) # save the entry in the logbook if do_elog: if get_option("Generated data file:\n" + get_exec_pars().path +"\n\n" + "Save to ELOG?", "YesNo") == "Yes": log_msg = "Data file: " + get_exec_pars().path log_msg = log_msg + "\nI1: " + str(I1) log_msg = log_msg + "\nI2: " + str(I2) log_msg = log_msg + "\ndI: " + str(dI) log_msg = log_msg + "\nSettling time: " + str(settling_time) log_msg = log_msg + "\nImages: " + str(number_images) log_msg = log_msg + "\nBackground: enabled=" + str(use_background) + " multiple=" + str(multiple_background) + " number=" + str(number_backgrounds) log_msg = log_msg + "\nPlot index: " + str(centroid_plot_index) log_msg = log_msg + "\n\n" + r.print() sleep(0.1) #Give some time to plot to be finished - it is not sync with acquisition file_name = os.path.abspath(get_context().setup.getContextPath() + "/centroid_excursion.png") centroid_plot.saveSnapshot(file_name , "png") elog("Laser alignment with phase scan", log_msg, [file_name,])