119 lines
3.9 KiB
Python
Executable File
119 lines
3.9 KiB
Python
Executable File
# Tool to align the solenoid on the gun.
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# S. Bettoni, A. Gobbo, D. Voulot
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# 06/06/2016
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#Code ok with the GUI
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# Procedure:
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# switch off all the magnets between the gun solenoid and the screen or BPM used for the measurement
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# change the current of the gun soleoid
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# look at the centroid position (BPM or screen) downstream of the gun.
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import datetime
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mode = "camtool" # "camtool", "bpm" or "direct"
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camera_name = "SINEG01-DSCR190"
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use_good_region=False
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if get_exec_pars().source == CommandSource.ui:
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phi1= 95.0
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phi2 = 100.0
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dphi = 1.0
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settling_time = 0.1
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plot_image = False
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number_images = 5
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use_background = True
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multiple_background = False
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number_backgrounds = 5
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do_elog = False
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centroid_excursion_plot = True
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else:
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centroid_excursion_plot = False
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kill_camtool()
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check_camtool()
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laser_was_on = is_laser_on()
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original_phase = gun_phase.read()
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multiple_background = multiple_background and use_background
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print "Parameters: ", phi1, phi2, dphi, settling_time, plot_image, number_images, use_background, multiple_background, number_backgrounds
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plot_name = datetime.datetime.fromtimestamp(time.time()).strftime('%H%M%S')
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if mode == "camtool":
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if use_background:
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laser_off()
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if not multiple_background:
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camtool.stop()
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camtool.grabBackground(camera_name, number_backgrounds)
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camtool.start(camera_name, 0, use_background, None, 0.0, None)
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else:
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if mode == "bpm":
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add_device(BpmStats("image_stats", camera_name), True)
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else:
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add_device(ImageStats(PsiCamera("image_stats", camera_name)), True)
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multiple_background = False
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use_background = False
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image_stats.setNumberOfImages(max(number_images,1))
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#switch_off_magnets()
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# add here gun phase setting see wiki page
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def before_sample():
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if mode == "camtool":
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if multiple_background:
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camtool.stop()
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camtool.grabBackground(camera_name, number_backgrounds)
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camtool.start(camera_name, 0, use_background, None, 0.0, None)
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laser_on()
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wait_camtool_message(number_images) #Wait filing the averager cache
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else:
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image_stats.update()
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def after_sample():
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if multiple_background:
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laser_off()
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r = None
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if not multiple_background:
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laser_on()
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try:
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if mode != "camtool":
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sensors = [image_stats.com_x_mean, image_stats.com_y_mean, image_stats.com_x_stdev, image_stats.com_y_stdev]
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else:
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sensors = get_camtool_stats(number_images, good_region=use_good_region)
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if plot_image:
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sensors.append(camtool.getDataMatrix())
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r = lscan(gun_phase, sensors , phi1, phi2, dphi, settling_time, before_read = before_sample, after_read = after_sample)
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finally:
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if mode == "camtool": camtool.stop()
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gun_phase.write(original_phase)
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if laser_was_on:
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laser_on()
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else:
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laser_off()
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# take the result of the scan and generate convex hull plot
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if centroid_excursion_plot:
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(hx,hy)=add_convex_hull_plot ("Centroid excursion", r.getReadable(0),r.getReadable(1), plot_name)
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else:
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(hx,hy)= convex_hull(x=to_array(r.getReadable(0), 'd'), y=to_array(r.getReadable(1),'d'))
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hx.append(hx[0]); hy.append(hy[0])
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print "Done"
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# save the entry in the logbook
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gsa_log_msg = "Data file: " + get_exec_pars().path
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gsa_log_msg = gsa_log_msg + "\nImages: " + str(number_images) + " Background: enabled=" + str(use_background) + " multiple=" + str(multiple_background) + " number=" + str(number_backgrounds)
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gsa_log_msg = gsa_log_msg + "\nPhase range: " + str(phi1) + " to " + str(phi2)
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gsa_log_msg = gsa_log_msg + "\nLaser position on cathod: " + str(caget("SLG-LCAM-C103:FIT-XPOS")) + "/" + str(caget("SLG-LCAM-C103:FIT-YPOS"))
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gsa_log_msg = gsa_log_msg + "\n\n" + r.print()
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if do_elog:
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elog("Laser alignment with phase scan", gsa_log_msg , get_plot_snapshots())
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set_return([r, hx, hy])
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