Startup

script/Alignment/Gun_solenoid_alignment_dv.py

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+#Tool to align the laser on the cathode.
+# S. Bettoni, A. Gobbo, D. Voulot
+#10/05/2016
+
+
+#Procedure:
+    #I switch off all the magnets between the gun solenoid and the screen or BPM used for the measurement
+    #I change the current of the gun soleoid
+    #I look at the centroid position (BPM or screen) downstream of the gun.
+
+gun_sol_I = Channel("SINEG01-MSOL130:I-SET")
+center_x, center_y = ...       # some camtool command or channel?
+bpm_x = Channel("SINEG01-DBPM340:X1")
+bpm_y = Channel("SINEG01-DBPM340:Y1")
+
+start_I = 20
+end_I = 150
+step_I = 1
+
+# Enable gun laser
+caput("SIN-CVME-TIMAST-TMA:Beam-laser-On", 1)
+
+#Scan using the screen
+r = lscan(gun_sol_I, [center_x, center_y], start_I, end_I, step_I, latency = 0.5)
+#Scan using the BPM
+#r = lscan(gun_sol_current, [bpm_x, bpm_y], start_I, end_I, step_I, latency = 0.5)
+
+# Disable gun laser
+caput("SIN-CVME-TIMAST-TMA:Beam-laser-On", 0)
+
+#I take the result of the scan and I do the plots
+x = r.getReadable(0)
+y = r.getReadable(1)
+plot(y, xdata=x, title = "CM")
+
+#I save the entry in the logbook
+