37 lines
1.2 KiB
Python
Executable File
37 lines
1.2 KiB
Python
Executable File
#Tool to align the laser on the cathode.
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# S. Bettoni, A. Gobbo, D. Voulot
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#10/05/2016
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from operator import sub
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#Procedure:
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#I switch off all the magnets between the gun solenoid and the screen or BPM used for the measurement
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#I change the current of the gun soleoid
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#I look at the centroid position (BPM or screen) downstream of the gun.
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#TO BE PUT THE SIGNAL I-READ IN THE DEVICE DEFINITION GUN SOLENOID
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#caput("shutter:state", Closed)
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start_I = 0.001 #20
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end_I = 0.005 #150
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step_I = 0.001 #1
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#Scan using the screen
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r = lscan(gun_sol_current, [center_x, center_y], start_I, end_I, step_I, latency = 0.2)
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#Scan using the BPM
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#r = lscan(gun_sol_current, bpm_1_down_gun, start_I, end_I, step_I, latency = 0.2)
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#I take the result of the scan and I do the plots
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x = r.getReadable(0)
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y = r.getReadable(1)
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p = plot(y, xdata=x, title = "CM")
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yerr = 0.1
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xerr = 0.5
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#I save the entry in the logbook
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#elog(title, message, attachments = [], author = None, category = "Info", domain = "", logbook = "SwissFEL commissioning data", encoding=1):
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#elog("Test Simona", "message", author = "Simona", get_plot_snapshots(), logbook = "SwissFEL commissioning data", encoding=1)
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