38 lines
1.0 KiB
Python
38 lines
1.0 KiB
Python
#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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#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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gun_sol_I = Channel("SINEG01-MSOL130:I-SET")
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center_x, center_y = ... # some camtool command or channel?
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bpm_x = Channel("SINEG01-DBPM340:X1")
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bpm_y = Channel("SINEG01-DBPM340:Y1")
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start_I = 20
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end_I = 150
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step_I = 1
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# Enable gun laser
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caput("SIN-CVME-TIMAST-TMA:Beam-laser-On", 1)
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#Scan using the screen
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r = lscan(gun_sol_I, [center_x, center_y], start_I, end_I, step_I, latency = 0.5)
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#Scan using the BPM
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#r = lscan(gun_sol_current, [bpm_x, bpm_y], start_I, end_I, step_I, latency = 0.5)
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# Disable gun laser
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caput("SIN-CVME-TIMAST-TMA:Beam-laser-On", 0)
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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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plot(y, xdata=x, title = "CM")
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#I save the entry in the logbook
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