56 lines
1.6 KiB
Python
56 lines
1.6 KiB
Python
#Tool to align the laser on the cathode.
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# S. Bettoni, A. Gobbo, D. Voulot
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#30/05/2016
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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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I = Channel("SINEG01-MSOL130:I-SET")
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cam_x, cam_y = ... # some camtool command / 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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def CheckI():
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n = 1
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while n > 0:
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n = caget("SINEG01-MSOL130:I-COMP")
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I1 = 20.0
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I2 = 150.0
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dI = 1.0
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# Switch off magnets
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caput("SINEG01-MCRX120:I-SET", 0.0)
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caput("SINEG01-MCRY120:I-SET", 0.0)
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caput("SINEG01-MQUA140:I-SET", 0.0)
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caput("SINEG01-MQUA150:I-SET", 0.0)
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caput("SINEG01-MCRX160:I-SET", 0.0)
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caput("SINEG01-MCRY160:I-SET", 0.0)
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caput("SINEG01-MCRX180:I-SET", 0.0)
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caput("SINEG01-MCRY180:I-SET", 0.0)
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# Disable laser delay
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caput("SIN-CVME-TIMAST-TMA:LaserDelayControl", 0)
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#Scan using the screen
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#r = lscan(I, [cam_x, cam_y], I1, I2, dI, passes = 2, zigzag = True, before_read = CheckI)
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#Scan using the BPM
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r = lscan(I, [bpm_x, bpm_y], I1, I2, dI, passes = 2, zigzag = True, before_read = CheckI)
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# Enable laser delay
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caput("SIN-CVME-TIMAST-TMA:LaserDelayControl", 1)
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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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msg = str(r)
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msg = msg + "\nFile: " + get_context().path
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msg = msg + "\n\n" + r.print()
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elog("Gun solenoid current scan", msg , get_plot_snapshots())
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