37 lines
994 B
Python
37 lines
994 B
Python
#Parameters
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"""
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B1 = 20 # starting mag. field in Amps
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B2 = -20 # final mag. field in Amps
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BSTEP = -0.5 # step size mag. field in Amps
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FIELD_PRECISION = 0.05 # in Amps
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FIELD_CHANGE_SLEEP = 0.0 # put the Field settling time if needed
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"""
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# List of scans. Each scan is defined as: (start,stop, step)
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# to make a whole loop two scans are needed: [(B1, B2, BSTEP),(B2,B1,-BSTEP)]
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# to make half of a loop one scan is needed: [(B1, B2, BSTEP),] <- don't forget to put comma before ]
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RANGES = [(B1, B2, BSTEP),(B2,B1,-BSTEP)]
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setpoints = []
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for r in RANGES:
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setpoints = setpoints + frange(r[0], r[1], r[2], True)
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# Main loop
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for B in setpoints:
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print "Setting field = ", B
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caput("X11MA-XMCD:I-SETraw",B)
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time.sleep(FIELD_CHANGE_SLEEP ) # Settling time
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readback1 = caget("X11MA-XMCD:Ireadout")
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while abs(readback1-B) > FIELD_PRECISION:
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readback1 = caget("X11MA-XMCD:Ireadout")
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time.sleep(0.5)
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run("Energy_MagScan.py")
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