75 lines
1.9 KiB
Python
75 lines
1.9 KiB
Python
"""
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automated sample finder (EXPERIMENTAL)
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"""
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import math
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# --- do not edit below ---
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RELATIVE = False
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LATENCY = 0.0
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ZIGZAG = False
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ENDSCAN = False
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START_POS = 0.0
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adjust_sensors()
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set_adc_averaging()
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SENSORS = (Counts, SampleCurrent, RefCurrent, MachineCurrent)
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MOTORS = ManipulatorY
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RANGE = (START_POS + 5., START_POS - 5.)
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Scienta.setExposure(0.5)
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scienta_time = 3.75
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print "scienta time: ", scienta_time
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STEP = 0.2
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SPEED = STEP / scienta_time
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fly_time = abs(RANGE[1] - RANGE[0]) / SPEED
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STEPS = int(fly_time / scienta_time) + 1
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print "coarse scan"
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print "speed: ", SPEED
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print "scan time: ", fly_time
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set_exec_pars(keep=True)
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result = cscan(MOTORS, SENSORS, RANGE[0], RANGE[1], STEPS, time=fly_time, before_read=before_readout, after_read = after_readout, check_positions = False)
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readable = result.getReadable(0)
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positions = result.getPositions(0)
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min_counts = min(readable)
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max_counts = max(readable)
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thresh = (max_counts - min_counts) / 2. + min_counts
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print "threshhold: ", thresh
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sample_positions = [pos for idx, pos in enumerate(positions) if readable[idx] >= thresh]
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lo_edge = min(sample_positions)
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hi_edge = max(sample_positions)
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print "lower edge, upper edge: ", lo_edge, ", ", hi_edge
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RANGE = (lo_edge - 0.4, lo_edge + 0.4)
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STEP = 0.01
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SPEED = STEP / scienta_time
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fly_time = abs(RANGE[1] - RANGE[0]) / SPEED
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STEPS = int(fly_time / scienta_time) + 1
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print "lower edge scan"
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print "speed: ", SPEED
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print "scan time: ", fly_time
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cscan(MOTORS, SENSORS, RANGE[0], RANGE[1], STEPS, time=fly_time, before_read=before_readout, after_read = after_readout, check_positions = False)
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RANGE = (hi_edge - 0.4, hi_edge + 0.4)
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STEP = 0.01
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SPEED = STEP / scienta_time
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fly_time = abs(RANGE[1] - RANGE[0]) / SPEED
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STEPS = int(fly_time / scienta_time) + 1
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print "upper edge scan"
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print "speed: ", SPEED
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print "scan time: ", fly_time
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cscan(MOTORS, SENSORS, RANGE[0], RANGE[1], STEPS, time=fly_time, before_read=before_readout, after_read = after_readout, check_positions = False)
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