79 lines
2.6 KiB
Python
79 lines
2.6 KiB
Python
###################################################################################################
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#
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###################################################################################################
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tc1 = caget('X06DA-OP-MO:TC1') # theta1 thermo couple 1
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energy = get_energy() # Mono energy
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dtz = caget('X06DA-ES-DET:TRZ1') # detector Z- position
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if current.read() < 200:
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raise Exception ('Ring current too low')
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if caget('X06DA-FE-AB1:OPEN_EPS','i') == 0:
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raise Exception ('FrontEndAbsorber closed') # FrontEnd absorber shutter state
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if caget('X06DA-FE-PH1:OPEN_EPS','i') == 0: # FrontEnd shutter state
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raise Exception ('FrontEndShutter closed')
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if caget('X06DA-OP-ST1:OPEN_EPS','i') == 0: # ExpHutch shutter state
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raise Exception ('ExpHutchShutter closed ')
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if caget(('X06DA-OP-MO:E-GET'),'d') > 17.5: #Mono energy
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raise Exception ('Sorry, no feedback above 17.5 keV for now')
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tc = 40 # 2015.09.20 quick fix by MT JW
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cur = caget('X06DA-ES-BPM1:SUM','d')
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op1 = caget('X06DA-OP-XPM1:CHAN1', 'd')
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if op1 < 1.0:
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sete_failed = 1
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raise Exception ('X06DA-OP-XPM1:CHAN1 < 10 - please check monochromator, frontend, primary slits, ring current and undulator - program exits')
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# define max deviations
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dmx = 14.0 # 2 x distance mirror HR-XBPM
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ymax = 2e-3 # endwhile criterion for vertical correction
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if cur < tc: #check if beam is on CVD-XBPM
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sete_failed = 1
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raise Exception ('evere problem - NO BEAM ON HR-DIFFRACTOMETER XBPM')
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# initial mirror TRY3 position
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y3i = try3.read()
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print "initial y3i: " + str(y3i)
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# how much beam is off?
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by = bpm1.read()
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print "EBOX-POSV before rock: " + str(by)
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# if beam is not off, do nothing
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if abs(by) > ymax:
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rock(th1)
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# result of ROCK
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time.sleep(2.0)
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by = bpm1.read()
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print "EBOX-POSV after rock: " + str(by)
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# feedback
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while abs(by) >= ymax :
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by = bpm1.read()
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print "current EBOX-POSV: " + str(by)
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cur = caget('X06DA-ES-BPM1:SUM','d')
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if cur > tc:
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ehs = caget('X06DA-OP-ST1:OPEN_EPS','i') # make sure that shutter is open
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if (ehs > 0) and (abs(by) > ymax):
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if abs(by) > (50*ymax):
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raise Exception ('TODO')
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#limit mirror TRY3 movement
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y3 = try3.read()
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if abs(y3i - y3 - 1e-4 * round(by/1e-3)) > 0.008:
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raise Exception ('Feedback trying to move mirror Y3 beyond safe limit')
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try3.moveRel(-1e-4 * round(by/1e-3))
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print "current X06DA-OP-MI1:TRY3: ", y3
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time.sleep(0.25)
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print "TRY3 net movement: " + str(y3i-try3.read()) #print how much TRY3 moved
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