89 lines
2.2 KiB
Python
89 lines
2.2 KiB
Python
def error(msg):
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caput(beam_err, (msg[:40]) if len(msg) > 40 else msg)
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raise Exception (msg)
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#def sete(e, all=True, wavelengt=False):
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e = 0
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all = False
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wavelengt = False
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beam_err = BEAMLINE_XNAME + '-ES-DAQ:BEAM-ERROR'
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beam_set = BEAMLINE_XNAME + '-ES-DAQ:BEAM-SET'
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ring_current_cutoff = 300.0
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if wavelength:
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e = 12.39842/e
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if e < 4.7 or e > 17.5:
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error('ERROR:Energy out of range: 4.7 to 17.5 keV')
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print time.strftime('%X %x')
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print '... Setting energy to '+ str(e) +' keV.'
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msg = 'Working... (aiming @ '+ str(e) +' keV)'
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caput(beam_err, (msg[:40]) if len(msg) > 40 else msg)
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if caget('ALIRF-GUN:CUR-LOWLIM', 'd') < ring_current_cutoff:
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error('ERROR:Current is too low: < ' + str(ring_current_cutoff) + 'mA')
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if caget('X06DA-FE-AB1:CLOSE_EPS') == 'CLOSE':
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error('ERROR:ABSORBER closed; aborting...')
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if caget('X06DA-FE-PH1:OPEN_EPS') != "OPEN":
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error('ERROR:FE Shutter closed; aborting...')
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e0 = get_energy(False);
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dE = abs(e-e0)
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print '... started to move monochromator motors'
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print '... alignment will take some minutes '
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act = 0
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# do a setenergy to move theta 1 and 2 to calculated position in case they are not synchronized.
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theta1 = caget('X06DA-OP-MO1:ROX1.RBV', 'd')
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etheta1 = A2E(abs(theta1),1,1,1,True)
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theta2 = caget('X06DA-OP-MO1:ROX2.RBV', 'd')
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etheta2 = A2E(ABS(theta2),1,1,1,True)
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if abs (etheta1-etheta2) > 0.01:
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set_energy(e)
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while abs(e-e0) > 3e-5/tan(angle(e)):
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set_energy(e)
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e0 = get_energy(False)
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#----- correcting theta2 if intensity is low or if the encoder -----
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#----- differs by more than rocking curve width from theory --------
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# -------- for sete, /all, remove all filters
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if all:
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caput('X06DA-ES-FI1:SET',0)
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caput('X06DA-ES-FI2:SET',0)
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caput('X06DA-ES-FI3:SET',0)
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caput('X06DA-ES-FI4:SET',0)
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time.sleep(0.5)
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#-------- rock FIRST crystal until its peak is reached -------------
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ff = 1
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while ff:
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def rock(axis = th1, ffail = False, tt = 0.2, seti0 = False, dx = None, noref = False):
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rock() #TODO: #ROCK,1,dt = (dE>1.)*4e-2/e,ffail=ff
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# finer final rock
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time.sleep(1.0)
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print 'FINER FINAL ROCK'
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rock()
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e0 = get_energy()
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caput('X06DA-OP-MO:E-GET',e0)
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print e0
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print ''
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print caget('X06DA-OP-MO:E-GET')
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caput(beam_err, 'Finito')
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caput(beam_set, 'DONE')
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print 'sete_done' |