Script execution

script/users/PhotonEnergyManipulator.py

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+"""
+photon energy (resonance) scan with parallel manipulator movement
+(to distribute exposure over sample)
+
+Arguments:
+
+VECTOR (Double[][], Scan vector: Eph,Elow,Ehigh or Eph,Ecenter)
+SENSORS (list)
+LATENCY (double)
+MODE ('fixed' or 'swept')
+TYPE ('CIS' or 'CFS')
+STEP (double)
+ENDSCAN
+"""
+
+SENSORS = (Scienta.spectrum, Scienta.dataMatrix, Counts, SampleCurrent, RefCurrent, MachineCurrent)
+LATENCY = 1.0
+MODE = 'swept'
+ENDSCAN = True
+
+# photon energy scan range
+EPHOT_LO = 625.
+EPHOT_HI = 630.
+EPHOT_STEP = 1.
+
+# energy range of first spectrum
+EKIN_LO = 100.
+EKIN_HI = 110.
+EKIN_STEP = 0.1
+# 'CIS' = constant initial state (binding energy), 'CFS' = constant final state (kinetic energy)
+TYPE = 'CFS'
+
+# manipulator range
+MANIP_START = 116.4
+MANIP_END = 116.6
+
+
+### do not edit below
+
+NSTEPS = round((EPHOT_HI - EPHOT_LO) / EPHOT_STEP) + 1
+EPHOT_STEP = (EPHOT_HI - EPHOT_LO) / (NSTEPS - 1)
+
+ephot = [EPHOT_LO + EPHOT_STEP * i for i in range(NSTEPS)]
+if TYPE == 'CIS':
+    eshift = [EPHOT_STEP * i for i in range(NSTEPS)]
+else:
+    eshift = [0.] * NSTEPS
+ekin_lo = [EKIN_LO + eshift[i] for i in range(NSTEPS)]
+ekin_hi = [EKIN_HI + eshift[i] for i in range(NSTEPS)]
+
+MANIP_STEP = (MANIP_END - MANIP_START) / (NSTEPS - 1)
+manip_z = [MANIP_START + MANIP_STEP * i for i in range(NSTEPS)]
+
+if MODE == "swept":
+    VECTOR = [[ephot[i], ekin_lo[i], ekin_hi[i], manip_z[i]] for i in range(NSTEPS)]
+    Scienta.setAcquisitionMode(ch.psi.pshell.epics.Scienta.AcquisitionMode.Swept)
+    Scienta.centerEnergy.write(VECTOR[0][1])
+    writables = (Eph, Scienta.centerEnergy, ManipulatorZ)
+else:
+    VECTOR = [[ephot[i], ekin_lo[i], manip_z[i]] for i in range(NSTEPS)]
+    Scienta.setAcquisitionMode(ch.psi.pshell.epics.Scienta.AcquisitionMode.Fixed)
+    Scienta.lowEnergy.write(VECTOR[0][1])
+    Scienta.highEnergy.write(VECTOR[0][2])
+    writables = (Eph, Scienta.lowEnergy, Scienta.highEnergy, ManipulatorZ)
+
+
+adjust_sensors()
+set_adc_averaging()
+set_preference(Preference.PLOT_TYPES, {'Scienta spectrum':1})
+
+try:
+    vscan(writables, SENSORS, VECTOR, True, LATENCY,False, before_read=before_readout, after_read = after_readout)
+finally:
+    if ENDSCAN:
+        after_scan()