Script execution

script/QueuedHoloScan.py

@@ -0,0 +1,115 @@
+"""
+parametric holo scan of one spectral regions for pshell queue
+
+parameters:
+
+phi_range: (tuple (min, max)) defaults to hard-coded PHI_RANGE
+theta_range: (tuple (min, max)) defaults to hard-coded THETA_RANGE
+steps: (tuple (phi, theta)) defaults to hard-coded STEPS
+
+region: (dict)
+  optional items can be left unspecified and will default to the indicated values.
+  for swept mode, include 'elo', 'ehi', 'estep', 'iter' values, but do not include 'efix'.
+  for fixed mode, include 'efix' value, but do not include 'elo', 'ehi', 'estep', 'iter'.
+
+  'name': user-specific name of the region
+  'elo': lower kinetic energy boundary of the spectrum
+  'ehi': upper kinetic energy boundary of the spectrum
+  'estep': energy step size
+  'efix': center kinetic energy in fixed mode
+  'epass': pass energy
+  'ephot': photon energy (default: unchanged)
+  'tstep': dwell time in seconds
+  'iter': number of iterations/sweeps (default 1)
+  'slit': exit slit (default: unchanged)
+
+motors: (sequence, optional) position devices
+sensors: (sequence, optional) sensor devices
+"""
+
+MOTORS = (ManipulatorPhi, ManipulatorTheta)
+SENSORS = (Counts, SampleCurrent, RefCurrent, MachineCurrent, EnergyDistribution, AngleDistribution, Scienta.dataMatrix)
+
+PHI_RANGE = (-170.0, 170.0) # (tuple (min, max))
+THETA_RANGE = (-9.5, 80.5) #  (tuple (min, max))
+STEPS = (40.0, 1.0) # (tuple (phi, theta))
+ZIGZAG = True
+positions = [(PHI_RANGE[0], THETA_RANGE[0]), (PHI_RANGE[1], THETA_RANGE[1]), STEPS]
+LATENCY=0.0
+
+REGION = {'name': 'Tb 4d', 'elo': 892.5, 'ehi': 899.0, 'estep': 0.1, 'epass': 50., 'tstep': 0.8, 'iter': 1}
+
+# close beam shutter and turn off analyser at the end of the scan
+CLOSE_SHUTTER_AT_END = False
+
+
+# --- DO NOT EDIT BELOW THIS LINE! ---
+
+set_exec_pars(keep=False)
+set_exec_pars(compression=True)
+
+def check_region(region):
+    """
+    check region dictionary items and apply defaults where necessary
+    """
+    region['fixed'] = 'efix' in region
+    if region['fixed']:
+        region['elo'] = region['efix']
+        region['ehi'] = region['efix']
+    if 'iter' not in region:
+        region['iter'] = 1
+        
+def set_region(params):
+    try:
+        ephot = self.region['ephot']
+        Eph.move(ephot)
+    except KeyError:
+        ephot = Eph.take(100)
+
+    elo = self.region['elo']
+    ehi = self.region['ehi']
+
+    if self.region['fixed']:
+        Scienta.setAcquisitionMode(ch.psi.pshell.epics.Scienta.AcquisitionMode.Fixed)
+        Scienta.centerEnergy.write(elo)
+    else:
+        Scienta.setAcquisitionMode(ch.psi.pshell.epics.Scienta.AcquisitionMode.Swept)
+        Scienta.lowEnergy.write(elo)
+        Scienta.highEnergy.write(ehi)
+        Scienta.stepSize.write(self.region['estep'])
+
+    try:
+        Scienta.setPassEnergy(int(self.region['epass']))
+    except KeyError:
+        pass
+
+    try:
+        Scienta.stepTime.write(self.region['tstep'])
+    except KeyError:
+        pass
+
+    try:
+        Scienta.setIterations(self.region['iter'])
+    except KeyError:
+        pass
+
+    try:
+        ExitSlit.write(self.region['slit'])
+    except KeyError:
+        pass
+        
+    Scienta.update()
+        
+
+# main
+
+check_region(region)
+set_region(region)
+adjust_sensors()
+set_adc_averaging()
+
+try:
+    ascan(motors, sensors, positions[0], positions[1], positions[2], latency, False, zigzag=zigzag, before_read=before_readout, after_read = after_readout, check_positions=False)
+finally:
+    if CLOSE_SHUTTER_AT_END:
+        after_scan()