316 lines
11 KiB
Python
316 lines
11 KiB
Python
"""
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Discrete scan (vector scan) of multiple spectral regions
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"""
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# scan positioner: Eph = photon energy
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#MOTORS = (ManipulatorPhi, ManipulatorTheta)
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#MOTORS = [ManipulatorPhi]
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MOTORS = [dummy]
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# comma-separated discrete list of scan positions
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#POSITIONS = [(PHI_RA
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#POSITIONS = [(PNGE[0], THETA_RANGE[0]), (PHI_RANGE[1], THETA_RANGE[1]), STEPS]
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#POSITIONS = [-175., 180., 5.]
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# seconds to wait between positioning command and triggering the detector
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LATENCY = 0.0
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# region setup
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#
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# for each region, define a python dictionary with the following items.
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# optional items can be left unspecified and will default to the indicated values.
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# for swept mode, include 'elo', 'ehi', 'estep', 'iter' values, but do not include 'efix'.
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# for fixed mode, include 'efix' value, but do not include 'elo', 'ehi', 'estep', 'iter'.
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#
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# 'name': user-specific name of the region (for graph title and RegionName attribute in data file)
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# 'elo': lower kinetic energy boundary of the spectrum
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# 'ehi': upper kinetic energy boundary of the spectrum
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# 'estep': energy step size
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# 'efix': center kinetic energy in fixed mode
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# 'epass': pass energy
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# 'tstep': dwell time in seconds
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# 'iter': number of iterations/sweeps (default 1)
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# 'cis': True = constant initial state (photoemission line), False = constant final state (Auger peak), (default False)
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# 'slit': exit slit (default current value)
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#REGION1 = {'name': 'VB62eV', 'ephot': 62, 'efix': 1222.1, 'epass': 200., 'tstep': 20., 'iter': 1, 'cis': False}
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#REGION2 = {'name': 'off-resonance', 'ephot': 1235.0, 'efix': 1219.4, 'epass': 200., 'tstep': 20., 'iter': 1, 'cis': False}
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#REGION1 = {'name': 'VB62eV', 'ephot': 62, 'elo': 49.0, 'ehi': 58.0, 'estep': 0.002, 'epass': 10, 'tstep': 0.5, 'iter': 1, 'cis': False}
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#REGION1 = {'name': 'VB62eVzoom', 'elo': 54.0, 'ehi': 58.0, 'estep': 0.002, 'epass': 10.0, 'tstep': 0.5, 'iter': 1, 'cis': True}
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# close beam shutter and turn off analyser at the end of the scan
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CLOSE_SHUTTER_AT_END = False
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# --- DO NOT EDIT BELOW THIS LINE! ---
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set_exec_pars(keep=False)
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def check_region(region):
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"""
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check region dictionary items and apply defaults where necessary
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"""
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region['fixed'] = 'efix' in region
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if region['fixed']:
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region['elo'] = region['efix']
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region['ehi'] = region['efix']
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if 'iter' not in region:
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region['iter'] = 1
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print("region {0}: setting default iter = {1}".format(region['name'], region['iter']))
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if 'cis' not in region:
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region['cis'] = False
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print("region {0}: setting default cis = {1}".format(region['name'], region['cis']))
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if 'slit' not in region:
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region['slit'] = ExitSlit.read()
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print("region {0}: setting default slit = {1}".format(region['name'], region['slit']))
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class SpectrumReader(ReadonlyRegisterBase, ReadonlyRegisterArray):
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def initialize(self):
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#super(SpectrumReader, self).initialize()
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self.scan_index = -1
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def create_datasets(self):
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path = get_exec_pars().scanPath + self.region_name + "/"
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self.channel_begin_dataset_name = path + "ScientaChannelBegin"
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self.channel_end_dataset_name = path + "ScientaChannelEnd"
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self.channel_center_dataset_name = path + "ScientaChannelCenter"
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self.pass_energy_dataset_name = path + "ScientaPassEnergy"
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self.step_energy_dataset_name = path + "ScientaStepEnergy"
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self.step_time_dataset_name = path + "ScientaStepTime"
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self.iterations_dataset_name = path + "ScientaIterations"
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self.slit_dataset_name = path + "ExitSlit"
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create_dataset(self.channel_begin_dataset_name, 'd')
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create_dataset(self.channel_end_dataset_name, 'd')
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create_dataset(self.channel_center_dataset_name, 'd')
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create_dataset(self.pass_energy_dataset_name, 'd')
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create_dataset(self.step_energy_dataset_name, 'd')
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create_dataset(self.step_time_dataset_name, 'd')
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create_dataset(self.iterations_dataset_name, 'd')
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create_dataset(self.slit_dataset_name, 'd')
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def setup(self):
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if self.scan_index != get_exec_pars().index:
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self.scan_index = get_exec_pars().index
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self.create_datasets()
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if self.region_index == 0:
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print "scan {0}".format(self.scan_index)
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#ephot = Eph.read()
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#try:
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# if self.region['cis']:
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# edelta = ephot - self.ephot_start
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# else:
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# edelta = 0.0
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#except AttributeError:
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# self.ephot_start = ephot
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edelta = 0.0
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elo = self.region['elo'] + edelta
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ehi = self.region['ehi'] + edelta
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try:
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Eph.write(self.region['ephot'])
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except KeyError:
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pass
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if self.region['fixed']:
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Scienta.setAcquisitionMode(ch.psi.pshell.epics.Scienta.AcquisitionMode.Fixed)
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Scienta.centerEnergy.write(elo)
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else:
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Scienta.setAcquisitionMode(ch.psi.pshell.epics.Scienta.AcquisitionMode.Swept)
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Scienta.lowEnergy.write(elo)
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Scienta.highEnergy.write(ehi)
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Scienta.stepSize.write(self.region['estep'])
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Scienta.setPassEnergy(int(self.region['epass']))
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Scienta.stepTime.write(self.region['tstep'])
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Scienta.setIterations(self.region['iter'])
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ExitSlit.write(self.region['slit'])
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Scienta.update()
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if self.region['fixed']:
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append_dataset(self.channel_center_dataset_name, elo)
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else:
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append_dataset(self.channel_begin_dataset_name, elo)
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append_dataset(self.channel_end_dataset_name, ehi)
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append_dataset(self.step_energy_dataset_name, self.region['estep'])
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append_dataset(self.pass_energy_dataset_name, self.region['epass'])
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append_dataset(self.step_time_dataset_name, self.region['tstep'])
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append_dataset(self.iterations_dataset_name, self.region['iter'])
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append_dataset(self.slit_dataset_name, self.region['slit'])
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def read(self):
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global current_region_index
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current_region_index = self.region_index
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self.setup()
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print("Acquiring region {0}.".format(self.region['name']))
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trig_scienta()
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time.sleep(0.5)
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sp = Scienta.getSpectrum().read()
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return sp
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def getSize(self):
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if self.region['fixed']:
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nx = 992
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else:
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nx = int((self.region['ehi'] - self.region['elo']) / self.region['estep']) + 1
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return nx
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class ImageReader(ReadonlyRegisterBase, ReadonlyRegisterMatrix):
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def read(self):
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return Scienta.getDataMatrix().read()
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def getWidth(self):
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if self.region['fixed']:
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nx = 992
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else:
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nx = int((self.region['ehi'] - self.region['elo']) / self.region['estep']) + 1
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return nx
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def getHeight(self):
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ny = Scienta.slices.read()
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return ny
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def setup_live_plots(regions):
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global live_plots
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global current_region_index
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names = [region['name'] for region in regions]
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live_plots = plot(None, names, title="Live Spectra")
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current_region_index = 0
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def update_live_plots():
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global live_plots
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global current_region_index
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try:
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while get_context().state.running:
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y = Scienta.spectrum.take(100)
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x = Scienta.spectrumX
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try:
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series = live_plots[current_region_index].getSeries(0)
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series.setData(x, y)
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except IndexError:
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pass
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time.sleep(1.0)
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finally:
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print "Stopping live spectra"
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def do_scan(motors, positions, regions, latency):
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global SENSORS
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SENSORS = []
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for (index, region) in enumerate(regions):
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check_region(region)
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reader = SpectrumReader()
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reader.region_index = index
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reader.region_name = "region{0}".format(index + 1)
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reader.region = region
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reader.initialize()
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set_device_alias(reader, reader.region_name + "/ScientaSpectrum")
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SENSORS.append(reader)
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image = ImageReader()
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image.region_index = index
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image.region = region
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image.initialize()
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set_device_alias(image, reader.region_name + "/ScientaImage")
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SENSORS.append(image)
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SENSORS.append(SampleCurrent)
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SENSORS.append(RefCurrent)
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adjust_sensors()
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set_adc_averaging()
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#ascan(motors, SENSORS, positions[0], positions[1], positions[2], latency, False, zigzag = True, before_read=wait_beam, after_read = after_readout)
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#lscan(motors, SENSORS, positions[0], positions[1], positions[2], latency, False, before_read=wait_beam, after_read = after_readout)
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vscan(motors, SENSORS, positions, True, latency,False, before_read=wait_beam, after_read = after_readout)
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for (index, region) in enumerate(regions):
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set_attribute(get_exec_pars().scanPath + "region{0}/ScientaSpectrum".format(index + 1), "RegionName", region['name'])
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set_attribute(get_exec_pars().scanPath + "region{0}/ScientaImage".format(index + 1), "RegionName", region['name'])
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set_attribute(get_exec_pars().scanPath, "Regions", [region['name'] for region in regions])
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class PhysicalLocation():
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def __init__(self, X, Y, Z, theta, tilt, phi):
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self.X = X
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self.Y = Y
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self.Z = Z
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self.theta = theta
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self.tilt = tilt
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self.phi = phi
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def move_to_location(self):
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ManipulatorX.move(self.X)
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ManipulatorY.move(self.Y)
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ManipulatorZ.move(self.Z)
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ManipulatorTheta.move(self.theta)
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ManipulatorTilt.move(self.tilt)
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ManipulatorPhi.move(self.phi)
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#VARS
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sample = PhysicalLocation(-4.1,-0.5,115.1,-8.8,0.7,-90.0)
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goldReference = PhysicalLocation(-3.4,4.4,111.6,-8.8,0.7,90.0)
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dosing = PhysicalLocation(-4.1,-0.5,115.1,51.0,0.7,-90.0)
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sample.move_to_location()
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energies = [300,400,500]
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for e in energies:
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try:
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Eph.move(e)
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goldReference.move_to_location()
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goldRegions = goldRegion(e, "fixed")
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do_scan(MOTORS, POSITIONS, goldRegions, LATENCY)
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sample.move_to_location()
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sampleRegions =
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do_scan(MOTORS, POSITIONS, sampleRegions, LATENCY)
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def goldRegion(energy, scan_type):
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if scan_type == "fixed":
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return [{'name': 'Au', 'ephot': 1237.7, 'efix': 1222.1, 'epass': 50., 'tstep': 5., 'iter': 1, 'cis': False}]
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elif scan_type == "swept":
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return [{'name': 'Au', 'elo': 54.0, 'ehi': 58.0, 'estep': 0.002, 'epass': 10.0, 'tstep': 0.5, 'iter': 1, 'cis': False}]
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def sampleRegion(energy, scan_type):
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epass = 10.0
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tstep = 0.5
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estep = 0.002
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if scan_type == "In4d":
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e1 = energy - 4.5 - 18
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e2 = energy - 4.5 - 17
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return [{'name': scan_type, 'elo': 54.0, 'ehi': 58.0, 'estep': estep, 'epass': epass, 'tstep': tstep, 'iter': 1, 'cis': False}]
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elif scan_type == "Sb4d":
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e1 = energy - 4.5 - 33
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e2 = energy - 4.5 - 32
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elif scan_type == "In3d":
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e1 = energy - 4.5 - 451
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e2 = energy - 4.5 - 444
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return [{'name': scan_type, 'elo': 54.0, 'ehi': 58.0, 'estep': estep, 'epass': epass, 'tstep': tstep, 'iter': 1, 'cis': False}]
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goldReference.move_to_location()
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thisregion =
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sample.move_to_location()
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thisregion = {'name': 'In3d', 'ephot': 1237.7, 'efix': 1222.1, 'epass': 50., 'tstep': 5., 'iter': 1, 'cis': False} |