127 lines
4.6 KiB
Python
127 lines
4.6 KiB
Python
import ch.psi.pshell.epics.Positioner as Positioner
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import ch.psi.pshell.epics.ChannelDouble as ChannelDouble
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dry_run = False
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do_elog = True
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is_panel = get_exec_pars().source != CommandSource.ui #must be check before run
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if is_panel:
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start = args[0]
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stop = args[1]
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step = args[2]
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nb = int(args[3])
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lat = args[4]
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plt = args[5]
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else:
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start = -50.0
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stop = 150.0
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step = 1.0
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nb = 2
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lat = 0.010
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plt = plot(None, title="Output")[0]
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#Plot setup
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plt.clear()
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plt.removeMarker(None)
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plt.setStyle(plt.Style.ErrorY)
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plt.addSeries(LinePlotErrorSeries("Charge", Color.red))
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plt.getAxis(plt.AxisId.X).setLabel("Gun Beam Phase (deg)")
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plt.getAxis(plt.AxisId.Y).setLabel("SINEG01-DICT215:B1_CHARGE (pC)")
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plt.setLegendVisible(True)
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if dry_run:
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bph = Positioner("Beam phase", "SINEG01-RSYS:SET-BEAM-PHASE-SIM", "SINEG01-RSYS:SET-BEAM-PHASE-SIM")
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rph = ChannelDouble("RF phase", "SINEG01-RSYS:SET-VSUM-PHASE-SIM")
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q = ChannelDouble("Charge", "SINEG01-DICT215:B1_CHARGE-SIM")
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q.initialize()
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q.monitored=True
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else:
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bph = Positioner("Beam phase", "SINEG01-RSYS:SET-BEAM-PHASE", "SINEG01-RSYS:GET-BEAM-PHASE")
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rph = ChannelDouble("RF phase", "SINEG01-RSYS:SET-VSUM-PHASE")
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#st = Stream("ICTstream", dispatcher)
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#q = st.addScalar("Charge", "SINEG01-DICT215:B1_CHARGE", 1, 0)
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#st.initialize()
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#st.start()
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#st.waitValueChange(10000)
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q = ChannelDouble("Charge", "SINEG01-DICT215:B1_CHARGE")
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q.initialize()
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q.monitored=True
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bph.config.minValue = -360.0
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bph.config.maxValue = 360.0
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bph.config.precision = 3
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bph.config.rotation = False
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bph.config.resolution = 0.01
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bph.config.save()
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bph.initialize()
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rph.initialize()
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rph.monitored=True
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bph0 = bph.read()
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rph0 = rph.read()
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#Creating averagers
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rph_averager = create_averager(rph, nb, 0.1)
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q_averager = create_averager(q, nb, 0.1)
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q_averager.monitored=True
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#Record callback: uptate of output plot
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def after_sample(record, scan):
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plt.getSeries(0).appendData(record.positions[0], record.values[1].mean, record.values[1].stdev)
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#The scan loop
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try:
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r = lscan(bph, (rph_averager, q_averager), start, stop, step, latency=lat, after_read = after_sample)
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finally:
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rph.write(rph0)
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bph.close()
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rph.close()
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q.close()
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#st.close()
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beamphase = r.getPositions(0)
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rfphase = [val.mean for val in r.getReadable(0)]
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rfphaserms = [val.stdev for val in r.getReadable(0)]
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charge = [val.mean for val in r.getReadable(1)]
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chargerms = [val.stdev for val in r.getReadable(1)]
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#Fitting and plotting
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i, a, b = 0, 0, 0
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while charge[i] < (max(charge) * 0.20) : a = i; i = i + 1
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while charge[i] < (max(charge) * 0.80) : b = i; i = i + 1
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x = beamphase[a:b+1]
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y = charge[a:b+1]
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p = (a0, a1) = fit_polynomial(y, x, 1)
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f = PolynomialFunction(p)
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x1 = -a0 / a1 if a1 != 0 else 0.0
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x2 = beamphase[charge.index(max(charge))]
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x_fit = frange(x1, x2, (x2-x1), True)
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y_fit = [f.value(val) for val in x_fit]
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plt.addSeries(LinePlotErrorSeries("Fit", Color.green))
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plt.getSeries(1).setData(to_array(x_fit, 'd'), y_fit, [0.0] * len(x_fit))
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plt.getSeries(1).setPointsVisible(False)
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#Setting the return value
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bph_ref_guess = x1
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set_return([bph_ref_guess])
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#Elog entry
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if do_elog:
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if get_option("Generated data file:\n" + get_exec_pars().path +"\n\n" + "Save to ELOG?", "YesNo") == "Yes":
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Laser = str(caget("SLGTV-LMTO-M055:MOT-KNOWN-POS"))
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log_msg = "Data file: " + get_exec_pars().path + "\n\n"
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log_msg = log_msg + "Laser: " + Laser + "\n"
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if Laser == "Alcor":
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log_msg = log_msg + "Energy plate: %0.2f" % caget("SLGTH01-LMRM-M074:MOT.RBV") + " deg \n"
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else:
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log_msg = log_msg + "Energy plate: %0.2f" % caget("SLGJG-LMRM-M031:MOT.RBV") + " deg \n"
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if caget("SLGTV-LMTO-M053:MOT-ACT-POS") == "IRIS":
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log_msg = log_msg + "Collimator: IRIS %0.2f" % caget("SLGTV-LAPP:SIZE-GET") + " mm \n"
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else:
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log_msg = log_msg + "Collimator: " + str(caget("SLGTV-LMTO-M053:MOT-ACT-POS")) + "\n"
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log_msg = log_msg + "Charge: %0.2f" % caget("SINEG01-DICT215:B1_CHARGE-OP") + " pC at %0.2f" % bph0 + " deg beam phase\n"
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log_msg = log_msg + "Ref. phase: %0.2f" % x1 + " deg \n"
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attachments = []
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if plt is not None:
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sleep(0.1) #Give some time to plot to be finished - it is not sync with acquisition
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file_name = os.path.abspath(get_context().setup.getContextPath() + "/SchottkyScanPlot.png")
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plt.saveSnapshot(file_name , "png")
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attachments = [file_name]
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elog("Schottky scan", log_msg, attachments)
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