57 lines
1.8 KiB
Python
57 lines
1.8 KiB
Python
import ch.psi.pshell.epics.ControlledVariable as ControlledVariable
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import ch.psi.pshell.epics.Camtool as Camtool
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if get_exec_pars().source == CommandSource.ui:
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start = -180.0
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stop = 180.0
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step = 20.0
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nb = 5
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lat = 1.0
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disp = caget("SINBD01-DSCR010:DISPERSION-SIM")
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energy0 = caget("SINBD01-DSCR010:ENERGY-SIM")
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else:
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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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disp = args[5]
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energy0 = args[6]
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phase = ControlledVariable("Phase", "SINEG01-RSYS:SET-VSUM-PHASE", "SINEG01-RSYS:SET-VSUM-PHASE")
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phase.config.minValue =-180.0
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phase.config.maxValue = 180.0
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phase.config.resolution = 0.25
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phase.initialize()
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check_camtool()
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camtool.start("SINBD01-DSCR010")
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while camtool.stream.getChild("gr_x_fit_mean") == None:
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time.sleep(0.1)
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x = camtool.stream.getChild("gr_x_fit_mean")
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dx = camtool.stream.getChild("gr_x_fit_standard_deviation")
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try:
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xb = create_averager(x, nb, -1) # -1 event based, waits for the next value
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dxb = create_averager(dx, nb, -1)
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dxb.monitored=True # not blocking, will return last nb values
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r = lscan(phase, [xb, dxb], start, stop, step , latency=lat)
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rf_phase = r.getPositions(0)
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E = [energy0 * (1 + val.mean / 1e6 / disp) for val in r.getReadable(0)]
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dE = [energy0 * (val.mean / 1e6 / disp) for val in r.getReadable(1)]
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finally:
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phase.close()
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camtool.stop() # stops camtool but does not close it camtool is a global object
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p = plot(None, title="Output")[0]
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p.clear()
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p.addSeries(LinePlotSeries("Energy"))
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p.addSeries(LinePlotSeries("Energy spread"))
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p.getSeries(0).setData(to_array(rf_phase, 'd'), E)
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p.getSeries(1).setData(to_array(rf_phase, 'd'), dE)
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p.setLegendVisible(True)
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set_return([E,dE]) |