97 lines
3.6 KiB
Python
97 lines
3.6 KiB
Python
import ch.psi.pshell.epics.ControlledVariable as ControlledVariable
|
|
|
|
if get_exec_pars().source == CommandSource.ui:
|
|
prefix = "SINSB04-RSYS"
|
|
else:
|
|
prefix = args[0] + "-RSYS"
|
|
|
|
start = caget(prefix + ":SET-SCAN-START")
|
|
stop = caget(prefix + ":SET-SCAN-STOP")
|
|
step = caget(prefix + ":SET-SCAN-STEP")
|
|
lat = caget(prefix + ":SET-SCAN-WAIT-TIME")
|
|
nb = caget(prefix + ":SET-NUM-AVERAGE")
|
|
bpm_ch = caget(prefix + ":DBPM")
|
|
disp = caget(bpm_ch + ":DISPERSION")
|
|
energy0 = caget(bpm_ch + ":ENERGY")
|
|
|
|
phase = ControlledVariable("Phase", prefix + ":SET-VSUM-PHASE-SIM", prefix + ":GET-VSUM-PHASE-SIM")
|
|
phase.config.minValue =-45.0
|
|
phase.config.maxValue = 360.0
|
|
phase.config.resolution = 0.5
|
|
phase.initialize()
|
|
|
|
V = Channel(prefix + ":GET-VSUM-AMPLT-SIM", type = 'd', alias='Amplitude Readback')
|
|
P = Channel(prefix + ":GET-KLY-POWER-SIM", type = 'd', alias='Power Readback')
|
|
|
|
x = Channel(bpm_ch + ":X1-SIMU", type = 'd', alias='BPM-X')
|
|
|
|
caput(prefix + ":GET-FIT-PHASE-ARRAY", to_array([0.0],'d'))
|
|
caput(prefix + ":GET-FIT-ENERGY-ARRAY", to_array([0.0],'d'))
|
|
caput(prefix + ":GET-ONCREST-VSUM-PHASE", float('nan'))
|
|
caput(prefix + ":GET-ONCREST-VSUM-AMPLT", float('nan'))
|
|
caput(prefix + ":GET-ONCREST-E-GAIN", float('nan'))
|
|
caput(prefix + ":GET-ONCREST-KLY-POWER", float('nan'))
|
|
caput(prefix + ":CALC-VSUM-PHASE-OFFSET", float('nan'))
|
|
caput(prefix + ":CALC-VSUM-AMPLT-SCALE" , float('nan'))
|
|
caput(prefix + ":CALC-VOLT-POWER-SCALE" , float('nan'))
|
|
|
|
#update the plot dynamically
|
|
arr_phase,arr_energy = [],[]
|
|
def after(rec):
|
|
global arrpos, arrval, disp, energy0
|
|
arr_phase.append(rec.positions[0])
|
|
arr_energy.append(rec.values[1]/1000.0/disp*energy0)
|
|
caput(prefix + ":GET-ENERGY-ARRAY", to_array(arr_energy,'d'))
|
|
caput(prefix + ":GET-PHASE-ARRAY", to_array(arr_phase,'d'))
|
|
|
|
try:
|
|
Vb = create_averager(V, nb, lat)
|
|
xb = create_averager(x, nb, lat)
|
|
|
|
r = lscan(phase, [V, x], start, stop, step , latency=lat, after_read = after)
|
|
rf_phase = r.getPositions(0)
|
|
energy = [x/1000.0/disp*energy0 for x in r.getReadable(1)]
|
|
caput(prefix + ":GET-ENERGY-ARRAY", to_array(energy,'d'))
|
|
caput(prefix + ":GET-PHASE-ARRAY", to_array(rf_phase,'d'))
|
|
phase_fit_max = None
|
|
try:
|
|
(energy_max, angular_frequency, phase0, in_range, phase_fit_max, fit_x, fit_y) = hfit(energy , xdata = rf_phase)
|
|
except:
|
|
raise Exception("Fit failure")
|
|
caput(prefix + ":GET-ONCREST-VSUM-PHASE", phase_fit_max)
|
|
caput(prefix + ":GET-ONCREST-E-GAIN", energy_max)
|
|
caput(prefix + ":GET-FIT-PHASE-ARRAY", fit_x)
|
|
caput(prefix + ":GET-FIT-ENERGY-ARRAY", fit_y)
|
|
phase_min, phase_max = min(rf_phase), max(rf_phase)
|
|
if not (phase_min <= phase_fit_max <= phase_max):
|
|
raise Exception("Fit maximum outside scan range")
|
|
phase.write(phase_fit_max)
|
|
time.sleep(lat)
|
|
V = V.read()
|
|
P = P.read()
|
|
caput(prefix + ":GET-ONCREST-VSUM-AMPLT", V)
|
|
caput(prefix + ":GET-ONCREST-KLY-POWER", P)
|
|
finally:
|
|
phase.close()
|
|
V.close()
|
|
P.close()
|
|
x.close()
|
|
|
|
print ("------------------------------------")
|
|
print ("Valid fit")
|
|
|
|
energy_gain = energy_max
|
|
phase_offset = 90 - phase_fit_max
|
|
amplitude_scale = energy_gain / V
|
|
power_scale = P / math.pow(V,2)
|
|
|
|
caput(prefix + ":CALC-VSUM-PHASE-OFFSET", phase_offset)
|
|
caput(prefix + ":CALC-VSUM-AMPLT-SCALE" , amplitude_scale)
|
|
caput(prefix + ":CALC-VOLT-POWER-SCALE" , power_scale)
|
|
|
|
set_return("\nEnergy Gain: " + str(energy_gain) + "\n" +
|
|
"Phase Offset: " + str(phase_offset) + "\n" +
|
|
"Amplitude Scale: " + str(amplitude_scale) + "\n" +
|
|
"Power Scale: " + str(power_scale))
|
|
|