#Parameters ''' FIELD = "Hx" RANGES = [(-0.2, -0.1, 1.5),(-0.1, 0.0, 1.0),(0.0, 0.1, 1.0),(0.1, 0.2, 1.5)] ENERGIES = (707.90, 703.90) ENERGY_CHANGE_SLEEP = 0.5 MODE = 'CIRC +' OFFSET = -1.0 ''' """ FIELD = field_x RANGES =[(B1, B2, rr1),(B2,-B2,rr2),(-B2,-B1,rr1)] ENERGIES = [E1,E2] ENERGY_CHANGE_SLEEP = 0.5 MODE =None OFFSET=None """ FIELD_PRECISION = 0.01 if FIELD == field_z: FIELD = "Hz" field = field_z if FIELD == "Hz" else field_x field_done = field_z_done if FIELD == "Hz" else field_x_done ramp_rate = ramp_rate_z if FIELD == "Hz" else ramp_rate_x #Pre-actions if NO_BEAM_CHECK == False: wait_beam() if MODE is not None: pol_mode.write(MODE) if OFFSET is not None: pol_offset.write(OFFSET) #caput('X07MA-ID:ENERGY-OFFS', OFFSET) #caputq('X07MA-PC:CSCALER.INPB', '1') if len(ENERGIES) ==2: dif_series = plot([],"Dif", title="Dif")[0].getSeries(0) else: dif_series = None set_preference(Preference.ENABLED_PLOTS, ['field', 'tey_norm', 'trans_norm']) set_preference(Preference.PLOT_TYPES, {'tey_norm':1, 'trans_norm':1}) field_var = 'fieldAnalogZ' if (FIELD == "Hz") else 'fieldAnalogX' scan = ManualScan(['field', 'Energy'], ['TEY', 'I0', 'trans', 'polarization', 'polAngle', 'temperature', 'RingCurrent', field_var, 'tey_norm','trans_norm'], [0.0, ENERGIES[0]], [0.0, ENERGIES[-1]], [0, len(ENERGIES)-1]) scan.start() write_logs() for (START_FIELD, END_FIELD, RAMP_RATE) in RANGES: #ramp_rate.write(RAMP_RATE) if abs(field.readback.read() - START_FIELD) > FIELD_PRECISION: ramp_rate.write(2.0) field.write(START_FIELD) #if iPS == True: #caput("X07MA-PC-MAG:X:DMD",float(START_FIELD)) if field_done is None: #ramp_rate.write(2.0) ramp_rate.waitInPosition(2.0,10000) time.sleep(1.0) caput("X07MA-ES1-IPS:ACTION", 1) time.sleep(3.0) wait_device_in_range(field, START_FIELD, FIELD_PRECISION) print "Waiting field done..." while caget("X07MA-ES1-IPS:OUTPUT_RBV", "i") != 0 : time.sleep(0.1) print "Done waiting" else: # OLD AND PRONE TO HANG #time.sleep(3.0) #wait_device(field_done, 1) #ramp_done.wait_for_value(1.0) # NEW, copied from hystscan_esr, april 2021 time.sleep(3.0) # wait_device(field_done, 1) #ramp_done.wait_for_value(1.0) ### this waiting procedure was introduced because sometimes the field does not move and the whole script gets stuck then. difference = field.readback.read() - START_FIELD difference0 = difference # difference0 is the field offset before entering the stabilization loop last_difference = difference # last_difference is updated during the stabilization loop while abs(difference) > FIELD_PRECISION: time.sleep(5.0) difference = field.readback.read() - START_FIELD # resend a start ramp in case nothing is happening, ie when it is stuck in this waitfield if abs(difference-difference0) < FIELD_PRECISION: caput('X07MA-PC-MAG:STARTRAMP.PROC',1) print('Field setting stuck: re-starting ramp') # also resend a start ramp in case nothing is happening wrt to the last 5 seconds elif abs(difference-last_difference) < FIELD_PRECISION: caput('X07MA-PC-MAG:STARTRAMP.PROC',1) print('Field setting stuck: re-starting ramp') last_difference = difference #open_valve(2.0) if RAMP_RATE is not None: ramp_rate.write(RAMP_RATE) ramp_rate.waitInPosition(RAMP_RATE,10000) print "Set end field: ", END_FIELD field.write(END_FIELD) #caputq('X07MA-PC-PS2:M:GO.A', END_FIELD) index = 0 while(True): for setpoint2 in ENERGIES: #Energy.put(setpoint2, timeout=None) # TODO: Set appropriate timeout energy.write(setpoint2) sleep( ENERGY_CHANGE_SLEEP ) # Settling time #TODO: change to Controlled variable? readback2 = energy_readback.read() #EnergyReadback.get() #if abs(readback2 - setpoint2) > 0.5 : # TODO: Check accuracy # raise Exception('Energy could not be set to the value ' + str(setpoint2)) #while abs(readback2 - setpoint2) > 0.1 : # TODO: Check accuracy #print "Energy could not be set to the value ", setpoint2, "Readback:", readback2 #time.sleep(2.0) #energy.write(setpoint2) #sleep( ENERGY_CHANGE_SLEEP ) # Settling time #readback2 = energy_readback.read() #readback2 = energy_readback.read() #EnergyReadback.get() if abs(readback2 - setpoint2) > 0.1 : # TODO: Check accuracy #raise Exception('Energy could not be set to the value ' + str(setpoint2)) #print 'Energy could not be set to the value, try again. ' + str(setpoint2) energy.write(setpoint2) sleep( ENERGY_CHANGE_SLEEP ) # Settling time #Detector field readback field_readback = field.readback.read() #fieldReadback.get() detector1 = signal_tey.read() #TEY.get() detector2 = signal_i0.read() #I0.get() detector3 = signal_trans.read() #trans.get() detector4 = float(pol_mode.getPositions().index(pol_mode.readback.read())) #polarization.get() detector5 = pol_angle.read() #polAngle.get() detector6 = temperature.readback.read() #temperature.get() detector7 = current.read() detector8 = signal_field_analog_x.read() # fieldAnalogX.get() tey_norm = detector1/detector2 trans_norm = detector3/detector2 if dif_series is not None: if setpoint2 == ENERGIES[0]: first = tey_norm else: dif = tey_norm-first dif_series.appendData(field_readback,dif) scan.append ([field_readback, setpoint2], [field_readback, readback2], [detector1, detector2, detector3, detector4, detector5, detector6, detector7, detector8, tey_norm, trans_norm]) if field_done.read() == 1: #If not ramping #ramp_done.get() == 1: print "Reached end field. Readback=", field_readback break index = index+1 scan.end() log_scan_filename() if RAMP_RATE is not None: if FIELD == "Hz": print "Reset ramp rate-z" ramp_rate.write(0.35) ramp_rate.waitInPosition(0.35,10000) else: print "Reset ramp rate-x" ramp_rate.write(2.0) ramp_rate.waitInPosition(2.0,10000)