def __init__(self, params, filename):
gpib_ch1 = int(params["Ch1 SR830 GPIB"])
lockin1 = stanford.SR830(gpib_ch1)
gpib_ch2 = int(params["Ch2 SR830 GPIB"])
lockin2 = stanford.SR830(gpib_ch2)
magnet = oxford.IPS120_10(GPIB_IPS120)
# Define the temperature controllers
self.cryocon = Cryocon32B(GPIB_CRYOCON32B)
self.lakeshore = Lakeshore332(GPIB_LAKESHORE332)
# Save parameters
self.measurement_interval = float(params["sampling interval / s"])
self.lockin1 = lockin1
self.R_series1 = float(params["Ch1 R_series / Ohm"])
self.lockin2 = lockin2
self.R_series2 = float(params["Ch2 R_series / Ohm"])
self.magnet = magnet
self.vgate = hp.HP3478(GPIB_HPDMM)
# Initialise variables
self.current_values = VAR_INIT.copy()
self.var_titles = VAR_TITLES.copy()
# create a csv logger
self.logger = csvlogger.Logger(filename, self.var_order, self.var_titles, self.format_strings)
def __init__(self, params, filename):
gpib_ch1 = int(params["Ch1 SR830 GPIB"])
lockin1 = stanford.SR830(gpib_ch1)
gpib_ch2 = int(params["Ch2 SR830 GPIB"])
lockin2 = stanford.SR830(gpib_ch2)
magnet = oxford.IPS120_10(GPIB_IPS120)
p = params.copy()
p["R_series1 / Ohm"] = params["Ch1 R_series / Ohm"]
p["R_series2 / Ohm"] = params["Ch2 R_series / Ohm"]
super().__init__(p, filename, lockin1, lockin2, magnet)
def __init__(self, params, filename):
# Define the temperature controllers
self.cryocon = Cryocon32B(GPIB_CRYOCON32B)
self.lakeshore = Lakeshore332(GPIB_LAKESHORE332)
# Save parameters
self.measurement_interval = float(params["sampling interval / s"])
gpib_ch1 = int(params["Ch1 Keithley617 GPIB"])
self.keithley617 = keithley.Keithley617(gpib_ch1)
gpib_ch2 = int(params["Ch2 SR830 GPIB"])
self.lockin2 = stanford.SR830(gpib_ch2)
self.R_series2 = float(params["Ch2 R_series / Ohm"])
self.magnet = fake_magnets.ConstMagnet()
# Initialise variables
self.current_values = VAR_INIT.copy()
self.var_titles = VAR_TITLES.copy()
# create a csv logger
self.logger = csvlogger.Logger(filename, self.var_order, self.var_titles, self.format_strings)
def __init__(self, params, filename):
gpib_sr830 = int(params["SR830 GPIB"])
lockin1 = stanford.SR830(gpib_sr830)
sens = float(params["PAR124 sens / V"])
theta = float(params["PAR124 theta / degrees"])
f = float(params["PAR124 f / Hz"])
Vout = float(params["PAR124 Vout / V"])
transformer = (int(params["PAR124 transformer mode"]) != 0)
gpib_dmm = int(params["PAR124 DMM GPIB"])
dmm = keithley.Keithley196(gpib_dmm)
lockin2 = par.PAR124A(dmm,
sens=sens,
theta=theta,
f=f,
Vout=Vout,
transformer=transformer)
magnet = fake_magnets.ConstMagnet()
p = params.copy()
p["R_series1 / Ohm"] = params["SR830 R_series / Ohm"]
p["R_series2 / Ohm"] = params["PAR124 R_series / Ohm"]
super().__init__(p, filename, lockin1, lockin2, magnet)
def __init__(self, params, filename):
# Save parameters
gpib = int(params["RTD SR830 GPIB"])
rtd_lockin = stanford.SR830(gpib)
rtd_Rs = float(params["RTD R_series / Ohm"])
thermometer = RTD(rtd_lockin, rtd_Rs)
magnet = fake_magnets.ConstMagnet()
p = params.copy()
super().__init__(p, filename, thermometer, magnet)
def __init__(self, params, filename, thermometer, magnet):
# Save parameters
self.thermometer = thermometer
self.magnet = magnet
gpib = int(params["MI SR830 GPIB"])
self.mi_lockin = stanford.SR830(gpib)
self.measurement_interval = float(params["sampling interval / s"])
self.Rs_mi = float(params["MI R_series / Ohm"])
# Initialise variables
self.current_values = VAR_INIT.copy()
self.var_titles = VAR_TITLES.copy()
# create a csv logger
self.logger = csvlogger.Logger(filename, self.var_order,
self.var_titles, self.format_strings)
title = "Mutual Inductance: Measuring against T"
# The main procedure
if __name__ == '__main__':
print("starting.......")
timestring = time.strftime("%Y%m%d_%H.%M.%S")
logfilename = os.path.join(save_path,
"{0}_{1}.csv".format(timestring, filename))
notesfilename = os.path.join(
save_path, "{0}_{1}_notes.txt".format(timestring, filename))
dmm = keithley.Keithley2000(15)
thermometer = lakeshore.SiDiode(dmm, THERMOMETER_CALI)
lockin = stanford.SR830(30)
magnet = fake_magnets.ConstMagnet()
experiment = MI_Tscan(thermometer, magnet, lockin, logfilename)
with open(notesfilename, "w") as notesfile:
notesfile.write("experiment: \"{}\"\n".format(experiment.title))
notesfile.write("Local time (YYYY/MM/DD, HH:MM:SS): {}\n".format(
time.strftime("%Y/%m/%d, %H:%M:%S")))
notesfile.write(NOTES)
notesfile.write(
"thermometer calibration file: \"{}\".\n".format(THERMOMETER_CALI))
gali = galileo.Galileo(experiment,
SAMPLING_INTERVAL,