def plot_yag_lifetime():
time, voltage = _load_oscilloscope_csv("data/ALL0010/F0010CH2.CSV")
time *= 1E6 # us
voltage *= 1000 # mV
error_voltage = voltage[time < 0].std()
print("Fehler:", error_voltage, "mV")
fit = Fit(EXPONENTIAL_DECAY)
fit.set_data(xdata=time, ydata=voltage, yerrors=error_voltage)
fit.set_labels(xlabel="Zeit / us", ylabel="Spannung / mV")
fit = fit.filtered(np.logical_and(time > 0, time < 1500))
fit.set_params(A=0.1, offset=0.20, T=250)
fit.iterative_fit(1)
print("Lebensdauer:", formatUFloat(fit.uvalue("T"), "us"), "- Chi^2:",
fit.chi2, "- ndf:", fit.ndf, "- Chi^2/ndf:", fit.chi2ndf)
plt.clf()
fit.plot(box="tr", units={"T": "us", "A": "mV", "offset": "mV"})
plt.savefig("out/yag_lifetime." + SAVETYPE)
def plot_strontium():
m = {
0: 0,
5: 0.03,
6: 0.04,
7: 0.05,
8: 0.08,
9: 0.10,
10: 0.17,
11: 0.25,
12: 0.37,
13: 0.50,
14: 0.64,
15: 0.83,
16: 1.01,
17: 1.23,
18: 1.39,
19: 1.57,
20: 1.88,
21: 2.29,
22: 2.79,
23: 3.46,
}
nr, count = np.loadtxt("data/strontium_alu.txt", unpack=True)
absorb = np.zeros_like(nr)
for i, x in enumerate(nr):
absorb[i] = m[x] / 10
scale = 1 / count[0]
error_count = np.sqrt(count + 1)
error_absorb = 0.01 / 10
count *= scale
error_count *= scale
func = lambda x, A, mu, offset: A * np.exp(-x * mu) + offset
fit = Fit(func)
fit.set_data(xdata=absorb,
ydata=count,
xerrors=error_absorb,
yerrors=error_count)
fit.set_params(A=1, mu=1, offset=0)
fit.set_labels(xlabel="Dicke / cm", ylabel="Anteil")
fit.iterative_fit(5)
plt.clf()
plt.minorticks_on()
plt.xlim(0, .35)
fit.plot(box="tr", units={"mu": "1/cm"})
plt.savefig("out/strontium_fit." + SAVETYPE)
plt.clf()
plt.minorticks_on()
fit.plot_residual(box="tr")
plt.savefig("out/strontium_residual." + SAVETYPE)
rho = ufloat(2.7, 0.1)
mu = fit.uvalue("mu")
print("Absorptionskoeffizient:", mu, "1/cm")
mu1 = mu / rho
print("Massenabsorptionskoeffizient:", mu1, "cm^2/g")
E = umath.pow(17 / mu1, 1 / 1.14)
print("Maximalenergie:", E, "MeV")
R1 = 0.412 * umath.pow(E, 1.265 - 0.0954 * umath.log(E))
R = R1 / rho
print("Reichweite:", R1, "g/cm^2")
print("Reichweite:", R, "cm")
def calc_radium_range():
peak = {
35: (1100, 1800),
35.5: (1000, 1700),
36: (900, 1600),
36.5: (800, 1500),
37: (600, 1400),
37.5: (500, 1200),
38: (300, 1000),
38.5: (100, 700)
}
distances = []
error_distances = []
integrals = []
error_integrals = []
for distanceStr in ("35_0", "35_5", "36_0", "36_5", "37_0", "37_5", "38_0",
"38_5"):
filename = "data/Radium%s.TKA" % distanceStr
distance = ufloat(float(distanceStr.replace("_", ".")), 0.05)
tka = TkaFile(filename)
lower, upper = peak[distance.n]
data = tka.data[lower:upper]
distance = distance - 35 + ufloat(3.17, 0.17)
integral = ufloat(data.sum(), math.sqrt((data + 1).sum()))
integral_fixed = integral * distance**2
print(
"$({:L}) \\unit{{cm}}$ & {:d} & {:d} & ${:dL}$ & ${:dL} \\unit{{cm^2}}$ \\\\"
.format(distance, lower, upper, integral, integral_fixed))
distances.append(distance.n)
error_distances.append(distance.s)
integrals.append(integral_fixed.n)
error_integrals.append(integral_fixed.s)
distances = np.array(distances)
integrals = np.array(integrals)
error_distances = np.array(error_distances)
error_integrals = np.array(error_integrals)
plt.clf()
plt.minorticks_on()
plt.errorbar(distances,
integrals,
xerr=error_distances,
yerr=error_integrals,
fmt="s")
#plt.plot(distances, integrals, 's')
plt.xlabel("Distanz / cm")
plt.ylabel("korrigierte Summe / cm^2")
plt.ylim(0, plt.ylim()[1])
plt.savefig("out/radium_range." + SAVETYPE)
#plt.show()
plt.clf()
plt.minorticks_on()
scale = 1 / integrals[0:3].mean()
fit = Fit(LINEAR)
fit.set_params(offset=1, slope=-0.5)
fit.set_data(xdata=distances[1:],
ydata=integrals[1:] * scale,
xerrors=error_distances[1:],
yerrors=error_integrals[1:] * scale)
fit.set_labels(xlabel="Distanz / cm", ylabel="Intensität")
fit.iterative_fit(5)
fit.plot(plot_data=True, plot_fit=True, box="bl", units={"slope": "1/cm"})
plt.ylim(0, plt.ylim()[1])
plt.savefig("out/radium_range_fit." + SAVETYPE)
plt.clf()
plt.minorticks_on()
fit.plot_residual(box="tr")
plt.savefig("out/radium_range_residual." + SAVETYPE)
r = (0.5 - fit.uvalue("offset")) / fit.uvalue("slope")
print("Range:", r, "cm")
def plot_diode_kennlinie():
current, power = np.loadtxt("data/kennlinie_diode.txt", unpack=True)
error_current = 1 / math.sqrt(12)
error_power = 1 / math.sqrt(12)
plt.clf()
plt.errorbar(current,
power,
xerr=error_current,
yerr=error_power,
fmt=',',
color="black")
plt.xlabel("Strom / mA")
plt.ylabel("Leistung / mW")
plt.savefig("out/kennlinie_diode_raw." + SAVETYPE)
fit_indices_list = []
fit_indices_list.append(current > 200)
valid = current > 200
valid[current > 410] = False
fit_indices_list.append(valid)
valid = current > 410
fit_indices_list.append(valid)
zero_power = power[current < 150]
background = zero_power.mean()
print("Background:", background, "mW")
power -= background
func = lambda x, slope, threshold: (x - threshold) * slope
fit = Fit(func)
fit.set_params(slope=0.85, threshold=190)
fit.set_data(xdata=current,
ydata=power,
xerrors=error_current,
yerrors=error_power)
fit.set_labels(xlabel="Strom / mA", ylabel="Leistung / mW")
for i, fit_indices in enumerate(fit_indices_list):
subfit = fit.filtered(fit_indices)
plt.clf()
plt.errorbar(current,
power,
xerr=error_current,
yerr=error_power,
fmt=',',
color="black")
subfit.iterative_fit(5)
#plt.axhline(background, color="blue")
#plt.axvline(subfit.value("threshold"), color="blue")
print("Threshold:", formatUFloat(subfit.uvalue("threshold"),
unit="mA"))
print("Slope:", formatUFloat(subfit.uvalue("slope"), unit="W/A"))
print("Chi^2/ndf:", subfit.chi2ndf)
print("===")
subfit.plot(range=(subfit.value("threshold"), current.max()),
color="black",
plot_fit=False,
plot_data=True,
fmt="s")
subfit.plot(range=(subfit.value("threshold"), current.max()),
box="tl",
color="red",
plot_data=False,
units={
"threshold": "mA",
"slope": "W/A"
})
plt.savefig("out/kennlinie_diode_%d_fit." % i + SAVETYPE)
plt.clf()
subfit.plot_residual(box="br", color="black", fmt="s")
plt.savefig("out/kennlinie_diode_%d_residual." % i + SAVETYPE)
def plot_qswitch():
frequency, error_frequency, power = np.loadtxt("data/frequenz_qswitch.txt",
unpack=True)
error_power = 1 / math.sqrt(12)
power /= 1000
error_power /= 1000
plt.clf()
plt.errorbar(frequency,
power,
xerr=error_frequency,
yerr=error_power,
fmt=',',
color="black")
plt.xlabel("Frequenz / Hz")
plt.ylabel("Leistung / mW")
plt.savefig("out/qswitch_raw." + SAVETYPE)
#power -= power[0]
fit = Fit(POLY3)
fit.set_data(xdata=frequency,
ydata=power,
xerrors=error_frequency,
yerrors=error_power)
fit.set_params(a0=380, a1=0.005, a2=-7e-8)
fit.set_labels(xlabel="Frequenz / Hz", ylabel="Leistung / mW")
subfit = fit.filtered(np.logical_and(frequency < 20e3, frequency > 1e3))
subfit.iterative_fit(5)
plt.clf()
subfit.plot(box="br",
units={
"a3": "mW/Hz^3",
"a2": "mW/Hz^2",
"a1": "mW/Hz",
"a0": "mW"
})
plt.savefig("out/qswitch_power_fit." + SAVETYPE)
plt.clf()
subfit.plot_residual(box="tr")
plt.savefig("out/qswitch_power_residual." + SAVETYPE)
plt.clf()
time, voltage = _load_oscilloscope_csv("data/ALL0023/F0023CH2.CSV")
time *= 1E6
time -= -935
plt.plot(time, voltage, ".", color="black")
pause = np.logical_and(time > 300, time < 900)
one_period = np.logical_and(time > 0, time < 1000)
print(one_period, one_period.sum())
mean_voltage = ufloat(voltage[one_period].mean(),
voltage[pause].std() / math.sqrt(one_period.sum()))
peak_voltage = ufloat(voltage[one_period].max(), voltage[pause].std())
print("ErrorL:", voltage[pause].std())
print("Mean voltage:", mean_voltage, "V")
print("Peak voltage:", peak_voltage, "V")
frequency = 1.01798e3 # Hz
mean_power = subfit.ueval(frequency)
print("Mean power:", mean_power * 1000, "uW")
peak_power = mean_power * peak_voltage / mean_voltage
print("Peak power:", peak_power * 1000, "uW")
plt.axhline(mean_voltage.n, color="red", linewidth=2)
plt.axhline(peak_voltage.n, color="red", linewidth=2)
plt.xlabel("Zeit / us")
plt.ylabel("Spannung / V")
plt.savefig("out/qswitch_osci." + SAVETYPE)
def plot_yag_kennlinie():
current, power, error_power = np.loadtxt("data/kennlinie_yag2.txt",
unpack=True)
error_current = 1 / math.sqrt(12)
plt.clf()
plt.errorbar(current,
power,
xerr=error_current,
yerr=error_power,
fmt=',',
color="black")
plt.xlabel("Strom / mA")
plt.ylabel("Leistung / mW")
plt.xlim(0, 700)
plt.savefig("out/kennlinie_yag_raw." + SAVETYPE)
lower = np.logical_and(current > 182.10, current < 410)
upper = current >= 410
fit_indices_list = []
fit_indices_list.append(power > 0.10)
#fit_indices_list.append(np.logical_and(power > 0.10, lower))
#fit_indices_list.append(np.logical_and(power > 0.10, upper))
diode_power, error_diode_power = current2diode_power(
current, error_current)
zero_power = power[current < 150]
background = zero_power.mean()
print("Background:", background, "mW")
power -= background
plt.clf()
plt.errorbar(diode_power,
power,
xerr=error_diode_power,
yerr=error_power,
fmt=',',
color="black")
plt.xlabel("Diodenleistung / mW")
plt.ylabel("Laserleistung / mW")
plt.savefig("out/kennlinie_yag_raw2." + SAVETYPE)
func = lambda x, slope, threshold: (x - threshold) * slope
fit = Fit(func)
fit.set_params(slope=0.016, threshold=16)
fit.set_data(xdata=diode_power,
ydata=power,
xerrors=error_diode_power,
yerrors=error_power)
fit.set_labels(xlabel="Diodenleistung / mW", ylabel="Laserleistung / mW")
fit.iterative_fit(1)
plt.clf()
fit.plot(plot_data=True, plot_fit=True, box="tr")
plt.savefig("out/kennlinie_yag_linear_fit." + SAVETYPE)
plt.clf()
fit.plot_residual(box="br", fmt="s")
plt.savefig("out/kennlinie_yag_linear_residual." + SAVETYPE)
fit = Fit(POLY2)
fit.set_data(xdata=diode_power,
ydata=power,
xerrors=error_diode_power,
yerrors=error_power)
fit.set_labels(xlabel="Diodenleistung / mW", ylabel="Laserleistung / mW")
fit.iterative_fit(5)
for i, fit_indices in enumerate(fit_indices_list):
plt.clf()
fit.plot(plot_fit=False)
subfit = fit[fit_indices]
subfit.iterative_fit(5)
#zero_power = power[power < 0.03]
#zero = umean(zero_power)
#plt.axhline(zero.n, color="blue")
print(subfit)
x = 200
try:
i_threshold = solve_quadratic(subfit.uvalue("a0"),
subfit.uvalue("a1"),
subfit.uvalue("a2"))
i_slope = 2 * x * subfit.uvalue("a2") + subfit.uvalue("a1")
except ValueError:
print("no solution", i)
else:
print("Threshold:", formatUFloat(i_threshold, unit="mW"))
print("Efficiency:", formatUFloat(i_slope * 100, unit="%"))
lines = "threshold = " + formatUFloat(
i_threshold, unit="mW"
) + "\n" + "efficiency at %d mW = " % x + formatUFloat(
i_slope * 100, unit="%")
info_box(lines, location="tl")
subfit.plot(plot_data=False)
plt.savefig("out/kennlinie_yag_%d_fit." % i + SAVETYPE)
plt.clf()
subfit.plot_residual(box="br", color="black", fmt="s")
plt.savefig("out/kennlinie_yag_%d_residual." % i + SAVETYPE)
plt.clf()
x = diode_power[diode_power > i_threshold.n]
plt.plot(x,
100 * (2 * x * subfit.value("a2") + subfit.value("a1")),
color="black")
#x_new = diode_power - i_threshold.n
#plt.plot(diode_power, 100*(x_new*subfit.value("a2") + subfit.value("a1") + subfit.value("a0")/x_new), color="red")
plt.xlabel("Diodenleistung / mW")
plt.ylabel("Effizienz / %")
plt.savefig("out/kennlinie_yag_%d_efficiency." % i + SAVETYPE)