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Commit c74b907f authored by JGlombitza's avatar JGlombitza
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EM scaling

parent 6378f249
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plotting.py
View file @ c74b907f
""" Plotting routines
"""
from __future__ import division
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.collections import PatchCollection
from matplotlib.colors import Normalize
from utils import distance2showeraxis
from pylab import *
def plot_array(v_stations, values, label='', vmin=None, vmax=None):
"""Plot a map *values* for an detector array specified by *v_stations*.
......@@ -30,37 +29,37 @@ def plot_array(v_stations, values, label='', vmin=None, vmax=None):
ax.set_ylabel('y [km]')
# def plot_traces_of_array_for_one_event(Smu, Sem, v_axis, v_stations, arraysize = 5):
# '''plot time traces of tanks around the tank with the smallest distance to shower core
# Sem = EM-SigmalTrace, Smu = Muon-SignalTrace, arraysize = length of array'''
# t = np.arange(0, 2001, 25)
# fig, axes = subplots(arraysize, arraysize, sharex=True, figsize=(29, 16), dpi=80, facecolor='w', edgecolor='k')
# t = np.arange(12.5, 2001, 25)
# tight_layout()
# coordVcore = np.argmin(distance2showeraxis(v_stations, v_axis))
# coordX = int(coordVcore / 11)
# coordY = coordVcore % 11
# coords = np.array(0)
# for j in range(arraysize):
# for k in range(arraysize):
# coords = np.append(coords, (coordX-2+j)*11 + (coordY-2+k))
# coords = coords[1:arraysizearraysize+1]
# for i, ax in enumerate(axes.flat):
# try:
# h1, h2 = Smu[coords[i]], Sem[coords[i]]
# except TypeError:
# h2 = np.histogram(0, bins=t)[0].astype(float)
# ax.step(t, h1 + h2, c='k', where='mid')
# ax.step(t, h1, label='$\mu$', where='mid')
# ax.step(t, h2, label='$e\gamma$', where='mid')
# ax.legend(title='r=%i' % coords[i], fontsize='x-small')
# ax.set_xlim(0, 1500)
# ax.grid(True)
# for k in range(arraysize):
# for l in range(arraysize):
# axes[k, l].set_xlabel('$t$ / ns')
# axes[k, l].set_ylabel('$S$ / VEM')
# savefig('trace_VEM.png')#, bbox_inches='tight')
def plot_traces_of_array_for_one_event(Smu, Sem, v_axis, v_stations, arraysize = 5):
'''plot time traces of tanks around the tank with the smallest distance to shower core
Sem = EM-SigmalTrace, Smu = Muon-SignalTrace, arraysize = length of array'''
t = np.arange(0, 2001, 25)
fig, axes = subplots(arraysize, arraysize, sharex=True, figsize=(29, 16), dpi=80, facecolor='w', edgecolor='k')
t = np.arange(12.5, 2001, 25)
tight_layout()
coordVcore = np.argmin(distance2showeraxis(v_stations, v_axis))
coordX = int(coordVcore/11)
coordY = coordVcore%11
coords = np.array(0)
for j in range(arraysize):
for k in range(arraysize):
coords = np.append(coords, (coordX-2+j)*11 + (coordY-2+k))
coords = coords[1:arraysize*arraysize+1]
for i, ax in enumerate(axes.flat):
try:
h1, h2 = Smu[coords[i]], Sem[coords[i]]
except TypeError:
h2 = np.histogram(0, bins=t)[0].astype(float)
ax.step(t, h1 + h2, c='k', where='mid')
ax.step(t, h1, label='$\mu$', where='mid')
ax.step(t, h2, label='$e\gamma$', where='mid')
ax.legend(title='r=%i' % coords[i], fontsize='x-small')
ax.set_xlim(0, 1500)
ax.grid(True)
for k in range(arraysize):
for l in range(arraysize):
axes[k, l].set_xlabel('$t$ / ns')
axes[k, l].set_ylabel('$S$ / VEM')
savefig('trace_VEM.png')#, bbox_inches='tight')
if __name__ == '__main__':
......
shower.py
View file @ c74b907f
......@@ -4,11 +4,10 @@ import numpy as np
from utils import *
import atmosphere
import gumbel
from pylab import *
atm = atmosphere.Atmosphere()
import gumbel
import plotting
def station_response(r, dX, logE=19, A=1):
""" Simulate time trace f(t) for a given SD station and shower.
Args:
......@@ -24,8 +23,9 @@ def station_response(r, dX, logE=19, A=1):
S0 = 1200 * 10**(logE - 19)
# scaling with mass number
a = A**0.15
S1 = S0 * a / (a + 1)
S2 = S0 * 1 / (a + 1)
b = 2 ## EM scaling
S1 = S0 * a / (a + 1) * 1/(b+1)
S2 = S0 * 1 / (a + 1) * b/(b+1)
# TODO: add scaling with zenith angle (CIC)
# ...
# scaling with distance of station to shower axis
......@@ -56,7 +56,7 @@ def station_response(r, dX, logE=19, A=1):
shift = np.exp(mean2) - np.exp(mean1)
bins = np.arange(0, 2001, 25) # time bins [ns]
h1 = np.histogram(np.random.lognormal(mean1, sigma1, size=N1), bins=bins)[0]
h2 = np.histogram(np.random.lognormal(mean2, sigma2, size=N2) + shift, bins=bins)[0]
h2 = np.histogram(np.random.lognormal(mean2, sigma2, size=N2) + 0.5*shift, bins=bins)[0]
# total signal (simplify: 1 particle = 1 VEM)
return h1, h2
......@@ -94,9 +94,12 @@ def rand_shower_geometry(N, logE, mass):
phi = 2 * np.pi * (np.random.rand(N) - 0.5)
zenith = rand_zenith(N)
v_axis = ang2vec(phi, zenith)
#### TESTIN ######################################################
phi = 2 *0* np.pi * (np.random.rand(N) - 0.5)
zenith = 60*np.pi/180*rand_zenith(N)
# shower core on ground (random offset w.r.t. grid origin)
v_core = SPACING * (np.random.rand(N, 3) - 0.5)
v_core = 0*SPACING * (np.random.rand(N, 3) - 0.5)
v_core[:, 2] = HEIGHT # core is always at ground level
# shower maximum, require h > hmin
......@@ -125,16 +128,19 @@ if __name__ == '__main__':
# showers
nb_events = 2
logE = 18.5 + 1.5 * np.random.rand(nb_events)
logE = 20 *np.ones(nb_events)
mass = 1 * np.ones(nb_events)
Xmax, v_axis, v_core, v_max = rand_shower_geometry(nb_events, logE, mass)
# detector response for each event
T = np.zeros((nb_events, nb_stations))
S = np.zeros((nb_events, nb_stations, 80))
S1 = np.zeros((nb_events, nb_stations, 80))
S2 = np.zeros((nb_events, nb_stations, 80))
for i in range(nb_events):
print(i)
s1, s2 = detector_response(logE[i], mass[i], v_axis[i], v_max[i], v_stations)
S[i] = s1 + s2
S1[i] = s1
S2[i] = s2
T[i] = arrival_time_planar(v_stations, v_core[i], v_axis[i])
# add per ton noise on arrival time
......@@ -143,28 +149,30 @@ if __name__ == '__main__':
# add time offset per event (to account for core position)
T += 100E-9 * (np.random.rand(nb_events, 1) - 0.5)
# add relative noise to signal pulse
S += 0.02 * S * np.random.randn(*S.shape)
# add absolute noise to signal pulse
S += 0.5 + 0.2 * np.random.randn(*S.shape)
# # add relative noise to signal pulse
# S1 += 0.02 * S1 * np.random.randn(*S1.shape)
# S2 += 0.02 * S2 * np.random.randn(*S2.shape)
# # add absolute noise to signal pulse
# S1 += 0.5 + 0.2 * np.random.randn(*S1.shape)
# S2 += 0.5 + 0.2 * np.random.randn(*S2.shape)
plotting.plot_traces_of_array_for_one_event(Smu=S1[0], Sem=S2[0], v_axis=v_axis[0], v_stations=v_stations, arraysize = 5)
# trigger threshold: use only stations with sufficient signal-to-noise
c = S.sum(axis=-1) < 80 * 0.55
T[c] = np.NaN
S[c] = np.NaN
## c = S.sum(axis=-1) < 80 * 0.55
## T[c] = np.NaN
## S[c] = np.NaN
# TODO: apply array trigger (3T5)
# save
np.savez_compressed(
'showers.npz',
logE=logE,
mass=mass,
Xmax=Xmax,
time=T,
signal=S,
showercore=v_core,
showeraxis=v_axis,
showermax=v_max,
detector=v_stations)
# np.savez_compressed(
# 'showers.npz',
# logE=logE,
# mass=mass,
# Xmax=Xmax,
# time=T,
# signal=S,
# showercore=v_core,
# showeraxis=v_axis,
# showermax=v_max,
# detector=v_stations)
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