eclComputePulseTemplates_Step2.py

#!/usr/bin/env python3
 
 
 
import numpy as np
from scipy.fftpack import fft, ifft
import ROOT
from ROOT import TFile
import sys
from array import array
import argparse
 
# '''
# Third step in waveform template calibrations.  Computes hadron pulse shape using photon template input.
# See eclComputePulseTemplates_Step0.cc for README instructions.
# '''
 
 
def EvalGamComp(tin, ttrg):
    if tin < ttrg:
        return 0
    Ratio = 0.56936
    FastTau = 851.28 * (0.88348588)  # Converting to sample number time scale
    SlowTau = 5802.0 * (0.88348588)  # Converting to sample number time scale
    val = Ratio * ((1. / FastTau) * np.exp(-(tin - ttrg) / FastTau)) + \
        (1 - Ratio) * ((1. / SlowTau) * np.exp(-(tin - ttrg) / SlowTau))
    return val
 
 
def EvalHadronComp(tin, ttrg):
    HadronTau = 630. * (0.88348588)  # Converting to sample number time scale
    if tin < ttrg:
        return 0
    val = ((1. / HadronTau) * np.exp(-(tin - ttrg) / HadronTau))
    return val
 
 
def EvalAnyComp(tin, ttrg, TauIn):
    TauIn *= (0.88348588)  # Converting to sample number time scale
    if tin < ttrg:
        return 0
    val = ((1. / TauIn) * np.exp(-(tin - ttrg) / TauIn))
    return val
 
 
def CalcShaperOutput(muonShaper, muonInitial, inputPreShaper, ITER):
    impulse = (ifft(fft(muonShaper) / fft(muonInitial)))
    outputShaper = np.real(ifft(fft(impulse) * fft(inputPreShaper)))
    base = outputShaper[ITER]
    i = 0
    while i < len(outputShaper):
        outputShaper[i] -= base
        i = i + 1
    outputShaper[0] = 0
    print(outputShaper.max())
    return outputShaper
 
 
def GetShaperOutput(ratio, flg, shaperMuonFunc):
 
    Ns = 100000
    TLen = 100000.
    to_ns = TLen/Ns
 
    PMT_trigger_time = 1000. * to_ns
 
    Time = []
    TimeShp = []
    ShaperDSP_output_muon_array = []
    PMT_output_muon_array = []
    PMT_output_array = []
 
    for i in range(0, Ns):
        t = i * to_ns
        Time.append(t)
        TimeShp.append(t)
        ShaperDSP_output_muon_array.append(shaperMuonFunc[i])
        PMT_output_muon_array.append(EvalGamComp(t, PMT_trigger_time))
        if ratio <= 1.:
            PMT_output_array.append((1 - ratio) * EvalGamComp(t, PMT_trigger_time) + ratio * (EvalHadronComp(t, PMT_trigger_time)))
        else:
            PMT_output_array.append((2 - ratio) * EvalGamComp(t, PMT_trigger_time) +
                                    (ratio - 1) * (EvalAnyComp(t, PMT_trigger_time, 10)))
 
    if(flg == 0):
        return Time, PMT_output_array
    if(flg == 1):
        return Time, PMT_output_muon_array
    if(flg == 2):
        return Time, ShaperDSP_output_muon_array
    if(flg == 3):
        ShaperDSP_output_array = []
        if(ratio <= 1.):
            ShaperDSP_output_array = CalcShaperOutput(ShaperDSP_output_muon_array, PMT_output_muon_array, PMT_output_array, 0)
        else:
            ShaperDSP_output_array = CalcShaperOutput(ShaperDSP_output_muon_array, PMT_output_muon_array, PMT_output_array, 30)
        j = 0
        Time_us = []
        while j < len(Time):
            Time_us.append(Time[j] / (1000.))
            j = j + 1
        return Time_us, ShaperDSP_output_array
 
 
OutputDirectory = "./"
if(OutputDirectory == ""):
    print("Error set ouput directory")
    sys.exit()
 
 
def argument_parser():
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument('Low', type=int, help='First CellID to be processed')
    parser.add_argument('High', type=int, help='Last CellID to be processed')
    return parser
 
 
args = argument_parser().parse_args()
Low = args.Low
High = args.High
 
print(Low, High)
 
f1 = ROOT.TFile(OutputDirectory + "PhotonShapes_Low" + str(Low) + "_High" + str(High) + ".root", "update")
f1.cd()
mt = f1.Get("mtree")
entries = mt.GetEntries()
print(entries)
 
TFactor = 30
 
outFile = TFile(OutputDirectory + "HadronShapes_Low" + str(Low) + "_High" + str(High) + ".root", "RECREATE")
outTree = ROOT.TTree("HadronTree", "")
TimeAll_A = array('d', 1000 * [0.])
ValuePhoton_A = array('d', 1000 * [0.])
ValueHadron_A = array('d', 1000 * [0.])
ValueDiode_A = array('d', 1000 * [0.])
outTree.Branch("TimeAll_A", TimeAll_A, 'TimeAll_A[1000]/D')
outTree.Branch("ValuePhoton_A", ValuePhoton_A, 'ValuePhoton_A[1000]/D')
outTree.Branch("ValueHadron_A", ValueHadron_A, 'ValueHadron_A[1000]/D')
outTree.Branch("ValueDiode_A", ValueDiode_A, 'ValueDiode_A[1000]/D')
 
i = 0
for i in range(entries):
    mt.GetEntry(i)
    if(mt.PhotonArray[1] < -100):
        for j in range(1000):
            ValuePhoton_A[j] = -999
            TimeAll_A[j] = -999
            ValueHadron_A[j] = -999
            ValueDiode_A[j] = -999
    else:
        flag = 3
        Time3, ValuesHadron_A = GetShaperOutput(1, flag, mt.PhotonArray)
        Time4, ValuesDiode_A = GetShaperOutput(2, flag, mt.PhotonArray)
        Time6, ValuesPhoton_A = GetShaperOutput(0, flag, mt.PhotonArray)
 
        factor = TFactor
        for j in range(1000):
            if(flag == 3):
                ValuePhoton_A[j] = mt.PhotonArray[j * factor]
            else:
                ValuePhoton_A[j] = ValuesPhoton_A[j * factor]
            TimeAll_A[j] = Time3[j * factor]
            ValueHadron_A[j] = ValuesHadron_A[j * factor]
            ValueDiode_A[j] = ValuesDiode_A[j * factor]
    outTree.Fill()
outFile.cd()
outTree.Write()
outFile.Write()
sys.exit()