ZdcRecChannelTool.cxx

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/*
  Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
*/
 
/*
 * ZdcRecChannelTool.cxx
 *
 *  Created on: Nov 24, 2009
 *      Author: leite
 */
 
 
#include <iostream>
#include <fstream>
 
#include <valarray>
#include <numeric>
#include <algorithm>
#include <functional>
#include <vector>
#include <map>
 
#include <cmath>
 
#include "TMath.h"
 
#include "GaudiKernel/IInterface.h"
#include "GaudiKernel/MsgStream.h"
 
#include "ZdcEvent/ZdcDigits.h"
#include "ZdcEvent/ZdcDigitsCollection.h"
#include "ZdcRec/ZdcRecChannelTool.h"
#include "ZdcRec/ZdcSignalSinc.h"
#include "ZdcIdentifier/ZdcID.h"
#include "ZdcConditions/ZdcCablingService.h"
 
#include "CxxUtils/checker_macros.h"
 
//Interface Id for retrieving the tool
//Consider creating a factory class and  define the interface
static const InterfaceID IID_IZdcRecChannelTool("ZdcRecChannelTool", 1, 1);
 
//==================================================================================================
const InterfaceID& ZdcRecChannelTool::interfaceID()
{
    return IID_IZdcRecChannelTool;
 
}
//==================================================================================================
 
//==================================================================================================
ZdcRecChannelTool::ZdcRecChannelTool(const std::string& type,
                     const std::string& name,
                     const IInterface* parent) :
                           AthAlgTool(type, name, parent),
                           m_bwl_time_resolution(100),
                           m_nsamples(7),
                           m_sample_time (25.),
                           m_cfd_fraction (0.35),
                           m_cfd_delay (20.)
 
{
    //Declare properties here...
 
    declareInterface<ZdcRecChannelTool>(this);
 
    declareProperty("ZeroSuppress", m_zeroSupress = 0,
                            "Supress channels with only 0");
 
    declareProperty("DeltaPeak", m_delta = 5,
                            "Minimum difference between min and max to be considered a signal");
 
 
}
//==================================================================================================
 
//==================================================================================================
ZdcRecChannelTool::~ZdcRecChannelTool()
{
}
//==================================================================================================
 
 
//==================================================================================================
StatusCode ZdcRecChannelTool::initialize()
{
    msg(MSG::INFO) << "Initializing " << name() << endmsg;
 
    //Get the pedestal information for the channels.
    //For now, this is a file; later on it will be moved to a database
 
 
    // Bandwidth interpolation method initializations
    // making sure we use only 50 ps steps for the resolution
 
    if (m_bwl_time_resolution < 50)  m_bwl_time_resolution = 50;
    m_bwl_time_resolution = floor(m_bwl_time_resolution/50.) * 50;
 
    int s = m_nsamples*(s_SAMPLING_TIME/m_bwl_time_resolution);
 
    m_wfm_bwl.resize(s);
 
    msg(MSG::INFO) << "Using a time step of  "
                   <<  m_bwl_time_resolution
                   << "ps for the Bandwidth Limited Sin(x)/x Interpolation: "
                   << " Vector Size = "
                   << s
                   << endmsg;
 
 
 
 
    // GSL Interpolation functions initializations
    m_interp_acc = gsl_interp_accel_alloc ();
    // Thread-safe according to https://www.gnu.org/software/gsl/doc/html/roots.html
    const gsl_interp_type *interp_type ATLAS_THREAD_SAFE = gsl_interp_akima;
    m_spline = gsl_spline_alloc (interp_type, 14); //FIXME: TWICE THE SAMPLES
 
        //Load Mapping
    msg(MSG::DEBUG) << "--> ZDC : START OF MODIFICATION 0" << endmsg ;
 
    const ZdcID* zdcId = nullptr;
    if (detStore()->retrieve( zdcId ).isFailure() ) {
        msg(MSG::ERROR) << "execute: Could not retrieve ZdcID object from the detector store" << endmsg;
        return StatusCode::FAILURE;
    }
    else {
        msg(MSG::DEBUG) << "execute: retrieved ZdcID" << endmsg;
    }
    m_zdcId = zdcId;
 
    msg(MSG::DEBUG) << "--> ZDC : END OF MODIFICATION 0" << endmsg ;
    return StatusCode::SUCCESS;
}
//==================================================================================================
 
//==================================================================================================
StatusCode ZdcRecChannelTool::finalize()
{
    msg(MSG::INFO) << "Finalizing " << name() << endmsg;
 
    gsl_spline_free (m_spline);
    gsl_interp_accel_free (m_interp_acc);
 
    return StatusCode::SUCCESS;
}
//==================================================================================================
 
//Returns a pointer to a RawChannel Collection with energy and time
//==================================================================================================
int  ZdcRecChannelTool::makeRawFromDigits(
                                           const ZdcDigitsCollection& mydata,
                                           ZdcRawChannelCollection &  ChannelCollection)
 
{
    //ZdcRawChannel *z;
    Identifier id;
    float soma = 0.;
    float pico = 0.;
    float tzc  = 0.;
    float tsr  = 0.;
    float t0   = 0.;
    float t1   = 0.;
    float m    = 0.;
 
    //bool pp = false;
    int i = 0;
    //int j = 0;
    int k = 0;
    //int s = 0;
    int ped = 0;
    int imax = 0;
 
    int mSide    = 0;
    int mModule  = 0;
    int mType    = 0;
    int mChannel = 0;
 
    int ncha = 0;
 
 
    //TODO use BOOST containers here, more flexible and inteligent, and it will
    //      nevertless stay inside this method, so no fussing with complex collections
 
    std::vector<std::vector<int> > wfm;
    std::vector<std::vector<int> >::iterator vit;
    std::vector<int>::iterator it;
 
    std::vector<float> energy_sum;
    std::vector<float> energy_peak;
    std::vector<float>  time_cfd;
    std::vector<float>  time_sratio;
    std::vector<float>  chi;
 
    std::vector<int>  v;
    std::vector<int>  vd;
    std::vector<int>  vi;
 
    std::vector<float> vcfd1;
    std::vector<float> vcfd2;
    std::vector<float> vcfd3;
 
    //Identifier::value_type zId;
 
 
    // Main procedure: Reduce the data to energy and time, and store it into
    // ZdcRawDataCollection
 
    //digits_p = *mydata.begin();
    //nsamples = digits_p->m_nSamples;
    //vi.resize(2*nsamples);
    vi.resize(14);
 
    for (const ZdcDigits* digits_p : mydata) {
 
            msg(MSG::DEBUG) << "--> ZDC : START OF MODIFICATION " << endmsg ;
        id = digits_p->identify();
        mSide    = m_zdcId->side(id);
        mModule  = m_zdcId->module(id);
        mType    = m_zdcId->type(id);
        mChannel = m_zdcId->channel(id);
 
        msg(MSG::DEBUG) << "--> ZDC : ZdcRecChannelTool::makeRawFromDigits: "
                            << " id;Side;Module;Type;Channel:  "
                            << id.getString() << ";"
                            << mSide    << ";"
                            << mModule  << ";"
                            << mType    << ";"
                            << mChannel << endmsg;
 
 
        //1) Check the high gain. If it has saturation (max = FADC_SATURATION)
        //   drop and use the low gain
        //
        wfm.clear();
        wfm.resize(2);
        energy_sum.clear();
        energy_peak.clear();
        time_cfd.clear();
        time_sratio.clear();
        chi.clear();
 
        wfm[0] = digits_p->get_digits_gain0_delay0();
        if (wfm[0].empty()) {
            msg(MSG::DEBUG) << "ZERO SIZE g0d0 at ID  " << id.getString() << endmsg;
            wfm[0].resize(7);
        }
 
        wfm[1] = digits_p->get_digits_gain1_delay0();
        if (wfm[1].empty()) {
            msg(MSG::DEBUG) << "ZERO SIZE g1d0 at ID  " << id.getString() << endmsg;
            wfm[1].resize(7);
        }
 
 
        msg(MSG::DEBUG) << " ------- 1 " << endmsg;
 
        //2) Check to see if there are delayed information
        //        module type 0 -> (full Energy) delayed info
        //        module type 1 -> (segmented) do not have delayed info
        //        - use the identifiers here -
        //
        //if (((id.get_identifier32().get_compact() >> 21) & 1) == 0) {
 
        //zId = id.get_identifier32().get_compact();
 
        //Only type 0 (Total Module Energy) has delay information
        //if ( ( (zId == 0xec000000) || (zId == 0xed000000) ||
        //      (zId == 0xec200000) || (zId == 0xed200000) ||
        //      (zId == 0xec400000) || (zId == 0xed400000) ||
        //      (zId == 0xec600000) || (zId == 0xed600000) ) ) {
        if (mType == 0) {
            //std::cout << "*** Resize 4 at Id " << zId << std::endl ;
            wfm.resize(4);
            wfm[2] = digits_p->get_digits_gain0_delay1();
            wfm[3] = digits_p->get_digits_gain1_delay1();
        }
 
 
 
 
        msg(MSG::DEBUG) << " ------- 2 " << endmsg;
        //3) Subtratct baseline pedestal
        //We need to be carefull. Sometimes the vector size here is zero (PPM flaw) and
        //the code crashs if we do not treat this.
        i = 0;
        for (vit = wfm.begin(); vit<wfm.end(); ++vit) {
            if (vit->empty()) vit->resize(7);
            ped = *vit->begin();
            for (it=vit->begin(); it<vit->end();++it) {
                (*it) -= ped;
                //if ((i==1) || (i==3) ) (*it) = (*it) * s_GAIN_RATIO;
            }
            i++;
        }
        /*
        if (((id.get_identifier32().get_compact() >> 21) & 1) == 0) {
            if ( ( *(std::max_element(wfm[0].begin(),wfm[0].end()) ) > 300 ) ||
                 ( *(std::max_element(wfm[1].begin(),wfm[1].end()) ) > 300 ) ||
                 ( *(std::max_element(wfm[2].begin(),wfm[2].end()) ) > 300 ) ||
                 ( *(std::max_element(wfm[3].begin(),wfm[3].end()) ) > 300 ) ) {
                //std::cout << "&&&&& OVFLW &&&&&" << std::endl;
                msg(MSG::DEBUG) << "%%%%%%%% ID "   << id.getString() << endmsg;
                msg(MSG::DEBUG) << "%%%%%%%% g0d0 " << wfm[0] << endmsg;
                msg(MSG::DEBUG) << "%%%%%%%% g1d0 " << wfm[1] << endmsg;
                msg(MSG::DEBUG) << "%%%%%%%% g0d1 " << wfm[2] << endmsg;
                msg(MSG::DEBUG) << "%%%%%%%% g1d1 " << wfm[3] << endmsg;
 
            }
        }
        else {
            if ( ( *(std::max_element(wfm[0].begin(),wfm[0].end()) ) > 20 )  ||
                 (*(std::max_element(wfm[1].begin(),wfm[1].end()) ) > 20 ) )    {
                //std::cout << "**** g1d0 OVFLW ****" << std::endl;
                msg(MSG::DEBUG) << "******** ID "   << id.getString() << endmsg;
                msg(MSG::DEBUG) << "******** g0d0 " << wfm[0] << endmsg;
                msg(MSG::DEBUG) << "******** g1d0 " << wfm[1] << endmsg;
 
            }
        }
        */
        msg(MSG::DEBUG) << " ------- 3 " << endmsg;
        //4) Calculate the quantities of interest. For now it will be Energy (by SUM and Peak)
        //   and timing (using undelayed, delayed and combined)
        //   Include a quality factor chi which will follow design definitions for
        //   chi <  0 -> something very bad (for example saturation)
        //   0 >= chi >= 1 -> depends on the algorithm to be used; 1 is very good
 
        k = 0;
 
        // GSL for CFD Timing
 
        getTimingCFD(id, wfm);
 
        // Sinx/x Timing (GSL)
        // Not yet needed
        //getTimingSinc(id, wfm);
 
 
        // Sinx/x Timing (Andrei's coding)
 
        getTimingSinc2(id, wfm);
 
        for (vit = wfm.begin(); vit<wfm.end(); ++vit) {
            v = *vit;
            soma =   std::accumulate(v.begin(), v.end(), 0) ;
            pico =  *(std::max_element(v.begin(),v.end()) );
            energy_sum.push_back ((float) soma);
            energy_peak.push_back((float) pico);
            if (pico >= (s_FADC_SATURATION -42)) {
                chi.push_back(-1);
            }
            else {
                chi.push_back(0); //nothing to say here
            }
 
 
            // Now, lets also calculate the timing by the ratio of the
            // second to the third sample. Because the correction is module
            // dependent, we postpone the calibration to the next stage
            // Time will be
            // t = (r-R0)/(R1-R0) ns
            // where r =  v[imax -1]/v[imax], (imax = peak)
            // R0, R1 are constants that depends on the module
 
            // Get the position of the maximum
            // Take care of div by 0
            imax = std::max_element(v.begin(),v.end()) - v.begin();
            if ((v[imax] != 0) && (imax>0)) {
                tsr = ((float) v[imax-1])/v[imax];
            }
            else {
                tsr = v[imax];
            }
 
            time_sratio.push_back(tsr);
 
 
            msg(MSG::DEBUG) << "--> ZDC : ZdcRecChannelTool " << id.getString() <<
                           "  Type=" << k  <<
                           "  Energy Sum="  << soma  <<
                           "  Energy Peak=" << pico  <<
                           "  Chi=" << *(chi.end() -1) <<
                           "  t0="  << t0 << "  t1=" << t1 <<
                           "  m="   << m <<
                           "  Time by CFD=" << tzc <<
                           "  Peak at imax = " << imax <<
                                               "  v[imax-1] = " << (imax > 0 ? v[imax-1] : 0) <<
                           "  V[imax] = " << v[imax] <<
                           "  Sample Ratio A1/A2=" << tsr << endmsg;
            k++;
        }
 
        msg(MSG::DEBUG) << " ------- 5 " << endmsg;
        ZdcRawChannel *z = new ZdcRawChannel(id);
 
        msg(MSG::DEBUG) << "CFD EXACT***** ID "<< id.getString() << m_cfd_result << endmsg;
        msg(MSG::DEBUG) << "CFD APPRO***** ID "<< id.getString() << m_bwl_tpeak << endmsg;
 
        z->setSize(3*k); //FIXME very important, but not smart move ...
        /*
         *   What can go here:
         *
         *   energy_peak -> max sample peak
         *   energy_sum  -> sum of samples
         *   time_sratio -> from ratio of samples
         *
         *   m_bwl_vpeak -> Energy  peak from sinc interpolation
         *   m_bwl_tpeak -> Time at peak from sinc interpolation
         *
         *   m_bwl_vpeak2 -> Energy  peak from sinc interpolation (AP code)
         *   m_bwl_tpeak2 -> Time at peak from sinc interpolation (AP code)
         *
         *   m_cfd_result -> timing by software CFD
         */
        for (i=0;i<k;i++) {
            z->setEnergy (i, energy_peak[i]);
            z->setTime   (i, time_sratio[i]);
            z->setChi    (i, chi[i]);
 
            z->setEnergy (i+k, m_bwl_vpeak2[i]);
            z->setTime   (i+k, m_bwl_tpeak2[i]);
            z->setChi    (i+k, chi[i]);
 
            z->setEnergy (i+2*k, energy_sum[i]);
            z->setTime   (i+2*k, m_cfd_result[i]);
            z->setChi    (i+2*k, chi[i]);
 
            //z->setEnergy(i+k, energy_peak[i]);
            //z->setTime(i,time_cfd[i]);
 
 
        }
        ncha++;
        ChannelCollection.push_back(z);
        msg(MSG::DEBUG) << " ------- 6 " << endmsg;
    }
    msg(MSG::DEBUG) << "--> ZDC : ZdcRecChannelTool ChannelCollection size " << ChannelCollection.size() << endmsg ;
    return ncha;
}
 
 
 
//==================================================================================================
 
//==================================================================================================
int ZdcRecChannelTool::getCalibration(
                                                    const ZdcDigitsCollection& mydata,
                                                    ZdcRawChannelCollection &  ChannelCollection)
{
    int ncha = 0;
    for (const ZdcDigits* digits_p : mydata) {
        digits_p->identify();
        ncha++;
    }
    int ncal = ChannelCollection.size();
    msg(MSG::DEBUG) << " Zdc ---> Calibration for " << ncal << " channels " << endmsg;
    return  ncha;
}
//==================================================================================================
 
//==================================================================================================
int ZdcRecChannelTool::getTimingCFD(const Identifier& id,  const std::vector<std::vector <int> >& wfm )
{
 
    unsigned int i = 0;
    //unsigned int j = 0;
    unsigned int nsamples_local = 14;
    double v[14];
    double t[14];
    double td[14];
    double vd[14];
    double vf[14];
 
    std::vector<float> vaux;
    unsigned int tmin = 0;
    unsigned int tmax = 0;
 
    double x_lo = 0.0;
    double x_hi = 200.0;
    float r = 0;
    int status = 0;
 
    int iterations = 0;
    int max_iterations = 100;
 
    // Thread-safe according to https://www.gnu.org/software/gsl/doc/html/roots.html
    const gsl_root_fsolver_type *T ATLAS_THREAD_SAFE = gsl_root_fsolver_brent;
    gsl_root_fsolver *s = gsl_root_fsolver_alloc (T);
    gsl_function F;
 
    CCallbackHolder cc{};
 
 
    std::vector<int>  y;
 
    std::vector<std::vector<int> >::const_iterator vit;
    std::vector<int>::iterator it;
 
    std:: vector<float> result;
 
    m_cfd_result.clear();
 
    msg(MSG::DEBUG) << "--> ZDC : ZdcRecChannelTool::getTimingCFD: Id " << id.getString() ;
 
    for (i=0;i<14;i++) {
        t[i]  = 0.;
        td[i] = 0.;
        v[i]  = 0.;
        vd[i] = 0.;
        vf[i] = 0.;
    }
 
    for (vit = wfm.begin(); vit<wfm.end(); ++vit) {
        y = *vit;
        i = 4;
        for (it=y.begin();it != y.end();++it) {
            v[i] = *it;
            i++;
        }
        for (i=0;i<nsamples_local;i++) {
            t[i] = m_sample_time*i ; //TODO: Do it only once somewhere else
            td[i] = t[i]-m_cfd_delay;
        }
 
        gsl_spline_init (m_spline, t, v, nsamples_local);
 
 
 
        for (i=0;i<nsamples_local;i++) {
            vd[i] = gsl_spline_eval (m_spline, td[i], m_interp_acc);
            vf[i] = vd[i] - v[i]* m_cfd_fraction;
        }
 
        //gsl_spline_free (m_spline); // Not sure if this is necessary
 
        gsl_spline_init (m_spline, t, vf, nsamples_local);
 
        cc.cls = this;
        F.function = &ZdcRecChannelTool::fxCallback;
        F.params = &cc;
 
 
 
 
        //Get the range for root finding
        vaux.assign(vf,vf+14);
        tmin = std::min_element(vaux.begin(), vaux.end()) - vaux.begin();
        tmax = std::max_element(vaux.begin(), vaux.end()) - vaux.begin();
        if (tmin < tmax)
            {
              x_lo = t[tmin];
              x_hi = t[tmax];
            }
          else
            {
              x_lo = t[tmax];
              x_hi = t[tmin];
            }
        //std::cout << "::::::::::tmin,tmax " << x_lo << " " << x_hi << std::endl;
 
        /*
        std::cout << "::::::::::V  " << id.getString() << " "<< j << " " ;
        for (i=0;i<nsamples_local;i++) {
            std::cout << v[i] << " " ;
        }
        std::cout << std::endl;
 
        std::cout << "::::::::::VD  " << id.getString() << " "<< j << " " ;
        for (i=0;i<nsamples_local;i++) {
            std::cout << vd[i] << " " ;
        }
        std::cout << std::endl;
 
        std::cout << "::::::::::VF  " << id.getString() << " "<< j << " " ;
        for (i=0;i<nsamples_local;i++) {
                    std::cout << vf[i] << " " ;
        }
        std::cout << std::endl;
       */
        //j++;
 
        gsl_root_fsolver_set (s, &F, x_lo, x_hi);
 
        iterations = 0;
        do
            {
                iterations++;
                status = gsl_root_fsolver_iterate(s);
                r =      gsl_root_fsolver_root(s);
                x_lo =   gsl_root_fsolver_x_lower(s);
                x_hi =   gsl_root_fsolver_x_upper(s);
                status = gsl_root_test_interval (x_lo, x_hi, 0, 0.001);
                //if (status == GSL_SUCCESS) printf ("Converged:\n");
            }
 
        while (status == GSL_CONTINUE && iterations < max_iterations);
        //std::cout << " COnvergence ----> " << iterations << " " << r << " " << x_lo << " " << x_hi << std::endl;
        m_cfd_result.push_back(r-100); //subtraction accounts for zero padding
    }
    gsl_root_fsolver_free (s);
    return 0;
}
//==================================================================================================
 
//==================================================================================================
double ZdcRecChannelTool::fx(double x0, void *params)
    {
        ZdcRecChannelTool* p = static_cast<ZdcRecChannelTool*>(params);
        //std::cout << " MMMMMMMMMMMMAAAAAAAAA " << p->m_cfd_delay << std::endl;
        return gsl_spline_eval (p->m_spline, x0, p->m_interp_acc);
    }
//==================================================================================================
 
/*BW limited signal interpolation by sin(t)/t
 * This method returns the peak value and the peak time by interpolating a vector
 * in 50 ps step (which will be the resolution). For this resolution, the vector size is
 * calculated as vsize = m_nsamples * s_SAMPLING_TIME/m_bwl_time_resolution. To avoid
 * too small steps, only steps of 50 ps are allowed in this (for now).
 */
 
//==================================================================================================
int ZdcRecChannelTool::getTimingSinc(const Identifier& id,  const std::vector<std::vector <int> >& wfm )
{
    unsigned int i = 0;
    unsigned int k = 0;
    int t = 0;
    int tpeak = 0;
    float tfpeak = 0.;
    float vpeak = 0.;
    float x = 0.;
    float z = 0.;
    float t_cor = 0. ;
    int mSide = 0;
    int mModule = 0;
    int mType = 0;
    int mChannel = 0;
    int do_tcor = false;
 
 
    std::vector<float> vt(7);
    std::vector<int> y;
 
    std::vector<float>::iterator vf_it;
    std::vector<std::vector<int> >::const_iterator vvi_it;
 
    //initialize the vectors
    m_bwl_vpeak.resize(4,0);
    m_bwl_tpeak.resize(4,0);
 
    //zId = id.get_identifier32().get_compact();
    msg(MSG::DEBUG) << "--> ZDC : START OF MODIFICATION 2 " << endmsg ;
        mSide    = m_zdcId->side(id);
        mModule  = m_zdcId->module(id);
        mType    = m_zdcId->type(id);
        mChannel = m_zdcId->channel(id);
        msg(MSG::DEBUG) << "--> ZDC : ZdcRecChannelTool::getTimingSinc: "
                        << " id;Side;Module;Type;Channel:  "
                        << id.getString() << ";"
                        << mSide    << ";"
                        << mModule  << ";"
                        << mType    << ";"
                        << mChannel << endmsg;
 
    for (vvi_it = wfm.begin(); vvi_it<wfm.end(); ++vvi_it) {
        //FIXME: Change to the method of ID identification
        //if ((zId == 0xec000000) || (zId == 0xed000000) ||
        //  (zId == 0xec200000) || (zId == 0xed200000) ||
        //  (zId == 0xec400000) || (zId == 0xed400000) ||
        //  (zId == 0xec600000) || (zId == 0xed600000) )
        //  {
            if (mType == 0) {
 
            y = *vvi_it;
 
            t = 0;
            //Fill the interpolated vector
            for (vf_it = m_wfm_bwl.begin(); vf_it != m_wfm_bwl.end(); ++vf_it ) {
                z = 0.;
                for (i=0;i<m_nsamples;i++) {
                    x =  (TMath::Pi() *(t*0.1 - i*25.))/25. ;
                    if (fabs(x) < 1e-8) {
                        z = z + y[i]*1.0;
                    }
                    else {
                        z =  z + y[i]*(sin(x)/(x));
                    }
                }
                *vf_it = z;
                //if (id.get_identifier32().get_compact() == 0xec400000)  {
                //std::cout << "========== " << t << "  " << *vf_it << std::endl;
                //}
                t++;
            }
 
            //Get The maximum and the position of the peak
            tpeak = std::max_element(m_wfm_bwl.begin(),m_wfm_bwl.end()) - m_wfm_bwl.begin();
            vpeak = m_wfm_bwl[tpeak];
 
            //Account for 100 ps step
            tfpeak = tpeak/10.;
 
 
            //The correction for non-linear behavior
            //Right now only two channels implemented:
            //First hadronic modules for A and C sides
            //zId = id.get_identifier32().get_compact();
 
            //Side C, Mod 0, Low Gain
            //if (id.get_compact() == 0xec400000) {
            if ( (mSide == -1) && (mType == 0) && (mModule == 0) && (mChannel == 0) ) {
                t_cor = -777.277 +
                    33.685      * tfpeak +
                    -0.483265   * pow(tfpeak,2) +
                    0.00234842 * pow(tfpeak,3);
            }
 
            //Side A, Mod 0, Low Gain
            //if (id.get_compact() == 0xed400000) {
            if ( (mSide == 1) && (mType == 0) && (mModule == 0) && (mChannel == 0) ) {
            //piecewise fit
                if (tfpeak <= 68) {
                    t_cor = -1749.27 +
                        80.5426 * tfpeak +
                        -1.229    * pow(tfpeak,2) +
                        0.006276 * pow(tfpeak,3);
                }
                else {
                    t_cor = -1965.52 +
                        84.0379     * tfpeak +
                        -1.19169    * pow(tfpeak,2) +
                        0.005659   * pow(tfpeak,3);
                }
            }
 
            if (do_tcor) m_bwl_tpeak[k] = t_cor;
            else m_bwl_tpeak[k] = tpeak;
            m_bwl_vpeak[k] = vpeak;
        }
        else {
            m_bwl_tpeak[k] = -999;
            m_bwl_vpeak[k] = -999;
        }
        k++;
    }
    return k;
}
//==================================================================================================
 
/*BW limited signal interpolation by sin(t)/t
 * Andrei Poblaguev implementation
 */
//==================================================================================================
int ZdcRecChannelTool::getTimingSinc2(const Identifier& id, const std::vector<std::vector <int> >& wfm )
{
      int i = 0;
      int wfmIndex = 0;
      //float energy = 0.;
      //float w = 0.;
      //float timing = 0.;
      int error = 0;
      int warning = 0;
 
      double Slices[10];
      int NSlice = 5;
      double gain=1.;
      double pedestal=0;
      double CFD_frac = 1.0;
      bool corr=0;
 
      std::vector<std::vector<int> >::const_iterator vit;
      std::vector<int>  y;
 
      int mType    = 0;
 
 
 
      //Identifier::value_type zId;
 
      /*
       Id:       Side       Module Number  Module Type
       0xec000000   0  (C)           0               0
       0xec400000   0  (C)           1               0
       0xec800000   0  (C)           2               0
       0xecc00000   0  (C)           3               0
       0xed000000   1  (A)           0               0
       0xed400000   1  (A)           1               0
       0xed800000   1  (A)           2               0
       0xedc00000   1  (A)           3               0
       */
      //Initialize the vectors
      m_bwl_vpeak2.resize(4,0);
      m_bwl_tpeak2.resize(4,0);
 
      mType    = m_zdcId->type(id);
 
 
 
      //This controls if we get timing from all channels or
      //from only a subset
      wfmIndex = 2;
      i = 0;
      for (vit = wfm.begin(); vit<wfm.end(); ++vit) {
          if ( (i < wfmIndex) && (mType == 0) )
            {
              y = *vit;
 
              // This is for the sinx/x interpolation
 
              for(int I=0;I<NSlice;I++)  {Slices[I]=y[I];}
              ZdcSignalSinc zdcSignalSinc(NSlice);
 
              zdcSignalSinc.process(Slices,gain,pedestal,CFD_frac,corr);
 
 
              m_bwl_vpeak2[i] = zdcSignalSinc.getAmp() ;
              m_bwl_tpeak2[i] = zdcSignalSinc.getTime() ;
 
              error   = zdcSignalSinc.getError();
              warning = zdcSignalSinc.getWarning();
 
              msg(MSG::DEBUG) << "--> ZDC : ZdcRecChannelTool::getTimingSinc2: "
                      << error << ";" << warning << endmsg;
 
            }
          else {
              m_bwl_vpeak2[i] = -999 ;
              m_bwl_tpeak2[i] = -999 ;
          }
          i++;
      }
      return 0;
 
}