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NEST.cpp
2046 lines (1841 loc) · 83.8 KB
/
NEST.cpp
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#include <exception>
#include "NEST.hh"
#include <stdexcept>
#define InfraredER 1.35
#define InfraredNR 7.00
#define ChargeLoss 0.20
using namespace std;
using namespace NEST;
const std::vector<double> NESTcalc::default_NuisParam = {11.,1.1,0.0480,-0.0533,12.6,0.3,2.,0.3,2.,0.5,1.,1.};
const std::vector<double> NESTcalc::default_FreeParam = {1.,1.,0.1,0.5,0.19,2.25};
long NESTcalc::BinomFluct(long N0, double prob) {
double mean = N0 * prob;
double sigma = sqrt(N0 * prob * (1. - prob));
int N1 = 0;
if (prob <= 0.00) return N1;
if (prob >= 1.00) return N0;
if ( N0 < 5 || fabs(1.-2.*prob)/sqrt(N0*prob*(1.-prob)) > (1./3.) ) {
//https://en.wikipedia.org/wiki/Binomial_distribution#Normal_approximation
for (int i = 0; i < N0; ++i) {
if (RandomGen::rndm()->rand_uniform() < prob) ++N1;
}
} else {
N1 = int(floor(RandomGen::rndm()->rand_gauss(mean, sigma) + 0.5));
}
if (N1 > N0) N1 = N0;
if (N1 < 0) N1 = 0;
return N1;
}
NESTresult NESTcalc::FullCalculation(INTERACTION_TYPE species, double energy,
double density, double dfield, double A,
double Z,
const vector<double>& NuisParam /*={11.,1.1,0.0480,-0.0533,12.6,0.3,2.,0.3,2.,0.5,1.,1.}*/,
const vector<double>& FreeParam /*={1.,1.,0.1,0.5,0.19,2.25}*/,
bool do_times /*=true*/) {
if ( density < 1. ) fdetector->set_inGas(true);
NESTresult result;
result.yields = GetYields(species, energy, density, dfield, A, Z, NuisParam);
result.quanta = GetQuanta(result.yields, density, FreeParam);
if (do_times)
result.photon_times = GetPhotonTimes(
species, result.quanta.photons, result.quanta.excitons, dfield, energy);
else
result.photon_times = photonstream(result.quanta.photons, 0.0);
return result;
}
double NESTcalc::PhotonTime(INTERACTION_TYPE species, bool exciton,
double dfield, double energy) {
double time_ns = 0., SingTripRatio, tauR = 0., tau3 = 23.97,
tau1 = 3.27; //arXiv:1802.06162. NR may need tauR ~0.5-1ns instead of 0
if (fdetector->get_inGas() ||
energy < W_DEFAULT * 0.001) { // from G4S1Light.cc in old NEST
tau1 = 5.18; // uncertainty of 1.55 ns from G4S2Light
tau3 = 100.1; // uncertainty of 7.90 ns from G4S2Light
}
// tau1 = 3.5*ns; tau3 = 20.*ns; tauR = 40.*ns for solid Xe from old NEST.
// Here assuming same as in liquid
// if ( dfield > 60. ) dfield = 60. // makes Xed work. 200 for LUX Run04 instead. A mystery! Why no field dep?
double LET = CalcElectronLET ( energy, ATOM_NUM );
if ( ATOM_NUM == 18. ) { //copied from 2013 NEST version for LAr on LBNE
tau1 = RandomGen::rndm()->rand_gauss(6.5,0.8); // error from weighted average
tau3 = RandomGen::rndm()->rand_gauss(1300,50); // ibid.
tauR = RandomGen::rndm()->rand_gauss(0.8,0.2); // Kubota 1979
if ( species <= Cf ) SingTripRatio = 0.22218 * pow ( energy, 0.48211 );
else if ( species == ion ) //really only alphas here
SingTripRatio = (-0.065492+1.9996*exp(-energy/1e3))/(1.+0.082154/pow(energy/1e3,2.))+2.1811; //uses energy in MeV not keV
else {
SingTripRatio = 0.2701+0.003379*LET-4.7338e-5*pow(LET,2.)+8.1449e-6*pow(LET,3.);
if (LET < 3. && !exciton) SingTripRatio=RandomGen::rndm()->rand_gauss(0.5,0.2);
if (LET < 3. && exciton) SingTripRatio=RandomGen::rndm()->rand_gauss(0.36,0.06);
} //lastly is ER for LAr
}
else {
if ( species <= Cf ) // NR
SingTripRatio = (0.21-0.0001*dfield) * pow(energy, 0.21-0.0001*dfield); //arXiv:1803.07935. LUX:0.15*E^0.15
else if ( species == ion ) // e.g., alphas
SingTripRatio = 0.065 * pow ( energy, 0.416 ); // spans 2.3 (alpha) and 7.8 (Cf in Xe) from NEST v1
else { // ER
if ( !exciton ) {
if ( energy > 1e3 ) energy = 1e3; // MIP above ~1 MeV. Fix thanks to Austin de St. Croix
tauR = exp(-0.00900 * dfield) * (7.3138 + 3.8431 * log10(energy)); // arXiv:1310.1117
if ( tauR < 3.5 ) tauR = 3.5; //used to be for gammas only but helpful for matching beta data better
if ( dfield > 8e2 ) dfield = 8e2; //to match Kubota's 4,000 V/cm
SingTripRatio = 1.00 * pow(energy, -0.45+0.0005*dfield); // see comment below; also, dfield may need to be fixed at ~100-200 V/cm (for NR too)
}
else
SingTripRatio = 0.20 * pow(energy, -0.45+0.0005*dfield); // mixing arXiv:1807.07121 with Kubota 1979
}
}
if (fdetector->get_inGas() || energy < W_DEFAULT * 0.001) {
SingTripRatio = 0.1;
tauR = 0.;
if ( ATOM_NUM == 18. ) { tau3 = 1600.; tau1 = 6.; } // from old G4S2Light
} if ( tauR < 0. ) tauR = 0.; //in case varied with Gaussian earlier
// the recombination time is non-exponential, but approximates
// to exp at long timescales (see Kubota '79)
time_ns += tauR * (1.0 / RandomGen::rndm()->rand_uniform() - 1.);
if (RandomGen::rndm()->rand_uniform() < SingTripRatio / (1. + SingTripRatio))
time_ns -= tau1 * log(RandomGen::rndm()->rand_uniform());
else
time_ns -= tau3 * log(RandomGen::rndm()->rand_uniform());
return time_ns;
}
// in analytical model, an empirical distribution (Brian Lenardo and Dev A.K.)
photonstream NESTcalc::AddPhotonTransportTime(const photonstream& emitted_times,
double x, double y, double z) {
photonstream return_photons;
for (auto t : emitted_times) {
double newtime = t + fdetector->OptTrans(x, y, z);
return_photons.push_back(newtime);
}
return return_photons;
}
photonstream NESTcalc::GetPhotonTimes(INTERACTION_TYPE species,
int total_photons, int excitons,
double dfield, double energy) {
photonstream return_photons;
int total, excit;
for (int ip = 0; ip < total_photons; ++ip) {
bool isExciton = false;
if (ip < excitons) isExciton = true;
return_photons.push_back(PhotonTime(species, isExciton, dfield, energy));
}
return return_photons;
}
double NESTcalc::RecombOmegaNR(double elecFrac,const vector<double>& FreeParam/*={1.,1.,0.1,0.5,0.19,2.25}*/)
{
double omega = FreeParam[2]*exp(-0.5*pow(elecFrac-FreeParam[3],2.)/(FreeParam[4]*FreeParam[4]));
if ( omega < 0. )
omega = 0;
return omega;
}
double NESTcalc::RecombOmegaER(double efield, double elecFrac)
{
double ampl = 0.14+(0.043-0.14)/(1.+pow(efield/1210.,1.25));
if ( ampl < 0. )
ampl = 0.;
double wide = 0.205;
double cntr = 0.5; //0.41 agrees better with Dahl thesis. Odd! Reduces fluctuations for high e-Frac (high EF,low E)
//for gamma-rays larger than 100 keV at least in XENON10 use 0.43 as the best fit. 0.62-0.37 for LUX Run03
double skew = -0.2;
//double mode = cntr + sqrt(2./M_PI)*skew*wide/sqrt(1.+skew*skew);
double norm = 0.988;//1./(exp(-0.5*pow(mode-cntr,2.)/(wide*wide))*(1.+erf(skew*(mode-cntr)/(wide*sqrt(2.))))); //makes sure omega never exceeds ampl
double omega = norm*ampl*exp(-0.5*pow(elecFrac-cntr,2.)/(wide*wide))*(1.+erf(skew*(elecFrac-cntr)/(wide*sqrt(2.))));
if ( omega < 0. )
omega = 0;
return omega;
}
double NESTcalc::FanoER(double density, double Nq_mean,double efield)
{
if ( ATOM_NUM == 18. ) // liquid argon
return 0.1115; // T&I. conflicting reports of .107 (Doke) & ~0.1 elsewhere
double Fano = 0.12707 - 0.029623 * density - // Fano factor is << 1
0.0057042 *
pow(density,
2.) + //~0.1 for GXe w/ formula from Bolotnikov et al. 1995
0.0015957 *
pow(density,
3.); // to get it to be ~0.03 for LXe (E Dahl Ph.D. thesis)
if (!fdetector->get_inGas())
Fano += 0.0015 * sqrt(Nq_mean) * pow(efield, 0.5);
return Fano;
}
QuantaResult NESTcalc::GetQuanta(const YieldResult& yields, double density,
const vector<double>& FreeParam/*={1.,1.,0.1,0.5,0.19,2.25}*/) {
QuantaResult result{};
bool HighE;
int Nq_actual, Ne, Nph, Ni, Nex;
if ( FreeParam.size() < 6 ) {
throw std::runtime_error("ERROR: You need a minimum of 6 free parameters for the resolution model.");
}
double excitonRatio = yields.ExcitonRatio;
double Nq_mean = yields.PhotonYield + yields.ElectronYield;
double elecFrac = yields.ElectronYield / Nq_mean;
if (elecFrac > 1.) elecFrac = 1.;
if (elecFrac < 0.) elecFrac = 0.;
if (excitonRatio < 0.) {
excitonRatio = 0.;
HighE = true;
} else{
HighE = false;
}
double alf = 1. / (1. + excitonRatio);
double recombProb = 1. - (excitonRatio + 1.) * elecFrac;
if (recombProb < 0.){
excitonRatio = 1. / elecFrac - 1.;
}
if (yields.Lindhard == 1.) {
double Fano = FanoER(density,Nq_mean,yields.ElectricField);
Nq_actual = int(floor(
RandomGen::rndm()->rand_gauss(Nq_mean, sqrt(Fano * Nq_mean)) + 0.5));
if (Nq_actual < 0 || Nq_mean == 0.) Nq_actual = 0;
Ni = BinomFluct(Nq_actual, alf);
Nex = Nq_actual - Ni;
}
else {
double Fano = FreeParam[0];
Ni = int(floor(RandomGen::rndm()->rand_gauss(Nq_mean * alf,
sqrt(Fano * Nq_mean * alf)) +
0.5));
if (Ni < 0) Ni = 0;
Fano = FreeParam[1];
Nex = int(
floor(RandomGen::rndm()->rand_gauss(
Nq_mean * excitonRatio * alf, sqrt(Fano * Nq_mean * excitonRatio * alf)) +
0.5));
if (Nex < 0) Nex = 0;
Nq_actual = Nex + Ni;
}
if (Nq_actual == 0) {
result.ions = 0;
result.excitons = 0;
result.photons = 0;
result.electrons = 0;
result.Variance=0;
result.recombProb=0;
return result;
}
if (Nex < 0) Nex = 0;
if (Ni < 0) Ni = 0;
if (Nex > Nq_actual) Nex = Nq_actual;
if (Ni > Nq_actual) Ni = Nq_actual;
result.ions = Ni;
result.excitons = Nex;
if (Nex <= 0 && HighE)
recombProb = yields.PhotonYield / double(Ni);
if (recombProb < 0.) recombProb = 0.;
if (recombProb > 1.) recombProb = 1.;
if (std::isnan(recombProb) || std::isnan(elecFrac) || Ni == 0 ||
recombProb == 0.0) {
if ( fdetector->get_extraPhot() )
{
if ( yields.Lindhard != 1. )
Nph = int(floor(double(Nph)*InfraredNR + 0.5)); //IR photons for NR
else
Nph = int(floor(double(Nph)*InfraredER + 0.5)); //EXO
}
result.photons = Nex;
result.electrons =Ni;
elecFrac= 1.0;
result.recombProb=0.;
result.Variance = 0.;
return result;
}
//set omega (non-binomial recombination fluctuations parameter) according to whether the Lindhard <1, i.e. this is NR.
double omega = yields.Lindhard <1 ? RecombOmegaNR(elecFrac, FreeParam) : RecombOmegaER(yields.ElectricField, elecFrac);
if ( ATOM_NUM == 18. ) omega = 0.0; // Ar has no non-binom sauce
double Variance =
recombProb * (1. - recombProb) * Ni + omega * omega * Ni * Ni;
double skewness;
if ( (yields.PhotonYield+yields.ElectronYield) > 1e4 || yields.ElectricField > 4e3 || yields.ElectricField < 50. ) {
skewness = 0.00; //make it a constant 0 when outside the range of Vetri Velan's Run04 models.
}
else { // LUX Skewness Model
Wvalue wvalue = WorkFunction(density,fdetector->get_molarMass());
double Wq_eV = wvalue.Wq_eV;
double engy = 1e-3 * Wq_eV * (yields.PhotonYield + yields.ElectronYield);
double fld = yields.ElectricField;
double alpha0 = 1.39;
double cc0 = 4.0, cc1 = 22.1;
double E0 = 7.7, E1 = 54., E2 = 26.7, E3 = 6.4;
double F0 = 225., F1 = 71.;
skewness = 0.;
if (yields.Lindhard == 1.) {
skewness = 1. / (1. + exp((engy - E2) / E3)) * (alpha0 + cc0 * exp(-1. * fld / F0) * (1. - exp(-1. * engy / E0))) +
1. / (1. + exp(-1. * (engy - E2) / E3)) * cc1 * exp(-1. * engy / E1) * exp(-1. * sqrt(fld) / sqrt(F1));
//if ( fabs(skewness) <= DBL_MIN ) skewness = DBL_MIN;
}
else {
skewness = FreeParam[5]; //2.25 but ~5-20 also good (for NR). All better than zero, but 0 is OK too
} //note to self: find way to make 0 for ion (wall BG) incl. alphas?
}
double widthCorrection = sqrt( 1. - (2./M_PI) * skewness*skewness/(1. + skewness*skewness));
double muCorrection = (sqrt(Variance)/widthCorrection)*(skewness/sqrt(1.+skewness*skewness))*sqrt(2./M_PI);
if ( fabs(skewness) > DBL_MIN && ATOM_NUM == 54. ) //skewness model only for Xenon!
Ne = int(floor(RandomGen::rndm()->rand_skewGauss((1.-recombProb)*Ni-muCorrection,sqrt(Variance)/widthCorrection,skewness)+0.5));
else
Ne = int(floor(RandomGen::rndm()->rand_gauss((1.-recombProb)*Ni,sqrt(Variance))+0.5));
if (Ne < 0) Ne = 0;
if (Ne > Ni) Ne = Ni;
Nph = Nq_actual - Ne;
if (Nph > Nq_actual) Nph = Nq_actual;
if (Nph < Nex) Nph = Nex;
if ((Nph + Ne) != (Nex + Ni)) {
throw std::runtime_error("ERROR: Quanta not conserved. Tell Matthew Immediately!");
}
if ( fdetector->get_extraPhot() ) {
if ( yields.Lindhard != 1. )
Nph = int(floor(double(Nph)*InfraredNR+0.5)); //IR photons for NR
else
Nph = int(floor(double(Nph)*InfraredER+0.5)); //EXO
}
result.Variance=Variance;
result.recombProb=recombProb;
result.photons = Nph;
result.electrons = Ne;
return result; // quanta returned with recomb fluctuations
}
YieldResult NESTcalc::GetYieldGamma(double energy, double density, double dfield)
{
Wvalue wvalue = WorkFunction(density,fdetector->get_molarMass());
double Wq_eV = wvalue.Wq_eV;
double alpha = wvalue.alpha;
constexpr double m3 = 2., m4 = 2., m6 = 0.;
const double m1 =
33.951 + (3.3284 - 33.951) / (1. + pow(dfield / 165.34, .72665));
double m2 = 1000 / Wq_eV;
double m5 =
23.156 + (10.737 - 23.156) / (1. + pow(dfield / 34.195, .87459));
double densCorr = 240720. / pow(density, 8.2076);
double m7 =
66.825 + (829.25 - 66.825) / (1. + pow(dfield / densCorr, .83344));
double Nq = energy * 1000. / Wq_eV;
double m8 = 2.;
if (fdetector->get_inGas()) m8 = -2.;
double Qy = m1 + (m2 - m1) / (1. + pow(energy / m3, m4)) + m5 +
(m6 - m5) / (1. + pow(energy / m7, m8));
double Ly = Nq / energy - Qy;
YieldResult result{};
result.PhotonYield = Ly * energy;
result.ElectronYield = Qy * energy;
result.ExcitonRatio = NexONi(energy,density);
result.Lindhard = 1;
result.ElectricField = dfield;
result.DeltaT_Scint = -999;
return YieldResultValidity(result,energy,Wq_eV);
}
YieldResult NESTcalc::GetYieldNROld ( double energy, int option ) { // possible anti-correlation in NR ignored totally
double Ne, Nph, FakeField;
if ( option == 0 ) { // with old-school L_eff*S_nr conversion, and more explicit Thomas-Imel box model formulae but approximation where Qy can sail off as energy to 0
FakeField = 1.00;
Nph = 0.95*64.*energy * (0.050295*pow(energy,1.3483)*(log(1.+(0.84074*pow(energy,1.3875)))/(0.84074*pow(energy,1.3875)))); // NESTv0.97beta (2011) ~0 V/cm arXiv:1106.1613
Ne = energy * (10.661*pow(energy,0.16199)*(log(1.+(0.745330*pow(energy,1.0880)))/(0.745330*pow(energy,1.0880)))+0.93739); // essentially Lindhard with k of 0.166
}
else if ( option == 1 ) {
FakeField = 200.;
Ne = energy * (4.1395*pow(energy,0.13816)*(log(1.+(0.040945*pow(energy,1.1388)))/(0.040945*pow(energy,1.1388)))); // conservative: k < or ~ to 0.110 (Hitachi-like)
Nph = energy * 3.35 * pow(energy,0.29222); // NESTv0.98 (2013) model for legacy comparisons (arXiv:1307.6601) using simple power law (optional constant; optional for Nph)
}
else if ( option == 2 ) {
FakeField = 730.;
Nph = 7582.3+(-1.3728-7582.3)/(1.+pow(energy/385.46,1.2669)); // NEST v1.0 (2015) arXiv:1412.4417, with ability to cut off yield at either low or high energy. Fit to Nph
Ne = (60.914*pow(energy,0.32220))*(1.-exp(-0.12684*pow(energy,0.65729))); // middle of road: k = 0.14. By Brian Lenardo, still pre-LUX-DD. With explicit bi-Exc quenching
}
else { // simplest by far, but not 1st principles: based on work of M. Wyman UAlbany
FakeField = 180.; // fit to LUX Run03 D-D alone
Ne = ( -3.8780 + 12.372 * pow ( energy, 0.73502 ) ) * exp ( -0.0034329 * energy ); // slide 68 of Matthew's private Google Slides mega-deck
Nph = 0.81704 + 3.8584 * pow ( energy, 1.30180 ); // ditto
}
YieldResult result{}; if(Nph<0.)Nph=0.; if(Ne<0.)Ne=0.;
result.PhotonYield = Nph; result.ElectronYield = Ne;
result.ExcitonRatio = 1.;
result.Lindhard = ( ( Nph + Ne ) / energy ) * W_DEFAULT * 1e-3;
result.ElectricField = FakeField;
result.DeltaT_Scint = -999.;
return YieldResultValidity ( result, energy, W_DEFAULT );
}
YieldResult NESTcalc::GetYieldNR(double energy, double density, double dfield, double massNum,
vector<double> NuisParam/*{11.,1.1,0.0480,-0.0533,12.6,0.3,2.,0.3,2.,0.5,1.,1.}*/)
{
if ( ATOM_NUM == 18. ) { // liquid Ar
NuisParam[0] = 12.56; // +/-1.10 Everything from https://docs.google.com/document/d/1vLg8vvY5bcdl4Ah4fzyE182DGWt0Wr7_FJ12_B10ujU
NuisParam[1] = 1.101; // +/-0.025
NuisParam[2] = 0.1; // +/-0.005
NuisParam[3] = -0.0932; // +/-0.0095
NuisParam[4] = 2.998; // +/-1.026
NuisParam[5] = 0.3; // Fixed
NuisParam[6] = 2.94; // +/-0.12
NuisParam[7] = W_DEFAULT / 1000.;
NuisParam[8] = DBL_MAX;
NuisParam[9] = 0.5; // square root
NuisParam[10] = 1.0;
NuisParam[11] = 1.0;
massNum = fdetector->get_molarMass();
}
if ( NuisParam.size() < 12 )
{
throw std::runtime_error("ERROR: You need a minimum of 12 nuisance parameters for the mean yields.");
}
if ( energy > 330. )
cerr << "\nWARNING: No data out here, you are beyond the AmBe endpoint of about 300 keV.\n";
int massNumber;
double ScaleFactor[2] ={1., 1.};
if ( massNum == 0. )
massNumber = RandomGen::rndm()->SelectRanXeAtom();
else
massNumber = int(massNum);
ScaleFactor[0] = sqrt(fdetector->get_molarMass() / (double) massNumber);
ScaleFactor[1] = ScaleFactor[0];
double Nq = NuisParam[0] * pow(energy, NuisParam[1]);
double ThomasImel =
NuisParam[2] * pow(dfield, NuisParam[3]) * pow(density / DENSITY, 0.3);
double Qy = 1. / (ThomasImel * pow(energy + NuisParam[4], NuisParam[9]));
Qy *= 1. - 1. / pow(1. + pow((energy / NuisParam[5]), NuisParam[6]), NuisParam[10]);
double Ly = Nq / energy - Qy;
if (Qy < 0.0) Qy = 0.0;
if (Ly < 0.0) Ly = 0.0;
double Ne = Qy * energy * ScaleFactor[1];
double Nph = Ly * energy * ScaleFactor[0] *
(1. - 1. / pow(1. + pow((energy / NuisParam[7]), NuisParam[8]), NuisParam[11]));
Nq = Nph + Ne;
double Ni = (4. / ThomasImel) * (exp(Ne * ThomasImel / 4.) - 1.);
double Nex = (-1. / ThomasImel) * (4. * exp(Ne * ThomasImel / 4.) -
(Ne + Nph) * ThomasImel - 4.);
if ( Nex <= 0. ) cerr << "\nCAUTION: You are approaching the border of NEST's validity for high-energy (OR, for LOW) NR, or are beyond it, at " << energy << " keV." << endl;
if ( fabs(Nex + Ni -Nq) > 2. * PHE_MIN )
{
throw std::runtime_error("ERROR: Quanta not conserved. Tell Matthew Immediately!");
}
double NexONi = Nex / Ni;
Wvalue wvalue = WorkFunction(density,fdetector->get_molarMass());
double Wq_eV = wvalue.Wq_eV;
double L = (Nq / energy) * Wq_eV * 1e-3;
YieldResult result{};
result.PhotonYield = Nph;
result.ElectronYield = Ne;
result.ExcitonRatio = NexONi;
result.Lindhard = L;
result.ElectricField = dfield;
result.DeltaT_Scint = -999;
return YieldResultValidity(result,energy,Wq_eV); // everything needed to calculate fluctuations
}
YieldResult NESTcalc::GetYieldIon(double energy, double density, double dfield, double massNum, double atomNum,
const vector<double>& NuisParam/*{11.,1.1,0.0480,-0.0533,12.6,0.3,2.,0.3,2.,0.5,1.,1.}*/)
{ //simply uses the original Lindhard model, but as cited by Hitachi in:
//https://indico.cern.ch/event/573069/sessions/230063/attachments/1439101/2214448/Hitachi_XeSAT2017_DM.pdf
double A1 = massNum, A2 = RandomGen::rndm()->SelectRanXeAtom();
double Z1 = atomNum, Z2 = ATOM_NUM;
double Z_mean = pow(pow(Z1, (2. / 3.)) + pow(Z2, (2. / 3.)), 1.5);
double E1c = pow(A1, 3.) * pow(A1 + A2, -2.) * pow(Z_mean, (4. / 3.)) *
pow(Z1, (-1. / 3.)) * 500.;
double E2c = pow(A1 + A2, 2.) * pow(A1, -1.) * Z2 * 125.;
double gamma = 4. * A1 * A2 / pow(A1 + A2, 2.);
double Ec_eV = gamma * E2c;
double Constant =
(2. / 3.) * (1. / sqrt(E1c) + 0.5 * sqrt(gamma / Ec_eV));
double L = Constant * sqrt(energy * 1e3);
double L_max = 0.96446 / (1. + pow(massNum * massNum / 19227., 0.99199));
if (atomNum == 2. && massNum == 4.) L = 0.56136 * pow(energy, 0.056972);
if (L > L_max) L = L_max;
double densDep = pow(density / 0.2679, -2.3245);
double massDep =
0.02966094 * exp(0.17687876 * (massNum / 4. - 1.)) + 1. - 0.02966094;
double fieldDep = pow(1. + pow(dfield / 95., 8.7), 0.0592);
if (fdetector->get_inGas()) fieldDep = sqrt(dfield);
double ThomasImel = 0.00625 * massDep / (1. + densDep) / fieldDep;
if ( A1 == 206. && Z1 == 82. ) { //Pb-206 (from Po-210 alpha decay).
ThomasImel = 79.9 * pow ( dfield, -0.868 ); //Nishat Parveen
}
const double logden = log10(density);
double Wq_eV = 28.259 + 25.667 * logden - 33.611 * pow(logden, 2.) -
123.73 * pow(logden, 3.) - 136.47 * pow(logden, 4.) -
74.194 * pow(logden, 5.) - 20.276 * pow(logden, 6.) -
2.2352 * pow(logden, 7.);
double alpha = 0.64 / pow(1. + pow(density / 10., 2.), 449.61);
double NexONi = alpha + 0.00178 * pow(atomNum, 1.587); //Wq_eV=13.7;ThomasImel=0.05;NexONi=0.05;
double Nq = 1e3 * L * energy / Wq_eV;
double Ni = Nq / (1. + NexONi);
double recombProb;
if (Ni > 0. && ThomasImel > 0.)
recombProb =
1. - log(1. + (ThomasImel / 4.) * Ni) / ((ThomasImel / 4.) * Ni);
else
recombProb = 0.0;
double Nph = Nq * NexONi / (1. + NexONi) + recombProb * Ni;
double Ne = Nq - Nph;
if ( A1 == 206. && Z1 == 82. )
Ne = RandomGen::rndm()->rand_gauss(Ne/ChargeLoss,2.*sqrt(Ne/(ChargeLoss*ChargeLoss))); // to compensate for accidentally including Q-loss in fits to Xed data
if ( Z2 == 18. && Z1 == 2. && A1 == 4. ) { //alphas in argon
double factorE = pow((4.71598+pow(dfield,7.72848)),0.109802);
double Qy = (1./6200.) *
(64478398.7663-(64478398.7663*0.173553719+(64478398.7663/1.21)*(1.-(0.02852*log(1.+(64478398.7663/1.21)*((0.01/factorE)/3.)))/((64478398.7663/1.21)*(0.01/factorE)))));
double qu = 1. / ( 1.5 * pow ( dfield, -0.012 ) );
factorE = pow(4.98483+pow(dfield/10.0822,1.2076),0.97977);
double Ly = qu*(1./6500.)*
(278037.250283*0.173553719+(278037.250283/1.21)*(1.-(2.*log(1.+(278037.250283/1.21)*((0.653503/factorE)/3.)))/((278037.250283/1.21)*(0.653503/factorE))));
Ne = Qy * energy;
Nph = Ly * energy;
L = 0.0; NexONi = 0.21; Wq_eV = 19.5;
}
YieldResult result{};
result.PhotonYield = Nph;
result.ElectronYield = Ne;
result.ExcitonRatio = NexONi;
result.Lindhard = L;
result.ElectricField = dfield;
result.DeltaT_Scint = -999;
return YieldResultValidity(result,energy,Wq_eV); // everything needed to calculate fluctuations
}
YieldResult NESTcalc::GetYieldKr83m(double energy, double density, double dfield, double maxTimeSeparation, double deltaT_ns=-999)
{
double Nq = -999;
double Nph = -999;
double Ne = -999;
Wvalue wvalue = WorkFunction(density,fdetector->get_molarMass());
double Wq_eV = wvalue.Wq_eV;
double alpha = wvalue.alpha;
constexpr double deltaT_ns_halflife = 154.4;
if (energy == 9.4)
{
if (deltaT_ns < 0) {
while (deltaT_ns > maxTimeSeparation || deltaT_ns < 0) {
deltaT_ns = RandomGen::rndm()->rand_exponential(deltaT_ns_halflife);
}
}
Nq = energy * 1e3 / Wq_eV;
double medTlevel = 57.462 + (69.201 - 57.462 ) / pow(1. + pow(dfield / 250.13, 0.9), 1.);
double lowTdrop = 35. + (75. - 35.) / pow(1. + pow(dfield/60, 1), 1);
double lowTpeak = 6.2831e4 - (6.2831e4 - 5.949e4 ) / pow(1. + pow(dfield/60, 1.), 1);
Nph = energy * (lowTpeak * pow(2. * deltaT_ns + 10., -1.5) + medTlevel) / (1. + pow(deltaT_ns / lowTdrop, -1.*lowTdrop/5.));
Ne = Nq - Nph;
if (Ne < 0)
Ne = 0.;
alpha = 0.;
} else
{
if ( energy == 32.1 ) {
Nq = energy * 1e3 / Wq_eV;
Nph = energy * (6. + (66.742 - 6.) / pow(1. + pow(dfield / 115.037, 0.6409),0.3215));
Ne = Nq - Nph;
if (Ne < 0.)
Ne = 0.;
} else { //merged 41.5 keV decay
if (deltaT_ns < 0) {
while (deltaT_ns > maxTimeSeparation || deltaT_ns < 0) {
deltaT_ns = RandomGen::rndm()->rand_exponential(deltaT_ns_halflife);
}
}
double medTlevel = 57.462 + (69.201 - 57.462 ) / pow(1. + pow(dfield / 250.13, 0.9), 1.);
double lowTdrop = 35. + (75. - 35.) / pow(1. + pow(dfield/60, 1), 1);
double lowTpeak = 6.2831e4 - (6.2831e4 - 5.949e4 ) / pow(1. + pow(dfield/60, 1.), 1);
//9.4 keV model
Nph = 9.4 * (lowTpeak * pow(2. * deltaT_ns + 10., -1.5) + medTlevel) / (1. + pow(deltaT_ns / lowTdrop, -1.*lowTdrop/5.));
Ne = ( 9.4 * 1e3 / Wq_eV) - Nph;
if ( Ne < 0. ) Ne = 0.; //can't have negative charge from either decay
//Add in 32.1 keV yields
double Nph_32 = 32.1 * (6. + (66.742 - 6.) / pow(1. + pow(dfield / 115.037, 0.6409),0.3215));
double Ne_32 = ( 32.1 * 1e3 / Wq_eV ) - Nph_32;
Nph += Nph_32;
Ne += Ne_32;
if ( Ne < 0. ) Ne = 0.;
}
}
YieldResult result{};
result.PhotonYield = Nph;
result.ElectronYield = Ne;
result.ExcitonRatio = NexONi(energy,density);
result.Lindhard = 1;
result.ElectricField = dfield;
result.DeltaT_Scint = deltaT_ns;
return YieldResultValidity(result,energy,Wq_eV); // everything needed to calculate fluctuations
}
YieldResult NESTcalc::GetYieldBeta(double energy, double density, double dfield)
{
Wvalue wvalue = WorkFunction(density,fdetector->get_molarMass());
double Qy, Nq;
double Wq_eV = wvalue.Wq_eV;
//double alpha = wvalue.alpha; // duplicate definition below. We don't even need this here (it is Nex/Ni)
if ( ATOM_NUM == 18. ) { // Liquid Argon
double alpha = 32.988 - 552.988/(15.5578+pow(dfield/(-4.7+0.025115*exp(1.3954/0.265360653)), 0.208889));
double beta = 2.01952 + 20.9/pow(1.105 + pow(dfield/0.4, 4.55), 7.502);
double gamma = 0.642039*(1000/19.5 +6.5*(5 - 0.5/pow(dfield/1047.408, 0.01851)));
double delta =10.3842;
double DB = 1052.264+(14159350000 - 1652.264)/(-5+pow(dfield/0.328038, 1.74654));
double p1 = 1;
double p2 = 10.304;
double p3 = 24.3509;
double p4 = 0.10535;
double p5 = 0.7;
double LET = -2.11259;
Nq = energy * 1e3 / Wq_eV;
Qy = alpha*beta + (gamma - alpha*beta)/pow(p1+p2*pow(energy+0.5, p3), p4) + delta/(p5+DB*pow(energy, LET));
}
else {
double QyLvllowE = 1e3 / Wq_eV + 6.5 * (1. - 1. / (1. + pow(dfield / 47.408, 1.9851)));
double HiFieldQy = 1. + 0.4607 / pow(1. + pow(dfield / 621.74, -2.2717), 53.502);
double QyLvlmedE = 32.988 - 32.988 / (1. + pow(dfield / (0.026715 * exp(density / 0.33926)), 0.6705));
QyLvlmedE *= HiFieldQy;
double DokeBirks = 1652.264 + (1.415935e10 - 1652.264) / (1. + pow(dfield / 0.02673144, 1.564691));
Nq = energy * 1e3 / Wq_eV; //( Wq_eV+(12.578-Wq_eV)/(1.+pow(energy/1.6,3.5)) );
double LET_power = -2.;
if (fdetector->get_inGas()) LET_power = 2.;
double QyLvlhighE = 28.;
if (density > 3.100) QyLvlhighE = 49.; //SXe effect from Yoo.
Qy = QyLvlmedE + (QyLvllowE - QyLvlmedE) / pow(1. + 1.304 * pow(energy, 2.1393), 0.35535) + QyLvlhighE / (1. + DokeBirks * pow(energy, LET_power));
if (Qy > QyLvllowE && energy > 1. && dfield > 1e4) Qy = QyLvllowE;
}
double Ly = Nq / energy - Qy;
double Ne = Qy * energy;
double Nph = Ly * energy;
YieldResult result{};
result.PhotonYield = Nph;
result.ElectronYield = Ne;
result.ExcitonRatio = NexONi(energy,density);
result.Lindhard = 1;
result.ElectricField = dfield;
result.DeltaT_Scint = -999;
return YieldResultValidity(result,energy,Wq_eV); // everything needed to calculate fluctuations;
}
YieldResult NESTcalc::GetYieldBetaGR ( double energy, double density, double dfield ) {
Wvalue wvalue = WorkFunction(density,fdetector->get_molarMass());
double Wq_eV = wvalue.Wq_eV;
double alpha = wvalue.alpha;
double Nq = energy * 1e3 / Wq_eV;
double m1 = (14.10181492*log10(dfield) -13.1164354516);
if ( m1 > 30.66 ) { m1 = 30.66; }
double m5 = Nq/energy/(1 + alpha*erf(0.05 * energy))-m1;
double m10 = (0.0508273937+(0.1166087199-0.0508273937)/(1+pow(dfield/1.39260460e+02,-0.65763592)));
double Qy = m1 + (77.2931084-m1)/
pow((1.+pow(energy/(log10(dfield)*0.13946236+0.52561312),1.82217496+(2.82528809-1.82217496)/(1+pow(dfield/144.65029656,-2.80532006)))),0.3344049589)
+ m5 +(0.- m5)/pow((1.+pow(energy/(7.02921301+(98.27936794-7.02921301)/
(1.+pow(dfield/256.48156448,1.29119251))),4.285781736)), m10);
double coeff_TI = pow(1./DENSITY, 0.3);
double coeff_Ni = pow(1./DENSITY, 1.4);
double coeff_OL = pow(1./DENSITY, -1.7)/log(1.+coeff_TI*coeff_Ni*pow(DENSITY,1.7));
Qy *= coeff_OL*log(1.+coeff_TI*coeff_Ni*pow(density,1.7))*pow(density,-1.7);
double Ly = Nq / energy - Qy;
double Ne = Qy * energy;
double Nph = Ly * energy;
double lux_NexONi = alpha * erf(0.05 * energy);
YieldResult result{};
result.PhotonYield = Nph;
result.ElectronYield = Ne;
result.ExcitonRatio = lux_NexONi;
result.Lindhard = 1;
result.ElectricField = dfield;
result.DeltaT_Scint = -999;
return YieldResultValidity(result,energy,Wq_eV); // everything needed to calculate fluctuations;
}
YieldResult NESTcalc::GetYields(INTERACTION_TYPE species, double energy, double density, double dfield, double massNum,
double atomNum, const vector<double>& NuisParam
/*={11.,1.1,0.0480,-0.0533,12.6,0.3,2.,0.3,2.,0.5,1.,1.}*/) {
switch (species) {
case NR:
case WIMP:
case B8:
case atmNu:
case DD:
case AmBe:
case Cf: // this doesn't mean all NR is Cf, this is like a giant if
// statement. Same intrinsic yields, but different energy spectra
// (TestSpectra)
return GetYieldNR(energy, density, dfield, massNum,NuisParam);
//return GetYieldNROld ( energy, 1 );
break;
case ion:
return GetYieldIon(energy,density,dfield,massNum,atomNum,NuisParam);
break;
case gammaRay:
return GetYieldGamma(energy,density,dfield);
break;
case Kr83m:
return GetYieldKr83m(energy,density,dfield,massNum);
//not actually massNumber, but a place holder for maxTime
break;
default: // beta, CH3T, 14C, the pp solar neutrino background, and Grant B's new or full gamma
return GetYieldBeta(energy,density,dfield);
//return GetYieldBetaGR(energy,density,dfield);
break;
}
}
YieldResult NESTcalc::YieldResultValidity(YieldResult& res, const double energy, const double Wq_eV)
{
assert(res.ElectronYield != -999 && res.PhotonYield != -999 && res.ExcitonRatio != -999);
if (res.PhotonYield > energy / W_SCINT)
res.PhotonYield = energy / W_SCINT; // yields can never exceed 1 / [ W ~ few eV ]
if (res.ElectronYield > energy / W_SCINT) res.ElectronYield = energy / W_SCINT;
if (res.PhotonYield < 0.) res.PhotonYield = 0.;
if (res.ElectronYield < 0.) res.ElectronYield = 0.;
if (res.Lindhard < 0.) res.Lindhard = 0.;
if (res.Lindhard > 1.) res.Lindhard = 1.; // Lindhard Factor
if (energy < 0.001 * Wq_eV / res.Lindhard)
{
res.PhotonYield = 0.;
res.ElectronYield = 0.;
}
return res;
}
NESTcalc::NESTcalc(VDetector* detector) {
assert(detector);
fdetector = detector;
}
NESTcalc::~NESTcalc() {
if (pulseFile) pulseFile.close();
}
vector<double> NESTcalc::GetS1(const QuantaResult &quanta, double truthPosX, double truthPosY, double truthPosZ,
double smearPosX, double smearPosY, double smearPosZ, double driftVelocity,
double dV_mid, INTERACTION_TYPE type_num,
long evtNum, double dfield, double energy,
int useTiming, bool outputTiming,
vector<long int>& wf_time,
vector<double>& wf_amp) {
double truthPos[3] = { truthPosX, truthPosY, truthPosZ }; double smearPos[3] = { smearPosX, smearPosY, smearPosZ };
int Nph = quanta.photons; double subtract[2] = { 0., 0. };
wf_time.clear();
wf_amp.clear();
vector<double> photon_areas[2];
vector<double> scintillation(9); // return vector
vector<double> newSpike(2); // for re-doing spike counting more precisely
// Add some variability in g1 drawn from a polynomial spline fit
double posDep = fdetector->FitS1(truthPos[0], truthPos[1], truthPos[2], VDetector::fold);
double posDepSm = fdetector->FitS1(smearPos[0], smearPos[1], smearPos[2], VDetector::unfold);
double dt = (fdetector->get_TopDrift() - truthPos[2]) / driftVelocity;
double dz_center = fdetector->get_TopDrift() -
dV_mid * fdetector->get_dtCntr(); // go from t to z
posDep /=
fdetector->FitS1(0., 0., dz_center, VDetector::fold); // XYZ always in mm now never cm
posDepSm /= fdetector->FitS1(0., 0., dz_center, VDetector::unfold);
double g1_XYZ = fdetector->get_g1() * posDep;
if ( g1_XYZ > 1. ) g1_XYZ = 1.;
if ( g1_XYZ < 0. ) g1_XYZ = 0.;
if ( fdetector->get_g1() == 1. ) { g1_XYZ = 1.; posDep = 1.; posDepSm = 1.; }
if ( fdetector->get_g1() == 0. ) { g1_XYZ = 0.; posDep = 0.; posDepSm = 0.; }
// generate a number of PMT hits drawn from a binomial distribution.
// Initialize number of photo-electrons
int nHits = BinomFluct ( Nph, g1_XYZ ), Nphe = 0;
double eff = fdetector->get_sPEeff();
if ( eff < 1. )
eff += ((1.-eff)/(2.*double(fdetector->get_numPMTs())))*double(nHits);
if ( eff > 1. ) eff = 1.;
if ( eff < 0. ) eff = 0.;
// Initialize the pulse area and spike count variables
double pulseArea = 0., spike = 0., prob;
// If single photo-electron efficiency is under 1 and the threshold is above 0
// (some phe will be below threshold)
if ( useTiming != -1 ) { // digital nHits eventually becomes spikes (spike++) based upon threshold
// Step through the pmt hits
for (int i = 0; i < nHits; ++i) {
// generate photo electron, integer count and area
double phe1 = RandomGen::rndm()->rand_gauss(1., fdetector->get_sPEres()) +
RandomGen::rndm()->rand_gauss(fdetector->get_noiseB()[0],
fdetector->get_noiseB()[1]);
++Nphe;
if (phe1 > DBL_MAX) phe1 = 1.;
if (phe1 < -DBL_MAX) phe1 = 0.;
prob = RandomGen::rndm()->rand_uniform();
// zero the area if random draw determines it wouldn't have been observed.
if (prob > eff) {
phe1 = 0.;
} // add an else with Nphe++ if not doing mc truth
// Generate a double photo electron if random draw allows it
double phe2 = 0.;
if (RandomGen::rndm()->rand_uniform() < fdetector->get_P_dphe()) {
// generate area and increment the photo-electron counter
phe2 = RandomGen::rndm()->rand_gauss(1., fdetector->get_sPEres()) +
RandomGen::rndm()->rand_gauss(fdetector->get_noiseB()[0],
fdetector->get_noiseB()[1]);
++Nphe;
if (phe2 > DBL_MAX) phe2 = 1.;
if (phe2 < -DBL_MAX) phe2 = 0.;
// zero the area if phe wouldn't have been observed
if (RandomGen::rndm()->rand_uniform() > eff &&
prob > eff) {
phe2 = 0.;
} // add an else with Nphe++ if not doing mc truth
// The dphe occurs simultaneously to the first one from the same source
// photon. If the first one is seen, so should be the second one
}
// Save the phe area and increment the spike count (very perfect spike
// count) if area is above threshold
if ( useTiming >= 1 ) {
if ((phe1 + phe2) > fdetector->get_sPEthr()) {
pulseArea += phe1 + phe2;
++spike;
photon_areas[0].push_back(phe1);
photon_areas[1].push_back(phe2);
}
} else { // use approximation to find timing
if ((phe1 + phe2) > fdetector->get_sPEthr() &&
(-20. * log(RandomGen::rndm()->rand_uniform()) <
fdetector->get_coinWind() ||
nHits > fdetector->get_coinLevel())) {
++spike;
pulseArea += phe1 + phe2;
} else
;
}
}
} else { // apply just an empirical efficiency by itself, without direct area
// threshold
Nphe = nHits + BinomFluct(nHits, fdetector->get_P_dphe());
pulseArea = RandomGen::rndm()->rand_gauss(
BinomFluct(Nphe, 1. - (1. - eff) / (1. + fdetector->get_P_dphe())),
fdetector->get_sPEres() * sqrt(Nphe));
spike = (double)nHits;
}
if ( useTiming >= 1 ) {
vector<double> PEperBin, AreaTable[2], TimeTable[2];
int numPts = 1100 - 100 * SAMPLE_SIZE;
AreaTable[0].resize(numPts, 0.);
AreaTable[1].resize(numPts, 0.);
int total_photons = (int)fabs(spike);
int excitons =
int((double(nHits) / double(quanta.photons)) * double(quanta.excitons) +
0.5);
photonstream photon_emission_times =
GetPhotonTimes(type_num, total_photons, excitons, dfield, energy);
photonstream photon_times = AddPhotonTransportTime(
photon_emission_times, truthPos[0], truthPos[1], truthPos[2]);
if (outputTiming && !pulseFile.is_open()) {
pulseFile.open("photon_times.txt");
// pulseFile << "Event#\tt [ns]\tA [PE]" << endl;
pulseFile << "Event#\tt [ns]\tPEb/bin\tPEt/bin\tin win" << endl;
}
int ii, index;
double min = 1e100, pTime;
for (ii = 0; ii < (int)fabs(spike); ++ii) {
PEperBin.clear();
PEperBin = fdetector->SinglePEWaveForm(
photon_areas[0][ii] + photon_areas[1][ii], photon_times[ii]);
int total = (unsigned int)PEperBin.size() - 1;
int whichArray;
if (RandomGen::rndm()->rand_uniform() <
fdetector->FitTBA(truthPos[0], truthPos[1], truthPos[2])[0])
whichArray = 0;
else
whichArray = 1;
for (int kk = 0; kk < total; ++kk) {
pTime = PEperBin[0] + kk * SAMPLE_SIZE;
index = int(floor(pTime / SAMPLE_SIZE + 0.5)) + numPts / 2;
if (index < 0) index = 0;
if (index >= numPts) index = numPts - 1;
AreaTable[whichArray][index] +=
10. * (1. + PULSEHEIGHT) *
(photon_areas[0][ii] + photon_areas[1][ii]) /
(PULSE_WIDTH * sqrt(2. * M_PI)) *
exp(-pow(pTime - photon_times[ii], 2.) /
(2. * PULSE_WIDTH * PULSE_WIDTH));
}
if (total >= 0) {
if (PEperBin[0] < min) min = PEperBin[0];
TimeTable[0].push_back(PEperBin[0]);
}
// else
// TimeTable[0].push_back(-999.);
// TimeTable[1].push_back(photon_areas[0][ii]+photon_areas[1][ii]);
}
double tRandOffset = (SAMPLE_SIZE/2.)*(2.*RandomGen::rndm()->rand_uniform()-1.); //-16,20 was good for LUX, but made weird skew in fP
for (ii = 0; ii < numPts; ++ii) {
if ((AreaTable[0][ii] + AreaTable[1][ii]) <= PULSEHEIGHT) continue;
wf_time.push_back((ii - numPts / 2) * SAMPLE_SIZE);
wf_amp.push_back(AreaTable[0][ii] + AreaTable[1][ii]);
if (outputTiming) {
char line[80];
if ( AreaTable[0][ii] > PHE_MAX ) subtract[0] = AreaTable[0][ii] - PHE_MAX;
else subtract[0] = 0.0;
if ( AreaTable[1][ii] > PHE_MAX ) subtract[1] = AreaTable[1][ii] - PHE_MAX;
else subtract[1] = 0.0;
sprintf(line, "%lu\t%ld\t%.3f\t%.3f", evtNum, wf_time.back() + (long)tRandOffset,
AreaTable[0][ii]-subtract[0], AreaTable[1][ii]-subtract[1]);
pulseFile << line << flush;
}
if (((ii - numPts / 2) * SAMPLE_SIZE - (int)min) >
fdetector->get_coinWind() &&
nHits <= fdetector->get_coinLevel()) {
pulseArea -= (AreaTable[0][ii] + AreaTable[1][ii]);
pulseFile << "\t0" << endl;
} else
pulseFile << "\t1" << endl;
}
for (ii = 0; ii < TimeTable[0].size(); ++ii) {
if ((TimeTable[0][ii] - min) > fdetector->get_coinWind() &&
nHits <= fdetector->get_coinLevel())
--spike;
// char line[80]; sprintf ( line, "%lu\t%.1f\t%.2f", evtNum,
// TimeTable[0][ii]+24., TimeTable[1][ii] ); pulseFile << line << endl;
}
}
pulseArea = RandomGen::rndm()->rand_gauss(
pulseArea, fdetector->get_noiseL()[0] * pulseArea);
pulseArea -= ( subtract[0] + subtract[1] );
if (pulseArea < fdetector->get_sPEthr()) pulseArea = 0.;
if (spike < 0) spike = 0;
double pulseAreaC = pulseArea / posDepSm;
double Nphd = pulseArea / (1. + fdetector->get_P_dphe());
double NphdC = pulseAreaC / (1. + fdetector->get_P_dphe());
double spikeC = spike / posDepSm;
scintillation[0] = nHits; // MC-true integer hits in same OR different PMTs,
// NO double phe effect
scintillation[1] =
Nphe; // MC-true integer hits WITH double phe effect (Nphe > nHits)
scintillation[2] = pulseArea; // floating real# smeared DAQ pulse areas in
// phe, NO XYZ correction
scintillation[3] =
pulseAreaC; // smeared DAQ pulse areas in phe, WITH XYZ correction
scintillation[4] = Nphd; // same as pulse area, adjusted/corrected *downward*
// for 2-PE effect (LUX phd units)
scintillation[5] = NphdC; // same as Nphd, but XYZ-corrected
scintillation[6] = spike; // floating real# spike count, NO XYZ correction
scintillation[7] = spikeC; // floating real# spike count, WITH XYZ correction
scintillation[8] = spike;