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Merge pull request #45 from tegonzalo/main
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Added various new experiments and fixed a few bugs
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@temken
temken authored Jan 24, 2024
2 parents e6a47a5 + 32159c7 commit 60459b0
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Showing 7 changed files with 152 additions and 13 deletions.
2 changes: 1 addition & 1 deletion include/obscura/Direct_Detection_Ionization.hpp
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Expand Up @@ -82,4 +82,4 @@ class DM_Detector_Ionization : public DM_Detector

} // namespace obscura

#endif
#endif
7 changes: 7 additions & 0 deletions include/obscura/Experiments.hpp
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Expand Up @@ -20,19 +20,26 @@ extern DM_Detector_Ionization_ER XENON10_S2_ER();
extern DM_Detector_Ionization_ER XENON100_S2_ER();
extern DM_Detector_Ionization_ER XENON1T_S2_ER();
extern DM_Detector_Ionization_ER DarkSide50_S2_ER();
extern DM_Detector_Ionization_ER DarkSide50_S2_ER_2023();
extern DM_Detector_Ionization_ER PandaX_4T_S2_ER();
extern DM_Detector_Ionization_ER LZ_S2_ER();

//3. Electron recoil experiments - Semiconductor/crystals
extern DM_Detector_Crystal protoSENSEI_at_Surface();
extern DM_Detector_Crystal protoSENSEI_at_MINOS();
extern DM_Detector_Crystal SENSEI_at_MINOS();
extern DM_Detector_Crystal CDMS_HVeV_2018();
extern DM_Detector_Crystal CDMS_HVeV_2020();
extern DM_Detector_Crystal DAMIC_M_2023();

//4. Migdal experiments - Ionization
extern DM_Detector_Ionization_Migdal XENON10_S2_Migdal();
extern DM_Detector_Ionization_Migdal XENON100_S2_Migdal();
extern DM_Detector_Ionization_Migdal XENON1T_S2_Migdal();
extern DM_Detector_Ionization_Migdal DarkSide50_S2_Migdal();
extern DM_Detector_Ionization_Migdal DarkSide50_S2_Migdal_2023();
extern DM_Detector_Ionization_Migdal PandaX_4T_S2_Migdal();
extern DM_Detector_Ionization_Migdal LZ_S2_Migdal();

} // namespace obscura

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14 changes: 14 additions & 0 deletions src/Configuration.cpp
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Expand Up @@ -492,6 +492,12 @@ void Configuration::Construct_DM_Detector()
DM_detector = new DM_Detector_Ionization_ER(XENON1T_S2_ER());
else if(DD_experiment == "DarkSide-50_S2")
DM_detector = new DM_Detector_Ionization_ER(DarkSide50_S2_ER());
else if(DD_experiment == "DarkSide-50_S2_2023")
DM_detector = new DM_Detector_Ionization_ER(DarkSide50_S2_ER_2023());
else if(DD_experiment == "PandaX-4T_S2")
DM_detector = new DM_Detector_Ionization_ER(PandaX_4T_S2_ER());
else if(DD_experiment == "LZ_S2")
DM_detector = new DM_Detector_Ionization_ER(LZ_S2_ER());

else if(DD_experiment == "XENON10_S2_Migdal")
DM_detector = new DM_Detector_Ionization_Migdal(XENON10_S2_Migdal());
Expand All @@ -501,6 +507,12 @@ void Configuration::Construct_DM_Detector()
DM_detector = new DM_Detector_Ionization_Migdal(XENON1T_S2_Migdal());
else if(DD_experiment == "DarkSide-50_S2_Migdal")
DM_detector = new DM_Detector_Ionization_Migdal(DarkSide50_S2_Migdal());
else if(DD_experiment == "DarkSide-50_S2_Migdal_2023")
DM_detector = new DM_Detector_Ionization_Migdal(DarkSide50_S2_Migdal_2023());
else if(DD_experiment == "PandaX-4T_S2_Migdal")
DM_detector = new DM_Detector_Ionization_Migdal(PandaX_4T_S2_Migdal());
else if(DD_experiment == "LZ_S2_Migdal")
DM_detector = new DM_Detector_Ionization_Migdal(LZ_S2_Migdal());

else if(DD_experiment == "protoSENSEI@surface")
DM_detector = new DM_Detector_Crystal(protoSENSEI_at_Surface());
Expand All @@ -512,6 +524,8 @@ void Configuration::Construct_DM_Detector()
DM_detector = new DM_Detector_Crystal(CDMS_HVeV_2018());
else if(DD_experiment == "CDMS-HVeV_2020")
DM_detector = new DM_Detector_Crystal(CDMS_HVeV_2020());
else if(DD_experiment == "DAMIC-M_2023")
DM_detector = new DM_Detector_Crystal(DAMIC_M_2023());

else
{
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6 changes: 3 additions & 3 deletions src/Direct_Detection.cpp
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Expand Up @@ -25,16 +25,16 @@ double DM_Detector::Log_Likelihood(DM_Particle& DM, DM_Distribution& DM_distr)
double s = DM_Signals_Total(DM, DM_distr);
unsigned long int n = observed_events;
double b = expected_background;
// if(b < 1.0e-4 && (n > s)) b = n-s; // see eq.(29) of [arXiv:1705.07920]
if(b < 1.0e-4 && (n > s)) b = n-s; // see eq.(29) of [arXiv:1705.07920]
return libphysica::Log_Likelihood_Poisson(s, n, b);
}
else if(statistical_analysis == "Binned Poisson")
{
std::vector<double> s = DM_Signals_Binned(DM, DM_distr);
std::vector<unsigned long int> n = bin_observed_events;
std::vector<double> b = bin_expected_background;
// for(unsigned int i = 0; i < b.size(); i++)
// if(b[i] < 1.0e-4 && (n[i] > s[i])) b[i] = n[i]-s[i]; // see eq.(29) of [arXiv:1705.07920]
for(unsigned int i = 0; i < b.size(); i++)
if(b[i] < 1.0e-4 && (n[i] > s[i])) b[i] = n[i]-s[i]; // see eq.(29) of [arXiv:1705.07920]
return libphysica::Log_Likelihood_Poisson_Binned(s, n, b);
}
else if(statistical_analysis == "Maximum Gap")
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8 changes: 4 additions & 4 deletions src/Direct_Detection_Ionization.cpp
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Expand Up @@ -396,10 +396,10 @@ void DM_Detector_Ionization::Print_Summary(int MPI_rank) const
<< "\tPE (S2) bins:\t\t" << (using_S2_bins ? "[x]" : "[ ]") << std::endl;
if(using_S2_bins || using_S2_threshold)
{
std::cout << "\tmu_PE:\t\t" << S2_mu << std::endl
<< "\tsigma_PE:\t" << S2_sigma << std::endl
<< "\tImported trigger efficiencies:\t" << (Trigger_Efficiency_PE.empty() ? "[ ]" : "[x]") << std::endl
<< "\tImported acc. efficiencies:\t" << (Acceptance_Efficiency_PE.empty() ? "[ ]" : "[x]") << std::endl;
std::cout << "\tmu_PE:\t\t" << S2_mu << std::endl
<< "\tsigma_PE:\t" << S2_sigma << std::endl
<< "\tImported trigger efficiencies:\t" << (Trigger_Efficiency_PE.empty() ? "[ ]" : "[x]") << std::endl
<< "\tImported acc. efficiencies:\t" << (Acceptance_Efficiency_PE.empty() ? "[ ]" : "[x]") << std::endl;
if(using_S2_bins)
{
std::cout << "\n\t\tBin\tBin range [S2]" << std::endl;
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6 changes: 3 additions & 3 deletions src/Direct_Detection_Migdal.cpp
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Expand Up @@ -9,19 +9,19 @@ namespace obscura
{
using namespace libphysica::natural_units;

double vMinimal_Migdal(double ER, double Ee, double mDM, double mN)
double vMinimal_Migdal(double ER, double Ee, double mDM, double mN, double binding_energy)
{
//eq 5 of https://arxiv.org/pdf/1711.09906.pdf
double mu = libphysica::Reduced_Mass(mDM, mN);
return sqrt(mN * ER / 2.0 / mu / mu) + Ee / sqrt(2.0 * mN * ER);
return sqrt(mN * ER / 2.0 / mu / mu) + (Ee + binding_energy) / sqrt(2.0 * mN * ER);
}

double dRdEe_Ionization_Migdal(double Ee, const DM_Particle& DM, DM_Distribution& DM_distr, const Isotope& isotope, Atomic_Electron& shell)
{
double NT = 1.0 / isotope.mass;

std::function<double(double)> ER_integrand = [Ee, &DM, &DM_distr, &isotope, &shell](double ER) {
double vMin = (ER > 0) ? vMinimal_Migdal(ER, Ee, DM.mass, isotope.mass) : 1.0e-20 * cm / sec;
double vMin = (ER > 0) ? vMinimal_Migdal(ER, Ee, DM.mass, isotope.mass, shell.binding_energy) : 1.0e-20 * cm / sec;
if(vMin >= DM_distr.Maximum_DM_Speed())
return 0.0;
if(DM.DD_use_eta_function && DM_distr.DD_use_eta_function)
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122 changes: 120 additions & 2 deletions src/Experiments.cpp
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Expand Up @@ -185,6 +185,57 @@ DM_Detector_Ionization_ER DarkSide50_S2_ER()
return detector;
}

DM_Detector_Ionization_ER DarkSide50_S2_ER_2023()
{
// Source: arXiv:2207.11968
std::string target_name = "Ar";
double exposure = 12306 * kg * day;
unsigned int ne_threshold = 4;
// Digitised from Figure 1 (x Ne x 0.25 x exposure)
std::vector<unsigned long int> observed_event_bins = {298, 372, 456, 488, 583, 775, 965, 1053, 1182, 1644, 1723, 1992, \
2408, 2397, 2735, 3139, 3366};
DM_Detector_Ionization_ER detector("DarkSide-50_S2_2023", exposure, target_name);
detector.Use_Electron_Bins(ne_threshold, 17);
detector.Set_Observed_Events(observed_event_bins);

return detector;
}

DM_Detector_Ionization_ER PandaX_4T_S2_ER()
{
// Source: arXiv:2308.01540
std::string target_name = "Xe";
double exposure = 550 * kg * year;
std::vector<unsigned long int> observed_event_bins = {34, 14, 13, 7, 11, 12, 14};
std::vector<double> bkg_event_bins = {57.5609, 25.1404, 23.1201, 20.1953, 17.5385, 16.9677, 13.702};

// Here we assume that the PE response matches indentically to number of electrons
double ne_threshold = 4;

DM_Detector_Ionization_ER detector("PandaX-4T_S2", exposure, target_name);
detector.Use_Electron_Bins(ne_threshold, 7);
detector.Set_Observed_Events(observed_event_bins);
detector.Set_Expected_Background(bkg_event_bins);

return detector;
}

DM_Detector_Ionization_ER LZ_S2_ER()
{
// Source: arXiv:2307.15753
std::string target_name = "Ar";
double exposure = 550 * kg * day;

DM_Detector_Ionization_ER detector("LZ_S2", exposure, target_name);

//TODO : There is not enough info in the experiment to reproduce the S1-S2 signal

std::cerr << libphysica::Formatted_String("Error", "Red", true) << " in obscura::LZ_S2_ER(): Not implemented." << std::endl;
std::exit(EXIT_FAILURE);

return detector;
}

//3. Electron recoil experiments - Semiconductor
DM_Detector_Crystal protoSENSEI_at_Surface()
{
Expand Down Expand Up @@ -271,6 +322,23 @@ DM_Detector_Crystal CDMS_HVeV_2020()
return detector;
}

DM_Detector_Crystal DAMIC_M_2023()
{
// Source: arXiv:2302.02372
// Paper only reports 40% of the data, so scale exposure accordingly
double DAMIC_M_exposure = 0.4 * 85.23 * gram * day;
unsigned int DAMIC_M_Q_threshold = 1;
unsigned int DAMIC_M_N_bins = 3;
std::vector<unsigned long int> DAMIC_M_observed_events = {4216354, 11345, 19};

DM_Detector_Crystal detector("DAMIC-M_2023", DAMIC_M_exposure, "Si");
detector.Use_Q_Bins(DAMIC_M_Q_threshold, DAMIC_M_N_bins);
detector.Set_Observed_Events(DAMIC_M_observed_events);

return detector;
}


//4. Migdal experiments - Ionization
DM_Detector_Ionization_Migdal XENON10_S2_Migdal()
{
Expand Down Expand Up @@ -316,7 +384,7 @@ DM_Detector_Ionization_Migdal XENON100_S2_Migdal()

DM_Detector_Ionization_Migdal XENON1T_S2_Migdal()
{
// Source: arXiv:1907.11485
// Source: arXiv:1907.11485, arXiv:1907.12771
std::string target_name = "Xe";
double exposure = 80755.2 * kg * day;
std::vector<unsigned long int> observed_event_bins = {8, 7, 2, 1};
Expand Down Expand Up @@ -348,4 +416,54 @@ DM_Detector_Ionization_Migdal DarkSide50_S2_Migdal()
return detector;
}

} // namespace obscura

DM_Detector_Ionization_Migdal DarkSide50_S2_Migdal_2023()
{
// Source: arXiv:2207.11967
std::string target_name = "Ar";
double exposure = 6786.0 * kg * day;
unsigned int ne_threshold = 4;
std::vector<unsigned long int> observed_event_bins = {74, 74, 76, 70, 73, 86, 96, 96, 99, 126, 123, 133, 151, 141, 152, 165, 168};
DM_Detector_Ionization_Migdal detector("DarkSide-50_S2_2023", exposure, target_name);
detector.Use_Electron_Bins(ne_threshold, 17);
detector.Set_Observed_Events(observed_event_bins);

return detector;
}

DM_Detector_Ionization_Migdal PandaX_4T_S2_Migdal()
{
// Source: arXiv:2308.01540
std::string target_name = "Xe";
double exposure = 550 * kg * year;
std::vector<unsigned long int> observed_event_bins = {34, 14, 13, 7, 11, 12, 14};
std::vector<double> bkg_event_bins = {57.5609, 25.1404, 23.1201, 20.1953, 17.5385, 16.9677, 13.702};

// Here we assume that the PE response matches indentically to number of electrons
double ne_threshold = 4;

DM_Detector_Ionization_Migdal detector("PandaX-4T_S2", exposure, target_name);
detector.Use_Electron_Bins(ne_threshold, 7);
detector.Set_Observed_Events(observed_event_bins);
detector.Set_Expected_Background(bkg_event_bins);

return detector;
}

DM_Detector_Ionization_Migdal LZ_S2_Migdal()
{
// Source: arXiv:2307.15753
std::string target_name = "Ar";
double exposure = 550 * kg * day;

DM_Detector_Ionization_Migdal detector("LZ_S2", exposure, target_name);

//TODO : There is not enough info in the experiment to reproduce the S1-S2 signal

std::cerr << libphysica::Formatted_String("Error", "Red", true) << " in obscura::LZ_S2_Migdal(): Not implemented." << std::endl;
std::exit(EXIT_FAILURE);

return detector;
}

} // namespace obscura

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