void ModeratorTzero::execEvent(const std::string &emode) { g_log.information("Processing event workspace"); const MatrixWorkspace_const_sptr matrixInputWS = getProperty("InputWorkspace"); EventWorkspace_const_sptr inputWS = boost::dynamic_pointer_cast<const EventWorkspace>(matrixInputWS); // generate the output workspace pointer const size_t numHists = static_cast<size_t>(inputWS->getNumberHistograms()); Mantid::API::MatrixWorkspace_sptr matrixOutputWS = getProperty("OutputWorkspace"); EventWorkspace_sptr outputWS; if (matrixOutputWS == matrixInputWS) { outputWS = boost::dynamic_pointer_cast<EventWorkspace>(matrixOutputWS); } else { // Make a brand new EventWorkspace outputWS = boost::dynamic_pointer_cast<EventWorkspace>( WorkspaceFactory::Instance().create("EventWorkspace", numHists, 2, 1)); // Copy geometry over. WorkspaceFactory::Instance().initializeFromParent(inputWS, outputWS, false); // You need to copy over the data as well. outputWS->copyDataFrom((*inputWS)); // Cast to the matrixOutputWS and save it matrixOutputWS = boost::dynamic_pointer_cast<MatrixWorkspace>(outputWS); setProperty("OutputWorkspace", matrixOutputWS); } // Get pointers to sample and source IComponent_const_sptr source = m_instrument->getSource(); IComponent_const_sptr sample = m_instrument->getSample(); double Lss = source->getDistance(*sample); // distance from source to sample // calculate tof shift once for all neutrons if emode==Direct double t0_direct(-1); if (emode == "Direct") { Kernel::Property *eiprop = inputWS->run().getProperty("Ei"); double Ei = boost::lexical_cast<double>(eiprop->value()); mu::Parser parser; parser.DefineVar("incidentEnergy", &Ei); // associate E1 to this parser parser.SetExpr(m_formula); t0_direct = parser.Eval(); } // Loop over the spectra Progress prog(this, 0.0, 1.0, numHists); // report progress of algorithm PARALLEL_FOR1(outputWS) for (int i = 0; i < static_cast<int>(numHists); ++i) { PARALLEL_START_INTERUPT_REGION size_t wsIndex = static_cast<size_t>(i); EventList &evlist = outputWS->getEventList(wsIndex); if (evlist.getNumberEvents() > 0) // don't bother with empty lists { IDetector_const_sptr det; double L1(Lss); // distance from source to sample double L2(-1); // distance from sample to detector try { det = inputWS->getDetector(i); if (det->isMonitor()) { // redefine the sample as the monitor L1 = source->getDistance(*det); L2 = 0; } else { L2 = sample->getDistance(*det); } } catch (Exception::NotFoundError &) { g_log.error() << "Unable to calculate distances to/from detector" << i << std::endl; } if (L2 >= 0) { // One parser for each parallel processor needed (except Edirect mode) double E1; mu::Parser parser; parser.DefineVar("incidentEnergy", &E1); // associate E1 to this parser parser.SetExpr(m_formula); // fast neutrons are shifted by min_t0_next, irrespective of tof double v1_max = L1 / m_t1min; E1 = m_convfactor * v1_max * v1_max; double min_t0_next = parser.Eval(); if (emode == "Indirect") { double t2(-1.0); // time from sample to detector. (-1) signals error if (det->isMonitor()) { t2 = 0.0; } else { static const double convFact = 1.0e-6 * sqrt(2 * PhysicalConstants::meV / PhysicalConstants::NeutronMass); std::vector<double> wsProp = det->getNumberParameter("Efixed"); if (!wsProp.empty()) { double E2 = wsProp.at(0); //[E2]=meV double v2 = convFact * sqrt(E2); //[v2]=meter/microsec t2 = L2 / v2; } else { // t2 is kept to -1 if no Efixed is found g_log.debug() << "Efixed not found for detector " << i << std::endl; } } if (t2 >= 0) // t2 < 0 when no detector info is available { // fix the histogram bins MantidVec &x = evlist.dataX(); for (double &tof : x) { if (tof < m_t1min + t2) tof -= min_t0_next; else tof -= CalculateT0indirect(tof, L1, t2, E1, parser); } MantidVec tofs = evlist.getTofs(); for (double &tof : tofs) { if (tof < m_t1min + t2) tof -= min_t0_next; else tof -= CalculateT0indirect(tof, L1, t2, E1, parser); } evlist.setTofs(tofs); evlist.setSortOrder(Mantid::DataObjects::EventSortType::UNSORTED); } // end of if( t2>= 0) } // end of if(emode=="Indirect") else if (emode == "Elastic") { // Apply t0 correction to histogram bins MantidVec &x = evlist.dataX(); for (double &tof : x) { if (tof < m_t1min * (L1 + L2) / L1) tof -= min_t0_next; else tof -= CalculateT0elastic(tof, L1 + L2, E1, parser); } MantidVec tofs = evlist.getTofs(); for (double &tof : tofs) { // add a [-0.1,0.1] microsecond noise to avoid artifacts // resulting from original tof data if (tof < m_t1min * (L1 + L2) / L1) tof -= min_t0_next; else tof -= CalculateT0elastic(tof, L1 + L2, E1, parser); } evlist.setTofs(tofs); evlist.setSortOrder(Mantid::DataObjects::EventSortType::UNSORTED); MantidVec tofs_b = evlist.getTofs(); MantidVec xarray = evlist.readX(); } // end of else if(emode=="Elastic") else if (emode == "Direct") { // fix the histogram bins MantidVec &x = evlist.dataX(); for (double &tof : x) { tof -= t0_direct; } MantidVec tofs = evlist.getTofs(); for (double &tof : tofs) { tof -= t0_direct; } evlist.setTofs(tofs); evlist.setSortOrder(Mantid::DataObjects::EventSortType::UNSORTED); } // end of else if(emode=="Direct") } // end of if(L2 >= 0) } // end of if (evlist.getNumberEvents() > 0) prog.report(); PARALLEL_END_INTERUPT_REGION } // end of for (int i = 0; i < static_cast<int>(numHists); ++i) PARALLEL_CHECK_INTERUPT_REGION outputWS->clearMRU(); // Clears the Most Recent Used lists */ } // end of void ModeratorTzero::execEvent()
void ModeratorTzero::execEvent(const std::string &emode) { g_log.information("Processing event workspace"); const MatrixWorkspace_const_sptr matrixInputWS = getProperty("InputWorkspace"); // generate the output workspace pointer API::MatrixWorkspace_sptr matrixOutputWS = getProperty("OutputWorkspace"); if (matrixOutputWS != matrixInputWS) { matrixOutputWS = matrixInputWS->clone(); setProperty("OutputWorkspace", matrixOutputWS); } auto outputWS = boost::dynamic_pointer_cast<EventWorkspace>(matrixOutputWS); // calculate tof shift once for all neutrons if emode==Direct double t0_direct(-1); if (emode == "Direct") { Kernel::Property *eiprop = outputWS->run().getProperty("Ei"); double Ei = boost::lexical_cast<double>(eiprop->value()); mu::Parser parser; parser.DefineVar("incidentEnergy", &Ei); // associate E1 to this parser parser.SetExpr(m_formula); t0_direct = parser.Eval(); } const auto &spectrumInfo = outputWS->spectrumInfo(); const double Lss = spectrumInfo.l1(); // Loop over the spectra const size_t numHists = static_cast<size_t>(outputWS->getNumberHistograms()); Progress prog(this, 0.0, 1.0, numHists); // report progress of algorithm PARALLEL_FOR_IF(Kernel::threadSafe(*outputWS)) for (int i = 0; i < static_cast<int>(numHists); ++i) { PARALLEL_START_INTERUPT_REGION size_t wsIndex = static_cast<size_t>(i); EventList &evlist = outputWS->getSpectrum(wsIndex); if (evlist.getNumberEvents() > 0) // don't bother with empty lists { double L1(Lss); // distance from source to sample double L2(-1); // distance from sample to detector if (spectrumInfo.hasDetectors(i)) { if (spectrumInfo.isMonitor(i)) { // redefine the sample as the monitor L1 = Lss + spectrumInfo.l2(i); // L2 in SpectrumInfo defined negative L2 = 0; } else { L2 = spectrumInfo.l2(i); } } else { g_log.error() << "Unable to calculate distances to/from detector" << i << '\n'; } if (L2 >= 0) { // One parser for each parallel processor needed (except Edirect mode) double E1; mu::Parser parser; parser.DefineVar("incidentEnergy", &E1); // associate E1 to this parser parser.SetExpr(m_formula); // fast neutrons are shifted by min_t0_next, irrespective of tof double v1_max = L1 / m_t1min; E1 = m_convfactor * v1_max * v1_max; double min_t0_next = parser.Eval(); if (emode == "Indirect") { double t2(-1.0); // time from sample to detector. (-1) signals error if (spectrumInfo.isMonitor(i)) { t2 = 0.0; } else { static const double convFact = 1.0e-6 * sqrt(2 * PhysicalConstants::meV / PhysicalConstants::NeutronMass); std::vector<double> wsProp = spectrumInfo.detector(i).getNumberParameter("Efixed"); if (!wsProp.empty()) { double E2 = wsProp.at(0); //[E2]=meV double v2 = convFact * sqrt(E2); //[v2]=meter/microsec t2 = L2 / v2; } else { // t2 is kept to -1 if no Efixed is found g_log.debug() << "Efixed not found for detector " << i << '\n'; } } if (t2 >= 0) // t2 < 0 when no detector info is available { // fix the histogram bins auto &x = evlist.mutableX(); for (double &tof : x) { if (tof < m_t1min + t2) tof -= min_t0_next; else tof -= CalculateT0indirect(tof, L1, t2, E1, parser); } MantidVec tofs = evlist.getTofs(); for (double &tof : tofs) { if (tof < m_t1min + t2) tof -= min_t0_next; else tof -= CalculateT0indirect(tof, L1, t2, E1, parser); } evlist.setTofs(tofs); evlist.setSortOrder(Mantid::DataObjects::EventSortType::UNSORTED); } // end of if( t2>= 0) } // end of if(emode=="Indirect") else if (emode == "Elastic") { // Apply t0 correction to histogram bins auto &x = evlist.mutableX(); for (double &tof : x) { if (tof < m_t1min * (L1 + L2) / L1) tof -= min_t0_next; else tof -= CalculateT0elastic(tof, L1 + L2, E1, parser); } MantidVec tofs = evlist.getTofs(); for (double &tof : tofs) { // add a [-0.1,0.1] microsecond noise to avoid artifacts // resulting from original tof data if (tof < m_t1min * (L1 + L2) / L1) tof -= min_t0_next; else tof -= CalculateT0elastic(tof, L1 + L2, E1, parser); } evlist.setTofs(tofs); evlist.setSortOrder(Mantid::DataObjects::EventSortType::UNSORTED); } // end of else if(emode=="Elastic") else if (emode == "Direct") { // fix the histogram bins evlist.mutableX() -= t0_direct; MantidVec tofs = evlist.getTofs(); for (double &tof : tofs) { tof -= t0_direct; } evlist.setTofs(tofs); evlist.setSortOrder(Mantid::DataObjects::EventSortType::UNSORTED); } // end of else if(emode=="Direct") } // end of if(L2 >= 0) } // end of if (evlist.getNumberEvents() > 0) prog.report(); PARALLEL_END_INTERUPT_REGION } // end of for (int i = 0; i < static_cast<int>(numHists); ++i) PARALLEL_CHECK_INTERUPT_REGION outputWS->clearMRU(); // Clears the Most Recent Used lists */ } // end of void ModeratorTzero::execEvent()