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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,113 +1,121 @@ | ||
| ///______________________________________________________________________________ | ||
| ///______________________________________________________________________________ | ||
| ///______________________________________________________________________________ | ||
| /************************************************************************* | ||
| * This file is part of the REST software framework. * | ||
| * * | ||
| * Copyright (C) 2016 GIFNA/TREX (University of Zaragoza) * | ||
| * For more information see http://gifna.unizar.es/trex * | ||
| * * | ||
| * REST is free software: you can redistribute it and/or modify * | ||
| * it under the terms of the GNU General Public License as published by * | ||
| * the Free Software Foundation, either version 3 of the License, or * | ||
| * (at your option) any later version. * | ||
| * * | ||
| * REST is distributed in the hope that it will be useful, * | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of * | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | ||
| * GNU General Public License for more details. * | ||
| * * | ||
| * You should have a copy of the GNU General Public License along with * | ||
| * REST in $REST_PATH/LICENSE. * | ||
| * If not, see http://www.gnu.org/licenses/. * | ||
| * For the list of contributors see $REST_PATH/CREDITS. * | ||
| *************************************************************************/ | ||
|
|
||
| ////////////////////////////////////////////////////////////////////////// | ||
| /// TRestDetectorHitsSmearingProcess will introduce a stochastic smearing on the | ||
| /// energy of the hits for each event. The total energy of each event will be | ||
| /// re-distributed following a gaussian shaped function. | ||
| /// | ||
| /// The energy resolution will follow a root square law with the energy | ||
| /// using the `energyReference` and the `resolutionReference` as a pivoting | ||
| /// point. | ||
| /// | ||
| /// RESTSoft : Software for Rare Event Searches with TPCs | ||
| /// Therefore, the process defines only two parameters, one being the energy | ||
| /// at wich the energy resolution is "known", and the FWHM in percentage at | ||
| /// that given energy, `resolutionReference`. | ||
| /// | ||
| /// TRestDetectorHitsSmearingProcess.cxx | ||
| /// \code | ||
| /// <addProcess type="TRestDetectorHitsSmearingProcess" name="smear" | ||
| /// title="Energy resolution smearing"> | ||
| /// <parameter name="energyReference" value="250keV" /> | ||
| /// <parameter name="resolutionReference" value="15" /> | ||
| /// </addProcess> | ||
| /// \endcode | ||
| /// | ||
| /// Template to use to design "event process" classes inherited from | ||
| /// TRestDetectorHitsSmearingProcess | ||
| /// How to use: replace TRestDetectorHitsSmearingProcess by your name, | ||
| /// fill the required functions following instructions and add all | ||
| /// needed additional members and funcionality | ||
| /// The following image is the result of smearing the energy of an electron | ||
| /// gun of 250keV. It was produced using the exercise 3.2 inside the | ||
| /// [day3/session2](https://github.com/rest-for-physics/rest-school/tree/master/day3/session2) | ||
| /// at the rest-school repository. | ||
| /// | ||
| /// \htmlonly <style>div.image img[src="smear.png"]{width:500px;}</style> \endhtmlonly | ||
| ///  | ||
| /// | ||
| ///-------------------------------------------------------------------------- | ||
| /// | ||
| /// RESTsoft - Software for Rare Event Searches with TPCs | ||
| /// | ||
| /// History of developments: | ||
| /// | ||
| /// 2016-February: First implementation of TRestDetectorHitsSmearingProcess | ||
| /// \author Javier G. Garza | ||
| /// | ||
| /// 2023-January: This class has been documented | ||
| /// \author Javier Galan - javier.galan@unizar.es | ||
| /// | ||
| /// \class TRestDetectorHitsSmearingProcess | ||
| /// | ||
| /// <hr> | ||
| /// | ||
| /// feb 2016: First concept | ||
| /// Created as part of the conceptualization of existing REST | ||
| /// software. | ||
| /// Javier G. Garza | ||
| ///_______________________________________________________________________________ | ||
|
|
||
| #include "TRestDetectorHitsSmearingProcess.h" | ||
|
|
||
| using namespace std; | ||
|
|
||
| ClassImp(TRestDetectorHitsSmearingProcess); | ||
|
|
||
| /////////////////////////////////////////////// | ||
| /// \brief Default constructor | ||
| /// | ||
| TRestDetectorHitsSmearingProcess::TRestDetectorHitsSmearingProcess() { Initialize(); } | ||
|
|
||
| TRestDetectorHitsSmearingProcess::TRestDetectorHitsSmearingProcess(const char* configFilename) { | ||
| Initialize(); | ||
|
|
||
| if (LoadConfigFromFile(configFilename)) { | ||
| LoadDefaultConfig(); | ||
| } | ||
|
|
||
| PrintMetadata(); | ||
| } | ||
|
|
||
| /////////////////////////////////////////////// | ||
| /// \brief Default destructor | ||
| /// | ||
| TRestDetectorHitsSmearingProcess::~TRestDetectorHitsSmearingProcess() { | ||
| delete fHitsOutputEvent; | ||
| delete fOutputEvent; | ||
| // TRestDetectorHitsSmearingProcess destructor | ||
| } | ||
|
|
||
| void TRestDetectorHitsSmearingProcess::LoadDefaultConfig() { | ||
| SetTitle("Default config"); | ||
|
|
||
| fEnergyRef = 5.9; | ||
| fResolutionAtERef = 15.0; | ||
| } | ||
|
|
||
| /////////////////////////////////////////////// | ||
| /// \brief Function to initialize input/output event members and define the section name | ||
| /// | ||
| void TRestDetectorHitsSmearingProcess::Initialize() { | ||
| SetSectionName(this->ClassName()); | ||
| SetLibraryVersion(LIBRARY_VERSION); | ||
|
|
||
| fEnergyRef = 5.9; | ||
| fResolutionAtERef = 15.0; | ||
|
|
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| fHitsInputEvent = nullptr; | ||
| fHitsOutputEvent = new TRestDetectorHitsEvent(); | ||
|
|
||
| fRandom = nullptr; | ||
| } | ||
|
|
||
| void TRestDetectorHitsSmearingProcess::LoadConfig(const string& configFilename, const string& name) { | ||
| if (LoadConfigFromFile(configFilename, name)) { | ||
| LoadDefaultConfig(); | ||
| } | ||
|
|
||
| PrintMetadata(); | ||
|
|
||
| fGas = GetMetadata<TRestDetectorGas>(); | ||
| fInputEvent = nullptr; | ||
| fOutputEvent = new TRestDetectorHitsEvent(); | ||
| } | ||
|
|
||
| void TRestDetectorHitsSmearingProcess::InitProcess() { | ||
| // Function to be executed once at the beginning of process | ||
| // (before starting the process of the events) | ||
|
|
||
| // Start by calling the InitProcess function of the abstract class. | ||
| // Comment this if you don't want it. | ||
| // TRestEventProcess::InitProcess(); | ||
| if (fRandom != nullptr) delete fRandom; | ||
| fRandom = new TRandom3(fSeed); | ||
| fSeed = fRandom->TRandom::GetSeed(); | ||
| } | ||
|
|
||
| /////////////////////////////////////////////// | ||
| /// \brief The main processing event function | ||
| /// | ||
| TRestEvent* TRestDetectorHitsSmearingProcess::ProcessEvent(TRestEvent* inputEvent) { | ||
| fHitsInputEvent = (TRestDetectorHitsEvent*)inputEvent; | ||
| fHitsOutputEvent->SetEventInfo(fHitsInputEvent); | ||
| fInputEvent = (TRestDetectorHitsEvent*)inputEvent; | ||
| fOutputEvent->SetEventInfo(fInputEvent); | ||
|
|
||
| Double_t eDep = fHitsInputEvent->GetTotalEnergy(); | ||
| Double_t eDep = fInputEvent->GetTotalEnergy(); | ||
| Double_t eRes = fResolutionAtERef * TMath::Sqrt(fEnergyRef / eDep) / 2.35 / 100.0; | ||
|
|
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| Double_t gain = fRandom->Gaus(1.0, eRes); | ||
| for (unsigned int hit = 0; hit < fHitsInputEvent->GetNumberOfHits(); hit++) | ||
| fHitsOutputEvent->AddHit(fHitsInputEvent->GetX(hit), fHitsInputEvent->GetY(hit), | ||
| fHitsInputEvent->GetZ(hit), fHitsInputEvent->GetEnergy(hit) * gain, | ||
| fHitsInputEvent->GetTime(hit), fHitsInputEvent->GetType(hit)); | ||
|
|
||
| return fHitsOutputEvent; | ||
| } | ||
|
|
||
| void TRestDetectorHitsSmearingProcess::EndProcess() { | ||
| // Function to be executed once at the end of the process | ||
| // (after all events have been processed) | ||
|
|
||
| // Start by calling the EndProcess function of the abstract class. | ||
| // Comment this if you don't want it. | ||
| // TRestEventProcess::EndProcess(); | ||
| } | ||
| for (unsigned int hit = 0; hit < fInputEvent->GetNumberOfHits(); hit++) | ||
| fOutputEvent->AddHit(fInputEvent->GetX(hit), fInputEvent->GetY(hit), fInputEvent->GetZ(hit), | ||
| fInputEvent->GetEnergy(hit) * gain, fInputEvent->GetTime(hit), | ||
| fInputEvent->GetType(hit)); | ||
|
|
||
| void TRestDetectorHitsSmearingProcess::InitFromConfigFile() { | ||
| fEnergyRef = GetDblParameterWithUnits("energyReference"); | ||
| fResolutionAtERef = StringToDouble(GetParameter("resolutionReference")); | ||
| fRandom = new TRandom3(StringToDouble(GetParameter("seed", "0"))); | ||
| return fOutputEvent; | ||
| } |