MuonR4::RpcFastDigiTool Class Reference

#include <RpcFastDigiTool.h>

Inheritance diagram for MuonR4::RpcFastDigiTool:

Collaboration diagram for MuonR4::RpcFastDigiTool:

Public Member Functions
	RpcFastDigiTool (const std::string &type, const std::string &name, const IInterface *pIID)
StatusCode	initialize () override final
StatusCode	finalize () override final
StatusCode	processBunchXing (int bunchXing, SubEventIterator bSubEvents, SubEventIterator eSubEvents) override final
StatusCode	mergeEvent (const EventContext &ctx) override final
StatusCode	prepareEvent (const EventContext &ctx, const unsigned int) override final
	When being run from PileUpToolsAlgs, this method is called at the start of the subevts loop. More...
StatusCode	processAllSubEvents (const EventContext &ctx) override final
	alternative interface which uses the PileUpMergeSvc to obtain all the required SubEvents. More...
StatusCode	processAllSubEvents (const EventContext &ctx) const
	Reentrant version of the digitization tool. More...

Protected Types
using	TimedHit = TimedHitPtr< xAOD::MuonSimHit >
using	TimedHits = std::vector< TimedHitPtr< xAOD::MuonSimHit > >
template<class DetType >
using	OutDigitCache_t = std::vector< std::unique_ptr< DetType > >
	DigitContainers are sorted by DigitCollections which are the ensemble of all hits in a given MuonChamber. More...
using	DeadTimeMap = std::unordered_map< Identifier, double >

Protected Member Functions
StatusCode	digitize (const EventContext &ctx, const TimedHits &hitsToDigit, xAOD::MuonSimHitContainer *sdoContainer) const override final
	Digitize the time ordered hits and write them to the digit format specific for the detector technology. More...
CLHEP::HepRandomEngine *	getRandomEngine (const EventContext &ctx) const
xAOD::MuonSimHit *	addSDO (const TimedHit &hit, xAOD::MuonSimHitContainer *sdoContainer) const
	Adds the timed simHit to the output SDO container. More...
const ActsGeometryContext &	getGeoCtx (const EventContext &ctx) const
	Returns the reference to the ActsGeometryContext needed to fetch global positions from the Readout geometry. More...
template<class Container >
StatusCode	retrieveContainer (const EventContext &ctx, const SG::ReadHandleKey< Container > &key, const Container *&contPtr) const
	Helper function to retrieve a container from StoreGate. More...
template<class Container >
StatusCode	retrieveConditions (const EventContext &ctx, const SG::ReadCondHandleKey< Container > &key, const Container *&contPtr) const
	Helper function to access the conditions data. More...
template<class DigitColl >
DigitColl *	fetchCollection (const Identifier &hitId, OutDigitCache_t< DigitColl > &digitCache) const
	Helper function that provides fetches the proper DigitCollection from the DigitCache for a given hit identifier If the Collection is fetched for the first time, it's inserted into the cache first. More...
template<class DigitCont , class DigitColl >
StatusCode	writeDigitContainer (const EventContext &ctx, const SG::WriteHandleKey< DigitCont > &key, OutDigitCache_t< DigitColl > &&digitCache, unsigned int hashMax) const
	Helper function to move the collected digits into the final DigitContainer. More...

Static Protected Member Functions
static double	hitTime (const TimedHit &hit)
	Returns the global time of the hit which is the sum of eventTime & individual hit time. More...
static bool	passDeadTime (const Identifier &channelId, const double hitTime, const double deadTimeWindow, DeadTimeMap &deadTimeMap)
	Returns whether the new digit is within the dead time window. More...

Protected Attributes
const MuonGMR4::MuonDetectorManager *	m_detMgr {nullptr}
ServiceHandle< Muon::IMuonIdHelperSvc >	m_idHelperSvc

Private Types
using	EdgeSide = MuonGMR4::RpcReadoutElement::EdgeSide
using	DigiCache = OutDigitCache_t< RpcDigitCollection >
using	PileUpHits = PileUpMergeSvc::TimedList< xAOD::MuonSimHitContainer >::type
using	SimHitLocalCopy = std::pair< std::unique_ptr< xAOD::MuonSimHitContainer >, std::unique_ptr< xAOD::MuonSimHitAuxContainer > >
	Create a local copy of the sim hits to ensure overlayed hits across the events remain valid. More...

Private Member Functions
bool	digitizeHit (const Identifier &gasGapId, const bool measuresPhi, const MuonGMR4::RpcReadoutElement &reEle, const double hitTime, const Amg::Vector2D &locPos, const Muon::DigitEffiData *effiMap, RpcDigitCollection &outContainer, CLHEP::HepRandomEngine *rndEngine, DeadTimeMap &deadTimes) const
	Digitize the sim hit as Rpc strip 1D hit. More...
bool	digitizeHitBI (const Identifier &gasGapId, const MuonGMR4::RpcReadoutElement &reEle, const double hitTime, const Amg::Vector2D &locPos, const Muon::DigitEffiData *effiMap, RpcDigitCollection &outContainer, CLHEP::HepRandomEngine *rndEngine, DeadTimeMap &deadTimes) const
	Digitize the sim hit as Rpc strip 2D hit. More...
StatusCode	fillTimedHits (PileUpHits &&hitColl, TimedHits &timedHits) const
	Translates the PileUpHits into the timed hits format. More...

Static Private Member Functions
static double	timeOverThreshold (CLHEP::HepRandomEngine *rndmEngine)
	Roll the time over threshold for each signal digit. More...

Private Attributes
int	m_stIdxBIL {-1}
int	m_stIdxBIS {-1}
SG::WriteHandleKey< RpcDigitContainer >	m_writeKey {this, "OutputObjectName", "RPC_DIGITS"}
SG::ReadCondHandleKey< Muon::DigitEffiData >	m_effiDataKey
std::array< std::atomic< unsigned >, 2 > m_allHits	ATLAS_THREAD_SAFE {}
std::array< std::atomic< unsigned >, 2 > m_acceptedHits	ATLAS_THREAD_SAFE {}
Gaudi::Property< double >	m_propagationVelocity
Gaudi::Property< double >	m_stripTimeResolution
Gaudi::Property< double >	m_deadTime {this, "deadTime", 100.*Gaudi::Units::nanosecond}
Gaudi::Property< bool >	m_digitizeMuonOnly
SG::ReadHandleKey< xAOD::MuonSimHitContainer >	m_simHitKey {this, "SimHitKey", ""}
SG::ReadHandleKey< ActsGeometryContext >	m_geoCtxKey
ServiceHandle< PileUpMergeSvc >	m_mergeSvc {this, "PileUpMergeSvc", "PileUpMergeSvc", ""}
Gaudi::Property< std::string >	m_streamName {this, "StreamName", ""}
ServiceHandle< IAthRNGSvc >	m_rndmSvc {this, "RndmSvc", "AthRNGSvc", ""}
SG::WriteHandleKey< xAOD::MuonSimHitContainer >	m_sdoKey {this, "OutputSDOName", ""}
Gaudi::Property< bool >	m_onlyUseContainerName
Gaudi::Property< bool >	m_includePileUpTruth {this, "IncludePileUpTruth", true, "Include pile-up truth info"}
std::string	m_inputObjectName {""}
TimedHits	m_timedHits {}
std::vector< SimHitLocalCopy >	m_simHits {}

structors and AlgTool implementation
virtual StatusCode	processAllSubEvents (const EventContext &ctx)=0
	dummy implementation to allow compilation while all Digitization packages are migrated to use this new interface. More...
virtual bool	toProcess (int bunchXing) const override
	the method this base class helps implementing More...
virtual bool	filterPassed () const override
	dummy implementation of passing filter More...
virtual void	resetFilter () override
	dummy implementation of filter reset More...
Gaudi::Property< int >	m_firstXing
Gaudi::Property< int >	m_lastXing
Gaudi::Property< int >	m_vetoPileUpTruthLinks
bool	m_filterPassed {true}

Detailed Description

Definition at line 16 of file RpcFastDigiTool.h.

Member Typedef Documentation

DeadTimeMap

using MuonR4::MuonDigitizationTool::DeadTimeMap = std::unordered_map<Identifier, double>

protectedinherited

Definition at line 129 of file MuonDigitizationTool.h.

DigiCache

using MuonR4::RpcFastDigiTool::DigiCache = OutDigitCache_t<RpcDigitCollection>

private

Definition at line 74 of file RpcFastDigiTool.h.

EdgeSide

using MuonR4::RpcFastDigiTool::EdgeSide = MuonGMR4::RpcReadoutElement::EdgeSide

private

Definition at line 29 of file RpcFastDigiTool.h.

OutDigitCache_t

template<class DetType >

using MuonR4::MuonDigitizationTool::OutDigitCache_t = std::vector<std::unique_ptr<DetType> >

protectedinherited

DigitContainers are sorted by DigitCollections which are the ensemble of all hits in a given MuonChamber.

To fill the final DigitContainer thread-safely, the DigitCollections shall be cached pre cached in a OutDigitCache_t vector which is later moved to the final DigitContainer

Definition at line 109 of file MuonDigitizationTool.h.

PileUpHits

using MuonR4::MuonDigitizationTool::PileUpHits = PileUpMergeSvc::TimedList<xAOD::MuonSimHitContainer>::type

privateinherited

Definition at line 145 of file MuonDigitizationTool.h.

SimHitLocalCopy

using MuonR4::MuonDigitizationTool::SimHitLocalCopy = std::pair<std::unique_ptr<xAOD::MuonSimHitContainer>, std::unique_ptr<xAOD::MuonSimHitAuxContainer> >

privateinherited

Create a local copy of the sim hits to ensure overlayed hits across the events remain valid.

Definition at line 172 of file MuonDigitizationTool.h.

TimedHit

using MuonR4::MuonDigitizationTool::TimedHit = TimedHitPtr<xAOD::MuonSimHit>

protectedinherited

Definition at line 70 of file MuonDigitizationTool.h.

TimedHits

using MuonR4::MuonDigitizationTool::TimedHits = std::vector<TimedHitPtr<xAOD::MuonSimHit> >

protectedinherited

Definition at line 71 of file MuonDigitizationTool.h.

Constructor & Destructor Documentation

RpcFastDigiTool()

MuonR4::RpcFastDigiTool::RpcFastDigiTool	(	const std::string &	type,
		const std::string &	name,
		const IInterface *	pIID
	)

Definition at line 17 of file RpcFastDigiTool.cxx.

                                                                                                        :
        MuonDigitizationTool{type,name, pIID} {}

Member Function Documentation

addSDO()

xAOD::MuonSimHit * MuonR4::MuonDigitizationTool::addSDO ( const TimedHit &  hit, xAOD::MuonSimHitContainer *  sdoContainer  ) const

protectedinherited

Adds the timed simHit to the output SDO container.

The hit may be rejected if it's originating from pile-up and the pile-up truth skimming strategy is applied

Definition at line 148 of file MuonDigitizationTool.cxx.

                                                                                                {
        if(!sdoContainer) {
            ATH_MSG_VERBOSE("No SDO container setup of writing");
            return nullptr;
        }
        if (!m_includePileUpTruth && HepMC::ignoreTruthLink(hit->genParticleLink(), m_vetoPileUpTruthLinks)) { 
            ATH_MSG_VERBOSE("Hit "<<m_idHelperSvc->toString(hit->identify())<<" is a pile-up truth link");
            return nullptr; 
        }
        
        xAOD::MuonSimHit* sdoHit = sdoContainer->push_back(std::make_unique<xAOD::MuonSimHit>());
        (*sdoHit) = (*hit);
        static const SG::Accessor<float> acc_eventTime{"MuSim_evtTime"};
        static const SG::Accessor<unsigned short> acc_eventID{"MuSim_evtID"};
        static const SG::Accessor<unsigned short> acc_puType{"MuSim_puType"};
        acc_eventTime(*sdoHit) = hit.eventTime();
        acc_eventID(*sdoHit) = hit.eventId();
        acc_puType(*sdoHit) = hit.pileupType();
        return sdoHit;
    }

digitize()

StatusCode MuonR4::RpcFastDigiTool::digitize ( const EventContext &  ctx, const TimedHits &  hitsToDigit, xAOD::MuonSimHitContainer *  sdoContainer  ) const

finaloverrideprotectedvirtual

Digitize the time ordered hits and write them to the digit format specific for the detector technology.

A new MuonSimHitContainer pointer is parsed to also create the MuonSDO. If a new SDO should be added to the container plese use the addSDO() method as defined below.

Fetch the conditions for efficiency calculations

Standard digitization path

We need to rotate the local frame in order to be consistent with the Identifier

Write everything at the end into the final digit container

Implements MuonR4::MuonDigitizationTool.

Definition at line 34 of file RpcFastDigiTool.cxx.

                                                                                      {
        const RpcIdHelper& idHelper{m_idHelperSvc->rpcIdHelper()};
        // Prepare the temporary cache
        DigiCache digitCache{};
        const Muon::DigitEffiData* efficiencyMap{nullptr};
        ATH_CHECK(retrieveConditions(ctx, m_effiDataKey, efficiencyMap));
 
        CLHEP::HepRandomEngine* rndEngine = getRandomEngine(ctx);
        xAOD::ChamberViewer viewer{hitsToDigit, m_idHelperSvc.get()};
        do {
            DeadTimeMap deadTimes{};
            for (const TimedHit& simHit : viewer) {
                if (m_digitizeMuonOnly && std::abs(simHit->pdgId()) != 13){
                    continue;
                }
                const Identifier hitId{simHit->identify()};
 
                const MuonGMR4::RpcReadoutElement* readOutEle = m_detMgr->getRpcReadoutElement(hitId);
                const Amg::Vector3D locPos{xAOD::toEigen(simHit->localPosition())};
                RpcDigitCollection* digiColl = fetchCollection(hitId, digitCache);
        bool run4_BIS = ((m_idHelperSvc->stationName(hitId) == m_stIdxBIS) && (abs(m_idHelperSvc->stationEta(hitId)) < 7));
            if ((m_idHelperSvc->stationName(hitId) != m_stIdxBIL) && !(run4_BIS)) {
                    const bool digitizedEta = digitizeHit(hitId, false, *readOutEle, 
                                                          hitTime(simHit), locPos.block<2,1>(0,0), 
                                                          efficiencyMap, *digiColl, rndEngine, deadTimes);
 
                    const bool digitizedPhi = digitizeHit(hitId, true, *readOutEle, hitTime(simHit),
                                                          etaToPhi*locPos.block<2,1>(0,0),
                                                          efficiencyMap, *digiColl, rndEngine, deadTimes);
                    if (digitizedEta) {
                        xAOD::MuonSimHit* sdo = addSDO(simHit, sdoContainer);
                        const Identifier digitId{(*digiColl)[digiColl->size() -1 - digitizedPhi]->identify()};
                        sdo->setIdentifier(digitId);
                    } else if (digitizedPhi) {
                        xAOD::MuonSimHit* sdo = addSDO(simHit, sdoContainer);
                        Amg::Vector3D phiPos{locPos};
                        phiPos.block<2,1>(0,0) = etaToPhi * phiPos.block<2,1>(0,0);
                        Amg::Vector3D locDir{xAOD::toEigen(simHit->localDirection())};
                        locDir.block<2,1>(0,0) = etaToPhi * locDir.block<2,1>(0,0);
                        const Identifier digitId{(*digiColl)[digiColl->size() -1]->identify()};
                        sdo->setIdentifier(digitId);
                        sdo->setLocalDirection(xAOD::toStorage(locDir));
                        sdo->setLocalPosition(xAOD::toStorage(phiPos));
                    }
                } else if (digitizeHitBI(hitId, *readOutEle, hitTime(simHit), locPos.block<2,1>(0,0),
                           efficiencyMap, *digiColl, rndEngine, deadTimes)) {
                    xAOD::MuonSimHit* sdo = addSDO(simHit, sdoContainer);
                    const Identifier digitId{(*digiColl)[digiColl->size() -1]->identify()};
                    sdo->setIdentifier(digitId);
                }
            }
        } while (viewer.next());
        ATH_CHECK(writeDigitContainer(ctx, m_writeKey, std::move(digitCache), idHelper.module_hash_max()));
        return StatusCode::SUCCESS;
    }   

digitizeHit()

bool MuonR4::RpcFastDigiTool::digitizeHit ( const Identifier &  gasGapId, const bool  measuresPhi, const MuonGMR4::RpcReadoutElement &  reEle, const double  hitTime, const Amg::Vector2D &  locPos, const Muon::DigitEffiData *  effiMap, RpcDigitCollection &  outContainer, CLHEP::HepRandomEngine *  rndEngine, DeadTimeMap &  deadTimes  ) const

private

Digitize the sim hit as Rpc strip 1D hit.

Parameters

gasGapId	Identifier of the associated gasGap
measuresPhi	Process a phi or an eta strip
designPtr	Pointer to the striplayout of the gasGap
hitTime	Global time of the hit
locPosOnStrip	Local position of the hit perpendicular to the strip plane
effiMap	Pointer to an efficiency look-up table
outContainer	DigitCollection to push the new digit into
rndEngine	Random engine used for smearing
deadTimes	Reference to the last digitized times in order to apply the dead time model

Final check whether the digit is actually efficient

Correct for the signal propagation time

Definition at line 95 of file RpcFastDigiTool.cxx.

                                                                    {
 
        ++(m_allHits[measuresPhi]);
        const MuonGMR4::StripDesign& design{measuresPhi ? *reEle.getParameters().phiDesign
                                                        : *reEle.getParameters().etaDesign};
 
        const double uncert = design.stripPitch() / std::sqrt(12.);
        const double smearedX = CLHEP::RandGaussZiggurat::shoot(rndEngine, locPos.x(), uncert);
        const Amg::Vector2D locHitPos{smearedX, locPos.y()};
 
        if (!design.insideTrapezoid(locHitPos)) {
            ATH_MSG_VERBOSE("The hit "<<Amg::toString(locHitPos)<<" is outside of the trapezoid bounds for "
                            <<m_idHelperSvc->toStringGasGap(gasGapId)<<", measuresPhi: "<<(measuresPhi ? "yay" : "nay"));
            return false;
        }
        const int strip = design.stripNumber(locHitPos);
        if (strip < 0) {
            ATH_MSG_VERBOSE("Hit " << Amg::toString(locHitPos) << " cannot trigger any signal in a strip for "
                            << m_idHelperSvc->toStringGasGap(gasGapId) <<std::endl<<design<<
                            std::endl<<", measuresPhi: "<<(measuresPhi ? "yay" : "nay"));
            return false;
        }
 
        const RpcIdHelper& id_helper{m_idHelperSvc->rpcIdHelper()};
 
        bool isValid{false};
        const Identifier digitId{id_helper.channelID(gasGapId, 
                                                     id_helper.doubletZ(gasGapId), 
                                                     id_helper.doubletPhi(gasGapId), 
                                                     id_helper.gasGap(gasGapId),
                                                     measuresPhi, strip, isValid)};
 
        if (!isValid) {
            ATH_MSG_WARNING("Invalid hit identifier obtained for "<<m_idHelperSvc->toStringGasGap(gasGapId)
                            <<",  eta strip "<<strip<<" & hit "<<Amg::toString(locHitPos,2 )
                            <<" /// "<<design);
            return false;
        }
        if (effiMap && effiMap->getEfficiency(digitId) < CLHEP::RandFlat::shoot(rndEngine,0.,1.)) {
            ATH_MSG_VERBOSE("Hit is marked as inefficient");
            return false;            
        }
        
        if (!passDeadTime(digitId, hitTime, m_deadTime, deadTimes)) {
            ATH_MSG_VERBOSE("Reject hit due to dead map constraint");
            return false;
        }
        const double signalTime = hitTime + reEle.distanceToEdge(reEle.measurementHash(digitId),
                                                                 locHitPos, EdgeSide::readOut) / m_propagationVelocity;
        const double digitTime = CLHEP::RandGaussZiggurat::shoot(rndEngine, signalTime, m_stripTimeResolution);
        outContainer.push_back(std::make_unique<RpcDigit>(digitId, digitTime, timeOverThreshold(rndEngine)));
        ++(m_acceptedHits[measuresPhi]);
        return true;
    }

digitizeHitBI()

bool MuonR4::RpcFastDigiTool::digitizeHitBI ( const Identifier &  gasGapId, const MuonGMR4::RpcReadoutElement &  reEle, const double  hitTime, const Amg::Vector2D &  locPos, const Muon::DigitEffiData *  effiMap, RpcDigitCollection &  outContainer, CLHEP::HepRandomEngine *  rndEngine, DeadTimeMap &  deadTimes  ) const

private

Digitize the sim hit as Rpc strip 2D hit.

Parameters

gasGapId	Identifier of the associated gasGap
designPtr	Pointer to the striplayout of the gasGap
hitTime	Global time of the hit
locPos	Local position of the hit inside the strip plane
effiMap	Pointer to an efficiency look-up table
outContainer	DigitCollection to push the new digit into
rndEngine	Random engine used for smearing
deadTimes	Reference to the last digitized times in order to apply the dead time model

Smeared x coordinate

Smear the Phi Coordinate

Smeared propagation time in nanoseconds along strip to y=-stripLength/2 (L) and y=stripLength/2 (R)

Check whether the digit is actually efficient

Definition at line 159 of file RpcFastDigiTool.cxx.

                                                                      {
        
        ++(m_allHits[false]);
        const MuonGMR4::StripDesign& design{*reEle.getParameters().etaDesign};
        const RpcIdHelper& id_helper{m_idHelperSvc->rpcIdHelper()};
 
 
        const double uncert = design.stripPitch() / std::sqrt(12.);
        const double smearedX = CLHEP::RandGaussZiggurat::shoot(rndEngine, locPos.x(), uncert);
 
        // True propagation time in nanoseconds along strip to y=-stripLength/2 (L) and y=stripLength/2 (R)
        const IdentifierHash layHash = reEle.layerHash(gasGapId);
        const double propagationTimeL = reEle.distanceToEdge(layHash, locPos, EdgeSide::readOut)    / m_propagationVelocity; 
        const double propagationTimeR = reEle.distanceToEdge(layHash, locPos, EdgeSide::highVoltage)/ m_propagationVelocity; 
 
        const double smearedTimeL = CLHEP::RandGaussZiggurat::shoot(rndEngine, propagationTimeL, m_stripTimeResolution); 
        const double smearedTimeR = CLHEP::RandGaussZiggurat::shoot(rndEngine, propagationTimeR, m_stripTimeResolution);     
        
        const double smearedDeltaT = smearedTimeR - smearedTimeL;
 
        /*
            |--- d1, t1 ---||--- d1, t1 ---||-- d --|                      For t2 > t1: 
            ||||||||||||||||X|||||||||||||||||||||||| <- RPC strip,            deltaT = t2 - t1,  d1 = v_prop * t1 (likewise for d2), 
                        |-------- d2, t2 -------|    X is a hit             l = d1 + d2, d = d2 - d1 -> d = l - 2d1 = v_prop * deltaT                         
            |----------------- l -------------------|
                                                    Hence, d1 = 0.5 * (l - d) = 0.5 * (l - v_prop * deltaT)
 
            Then converting to coordinate system where  0 -> -0.5*l to match strip local coordinates
                                            d1 -> d1 = -0.5*l + 0.5* (l-d) = -0.5*d = -0.5 * v_pro*deltaT
        */
        const double smearedY =  -0.5 * m_propagationVelocity * smearedDeltaT; //in mm
        //If smearedDeltaT == 0 position is in the centre of the strip (0).
 
        const Amg::Vector2D locHitPos{smearedX, smearedY};
 
        if (!design.insideTrapezoid(locHitPos)) {
            ATH_MSG_VERBOSE("The hit "<<Amg::toString(locHitPos)<<" is outside of the trapezoid bounds for "
                            <<m_idHelperSvc->toStringGasGap(gasGapId));
            return false;
        }
 
        const int strip = design.stripNumber(locHitPos);
        if (strip < 0) {
            ATH_MSG_VERBOSE("Hit " << Amg::toString(locHitPos) << " cannot trigger any signal in a strip for "
                            << m_idHelperSvc->toStringGasGap(gasGapId) <<std::endl<<design);
            return false;
        }
 
 
        bool isValid{false};
        const Identifier digitId{id_helper.channelID(gasGapId, 
                                                     id_helper.doubletZ(gasGapId), 
                                                     id_helper.doubletPhi(gasGapId), 
                                                     id_helper.gasGap(gasGapId),
                                                     false, strip, isValid)};
        if (!isValid) {
            ATH_MSG_WARNING("Failed to create a valid strip "<<m_idHelperSvc->toStringGasGap(gasGapId)
                          <<", strip: "<<strip);
            return false;
        }
        if (!passDeadTime(digitId, hitTime, m_deadTime, deadTimes)) {
            ATH_MSG_VERBOSE("Reject hit due to dead map constraint");
            return false;
        }
        ATH_MSG_VERBOSE("Digitize hit "<<m_idHelperSvc->toString(digitId)<<" located at: "<<Amg::toString(locHitPos));
        const bool effiSignal1 = !effiMap ||  effiMap->getEfficiency(gasGapId) >= CLHEP::RandFlat::shoot(rndEngine,0., 1.);
        const bool effiSignal2 = !effiMap ||  effiMap->getEfficiency(gasGapId) >= CLHEP::RandFlat::shoot(rndEngine,0., 1.);
        if (effiSignal1) {
            outContainer.push_back(std::make_unique<RpcDigit>(digitId, hitTime + smearedTimeR, timeOverThreshold(rndEngine)));
        }
        if (effiSignal2) {
            outContainer.push_back(std::make_unique<RpcDigit>(digitId, hitTime + smearedTimeL, timeOverThreshold(rndEngine), true));
        }
        if (effiSignal1 || effiSignal2) {
            ++(m_acceptedHits[false]);
            return true;
        }
        return false;
    }

fetchCollection()

template<class DigitColl >

DigitColl* MuonR4::MuonDigitizationTool::fetchCollection ( const Identifier &  hitId, OutDigitCache_t< DigitColl > &  digitCache  ) const

protectedinherited

Helper function that provides fetches the proper DigitCollection from the DigitCache for a given hit identifier If the Collection is fetched for the first time, it's inserted into the cache first.

fillTimedHits()

StatusCode MuonR4::MuonDigitizationTool::fillTimedHits ( PileUpHits &&  hitColl, TimedHits &  timedHits  ) const

privateinherited

Translates the PileUpHits into the timed hits format.

Definition at line 50 of file MuonDigitizationTool.cxx.

                                                                                                   {
        for (const auto& [timeIndex, simHitColl] : hitColl) {
            timedHits.reserve(timedHits.capacity() + simHitColl->size());
            for (const xAOD::MuonSimHit* simHit : *simHitColl) {
                timedHits.emplace_back(timeIndex.time(), timeIndex.index(), simHit, timeIndex.type());
            }           
        }
        std::sort(timedHits.begin(), timedHits.end(), 
                 [](const TimedHit& a, const TimedHit& b){
                    if (a->identify() != b->identify()){
                        return a->identify() < b->identify();
                    }
                    if (a.eventId() != b.eventId()) {
                       return a.eventId() < b.eventId();
                    } 
                    return a.eventTime() < b.eventTime(); 
                }); 
        return StatusCode::SUCCESS;
    }

filterPassed()

virtual bool PileUpToolBase::filterPassed ( ) const

inlineoverridevirtualinherited

dummy implementation of passing filter

Definition at line 49 of file PileUpToolBase.h.

{ return m_filterPassed; }

finalize()

StatusCode MuonR4::RpcFastDigiTool::finalize ( )

finaloverride

Definition at line 28 of file RpcFastDigiTool.cxx.

                                         {
        ATH_MSG_INFO("Tried to convert "<<m_allHits[0]<<"/"<<m_allHits[1]<<" hits. In, "
                    <<percentage(m_acceptedHits[0], m_allHits[0]) <<"/"
                    <<percentage(m_acceptedHits[1], m_allHits[1]) <<"% of the cases, the conversion was successful");
        return StatusCode::SUCCESS;
    }

getGeoCtx()

const ActsGeometryContext & MuonR4::MuonDigitizationTool::getGeoCtx ( const EventContext &  ctx ) const

protectedinherited

Returns the reference to the ActsGeometryContext needed to fetch global positions from the Readout geometry.

Definition at line 141 of file MuonDigitizationTool.cxx.

                                                                                            {
        const ActsGeometryContext* gctx{};
        if (!retrieveContainer(ctx, m_geoCtxKey, gctx).isSuccess()) {
            THROW_EXCEPTION("Failed to retrieve the geometry context "<<m_geoCtxKey.fullKey());
        }
        return *gctx;
    }

getRandomEngine()

CLHEP::HepRandomEngine * MuonR4::MuonDigitizationTool::getRandomEngine ( const EventContext &  ctx ) const

protectedinherited

Definition at line 135 of file MuonDigitizationTool.cxx.

                                                                                            {
        ATHRNG::RNGWrapper* rngWrapper = m_rndmSvc->getEngine(this, m_streamName);
        std::string rngName = m_streamName;
        rngWrapper->setSeed(rngName, ctx);
        return rngWrapper->getEngine(ctx);
    }

hitTime()

double MuonR4::MuonDigitizationTool::hitTime ( const TimedHit &  hit )

staticprotectedinherited

Returns the global time of the hit which is the sum of eventTime & individual hit time.

Definition at line 69 of file MuonDigitizationTool.cxx.

                                                            {
        return hit.eventTime() + hit->globalTime();
    }

initialize()

StatusCode MuonR4::RpcFastDigiTool::initialize ( )

finaloverridevirtual

Reimplemented from MuonR4::MuonDigitizationTool.

Definition at line 20 of file RpcFastDigiTool.cxx.

                                           {
        ATH_CHECK(MuonDigitizationTool::initialize());
        ATH_CHECK(m_writeKey.initialize());
        ATH_CHECK(m_effiDataKey.initialize(!m_effiDataKey.empty()));
        m_stIdxBIL = m_idHelperSvc->rpcIdHelper().stationNameIndex("BIL");
    m_stIdxBIS = m_idHelperSvc->rpcIdHelper().stationNameIndex("BIS");
        return StatusCode::SUCCESS;
    }

mergeEvent()

StatusCode MuonR4::MuonDigitizationTool::mergeEvent ( const EventContext &  ctx )

finaloverrideinherited

Definition at line 98 of file MuonDigitizationTool.cxx.

                                                                       {
        ATH_MSG_DEBUG("mergeEvent()");
        
        SG::WriteHandle<xAOD::MuonSimHitContainer> sdoContainer{};
        if (!m_sdoKey.empty()) {
             sdoContainer = SG::WriteHandle<xAOD::MuonSimHitContainer>{m_sdoKey, ctx};
             ATH_CHECK(sdoContainer.record(std::make_unique<xAOD::MuonSimHitContainer>(),
                                           std::make_unique<xAOD::MuonSimHitAuxContainer>()));
        }
        ATH_CHECK(digitize(ctx, m_timedHits, !m_sdoKey.empty() ? sdoContainer.ptr() : nullptr));
        m_timedHits.clear();
        m_simHits.clear();
        return StatusCode::SUCCESS;
    }

passDeadTime()

bool MuonR4::MuonDigitizationTool::passDeadTime ( const Identifier &  channelId, const double  hitTime, const double  deadTimeWindow, DeadTimeMap &  deadTimeMap  )

staticprotectedinherited

Returns whether the new digit is within the dead time window.

channelId: Identifier of the fired channel

hitTime: Current hit time

deadTimeWindow: Dead time to pass before the next hit may be accepted

deadTimeMap: Map storing the last hit times from each Identifier

Channel not seen before

Update dead time map & accept hit

Definition at line 169 of file MuonDigitizationTool.cxx.

                                                                      {
        auto insertItr = deadTimeMap.insert(std::make_pair(channelId,hitTime));
        if (insertItr.second) {
            return true;
        }
        if (hitTime - insertItr.first->second < deadTimeWindow) {
            return false;
        }
        insertItr.first->second = hitTime;
        return true;
    }

prepareEvent()

StatusCode MuonR4::MuonDigitizationTool::prepareEvent ( const EventContext &  ctx, const unsigned int  nInputEvents  )

finaloverrideinherited

When being run from PileUpToolsAlgs, this method is called at the start of the subevts loop.

Not able to access SubEvents

Definition at line 41 of file MuonDigitizationTool.cxx.

                                                                             {
 
        ATH_MSG_DEBUG("prepareEvent() called for " << nInputEvents << " input events");
        m_timedHits.clear();
        m_simHits.clear();
        return StatusCode::SUCCESS;
    }

processAllSubEvents() [1/3]

StatusCode MuonR4::MuonDigitizationTool::processAllSubEvents ( const EventContext &  ctx ) const

inherited

Reentrant version of the digitization tool.

In case of single hits container just load the collection using read handles

Definition at line 77 of file MuonDigitizationTool.cxx.

                                                                                      {
        PileUpHits hitCollList{};
        TimedHits timedHits{};
        if (!m_onlyUseContainerName) {            
            const xAOD::MuonSimHitContainer* hitCollection{nullptr};
            ATH_CHECK(retrieveContainer(ctx, m_simHitKey, hitCollection));
            hitCollList.emplace_back(PileUpTimeEventIndex(0), hitCollection);
         } else {
            ATH_CHECK(m_mergeSvc->retrieveSubEvtsData(m_inputObjectName, hitCollList));
        }
        ATH_CHECK(fillTimedHits(std::move(hitCollList), timedHits));
        SG::WriteHandle<xAOD::MuonSimHitContainer> sdoContainer{};
        if (!m_sdoKey.empty()) {
             sdoContainer = SG::WriteHandle<xAOD::MuonSimHitContainer>{m_sdoKey, ctx};
             ATH_CHECK(sdoContainer.record(std::make_unique<xAOD::MuonSimHitContainer>(),
                                           std::make_unique<xAOD::MuonSimHitAuxContainer>()));
        }
        ATH_CHECK(digitize(ctx, timedHits, !m_sdoKey.empty() ? sdoContainer.ptr() : nullptr));
        return StatusCode::SUCCESS;
    }

processAllSubEvents() [2/3]

StatusCode MuonR4::MuonDigitizationTool::processAllSubEvents ( const EventContext &  ctx )

finaloverridevirtualinherited

alternative interface which uses the PileUpMergeSvc to obtain all the required SubEvents.

Reimplemented from PileUpToolBase.

Definition at line 72 of file MuonDigitizationTool.cxx.

                                                                                {
        const MuonDigitizationTool* digiTool = this;
        return digiTool->processAllSubEvents(ctx);
    }

processAllSubEvents() [3/3]

virtual StatusCode IPileUpTool::processAllSubEvents

inherited

dummy implementation to allow compilation while all Digitization packages are migrated to use this new interface.

processBunchXing()

StatusCode MuonR4::MuonDigitizationTool::processBunchXing ( int  bunchXing, SubEventIterator  bSubEvents, SubEventIterator  eSubEvents  )

finaloverridevirtualinherited

Reimplemented from PileUpToolBase.

Definition at line 114 of file MuonDigitizationTool.cxx.

                                                                                   {        
        ATH_MSG_DEBUG("processBunchXing()" << bunchXing);
        PileUpHits hitList{}, hitListPermanent{};
        ATH_CHECK(m_mergeSvc->retrieveSubSetEvtData(m_inputObjectName, hitList, bunchXing, bSubEvents, eSubEvents));
        ATH_MSG_VERBOSE(hitList.size() << " hits in  xAODMuonSimHitContainer " << m_inputObjectName << " found");
        for (auto& [hitPtr, hitContainer] : hitList) {
            auto copyContainer = std::make_unique<xAOD::MuonSimHitContainer>();
            auto copyAuxContainer = std::make_unique<xAOD::MuonSimHitAuxContainer>();
            copyContainer->setStore(copyAuxContainer.get());
            for (const xAOD::MuonSimHit* copyMe : *hitContainer) {
               (*copyContainer->push_back(std::make_unique<xAOD::MuonSimHit>())) = (*copyMe);
            }
            hitListPermanent.emplace_back(hitPtr, copyContainer.get());
            m_simHits.emplace_back(std::move(copyContainer), std::move(copyAuxContainer));
        } 
        ATH_CHECK(fillTimedHits(std::move(hitListPermanent), m_timedHits));
        return StatusCode::SUCCESS;
    }

resetFilter()

virtual void PileUpToolBase::resetFilter ( )

inlineoverridevirtualinherited

dummy implementation of filter reset

Reimplemented in MergeTruthJetsTool.

Definition at line 51 of file PileUpToolBase.h.

{ m_filterPassed=true; }

retrieveConditions()

template<class Container >

StatusCode MuonR4::MuonDigitizationTool::retrieveConditions ( const EventContext &  ctx, const SG::ReadCondHandleKey< Container > &  key, const Container *&  contPtr  ) const

protectedinherited

Helper function to access the conditions data.

If the key is empty, the conditions object is assigned to be a nullptr Otherwise, a failure is returned if the Conditions data are not available in the event.

retrieveContainer()

template<class Container >

StatusCode MuonR4::MuonDigitizationTool::retrieveContainer ( const EventContext &  ctx, const SG::ReadHandleKey< Container > &  key, const Container *&  contPtr  ) const

protectedinherited

Helper function to retrieve a container from StoreGate.

If the readHandleKey is empty, the container is assigned to be a nullptr and the operation is marked as success. Otherwise, a failure is returned if the Container cannot be fetched from StoreGate

timeOverThreshold()

double MuonR4::RpcFastDigiTool::timeOverThreshold ( CLHEP::HepRandomEngine *  rndmEngine )

staticprivate

Roll the time over threshold for each signal digit.

Definition at line 249 of file RpcFastDigiTool.cxx.

                                                                              {
        //mn Time-over-threshold modeled as a narrow and a wide gaussian
        //mn based on the fit documented in https://its.cern.ch/jira/browse/ATLASRECTS-7820
        constexpr double tot_mean_narrow = 16.;
        constexpr double tot_sigma_narrow = 2.;
        constexpr double tot_mean_wide = 15.;
        constexpr double tot_sigma_wide = 4.5;
 
        double thetot = 0.;
 
        if (CLHEP::RandFlat::shoot(rndmEngine)<0.75) {
          thetot = CLHEP::RandGaussZiggurat::shoot(rndmEngine, tot_mean_narrow, tot_sigma_narrow);
        } else {
          thetot = CLHEP::RandGaussZiggurat::shoot(rndmEngine, tot_mean_wide, tot_sigma_wide);
        }
 
        return std::max(thetot, 0.);
    }

toProcess()

virtual bool PileUpToolBase::toProcess ( int  bunchXing ) const

inlineoverridevirtualinherited

the method this base class helps implementing

Reimplemented in MergeHijingParsTool, and MergeTrackRecordCollTool.

Definition at line 32 of file PileUpToolBase.h.

                                                       {
    //closed interval [m_firstXing,m_lastXing]
    return !((m_firstXing > bunchXing) || (bunchXing > m_lastXing));
  }

writeDigitContainer()

template<class DigitCont , class DigitColl >

StatusCode MuonR4::MuonDigitizationTool::writeDigitContainer ( const EventContext &  ctx, const SG::WriteHandleKey< DigitCont > &  key, OutDigitCache_t< DigitColl > &&  digitCache, unsigned int  hashMax  ) const

protectedinherited

Helper function to move the collected digits into the final DigitContainer.

The function needs the maximal size of the container in advance which is provided by calling the module_hash_max() function of the corresponding MuonIdHelper.

Member Data Documentation

ATLAS_THREAD_SAFE [1/2]

std::array<std::atomic<unsigned>, 2> m_allHits MuonR4::RpcFastDigiTool::ATLAS_THREAD_SAFE {}

mutableprivate

Definition at line 80 of file RpcFastDigiTool.h.

ATLAS_THREAD_SAFE [2/2]

std::array<std::atomic<unsigned>, 2> m_acceptedHits MuonR4::RpcFastDigiTool::ATLAS_THREAD_SAFE {}

mutableprivate

Definition at line 81 of file RpcFastDigiTool.h.

m_deadTime

Gaudi::Property<double> MuonR4::RpcFastDigiTool::m_deadTime {this, "deadTime", 100.*Gaudi::Units::nanosecond}

private

Definition at line 89 of file RpcFastDigiTool.h.

m_detMgr

const MuonGMR4::MuonDetectorManager* MuonR4::MuonDigitizationTool::m_detMgr {nullptr}

protectedinherited

Definition at line 140 of file MuonDigitizationTool.h.

m_digitizeMuonOnly

Gaudi::Property<bool> MuonR4::RpcFastDigiTool::m_digitizeMuonOnly

private

Initial value:

{this, "ProcessTrueMuonsOnly", false, 
                                                     "If set to true hit with pdgId != 13 are skipped"}

Definition at line 91 of file RpcFastDigiTool.h.

m_effiDataKey

SG::ReadCondHandleKey<Muon::DigitEffiData> MuonR4::RpcFastDigiTool::m_effiDataKey

private

Initial value:

{this, "EffiDataKey", "RpcDigitEff",
                                                                    "Efficiency constants of the individual Rpc gasGaps"}

Definition at line 77 of file RpcFastDigiTool.h.

m_filterPassed

bool PileUpToolBase::m_filterPassed {true}

protectedinherited

Definition at line 60 of file PileUpToolBase.h.

m_firstXing

Gaudi::Property<int> PileUpToolBase::m_firstXing

protectedinherited

Initial value:

{this, "FirstXing", -999,
      "First bunch-crossing in which det is live"}

Definition at line 54 of file PileUpToolBase.h.

m_geoCtxKey

SG::ReadHandleKey<ActsGeometryContext> MuonR4::MuonDigitizationTool::m_geoCtxKey

privateinherited

Initial value:

{this, "AlignmentKey", "ActsAlignment", 
                                                               "Geometry context"}

Definition at line 152 of file MuonDigitizationTool.h.

m_idHelperSvc

ServiceHandle<Muon::IMuonIdHelperSvc> MuonR4::MuonDigitizationTool::m_idHelperSvc

protectedinherited

Initial value:

{this, "MuonIdHelperSvc", 
                                                                "Muon::MuonIdHelperSvc/MuonIdHelperSvc"}

Definition at line 142 of file MuonDigitizationTool.h.

m_includePileUpTruth

Gaudi::Property<bool> MuonR4::MuonDigitizationTool::m_includePileUpTruth {this, "IncludePileUpTruth", true, "Include pile-up truth info"}

privateinherited

Definition at line 166 of file MuonDigitizationTool.h.

m_inputObjectName

std::string MuonR4::MuonDigitizationTool::m_inputObjectName {""}

privateinherited

Definition at line 168 of file MuonDigitizationTool.h.

m_lastXing

Gaudi::Property<int> PileUpToolBase::m_lastXing

protectedinherited

Initial value:

{this, "LastXing", 999,
      "Last bunch-crossing in which det is live"}

Definition at line 56 of file PileUpToolBase.h.

m_mergeSvc

ServiceHandle<PileUpMergeSvc> MuonR4::MuonDigitizationTool::m_mergeSvc {this, "PileUpMergeSvc", "PileUpMergeSvc", ""}

privateinherited

Definition at line 155 of file MuonDigitizationTool.h.

m_onlyUseContainerName

Gaudi::Property<bool> MuonR4::MuonDigitizationTool::m_onlyUseContainerName

privateinherited

Initial value:

{this, "OnlyUseContainerName", false,
                                                         "Don't use the ReadHandleKey directly. Just extract the container name from it."}

Definition at line 163 of file MuonDigitizationTool.h.

m_propagationVelocity

Gaudi::Property<double> MuonR4::RpcFastDigiTool::m_propagationVelocity

private

Initial value:

{this, "propSpeed", 0.5 * Gaudi::Units::c_light,
                                                         "Propagation speed of the signal inside the strip"}

Definition at line 83 of file RpcFastDigiTool.h.

m_rndmSvc

ServiceHandle<IAthRNGSvc> MuonR4::MuonDigitizationTool::m_rndmSvc {this, "RndmSvc", "AthRNGSvc", ""}

privateinherited

Definition at line 159 of file MuonDigitizationTool.h.

m_sdoKey

SG::WriteHandleKey<xAOD::MuonSimHitContainer> MuonR4::MuonDigitizationTool::m_sdoKey {this, "OutputSDOName", ""}

privateinherited

Definition at line 161 of file MuonDigitizationTool.h.

m_simHitKey

SG::ReadHandleKey<xAOD::MuonSimHitContainer> MuonR4::MuonDigitizationTool::m_simHitKey {this, "SimHitKey", ""}

privateinherited

Definition at line 150 of file MuonDigitizationTool.h.

m_simHits

std::vector<SimHitLocalCopy> MuonR4::MuonDigitizationTool::m_simHits {}

privateinherited

Definition at line 174 of file MuonDigitizationTool.h.

m_stIdxBIL

int MuonR4::RpcFastDigiTool::m_stIdxBIL {-1}

private

Definition at line 30 of file RpcFastDigiTool.h.

m_stIdxBIS

int MuonR4::RpcFastDigiTool::m_stIdxBIS {-1}

private

Definition at line 31 of file RpcFastDigiTool.h.

m_streamName

Gaudi::Property<std::string> MuonR4::MuonDigitizationTool::m_streamName {this, "StreamName", ""}

privateinherited

Definition at line 157 of file MuonDigitizationTool.h.

m_stripTimeResolution

Gaudi::Property<double> MuonR4::RpcFastDigiTool::m_stripTimeResolution

private

Initial value:

{this, "timeResolution", 0.6 * Gaudi::Units::nanosecond,
                                                          "Estimated time resolution of the strip readout"}

Definition at line 86 of file RpcFastDigiTool.h.

m_timedHits

TimedHits MuonR4::MuonDigitizationTool::m_timedHits {}

privateinherited

Definition at line 170 of file MuonDigitizationTool.h.

m_vetoPileUpTruthLinks

Gaudi::Property<int> PileUpToolBase::m_vetoPileUpTruthLinks

protectedinherited

Initial value:

{this, "VetoPileUpTruthLinks", true,
      "Ignore links to suppressed pile-up truth"}

Definition at line 58 of file PileUpToolBase.h.

m_writeKey

SG::WriteHandleKey<RpcDigitContainer> MuonR4::RpcFastDigiTool::m_writeKey {this, "OutputObjectName", "RPC_DIGITS"}

private

Definition at line 75 of file RpcFastDigiTool.h.

---

The documentation for this class was generated from the following files:

• RpcFastDigiTool.h
• RpcFastDigiTool.cxx