GE0TriggerPseudoBuilder Class Reference

#include <GE0TriggerPseudoBuilder.h>

Public Types
enum	trig_me0s { trig_me0s::MAX_ENDCAPS = 2, trig_me0s::MAX_CHAMBERS = 18 }

Public Member Functions
void	build (const GEMSegmentCollection &me0segments, GE0TriggerDigiCollection &oc_trig)
void	dumpAllME0Segments (const GEMSegmentCollection &segments) const
	GE0TriggerPseudoBuilder (const edm::ParameterSet &)
void	setME0Geometry (const GEMGeometry *g)
	~GE0TriggerPseudoBuilder ()

Private Member Functions
ME0TriggerDigi	segmentConversion (const GEMSegment segment)

Private Attributes
edm::ParameterSet	config_
double	dphiresolution_
int	info_
const GEMGeometry *	me0_g

Static Private Attributes
static const int	max_chamber
static const int	max_endcap
static const unsigned int	ME0KeyLayer = 3
static const int	ME0TriggerCentralBX = 8
static const int	min_chamber
static const int	min_endcap

Detailed Description

Builds GE0 trigger objects from GE0 segment

Author

Original ME0 code by Tao Huang (TAMU). Converted and updated to GE0 by Ian J. Watson (USeoul)

Definition at line 20 of file GE0TriggerPseudoBuilder.h.

Member Enumeration Documentation

trig_me0s

enum GE0TriggerPseudoBuilder::trig_me0s

strong

Max values of trigger labels for all ME0s; used to construct TMB processors.

Enumerator
MAX_ENDCAPS
MAX_CHAMBERS

Definition at line 42 of file GE0TriggerPseudoBuilder.h.

{ MAX_ENDCAPS = 2, MAX_CHAMBERS = 18 };

Constructor & Destructor Documentation

GE0TriggerPseudoBuilder()

GE0TriggerPseudoBuilder::GE0TriggerPseudoBuilder ( const edm::ParameterSet &  conf )

explicit

Configure the algorithm via constructor. Receives ParameterSet percolated down from EDProducer which owns this Builder.

Definition at line 12 of file GE0TriggerPseudoBuilder.cc.

References config_, dphiresolution_, edm::ParameterSet::getUntrackedParameter(), and info_.

                                                                            {
  config_ = conf;
  info_ = config_.getUntrackedParameter<int>("info", 0);
  dphiresolution_ = config_.getUntrackedParameter<double>("DeltaPhiResolution", 0.25);
}

~GE0TriggerPseudoBuilder()

GE0TriggerPseudoBuilder::~GE0TriggerPseudoBuilder

(

)

Definition at line 18 of file GE0TriggerPseudoBuilder.cc.

{}

Member Function Documentation

build()

void GE0TriggerPseudoBuilder::build	(	const GEMSegmentCollection &	me0segments,
		GE0TriggerDigiCollection &	oc_trig
	)

Build Triggers from ME0 segment in each chamber and fill them into output collections.

Definition at line 20 of file GE0TriggerPseudoBuilder.cc.

References relativeConstraints::cham, dumpAllME0Segments(), info_, LogTrace, MAX_CHAMBERS, MAX_ENDCAPS, me0Segments_cfi::me0Segments, MuonDigiCollection< IndexType, DigiType >::put(), nano_mu_digi_cff::region, segmentConversion(), and ClusterTask_cfi::trig.

                                                                                                              {
  if (info_ > 2)
    dumpAllME0Segments(me0Segments);

  for (unsigned int endc = 0; endc < static_cast<unsigned int>(trig_me0s::MAX_ENDCAPS); endc++) {
    for (unsigned int cham = 0; cham < static_cast<unsigned int>(trig_me0s::MAX_CHAMBERS); cham++) {
      // 0th layer means whole chamber.
      // chamber counts from 1 to 18 in ME0ID
      const int region(endc == 0 ? -1 : 1);
      //  constexpr GEMDetId(int region, int ring, int station, int layer, int chamber, int ieta)
      GEMDetId detid(region, 1, 0, 0, cham + 1, 0);

      const auto& drange = me0Segments.get(detid);
      std::vector<ME0TriggerDigi> trigV;
      for (auto digiIt = drange.first; digiIt != drange.second; digiIt++) {
        if (info_ > 1)
          LogTrace("L1ME0Trigger") << "GE0TriggerPseudoBuilder id " << detid << " ME0 segment " << *digiIt
                                   << " to be converted into trigger digi\n";
        ME0TriggerDigi trig = segmentConversion(*digiIt);
        if (trig.isValid())
          trigV.push_back(trig);
        if (info_ > 1 and trig.isValid())
          LogTrace("L1ME0Trigger") << " ME0trigger " << trig << "\n";
        else if (info_ > 1)
          LogTrace("L1ME0Trigger") << " ME0trigger is not valid. Conversion failed \n";
      }

      if (!trigV.empty()) {
        LogTrace("L1ME0Trigger") << "GE0TriggerPseudoBuilder got results in " << detid << std::endl
                                 << "Put " << trigV.size() << " Trigger digi" << ((trigV.size() > 1) ? "s " : " ")
                                 << "in collection\n";
        oc_trig.put(std::make_pair(trigV.begin(), trigV.end()), detid);
      }
    }
  }
}

dumpAllME0Segments()

void GE0TriggerPseudoBuilder::dumpAllME0Segments

(

const GEMSegmentCollection &

segments

)

const

Definition at line 148 of file GE0TriggerPseudoBuilder.cc.

References GEMRecHit::gemId(), runTauDisplay::gp, GEMGeometry::idToDet(), LogTrace, me0_g, FastTrackerRecHitMaskProducer_cfi::recHits, and GeomDet::toGlobal().

Referenced by build().

                                                                                           {
  LogTrace("L1GE0Trigger") << "dumpt all ME0 Segments" << std::endl;
  for (auto iC = segments.id_begin(); iC != segments.id_end(); ++iC) {
    auto ch_segs = segments.get(*iC);
    for (auto iS = ch_segs.first; iS != ch_segs.second; ++iS) {
      if (iS->gemDetId().station() != 0)  // only dump GE0 segments
        continue;
      GlobalPoint gp = me0_g->idToDet(iS->gemDetId())->surface().toGlobal(iS->localPosition());
      LogTrace("L1ME0Trigger") << "ME0Detid " << iS->gemDetId() << " segment " << *iS << " eta " << gp.eta() << " phi "
                               << gp.phi() << std::endl;
      auto recHits(iS->recHits());
      LogTrace("L1GE0Trigger") << "\t has " << recHits.size() << " me0 rechits" << std::endl;
      for (auto& rh : recHits) {
        const GEMRecHit* me0rh(dynamic_cast<const GEMRecHit*>(rh));
        LogTrace("L1GEMTrigger") << "\t  detid " << me0rh->gemId() << " rechit " << *me0rh << std::endl;
      }
    }
  }
}

segmentConversion()

ME0TriggerDigi GE0TriggerPseudoBuilder::segmentConversion ( const GEMSegment  segment )

private

Definition at line 57 of file GE0TriggerPseudoBuilder.cc.

References L1TStage2uGTEmulatorClient_cff::BX, GEMEtaPartition::centreOfStrip(), relativeConstraints::chamber, ALPAKA_ACCELERATOR_NAMESPACE::brokenline::constexpr(), dphiresolution_, PV3DBase< T, PVType, FrameType >::eta(), GEMChamber::etaPartition(), Exception, spr::find(), GEMSegment::gemDetId(), runTauDisplay::gp, GEMGeometry::idToDet(), info_, GEMSegment::localDirection(), GEMEtaPartition::localPitch(), GEMSegment::localPosition(), edm::errors::LogicError, LogTrace, me0_g, ME0KeyLayer, ME0TriggerCentralBX, GEMChamber::nEtaPartitions(), GEMSegment::nRecHits(), GEMEtaPartition::nstrips(), or, l1ctLayer1_patternWriters_cff::partition, PV3DBase< T, PVType, FrameType >::phi(), quality, mps_fire::result, GEMSegment::specificRecHits(), nano_mu_digi_cff::strip, GEMEtaPartition::strip(), GEMGeometry::superChamber(), GeomDet::surface(), GeomDet::toGlobal(), and GloballyPositioned< T >::toLocal().

Referenced by build().

                                                                                  {
  auto detid = segment.gemDetId();
  const GEMSuperChamber* chamber = me0_g->superChamber(detid);
  const GEMChamber* keylayer = chamber->chamber(GE0TriggerPseudoBuilder::ME0KeyLayer);
  int chamberid = detid.superChamberId() % 2;
  int totRolls = keylayer->nEtaPartitions();
  float dphi = chamber->computeDeltaPhi(segment.localPosition(), segment.localDirection());

  int nrechits = segment.nRecHits();
  std::vector<int> rolls;
  for (const auto& rechit : segment.specificRecHits()) {
    if (std::find(rolls.begin(), rolls.end(), rechit.gemId().roll()) == rolls.end())
      rolls.push_back(rechit.gemId().roll());
  }
  if (rolls.size() > 2 or rolls.empty())
    LogTrace("L1ME0Trigger") << " ME0 segment is crossing " << rolls.size() << " roll !!! \n";
  //assert(rolls.size() <= 2);   // we did found very few ME0 segments crossing 3 rolls!!! this cut is applied offline
  if (rolls.empty())
    return ME0TriggerDigi();
  if (rolls[0] < 1) {
    LogTrace("L1ME0Trigger") << " ME0 segment has wrong roll number " << rolls[0] << " which should be >= 1 \n !!!";
    throw edm::Exception(edm::errors::LogicError, "ME0 should have at least one roll");
  }
  int partition = (rolls[0] - 1) << 1;  //roll from detid counts from 1
  if (rolls.size() == 2 and rolls[0] > rolls[1])
    partition = partition - 1;
  else if (rolls.size() == 2 and rolls[0] < rolls[1])
    partition = partition + 1;

  if (partition < 0 or partition >= 2 * totRolls) {
    LogTrace("L1ME0Trigger") << " ME0 segment rolls size of all hits " << rolls.size() << " rolls[0] " << rolls[0]
                             << " rolls.back() " << rolls.back() << " and ME0 trigger roll is " << partition
                             << " max expected " << 2 * totRolls - 1 << "\n";
    return ME0TriggerDigi();
  }

  //globalpoint from ME0 segment
  GlobalPoint gp = me0_g->idToDet(segment.gemDetId())->surface().toGlobal(segment.localPosition());
  const GEMEtaPartition* etapart = keylayer->etaPartition(rolls[0]);
  LocalPoint segment_lp = etapart->surface().toLocal(gp);  // convert segment gp into lp in etapartition coordinate
  float strippitch = etapart->localPitch(segment_lp);
  float strip = etapart->strip(segment_lp);
  int totstrip = etapart->nstrips();
  int istrip = static_cast<int>(strip);
  int phiposition = istrip;
  if (phiposition > totstrip)
    LogTrace("L1ME0Trigger") << " ME0 segment strip number is " << phiposition << " larger than nstrip " << totstrip
                             << " !!! \n";
  constexpr float phi_resolution = 0.5;                                               //halfstrip
  int phiposition2 = (static_cast<int>((strip - phiposition) / phi_resolution) & 1);  // half-strip resolution
  phiposition = (phiposition << 1) | phiposition2;

  //gloablpoint from ME0 trigger digi
  float centreOfStrip = istrip + 0.25 + phiposition2 * 0.5;
  GlobalPoint gp_digi = etapart->toGlobal(etapart->centreOfStrip(centreOfStrip));

  float strippitch_rad = strippitch / gp.perp();  //unit in rad

  int idphi = static_cast<int>(fabs(dphi) / (strippitch_rad * dphiresolution_));
  const int max_idphi = 512;
  if (idphi >= max_idphi) {
    LogTrace("L1ME0Trigger") << " ME0 segment dphi " << dphi << " and int type: " << idphi
                             << " larger than max allowed: " << max_idphi << " !!! \n";
    idphi = max_idphi - 1;
  }
  int quality = nrechits;  // attention: not the same as discussed in meeting
  // !!!!TODO!!!! int BX = (static_cast<int>(fabs(time) / 25.0)) * sign_time + GE0TriggerPseudoBuilder::ME0TriggerCentralBX;
  int BX = GE0TriggerPseudoBuilder::ME0TriggerCentralBX;
  int bend = (dphi > 0.0) ? 0 : 1;
  if (info_ > 2)
    LogTrace("L1ME0Trigger") << " ME0trigger in conversion function:\n"
                             << "\t chamber(1-18) " << detid.chamber() << " chamber id " << chamberid << " \n"
                             << "\t rolls size of all hits " << rolls.size() << " rolls[0] " << rolls[0]
                             << " rolls.back() " << rolls.back() << " roll " << partition << " \n"
                             << "\t nRechits " << nrechits << " quality " << quality << " \n"
                             << "\t strip(float) " << strip << " (int) " << istrip << " phiposition " << phiposition
                             << " resolution (in term of strip) " << phi_resolution << " \n"
                             << "\t deltaphi(float) " << dphi << " (int) " << idphi << " resolution "
                             << strippitch_rad * dphiresolution_ << " bend " << bend << " \n"
                             << "\t global point eta " << gp.eta() << " phi " << gp.phi() << " trigger digi eta "
                             << gp_digi.eta() << " phi " << gp_digi.phi() << " \n"
        // << "\t time (ns, float) " << time << " BX " << BX << " \n"
        ;

  ME0TriggerDigi result = ME0TriggerDigi(chamberid, quality, phiposition, partition, idphi, bend, BX);
  result.setStrip(istrip);
  return result;

  return ME0TriggerDigi();
}

setME0Geometry()

void GE0TriggerPseudoBuilder::setME0Geometry ( const GEMGeometry *  g )

inline

set geometry for the matching needs

Definition at line 34 of file GE0TriggerPseudoBuilder.h.

References g, and me0_g.

{ me0_g = g; }

Member Data Documentation

config_

edm::ParameterSet GE0TriggerPseudoBuilder::config_

private

Definition at line 60 of file GE0TriggerPseudoBuilder.h.

Referenced by GE0TriggerPseudoBuilder().

dphiresolution_

double GE0TriggerPseudoBuilder::dphiresolution_

private

Definition at line 56 of file GE0TriggerPseudoBuilder.h.

Referenced by GE0TriggerPseudoBuilder(), and segmentConversion().

info_

int GE0TriggerPseudoBuilder::info_

private

Definition at line 54 of file GE0TriggerPseudoBuilder.h.

Referenced by build(), GE0TriggerPseudoBuilder(), and segmentConversion().

max_chamber

const int GE0TriggerPseudoBuilder::max_chamber

staticprivate

Definition at line 48 of file GE0TriggerPseudoBuilder.h.

max_endcap

const int GE0TriggerPseudoBuilder::max_endcap

staticprivate

Definition at line 46 of file GE0TriggerPseudoBuilder.h.

me0_g

const GEMGeometry* GE0TriggerPseudoBuilder::me0_g

private

Definition at line 52 of file GE0TriggerPseudoBuilder.h.

Referenced by dumpAllME0Segments(), segmentConversion(), and setME0Geometry().

ME0KeyLayer

const unsigned int GE0TriggerPseudoBuilder::ME0KeyLayer = 3

staticprivate

Definition at line 49 of file GE0TriggerPseudoBuilder.h.

Referenced by segmentConversion().

ME0TriggerCentralBX

const int GE0TriggerPseudoBuilder::ME0TriggerCentralBX = 8

staticprivate

Definition at line 50 of file GE0TriggerPseudoBuilder.h.

Referenced by segmentConversion().

min_chamber

const int GE0TriggerPseudoBuilder::min_chamber

staticprivate

Definition at line 47 of file GE0TriggerPseudoBuilder.h.

min_endcap

const int GE0TriggerPseudoBuilder::min_endcap

staticprivate

Definition at line 45 of file GE0TriggerPseudoBuilder.h.