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File indexing completed on 2021-12-03 23:52:10

 #include "L1Trigger/CSCTriggerPrimitives/interface/CSCCathodeLCTProcessor.h"
 
 #include <iomanip>
 #include <memory>
 
 // Default values of configuration parameters.
 const unsigned int CSCCathodeLCTProcessor::def_fifo_tbins = 12;
 const unsigned int CSCCathodeLCTProcessor::def_fifo_pretrig = 7;
 const unsigned int CSCCathodeLCTProcessor::def_hit_persist = 6;
 const unsigned int CSCCathodeLCTProcessor::def_drift_delay = 2;
 const unsigned int CSCCathodeLCTProcessor::def_nplanes_hit_pretrig = 2;
 const unsigned int CSCCathodeLCTProcessor::def_nplanes_hit_pattern = 4;
 const unsigned int CSCCathodeLCTProcessor::def_pid_thresh_pretrig = 2;
 const unsigned int CSCCathodeLCTProcessor::def_min_separation = 10;
 const unsigned int CSCCathodeLCTProcessor::def_tmb_l1a_window_size = 7;
 
 //----------------
 // Constructors --
 //----------------
 
 CSCCathodeLCTProcessor::CSCCathodeLCTProcessor(unsigned endcap,
                                                unsigned station,
                                                unsigned sector,
                                                unsigned subsector,
                                                unsigned chamber,
                                                const edm::ParameterSet& conf)
     : CSCBaseboard(endcap, station, sector, subsector, chamber, conf) {
   static std::atomic<bool> config_dumped{false};
 
   // CLCT configuration parameters.
   fifo_tbins = clctParams_.getParameter<unsigned int>("clctFifoTbins");
   hit_persist = clctParams_.getParameter<unsigned int>("clctHitPersist");
   drift_delay = clctParams_.getParameter<unsigned int>("clctDriftDelay");
   nplanes_hit_pretrig = clctParams_.getParameter<unsigned int>("clctNplanesHitPretrig");
   nplanes_hit_pattern = clctParams_.getParameter<unsigned int>("clctNplanesHitPattern");
 
   // Not used yet.
   fifo_pretrig = clctParams_.getParameter<unsigned int>("clctFifoPretrig");
 
   pid_thresh_pretrig = clctParams_.getParameter<unsigned int>("clctPidThreshPretrig");
   min_separation = clctParams_.getParameter<unsigned int>("clctMinSeparation");
 
   start_bx_shift = clctParams_.getParameter<int>("clctStartBxShift");
 
   // Motherboard parameters: common for all configurations.
   tmb_l1a_window_size =  // Common to CLCT and TMB
       tmbParams_.getParameter<unsigned int>("tmbL1aWindowSize");
 
   /*
     In Summer 2021 the CLCT readout function was updated so that the
     window is based on a number of time bins around the central CLCT
     time BX7. In the past the window was based on early_tbins and late_tbins.
     The parameter is kept, but is not used.
   */
   early_tbins = tmbParams_.getParameter<int>("tmbEarlyTbins");
   if (early_tbins < 0)
     early_tbins = fifo_pretrig - CSCConstants::CLCT_EMUL_TIME_OFFSET;
 
   // wether to readout only the earliest two LCTs in readout window
   readout_earliest_2 = tmbParams_.getParameter<bool>("tmbReadoutEarliest2");
 
   // Verbosity level, set to 0 (no print) by default.
   infoV = clctParams_.getParameter<int>("verbosity");
 
   // Do not exclude pattern 0 and 1 when the Run-3 patterns are enabled!!
   // Valid Run-3 patterns are 0,1,2,3,4
   if (runCCLUT_) {
     pid_thresh_pretrig = 0;
   }
 
   // Check and print configuration parameters.
   checkConfigParameters();
   if ((infoV > 0) && !config_dumped) {
     dumpConfigParams();
     config_dumped = true;
   }
 
   numStrips_ = 0;  // Will be set later.
   // Provisional, but should be OK for all stations except ME1.
   for (int i_layer = 0; i_layer < CSCConstants::NUM_LAYERS; i_layer++) {
     if ((i_layer + 1) % 2 == 0)
       stagger[i_layer] = 0;
     else
       stagger[i_layer] = 1;
   }
 
   // which patterns should we use?
   if (runCCLUT_) {
     clct_pattern_ = CSCPatternBank::clct_pattern_run3_;
     // comparator code lookup table algorithm for Phase-2
     cclut_ = std::make_unique<ComparatorCodeLUT>(conf);
   } else {
     clct_pattern_ = CSCPatternBank::clct_pattern_legacy_;
   }
 
   const auto& shower = showerParams_.getParameterSet("cathodeShower");
   thresholds_ = shower.getParameter<std::vector<unsigned>>("showerThresholds");
   showerMinInTBin_ = shower.getParameter<unsigned>("showerMinInTBin");
   showerMaxInTBin_ = shower.getParameter<unsigned>("showerMaxInTBin");
   showerMinOutTBin_ = shower.getParameter<unsigned>("showerMinOutTBin");
   showerMaxOutTBin_ = shower.getParameter<unsigned>("showerMaxOutTBin");
   minLayersCentralTBin_ = shower.getParameter<unsigned>("minLayersCentralTBin");
   thePreTriggerDigis.clear();
 
   // quality control of stubs
   qualityControl_ = std::make_unique<LCTQualityControl>(endcap, station, sector, subsector, chamber, conf);
 }
 
 void CSCCathodeLCTProcessor::setDefaultConfigParameters() {
   // Set default values for configuration parameters.
   fifo_tbins = def_fifo_tbins;
   fifo_pretrig = def_fifo_pretrig;
   hit_persist = def_hit_persist;
   drift_delay = def_drift_delay;
   nplanes_hit_pretrig = def_nplanes_hit_pretrig;
   nplanes_hit_pattern = def_nplanes_hit_pattern;
   pid_thresh_pretrig = def_pid_thresh_pretrig;
   min_separation = def_min_separation;
   tmb_l1a_window_size = def_tmb_l1a_window_size;
 }
 
 // Set configuration parameters obtained via EventSetup mechanism.
 void CSCCathodeLCTProcessor::setConfigParameters(const CSCDBL1TPParameters* conf) {
   static std::atomic<bool> config_dumped{false};
 
   fifo_tbins = conf->clctFifoTbins();
   fifo_pretrig = conf->clctFifoPretrig();
   hit_persist = conf->clctHitPersist();
   drift_delay = conf->clctDriftDelay();
   nplanes_hit_pretrig = conf->clctNplanesHitPretrig();
   nplanes_hit_pattern = conf->clctNplanesHitPattern();
   pid_thresh_pretrig = conf->clctPidThreshPretrig();
   min_separation = conf->clctMinSeparation();
 
   // Check and print configuration parameters.
   checkConfigParameters();
   if (!config_dumped) {
     dumpConfigParams();
     config_dumped = true;
   }
 }
 
 void CSCCathodeLCTProcessor::setESLookupTables(const CSCL1TPLookupTableCCLUT* conf) { cclut_->setESLookupTables(conf); }
 
 void CSCCathodeLCTProcessor::checkConfigParameters() {
   // Make sure that the parameter values are within the allowed range.
 
   // Max expected values.
   static const unsigned int max_fifo_tbins = 1 << 5;
   static const unsigned int max_fifo_pretrig = 1 << 5;
   static const unsigned int max_hit_persist = 1 << 4;
   static const unsigned int max_drift_delay = 1 << 2;
   static const unsigned int max_nplanes_hit_pretrig = 1 << 3;
   static const unsigned int max_nplanes_hit_pattern = 1 << 3;
   static const unsigned int max_pid_thresh_pretrig = 1 << 4;
   static const unsigned int max_min_separation = CSCConstants::MAX_NUM_HALF_STRIPS_RUN2_TRIGGER;
   static const unsigned int max_tmb_l1a_window_size = 1 << 4;
 
   // Checks.
   CSCBaseboard::checkConfigParameters(fifo_tbins, max_fifo_tbins, def_fifo_tbins, "fifo_tbins");
   CSCBaseboard::checkConfigParameters(fifo_pretrig, max_fifo_pretrig, def_fifo_pretrig, "fifo_pretrig");
   CSCBaseboard::checkConfigParameters(hit_persist, max_hit_persist, def_hit_persist, "hit_persist");
   CSCBaseboard::checkConfigParameters(drift_delay, max_drift_delay, def_drift_delay, "drift_delay");
   CSCBaseboard::checkConfigParameters(
       nplanes_hit_pretrig, max_nplanes_hit_pretrig, def_nplanes_hit_pretrig, "nplanes_hit_pretrig");
   CSCBaseboard::checkConfigParameters(
       nplanes_hit_pattern, max_nplanes_hit_pattern, def_nplanes_hit_pattern, "nplanes_hit_pattern");
   CSCBaseboard::checkConfigParameters(
       pid_thresh_pretrig, max_pid_thresh_pretrig, def_pid_thresh_pretrig, "pid_thresh_pretrig");
   CSCBaseboard::checkConfigParameters(min_separation, max_min_separation, def_min_separation, "min_separation");
   CSCBaseboard::checkConfigParameters(
       tmb_l1a_window_size, max_tmb_l1a_window_size, def_tmb_l1a_window_size, "tmb_l1a_window_size");
 }
 
 void CSCCathodeLCTProcessor::clear() {
   thePreTriggerDigis.clear();
   thePreTriggerBXs.clear();
   for (int bx = 0; bx < CSCConstants::MAX_CLCT_TBINS; bx++) {
     bestCLCT[bx].clear();
     secondCLCT[bx].clear();
   }
   inTimeHMT_ = 0;
 }
 
 std::vector<CSCCLCTDigi> CSCCathodeLCTProcessor::run(const CSCComparatorDigiCollection* compdc) {
   // This is the version of the run() function that is called when running
   // over the entire detector.  It gets the comparator & timing info from the
   // comparator digis and then passes them on to another run() function.
 
   static std::atomic<bool> config_dumped{false};
   if ((infoV > 0) && !config_dumped) {
     dumpConfigParams();
     config_dumped = true;
   }
 
   // Get the number of strips and stagger of layers for the given chamber.
   // Do it only once per chamber.
   if (numStrips_ <= 0 or numStrips_ > CSCConstants::MAX_NUM_STRIPS_RUN2) {
     if (cscChamber_) {
       numStrips_ = cscChamber_->layer(1)->geometry()->numberOfStrips();
 
       // ME1/a is known to the readout hardware as strips 65-80 of ME1/1.
       // Still need to decide whether we do any special adjustments to
       // reconstruct LCTs in this region (3:1 ganged strips); for now, we
       // simply allow for hits in ME1/a and apply standard reconstruction
       // to them.
       // For Phase2 ME1/1 is set to have 4 CFEBs in ME1/b and 3 CFEBs in ME1/a
       if (isME11_) {
         if (theRing == 4) {
           edm::LogError("CSCCathodeLCTProcessor|SetupError")
               << "+++ Invalid ring number for this processor " << theRing << " was set in the config."
               << " +++\n"
               << "+++ CSC geometry looks garbled; no emulation possible +++\n";
         }
         if (!disableME1a_ && theRing == 1 && !gangedME1a_)
           numStrips_ = CSCConstants::MAX_NUM_STRIPS_RUN2;
         if (!disableME1a_ && theRing == 1 && gangedME1a_)
           numStrips_ = CSCConstants::MAX_NUM_STRIPS_RUN1;
         if (disableME1a_ && theRing == 1)
           numStrips_ = CSCConstants::NUM_STRIPS_ME1B;
       }
 
       numHalfStrips_ = 2 * numStrips_ + 1;
       numCFEBs_ = numStrips_ / CSCConstants::NUM_STRIPS_PER_CFEB;
 
       if (numStrips_ > CSCConstants::MAX_NUM_STRIPS_RUN2) {
         edm::LogError("CSCCathodeLCTProcessor|SetupError")
             << "+++ Number of strips, " << numStrips_ << " found in " << theCSCName_ << " (sector " << theSector
             << " subsector " << theSubsector << " trig id. " << theTrigChamber << ")"
             << " exceeds max expected, " << CSCConstants::MAX_NUM_STRIPS_RUN2 << " +++\n"
             << "+++ CSC geometry looks garbled; no emulation possible +++\n";
         numStrips_ = -1;
         numHalfStrips_ = -1;
         numCFEBs_ = -1;
       }
       // The strips for a given layer may be offset from the adjacent layers.
       // This was done in order to improve resolution.  We need to find the
       // 'staggering' for each layer and make necessary conversions in our
       // arrays.  -JM
       // In the TMB-07 firmware, half-strips in odd layers (layers are
       // counted as ly0-ly5) are shifted by -1 half-strip, whereas in
       // the previous firmware versions half-strips in even layers
       // were shifted by +1 half-strip.  This difference is due to a
       // change from ly3 to ly2 in the choice of the key layer, and
       // the intention to keep half-strips in the key layer unchanged.
       // In the emulator, we use the old way for both cases, to avoid
       // negative half-strip numbers.  This will necessitate a
       // subtraction of 1 half-strip for TMB-07 later on. -SV.
       for (int i_layer = 0; i_layer < CSCConstants::NUM_LAYERS; i_layer++) {
         stagger[i_layer] = (cscChamber_->layer(i_layer + 1)->geometry()->stagger() + 1) / 2;
       }
     } else {
       edm::LogError("CSCCathodeLCTProcessor|ConfigError")
           << " " << theCSCName_ << " (sector " << theSector << " subsector " << theSubsector << " trig id. "
           << theTrigChamber << ")"
           << " is not defined in current geometry! +++\n"
           << "+++ CSC geometry looks garbled; no emulation possible +++\n";
       numStrips_ = -1;
       numHalfStrips_ = -1;
       numCFEBs_ = -1;
     }
   }
 
   if (numStrips_ <= 0 or 2 * (unsigned)numStrips_ > qualityControl_->get_csc_max_halfstrip(theStation, theRing)) {
     edm::LogError("CSCCathodeLCTProcessor|ConfigError")
         << " " << theCSCName_ << " (sector " << theSector << " subsector " << theSubsector << " trig id. "
         << theTrigChamber << "):"
         << " numStrips_ = " << numStrips_ << "; CLCT emulation skipped! +++";
     std::vector<CSCCLCTDigi> emptyV;
     return emptyV;
   }
 
   // Get comparator digis in this chamber.
   bool hasDigis = getDigis(compdc);
 
   if (hasDigis) {
     // Get halfstrip times from comparator digis.
     std::vector<int> halfStripTimes[CSCConstants::NUM_LAYERS][CSCConstants::MAX_NUM_HALF_STRIPS_RUN2_TRIGGER];
     readComparatorDigis(halfStripTimes);
 
     // Pass arrays of halfstrips on to another run() doing the
     // LCT search.
     // If the number of layers containing digis is smaller than that
     // required to trigger, quit right away.  (If LCT-based digi suppression
     // is implemented one day, this condition will have to be changed
     // to the number of planes required to pre-trigger.)
     unsigned int layersHit = 0;
     for (int i_layer = 0; i_layer < CSCConstants::NUM_LAYERS; i_layer++) {
       for (int i_hstrip = 0; i_hstrip < CSCConstants::MAX_NUM_HALF_STRIPS_RUN2_TRIGGER; i_hstrip++) {
         if (!halfStripTimes[i_layer][i_hstrip].empty()) {
           layersHit++;
           break;
         }
       }
     }
     // Run the algorithm only if the probability for the pre-trigger
     // to fire is not null.  (Pre-trigger decisions are used for the
     // strip read-out conditions in DigiToRaw.)
     if (layersHit >= nplanes_hit_pretrig)
       run(halfStripTimes);
 
     // Get the high multiplicity bits in this chamber
     encodeHighMultiplicityBits(halfStripTimes);
   }
 
   // Return vector of CLCTs.
   std::vector<CSCCLCTDigi> tmpV = getCLCTs();
 
   // shift the BX from 7 to 8
   // the unpacked real data CLCTs have central BX at bin 7
   // however in simulation the central BX  is bin 8
   // to make a proper comparison with ALCTs we need
   // CLCT and ALCT to have the central BX in the same bin
   // this shift does not affect the readout of the CLCTs
   // emulated CLCTs put in the event should be centered at bin 7 (as in data)
   for (auto& p : tmpV) {
     p.setBX(p.getBX() + CSCConstants::ALCT_CLCT_OFFSET);
   }
 
   return tmpV;
 }
 
 void CSCCathodeLCTProcessor::run(
     const std::vector<int> halfstrip[CSCConstants::NUM_LAYERS][CSCConstants::MAX_NUM_HALF_STRIPS_RUN2_TRIGGER]) {
   // This version of the run() function can either be called in a standalone
   // test, being passed the halfstrip times, or called by the
   // run() function above.  It uses the findLCTs() method to find vectors
   // of LCT candidates. These candidates are sorted and the best two per bx
   // are returned.
 
   // initialize the pulse array.
   // add 1 for possible stagger
   pulse_.initialize(numHalfStrips_ + 1);
 
   std::vector<CSCCLCTDigi> CLCTlist = findLCTs(halfstrip);
 
   // LCT sorting.
   if (CLCTlist.size() > 1)
     sort(CLCTlist.begin(), CLCTlist.end(), std::greater<CSCCLCTDigi>());
 
   for (const auto& p : CLCTlist) {
     const int bx = p.getBX();
     if (bx >= CSCConstants::MAX_CLCT_TBINS) {
       if (infoV > 0)
         edm::LogWarning("L1CSCTPEmulatorOutOfTimeCLCT")
             << "+++ Bx of CLCT candidate, " << bx << ", exceeds max allowed, " << CSCConstants::MAX_CLCT_TBINS - 1
             << "; skipping it... +++\n";
       continue;
     }
 
     if (!bestCLCT[bx].isValid()) {
       bestCLCT[bx] = p;
     } else if (!secondCLCT[bx].isValid()) {
       secondCLCT[bx] = p;
     }
   }
 
   for (int bx = 0; bx < CSCConstants::MAX_CLCT_TBINS; bx++) {
     if (bestCLCT[bx].isValid()) {
       bestCLCT[bx].setTrknmb(1);
 
       // check if the LCT is valid
       qualityControl_->checkValid(bestCLCT[bx]);
 
       if (infoV > 0)
         LogDebug("CSCCathodeLCTProcessor")
             << bestCLCT[bx] << " found in " << CSCDetId::chamberName(theEndcap, theStation, theRing, theChamber)
             << " (sector " << theSector << " subsector " << theSubsector << " trig id. " << theTrigChamber << ")"
             << "\n";
     }
     if (secondCLCT[bx].isValid()) {
       secondCLCT[bx].setTrknmb(2);
 
       // check if the LCT is valid
       qualityControl_->checkValid(secondCLCT[bx]);
 
       if (infoV > 0)
         LogDebug("CSCCathodeLCTProcessor")
             << secondCLCT[bx] << " found in " << CSCDetId::chamberName(theEndcap, theStation, theRing, theChamber)
             << " (sector " << theSector << " subsector " << theSubsector << " trig id. " << theTrigChamber << ")"
             << "\n";
     }
   }
   // Now that we have our best CLCTs, they get correlated with the best
   // ALCTs and then get sent to the MotherBoard.  -JM
 }
 
 bool CSCCathodeLCTProcessor::getDigis(const CSCComparatorDigiCollection* compdc) {
   bool hasDigis = false;
 
   // Loop over layers and save comparator digis on each one into digiV[layer].
   for (int i_layer = 0; i_layer < CSCConstants::NUM_LAYERS; i_layer++) {
     digiV[i_layer].clear();
 
     CSCDetId detid(theEndcap, theStation, theRing, theChamber, i_layer + 1);
     getDigis(compdc, detid);
 
     if (isME11_ && !disableME1a_) {
       CSCDetId detid_me1a(theEndcap, theStation, 4, theChamber, i_layer + 1);
       getDigis(compdc, detid_me1a);
     }
 
     if (!digiV[i_layer].empty()) {
       hasDigis = true;
       if (infoV > 1) {
         LogTrace("CSCCathodeLCTProcessor") << "found " << digiV[i_layer].size() << " comparator digi(s) in layer "
                                            << i_layer << " of " << detid.chamberName() << " (trig. sector " << theSector
                                            << " subsector " << theSubsector << " id " << theTrigChamber << ")";
       }
     }
   }
 
   return hasDigis;
 }
 
 void CSCCathodeLCTProcessor::getDigis(const CSCComparatorDigiCollection* compdc, const CSCDetId& id) {
   const bool me1a = (id.station() == 1) && (id.ring() == 4);
   const CSCComparatorDigiCollection::Range rcompd = compdc->get(id);
   for (CSCComparatorDigiCollection::const_iterator digiIt = rcompd.first; digiIt != rcompd.second; ++digiIt) {
     const unsigned int origStrip = digiIt->getStrip();
     const unsigned int maxStripsME1a =
         gangedME1a_ ? CSCConstants::NUM_STRIPS_ME1A_GANGED : CSCConstants::NUM_STRIPS_ME1A_UNGANGED;
     // this special case can only be reached in MC
     // in real data, the comparator digis have always ring==1
     if (me1a && origStrip <= maxStripsME1a && !disableME1a_) {
       // Move ME1/A comparators from CFEB=0 to CFEB=4 if this has not
       // been done already.
       CSCComparatorDigi digi_corr(
           origStrip + CSCConstants::NUM_STRIPS_ME1B, digiIt->getComparator(), digiIt->getTimeBinWord());
       digiV[id.layer() - 1].push_back(digi_corr);
     } else {
       digiV[id.layer() - 1].push_back(*digiIt);
     }
   }
 }
 
 void CSCCathodeLCTProcessor::readComparatorDigis(
     std::vector<int> halfstrip[CSCConstants::NUM_LAYERS][CSCConstants::MAX_NUM_HALF_STRIPS_RUN2_TRIGGER]) {
   for (int i_layer = 0; i_layer < CSCConstants::NUM_LAYERS; i_layer++) {
     int i_digi = 0;  // digi counter, for dumps.
     for (std::vector<CSCComparatorDigi>::iterator pld = digiV[i_layer].begin(); pld != digiV[i_layer].end();
          pld++, i_digi++) {
       // Dump raw digi info.
       if (infoV > 1) {
         std::ostringstream strstrm;
         strstrm << "Comparator digi: comparator = " << pld->getComparator() << " strip #" << pld->getStrip()
                 << " time bins on:";
         std::vector<int> bx_times = pld->getTimeBinsOn();
         for (unsigned int tbin = 0; tbin < bx_times.size(); tbin++)
           strstrm << " " << bx_times[tbin];
         LogTrace("CSCCathodeLCTProcessor") << strstrm.str();
       }
 
       // Get comparator: 0/1 for left/right halfstrip for each comparator
       // that fired.
       int thisComparator = pld->getComparator();
       if (thisComparator != 0 && thisComparator != 1) {
         if (infoV >= 0)
           edm::LogWarning("L1CSCTPEmulatorWrongInput")
               << "+++ station " << theStation << " ring " << theRing << " chamber " << theChamber
               << " Found comparator digi with wrong comparator value = " << thisComparator << "; skipping it... +++\n";
         continue;
       }
 
       // Get strip number.
       int thisStrip = pld->getStrip() - 1;  // count from 0
       if (thisStrip < 0 || thisStrip >= numStrips_) {
         if (infoV >= 0)
           edm::LogWarning("L1CSCTPEmulatorWrongInput")
               << "+++ station " << theStation << " ring " << theRing << " chamber " << theChamber
               << " Found comparator digi with wrong strip number = " << thisStrip << " (max strips = " << numStrips_
               << "); skipping it... +++\n";
         continue;
       }
       // 2*strip: convert strip to 1/2 strip
       // comp   : comparator output
       // stagger: stagger for this layer
       int thisHalfstrip = 2 * thisStrip + thisComparator + stagger[i_layer];
       if (thisHalfstrip >= numHalfStrips_) {
         if (infoV >= 0)
           edm::LogWarning("L1CSCTPEmulatorWrongInput")
               << "+++ station " << theStation << " ring " << theRing << " chamber " << theChamber
               << " Found wrong halfstrip number = " << thisHalfstrip << "; skipping this digi... +++\n";
         continue;
       }
 
       // Get bx times on this digi and check that they are within the bounds.
       std::vector<int> bx_times = pld->getTimeBinsOn();
       for (unsigned int i = 0; i < bx_times.size(); i++) {
         // Total number of time bins in DAQ readout is given by fifo_tbins,
         // which thus determines the maximum length of time interval.
         //
         // In data, only the CLCT in the time bin that was matched with L1A are read out
         // while comparator digi is read out by 12 time bin, which includes 12 time bin info
         // in other word, CLCTs emulated from comparator digis usually showed the OTMB behavior in 12 time bin
         // while CLCT from data only showed 1 time bin OTMB behavior
         // the CLCT emulated from comparator digis usually is centering at time bin 7 (BX7) and
         // it is definitly safe to ignore any CLCTs in bx 0 or 1 and those CLCTs will never impacts on any triggers
         if (bx_times[i] > 1 && bx_times[i] < static_cast<int>(fifo_tbins)) {
           if (i == 0 || (i > 0 && bx_times[i] - bx_times[i - 1] >= static_cast<int>(hit_persist))) {
             // A later hit on the same strip is ignored during the
             // number of clocks defined by the "hit_persist" parameter
             // (i.e., 6 bx's by default).
             if (infoV > 1)
               LogTrace("CSCCathodeLCTProcessor")
                   << "Comp digi: layer " << i_layer + 1 << " digi #" << i_digi + 1 << " strip " << thisStrip
                   << " halfstrip " << thisHalfstrip << " time " << bx_times[i] << " comparator " << thisComparator
                   << " stagger " << stagger[i_layer];
             halfstrip[i_layer][thisHalfstrip].push_back(bx_times[i]);
           } else if (i > 0) {
             if (infoV > 1)
               LogTrace("CSCCathodeLCTProcessor")
                   << "+++ station " << theStation << " ring " << theRing << " chamber " << theChamber
                   << " Skipping comparator digi: strip = " << thisStrip << ", layer = " << i_layer + 1
                   << ", bx = " << bx_times[i] << ", bx of previous hit = " << bx_times[i - 1];
           }
         } else {
           if (infoV > 1)
             LogTrace("CSCCathodeLCTProcessor") << "+++ station " << theStation << " ring " << theRing << " chamber "
                                                << theChamber << "+++ Skipping comparator digi: strip = " << thisStrip
                                                << ", layer = " << i_layer + 1 << ", bx = " << bx_times[i] << " +++";
         }
       }
     }
   }
 }
 
 // TMB-07 version.
 std::vector<CSCCLCTDigi> CSCCathodeLCTProcessor::findLCTs(
     const std::vector<int> halfstrip[CSCConstants::NUM_LAYERS][CSCConstants::MAX_NUM_HALF_STRIPS_RUN2_TRIGGER]) {
   std::vector<CSCCLCTDigi> lctList;
 
   if (infoV > 1)
     dumpDigis(halfstrip);
 
   // Fire half-strip one-shots for hit_persist bx's (4 bx's by default).
   pulseExtension(halfstrip);
 
   unsigned int start_bx = start_bx_shift;
   // Stop drift_delay bx's short of fifo_tbins since at later bx's we will
   // not have a full set of hits to start pattern search anyway.
   unsigned int stop_bx = fifo_tbins - drift_delay;
   // Allow for more than one pass over the hits in the time window.
   while (start_bx < stop_bx) {
     // temp CLCT objects
     CSCCLCTDigi tempBestCLCT;
     CSCCLCTDigi tempSecondCLCT;
 
     // All half-strip pattern envelopes are evaluated simultaneously, on every
     // clock cycle.
     int first_bx = 999;
     bool pre_trig = preTrigger(start_bx, first_bx);
 
     // If any of half-strip envelopes has enough layers hit in it, TMB
     // will pre-trigger.
     if (pre_trig) {
       thePreTriggerBXs.push_back(first_bx);
       if (infoV > 1)
         LogTrace("CSCCathodeLCTProcessor") << "..... pretrigger at bx = " << first_bx << "; waiting drift delay .....";
 
       // TMB latches LCTs drift_delay clocks after pretrigger.
       // in the configuration the drift_delay is set to 2bx by default
       // this is the time that is required for the electrons to drift to the
       // cathode strips. 15ns drift time --> 45 ns is 3 sigma for the delay
       // this corresponds to 2bx
       int latch_bx = first_bx + drift_delay;
 
       // define a new pattern map
       // for each key half strip, and for each pattern, store the 2D collection of fired comparator digis
       std::map<int, std::map<int, CSCCLCTDigi::ComparatorContainer>> hits_in_patterns;
       hits_in_patterns.clear();
 
       // We check if there is at least one key half strip for which at least
       // one pattern id has at least the minimum number of hits
       bool hits_in_time = patternFinding(latch_bx, hits_in_patterns);
       if (infoV > 1) {
         if (hits_in_time) {
           for (int hstrip = stagger[CSCConstants::KEY_CLCT_LAYER - 1]; hstrip < numHalfStrips_; hstrip++) {
             if (nhits[hstrip] > 0) {
               LogTrace("CSCCathodeLCTProcessor")
                   << " bx = " << std::setw(2) << latch_bx << " --->"
                   << " halfstrip = " << std::setw(3) << hstrip << " best pid = " << std::setw(2) << best_pid[hstrip]
                   << " nhits = " << nhits[hstrip];
             }
           }
         }
       }
       // This trigger emulator does not have an active CFEB flag for DAQ (csc trigger hardware: AFF)
       // This is a fundamental difference with the firmware where the TMB prepares the DAQ to
       // read out the chamber
 
       // The pattern finder runs continuously, so another pre-trigger
       // could occur already at the next bx.
 
       // Quality for sorting.
       int quality[CSCConstants::MAX_NUM_HALF_STRIPS_RUN2_TRIGGER];
       int best_halfstrip[CSCConstants::MAX_CLCTS_PER_PROCESSOR];
       int best_quality[CSCConstants::MAX_CLCTS_PER_PROCESSOR];
 
       for (int ilct = 0; ilct < CSCConstants::MAX_CLCTS_PER_PROCESSOR; ilct++) {
         best_halfstrip[ilct] = -1;
         best_quality[ilct] = 0;
       }
 
       // Calculate quality from pattern id and number of hits, and
       // simultaneously select best-quality LCT.
       if (hits_in_time) {
         for (int hstrip = stagger[CSCConstants::KEY_CLCT_LAYER - 1]; hstrip < numHalfStrips_; hstrip++) {
           // The bend-direction bit pid[0] is ignored (left and right
           // bends have equal quality).
           quality[hstrip] = (best_pid[hstrip] & 14) | (nhits[hstrip] << 5);
           if (quality[hstrip] > best_quality[0]) {
             best_halfstrip[0] = hstrip;
             best_quality[0] = quality[hstrip];
           }
           // temporary alias
           const int best_hs(best_halfstrip[0]);
           // construct a CLCT if the trigger condition has been met
           if (best_hs >= 0 && nhits[best_hs] >= nplanes_hit_pattern) {
             // overwrite the current best CLCT
             tempBestCLCT = constructCLCT(first_bx, best_hs, hits_in_patterns[best_hs][best_pid[best_hs]]);
           }
         }
       }
 
       // If 1st best CLCT is found, look for the 2nd best.
       if (best_halfstrip[0] >= 0) {
         // Get the half-strip of the best CLCT in this BX that was put into the list.
         // You do need to re-add the any stagger, because the busy keys are based on
         // the pulse array which takes into account strip stagger!!!
         const unsigned halfStripBestCLCT(tempBestCLCT.getKeyStrip() + stagger[CSCConstants::KEY_CLCT_LAYER - 1]);
 
         // Mark keys near best CLCT as busy by setting their quality to
         // zero, and repeat the search.
         markBusyKeys(halfStripBestCLCT, best_pid[halfStripBestCLCT], quality);
 
         for (int hstrip = stagger[CSCConstants::KEY_CLCT_LAYER - 1]; hstrip < numHalfStrips_; hstrip++) {
           if (quality[hstrip] > best_quality[1]) {
             best_halfstrip[1] = hstrip;
             best_quality[1] = quality[hstrip];
           }
           // temporary alias
           const int best_hs(best_halfstrip[1]);
           // construct a CLCT if the trigger condition has been met
           if (best_hs >= 0 && nhits[best_hs] >= nplanes_hit_pattern) {
             // overwrite the current second best CLCT
             tempSecondCLCT = constructCLCT(first_bx, best_hs, hits_in_patterns[best_hs][best_pid[best_hs]]);
           }
         }
         // add the CLCTs to the collection
         if (tempBestCLCT.isValid()) {
           lctList.push_back(tempBestCLCT);
         }
         if (tempSecondCLCT.isValid()) {
           lctList.push_back(tempSecondCLCT);
         }
       }  //find CLCT, end of best_halfstrip[0] >= 0
 
       // If there is a trigger, CLCT pre-trigger state machine
       // checks the number of hits that lie within a pattern template
       // at every bx, and waits for it to drop below threshold.
       // The search for CLCTs resumes only when the number of hits
       // drops below threshold.
       start_bx = fifo_tbins;
       // Stop checking drift_delay bx's short of fifo_tbins since
       // at later bx's we won't have a full set of hits for a
       // pattern search anyway.
       unsigned int stop_time = fifo_tbins - drift_delay;
       for (unsigned int bx = latch_bx + 1; bx < stop_time; bx++) {
         bool return_to_idle = true;
         bool hits_in_time = patternFinding(bx, hits_in_patterns);
         if (hits_in_time) {
           for (int hstrip = stagger[CSCConstants::KEY_CLCT_LAYER - 1]; hstrip < numHalfStrips_; hstrip++) {
             // the dead-time is done at the pre-trigger, not at the trigger
             if (nhits[hstrip] >= nplanes_hit_pretrig) {
               if (infoV > 1)
                 LogTrace("CSCCathodeLCTProcessor") << " State machine busy at bx = " << bx;
               return_to_idle = false;
               break;
             }
           }
         }
         if (return_to_idle) {
           if (infoV > 1)
             LogTrace("CSCCathodeLCTProcessor") << " State machine returns to idle state at bx = " << bx;
           start_bx = bx;
           break;
         }
       }
     }  //pre_trig
     else {
       start_bx = first_bx + 1;  // no dead time
     }
   }
 
   return lctList;
 }  // findLCTs -- TMB-07 version.
 
 // Common to all versions.
 void CSCCathodeLCTProcessor::pulseExtension(
     const std::vector<int> time[CSCConstants::NUM_LAYERS][CSCConstants::MAX_NUM_HALF_STRIPS_RUN2_TRIGGER]) {
   const unsigned bits_in_pulse = pulse_.bitsInPulse();
 
   // Clear pulse array.  This array will be used as a bit representation of
   // hit times.  For example: if strip[1][2] has a value of 3, then 1 shifted
   // left 3 will be bit pattern of pulse[1][2].  This would make the pattern
   // look like 0000000000001000.  Then add on additional bits to signify
   // the duration of a signal (hit_persist, formerly bx_width) to simulate
   // the TMB's drift delay.  So for the same pulse[1][2] with a hit_persist
   // of 3 would look like 0000000000111000.  This is similating the digital
   // one-shot in the TMB.
   pulse_.clear();
 
   // Loop over all layers and halfstrips.
   for (int i_layer = 0; i_layer < CSCConstants::NUM_LAYERS; i_layer++) {
     for (int i_strip = 0; i_strip < numHalfStrips_; i_strip++) {
       // If there is a hit, simulate digital one-shot persistence starting
       // in the bx of the initial hit.  Fill this into pulse[][].
       if (!time[i_layer][i_strip].empty()) {
         std::vector<int> bx_times = time[i_layer][i_strip];
         for (unsigned int i = 0; i < bx_times.size(); i++) {
           // Check that min and max times are within the allowed range.
           if (bx_times[i] < 0 || bx_times[i] + hit_persist >= bits_in_pulse) {
             if (infoV > 0)
               edm::LogWarning("L1CSCTPEmulatorOutOfTimeDigi")
                   << "+++ BX time of comparator digi (halfstrip = " << i_strip << " layer = " << i_layer
                   << ") bx = " << bx_times[i] << " is not within the range (0-" << bits_in_pulse
                   << "] allowed for pulse extension.  Skip this digi! +++\n";
             continue;
           }
           if (bx_times[i] >= start_bx_shift) {
             pulse_.extend(i_layer, i_strip, bx_times[i], hit_persist);
           }
         }
       }
     }
   }
 }  // pulseExtension.
 
 // TMB-07 version.
 bool CSCCathodeLCTProcessor::preTrigger(const int start_bx, int& first_bx) {
   if (infoV > 1)
     LogTrace("CSCCathodeLCTProcessor") << "....................PreTrigger...........................";
 
   int nPreTriggers = 0;
 
   bool pre_trig = false;
   // Now do a loop over bx times to see (if/when) track goes over threshold
   for (unsigned int bx_time = start_bx; bx_time < fifo_tbins; bx_time++) {
     // For any given bunch-crossing, start at the lowest keystrip and look for
     // the number of separate layers in the pattern for that keystrip that have
     // pulses at that bunch-crossing time.  Do the same for the next keystrip,
     // etc.  Then do the entire process again for the next bunch-crossing, etc
     // until you find a pre-trigger.
 
     std::map<int, std::map<int, CSCCLCTDigi::ComparatorContainer>> hits_in_patterns;
     hits_in_patterns.clear();
 
     bool hits_in_time = patternFinding(bx_time, hits_in_patterns);
     if (hits_in_time) {
       // clear the pretriggers
       clearPreTriggers();
 
       for (int hstrip = stagger[CSCConstants::KEY_CLCT_LAYER - 1]; hstrip < numHalfStrips_; hstrip++) {
         // check the properties of the pattern on this halfstrip
         if (infoV > 1) {
           if (nhits[hstrip] > 0) {
             LogTrace("CSCCathodeLCTProcessor")
                 << " bx = " << std::setw(2) << bx_time << " --->"
                 << " halfstrip = " << std::setw(3) << hstrip << " best pid = " << std::setw(2) << best_pid[hstrip]
                 << " nhits = " << nhits[hstrip];
           }
         }
         // a pretrigger was found
         if (nhits[hstrip] >= nplanes_hit_pretrig && best_pid[hstrip] >= pid_thresh_pretrig) {
           pre_trig = true;
           ispretrig_[hstrip] = true;
 
           // write each pre-trigger to output
           nPreTriggers++;
           thePreTriggerDigis.push_back(constructPreCLCT(bx_time, hstrip, nPreTriggers));
         }
       }
 
       // upon the first pretrigger, we save first BX and exit
       if (pre_trig) {
         first_bx = bx_time;  // bx at time of pretrigger
         return true;
       }
     }
   }  // end loop over bx times
 
   if (infoV > 1)
     LogTrace("CSCCathodeLCTProcessor") << "no pretrigger, returning \n";
   first_bx = fifo_tbins;
   return false;
 }  // preTrigger -- TMB-07 version.
 
 // TMB-07 version.
 bool CSCCathodeLCTProcessor::patternFinding(
     const unsigned int bx_time, std::map<int, std::map<int, CSCCLCTDigi::ComparatorContainer>>& hits_in_patterns) {
   if (bx_time >= fifo_tbins)
     return false;
 
   unsigned layers_hit = pulse_.numberOfLayersAtBX(bx_time);
   if (layers_hit < nplanes_hit_pretrig)
     return false;
 
   for (int key_hstrip = 0; key_hstrip < numHalfStrips_; key_hstrip++) {
     best_pid[key_hstrip] = 0;
     nhits[key_hstrip] = 0;
   }
 
   bool hit_layer[CSCConstants::NUM_LAYERS];
 
   // Loop over candidate key strips.
   for (int key_hstrip = stagger[CSCConstants::KEY_CLCT_LAYER - 1]; key_hstrip < numHalfStrips_; key_hstrip++) {
     // Loop over patterns and look for hits matching each pattern.
     for (unsigned int pid = clct_pattern_.size() - 1; pid >= pid_thresh_pretrig and pid < clct_pattern_.size(); pid--) {
       layers_hit = 0;
       // clear all layers
       for (int ilayer = 0; ilayer < CSCConstants::NUM_LAYERS; ilayer++) {
         hit_layer[ilayer] = false;
       }
 
       // clear a single pattern!
       CSCCLCTDigi::ComparatorContainer hits_single_pattern;
       hits_single_pattern.resize(6);
       for (auto& p : hits_single_pattern) {
         p.resize(CSCConstants::CLCT_PATTERN_WIDTH, CSCConstants::INVALID_HALF_STRIP);
       }
 
       // clear all medians
       double num_pattern_hits = 0., times_sum = 0.;
       std::multiset<int> mset_for_median;
       mset_for_median.clear();
 
       // Loop over halfstrips in trigger pattern mask and calculate the
       // "absolute" halfstrip number for each.
       for (int this_layer = 0; this_layer < CSCConstants::NUM_LAYERS; this_layer++) {
         for (int strip_num = 0; strip_num < CSCConstants::CLCT_PATTERN_WIDTH; strip_num++) {
           // ignore "0" half-strips in the pattern
           if (clct_pattern_[pid][this_layer][strip_num] == 0)
             continue;
 
           // the current strip is the key half-strip plus the offset (can be negative or positive)
           int this_strip = CSCPatternBank::clct_pattern_offset_[strip_num] + key_hstrip;
 
           // current strip should be valid of course
           if (this_strip >= 0 && this_strip < numHalfStrips_) {
             if (infoV > 3) {
               LogTrace("CSCCathodeLCTProcessor") << " In patternFinding: key_strip = " << key_hstrip << " pid = " << pid
                                                  << " layer = " << this_layer << " strip = " << this_strip << std::endl;
             }
             // Determine if "one shot" is high at this bx_time
             if (pulse_.isOneShotHighAtBX(this_layer, this_strip, bx_time)) {
               if (hit_layer[this_layer] == false) {
                 hit_layer[this_layer] = true;
                 layers_hit++;  // determines number of layers hit
                 // add this strip in this layer to the pattern we are currently considering
                 hits_single_pattern[this_layer][strip_num] = this_strip - stagger[this_layer];
               }
 
               // find at what bx did pulse on this halsfstrip & layer have started
               // use hit_persist constraint on how far back we can go
               int first_bx_layer = bx_time;
               for (unsigned int dbx = 0; dbx < hit_persist; dbx++) {
                 if (pulse_.isOneShotHighAtBX(this_layer, this_strip, first_bx_layer - 1))
                   first_bx_layer--;
                 else
                   break;
               }
               times_sum += (double)first_bx_layer;
               num_pattern_hits += 1.;
               mset_for_median.insert(first_bx_layer);
               if (infoV > 2)
                 LogTrace("CSCCathodeLCTProcessor") << " 1st bx in layer: " << first_bx_layer << " sum bx: " << times_sum
                                                    << " #pat. hits: " << num_pattern_hits;
             }
           }
         }  // end loop over strips in pretrigger pattern
       }    // end loop over layers
 
       // save the pattern information when a trigger was formed!
       if (layers_hit >= nplanes_hit_pattern) {
         hits_in_patterns[key_hstrip][pid] = hits_single_pattern;
       }
 
       // determine the current best pattern!
       if (layers_hit > nhits[key_hstrip]) {
         best_pid[key_hstrip] = pid;
         nhits[key_hstrip] = layers_hit;
         // Do not loop over the other (worse) patterns if max. numbers of
         // hits is found.
         if (nhits[key_hstrip] == CSCConstants::NUM_LAYERS)
           break;
       }
     }  // end loop over pid
   }    // end loop over candidate key strips
 
   // At this point there exists at least one halfstrip for which at least one pattern
   // has at least 3 layers --> definition of a pre-trigger
   return true;
 }  // patternFinding -- TMB-07 version.
 
 // TMB-07 version.
 void CSCCathodeLCTProcessor::markBusyKeys(const int best_hstrip,
                                           const int best_patid,
                                           int quality[CSCConstants::MAX_NUM_HALF_STRIPS_RUN2_TRIGGER]) {
   int nspan = min_separation;
   int pspan = min_separation;
 
   for (int hstrip = best_hstrip - nspan; hstrip <= best_hstrip + pspan; hstrip++) {
     if (hstrip >= 0 && hstrip < CSCConstants::MAX_NUM_HALF_STRIPS_RUN2_TRIGGER) {
       quality[hstrip] = 0;
     }
   }
 }  // markBusyKeys -- TMB-07 version.
 
 CSCCLCTDigi CSCCathodeLCTProcessor::constructCLCT(const int bx,
                                                   const unsigned halfstrip_withstagger,
                                                   const CSCCLCTDigi::ComparatorContainer& hits) {
   // Assign the CLCT properties
   const unsigned quality = nhits[halfstrip_withstagger];
   const unsigned pattern = best_pid[halfstrip_withstagger];
   const unsigned bend = CSCPatternBank::getPatternBend(clct_pattern_[pattern]);
   const unsigned keyhalfstrip = halfstrip_withstagger - stagger[CSCConstants::KEY_CLCT_LAYER - 1];
   const unsigned cfeb = keyhalfstrip / CSCConstants::NUM_HALF_STRIPS_PER_CFEB;
   const unsigned halfstrip = keyhalfstrip % CSCConstants::NUM_HALF_STRIPS_PER_CFEB;
 
   // set the Run-2 properties
   CSCCLCTDigi clct(1,
                    quality,
                    pattern,
                    // CLCTs are always of type halfstrip (not strip or distrip)
                    1,
                    bend,
                    halfstrip,
                    cfeb,
                    bx,
                    0,
                    0,
                    -1,
                    CSCCLCTDigi::Version::Legacy);
 
   // set the hit collection
   clct.setHits(hits);
 
   // do the CCLUT procedures for Run-3
   if (runCCLUT_) {
     cclut_->run(clct, numCFEBs_);
   }
 
   // purge the comparator digi collection from the obsolete "65535" entries...
   cleanComparatorContainer(clct);
 
   if (infoV > 1) {
     LogTrace("CSCCathodeLCTProcessor") << "Produce CLCT " << clct << std::endl;
   }
 
   return clct;
 }
 
 CSCCLCTPreTriggerDigi CSCCathodeLCTProcessor::constructPreCLCT(const int bx_time,
                                                                const unsigned hstrip,
                                                                const unsigned nPreTriggers) const {
   const int bend = clct_pattern_[best_pid[hstrip]][CSCConstants::NUM_LAYERS - 1][CSCConstants::CLCT_PATTERN_WIDTH];
   const int halfstrip = hstrip % CSCConstants::NUM_HALF_STRIPS_PER_CFEB;
   const int cfeb = hstrip / CSCConstants::NUM_HALF_STRIPS_PER_CFEB;
   return CSCCLCTPreTriggerDigi(1, nhits[hstrip], best_pid[hstrip], 1, bend, halfstrip, cfeb, bx_time, nPreTriggers, 0);
 }
 
 void CSCCathodeLCTProcessor::clearPreTriggers() {
   for (int hstrip = stagger[CSCConstants::KEY_CLCT_LAYER - 1]; hstrip < numHalfStrips_; hstrip++) {
     ispretrig_[hstrip] = false;
   }
 }
 
 void CSCCathodeLCTProcessor::cleanComparatorContainer(CSCCLCTDigi& clct) const {
   CSCCLCTDigi::ComparatorContainer newHits = clct.getHits();
   for (auto& p : newHits) {
     p.erase(
         std::remove_if(p.begin(), p.end(), [](unsigned i) -> bool { return i == CSCConstants::INVALID_HALF_STRIP; }),
         p.end());
   }
   clct.setHits(newHits);
 }
 
 // --------------------------------------------------------------------------
 // Auxiliary code.
 // --------------------------------------------------------------------------
 // Dump of configuration parameters.
 void CSCCathodeLCTProcessor::dumpConfigParams() const {
   std::ostringstream strm;
   strm << "\n";
   strm << "++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n";
   strm << "+                  CLCT configuration parameters:                  +\n";
   strm << "++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n";
   strm << " fifo_tbins   [total number of time bins in DAQ readout] = " << fifo_tbins << "\n";
   strm << " fifo_pretrig [start time of cathode raw hits in DAQ readout] = " << fifo_pretrig << "\n";
   strm << " hit_persist  [duration of signal pulse, in 25 ns bins] = " << hit_persist << "\n";
   strm << " drift_delay  [time after pre-trigger before TMB latches LCTs] = " << drift_delay << "\n";
   strm << " nplanes_hit_pretrig [min. number of layers hit for pre-trigger] = " << nplanes_hit_pretrig << "\n";
   strm << " nplanes_hit_pattern [min. number of layers hit for trigger] = " << nplanes_hit_pattern << "\n";
   strm << " pid_thresh_pretrig [lower threshold on pattern id] = " << pid_thresh_pretrig << "\n";
   strm << " min_separation     [region of busy key strips] = " << min_separation << "\n";
   strm << "++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n";
   LogDebug("CSCCathodeLCTProcessor") << strm.str();
 }
 
 // Reasonably nice dump of digis on half-strips.
 void CSCCathodeLCTProcessor::dumpDigis(
     const std::vector<int> strip[CSCConstants::NUM_LAYERS][CSCConstants::MAX_NUM_HALF_STRIPS_RUN2_TRIGGER]) const {
   LogDebug("CSCCathodeLCTProcessor") << theCSCName_ << " strip type: half-strip,  numHalfStrips " << numHalfStrips_;
 
   std::ostringstream strstrm;
   for (int i_strip = 0; i_strip < numHalfStrips_; i_strip++) {
     if (i_strip % 10 == 0) {
       if (i_strip < 100)
         strstrm << i_strip / 10;
       else
         strstrm << (i_strip - 100) / 10;
     } else
       strstrm << " ";
     if ((i_strip + 1) % CSCConstants::NUM_HALF_STRIPS_PER_CFEB == 0)
       strstrm << " ";
   }
   strstrm << "\n";
   for (int i_strip = 0; i_strip < numHalfStrips_; i_strip++) {
     strstrm << i_strip % 10;
     if ((i_strip + 1) % CSCConstants::NUM_HALF_STRIPS_PER_CFEB == 0)
       strstrm << " ";
   }
   for (int i_layer = 0; i_layer < CSCConstants::NUM_LAYERS; i_layer++) {
     strstrm << "\n";
     for (int i_strip = 0; i_strip < numHalfStrips_; i_strip++) {
       if (!strip[i_layer][i_strip].empty()) {
         std::vector<int> bx_times = strip[i_layer][i_strip];
         // Dump only the first in time.
         strstrm << std::hex << bx_times[0] << std::dec;
       } else {
         strstrm << "-";
       }
       if ((i_strip + 1) % CSCConstants::NUM_HALF_STRIPS_PER_CFEB == 0)
         strstrm << " ";
     }
   }
   LogTrace("CSCCathodeLCTProcessor") << strstrm.str();
 }
 
 // Returns vector of read-out CLCTs, if any.  Starts with the vector
 // of all found CLCTs and selects the ones in the read-out time window.
 std::vector<CSCCLCTDigi> CSCCathodeLCTProcessor::readoutCLCTs() const {
   // temporary container for further selection
   std::vector<CSCCLCTDigi> tmpV;
 
   /*
     CLCTs in the BX window [early_tbin,...,late_tbin] are considered good for physics
     The central CLCT BX is time bin 7.
     For tmb_l1a_window_size set to 7 (Run-1, Run-2), the window is [4, 5, 6, 7, 8, 9, 10]
     For tmb_l1a_window_size set to 5 (Run-3), the window is [5, 6, 7, 8, 9]
     For tmb_l1a_window_size set to 3 (Run-4?), the window is [6, 7, 8]
   */
   const unsigned delta_tbin = tmb_l1a_window_size / 2;
   int early_tbin = CSCConstants::CLCT_CENTRAL_BX - delta_tbin;
   int late_tbin = CSCConstants::CLCT_CENTRAL_BX + delta_tbin;
   /*
      Special case for an even-numbered time-window,
      For instance tmb_l1a_window_size set to 6: [4, 5, 6, 7, 8, 9]
   */
   if (tmb_l1a_window_size % 2 == 0)
     late_tbin = CSCConstants::CLCT_CENTRAL_BX + delta_tbin - 1;
   const int max_late_tbin = CSCConstants::MAX_CLCT_TBINS - 1;
 
   // debugging messages when early_tbin or late_tbin has a suspicious value
   if (early_tbin < 0) {
     edm::LogWarning("CSCCathodeLCTProcessor|SuspiciousParameters")
         << "Early time bin (early_tbin) smaller than minimum allowed, which is 0. set early_tbin to 0.";
     early_tbin = 0;
   }
   if (late_tbin > max_late_tbin) {
     edm::LogWarning("CSCCathodeLCTProcessor|SuspiciousParameters")
         << "Late time bin (late_tbin) larger than maximum allowed, which is " << max_late_tbin
         << ". set early_tbin to max allowed";
     late_tbin = CSCConstants::MAX_CLCT_TBINS - 1;
   }
 
   // get the valid LCTs. No BX selection is done here
   const auto& all_clcts = getCLCTs();
 
   // Start from the vector of all found CLCTs and select those within
   // the CLCT*L1A coincidence window.
   int bx_readout = -1;
   for (const auto& clct : all_clcts) {
     // only consider valid CLCTs
     if (!clct.isValid())
       continue;
 
     const int bx = clct.getBX();
     // Skip CLCTs found too early relative to L1Accept.
     if (bx < early_tbin) {
       if (infoV > 1)
         LogDebug("CSCCathodeLCTProcessor")
             << " Do not report correlated CLCT on key halfstrip " << clct.getStrip() << ": found at bx " << bx
             << ", whereas the earliest allowed bx is " << early_tbin;
       continue;
     }
 
     // Skip CLCTs found too late relative to L1Accept.
     if (bx > late_tbin) {
       if (infoV > 1)
         LogDebug("CSCCathodeLCTProcessor")
             << " Do not report correlated CLCT on key halfstrip " << clct.getStrip() << ": found at bx " << bx
             << ", whereas the latest allowed bx is " << late_tbin;
       continue;
     }
 
     // If (readout_earliest_2) take only CLCTs in the earliest bx in the read-out window:
     if (readout_earliest_2) {
       // the first CLCT passes
       // the second CLCT passes if the BX matches to the first
       if (bx_readout == -1 || bx == bx_readout) {
         tmpV.push_back(clct);
         if (bx_readout == -1)
           bx_readout = bx;
       }
     } else
       tmpV.push_back(clct);
   }
 
   // do a final check on the CLCTs in readout
   qualityControl_->checkMultiplicityBX(tmpV);
   for (const auto& clct : tmpV) {
     qualityControl_->checkValid(clct);
   }
 
   return tmpV;
 }
 
 // Returns vector of all found CLCTs, if any.  Used for ALCT-CLCT matching.
 std::vector<CSCCLCTDigi> CSCCathodeLCTProcessor::getCLCTs() const {
   std::vector<CSCCLCTDigi> tmpV;
   for (int bx = 0; bx < CSCConstants::MAX_CLCT_TBINS; bx++) {
     if (bestCLCT[bx].isValid())
       tmpV.push_back(bestCLCT[bx]);
     if (secondCLCT[bx].isValid())
       tmpV.push_back(secondCLCT[bx]);
   }
   return tmpV;
 }
 
 // shift the BX from 7 to 8
 // the unpacked real data CLCTs have central BX at bin 7
 // however in simulation the central BX  is bin 8
 // to make a proper comparison with ALCTs we need
 // CLCT and ALCT to have the central BX in the same bin
 CSCCLCTDigi CSCCathodeLCTProcessor::getBestCLCT(int bx) const {
   CSCCLCTDigi lct = bestCLCT[bx];
   lct.setBX(lct.getBX() + CSCConstants::ALCT_CLCT_OFFSET);
   return lct;
 }
 
 CSCCLCTDigi CSCCathodeLCTProcessor::getSecondCLCT(int bx) const {
   CSCCLCTDigi lct = secondCLCT[bx];
   lct.setBX(lct.getBX() + CSCConstants::ALCT_CLCT_OFFSET);
   return lct;
 }
 
 /** Returns shower bits */
 CSCShowerDigi CSCCathodeLCTProcessor::readoutShower() const { return shower_; }
 
 void CSCCathodeLCTProcessor::encodeHighMultiplicityBits(
     const std::vector<int> halfstrip[CSCConstants::NUM_LAYERS][CSCConstants::MAX_NUM_HALF_STRIPS_RUN2_TRIGGER]) {
   inTimeHMT_ = 0;
 
   auto layerTime = [=](unsigned time) { return time == CSCConstants::CLCT_CENTRAL_BX; };
   // Calculate layers with hits
   unsigned nLayersWithHits = 0;
   for (int i_layer = 0; i_layer < CSCConstants::NUM_LAYERS; i_layer++) {
     bool atLeastOneWGHit = false;
     for (int i_hstrip = 0; i_hstrip < CSCConstants::MAX_NUM_HALF_STRIPS_RUN2_TRIGGER; i_hstrip++) {
       // there is at least one halfstrip...
       if (!halfstrip[i_layer][i_hstrip].empty()) {
         auto times = halfstrip[i_layer][i_hstrip];
         int nLayerTime = std::count_if(times.begin(), times.end(), layerTime);
         // ...for which at least one time bin was on for the central BX
         if (nLayerTime > 0) {
           atLeastOneWGHit = true;
           break;
         }
       }
     }
     // add this layer to the number of layers hit
     if (atLeastOneWGHit) {
       nLayersWithHits++;
     }
   }
 
   // require at least nLayersWithHits for the central time bin
   // do nothing if there are not enough layers with hits
   if (nLayersWithHits < minLayersCentralTBin_)
     return;
 
   // functions for in-time and out-of-time
   auto inTime = [=](unsigned time) { return time >= showerMinInTBin_ and time <= showerMaxInTBin_; };
 
   // count the half-strips in-time and out-time
   unsigned hitsInTime = 0;
   for (int i_layer = 0; i_layer < CSCConstants::NUM_LAYERS; i_layer++) {
     for (int i_hstrip = 0; i_hstrip < CSCConstants::MAX_NUM_HALF_STRIPS_RUN2_TRIGGER; i_hstrip++) {
       auto times = halfstrip[i_layer][i_hstrip];
       hitsInTime += std::count_if(times.begin(), times.end(), inTime);
     }
   }
 
   // convert station and ring number to index
   // index runs from 2 to 10, subtract 2
   unsigned csc_idx = CSCDetId::iChamberType(theStation, theRing) - 2;
 
   // loose, nominal and tight
   std::vector<unsigned> station_thresholds = {
       thresholds_[csc_idx * 3], thresholds_[csc_idx * 3 + 1], thresholds_[csc_idx * 3 + 2]};
 
   // assign the bits
   for (unsigned i = 0; i < station_thresholds.size(); i++) {
     if (hitsInTime >= station_thresholds[i]) {
       inTimeHMT_ = i + 1;
     }
   }
 
   // create a new object
   shower_ = CSCShowerDigi(inTimeHMT_, false, theTrigChamber);
 }

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