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File indexing completed on 2021-09-28 23:48:40

0001 //-------------------------------------------------
0002 //
0003 //   Class: L1MuDTEUX
0004 //
0005 //   Description: Extrapolator
0006 //
0007 //
0008 //
0009 //   Author :
0010 //   N. Neumeister            CERN EP
0011 //
0012 //--------------------------------------------------
0013 
0014 //-----------------------
0015 // This Class's Header --
0016 //-----------------------
0017 
0018 #include "L1Trigger/DTTrackFinder/src/L1MuDTEUX.h"
0019 
0020 //---------------
0021 // C++ Headers --
0022 //---------------
0023 
0024 #include <iostream>
0025 
0026 //-------------------------------
0027 // Collaborating Class Headers --
0028 //-------------------------------
0029 
0030 #include "L1Trigger/DTTrackFinder/interface/L1MuDTTFConfig.h"
0031 #include "L1Trigger/DTTrackFinder/interface/L1MuDTTrackFinder.h"
0032 #include "CondFormats/L1TObjects/interface/L1MuDTExtParam.h"
0033 #include "L1Trigger/DTTrackFinder/src/L1MuDTSectorProcessor.h"
0034 #include "L1Trigger/DTTrackFinder/src/L1MuDTSEU.h"
0035 #include "L1Trigger/DTTrackFinder/interface/L1MuDTTrackSegPhi.h"
0036 #include "CondFormats/L1TObjects/interface/L1MuDTExtLut.h"
0037 #include "CondFormats/L1TObjects/interface/L1MuDTTFParameters.h"
0038 
0039 using namespace std;
0040 
0041 // --------------------------------
0042 //       class L1MuDTEUX
0043 //---------------------------------
0044 
0045 //----------------
0046 // Constructors --
0047 //----------------
0048 
0049 L1MuDTEUX::L1MuDTEUX(const L1MuDTSectorProcessor& sp, const L1MuDTSEU& seu, int id)
0050     : m_sp(sp),
0051       m_seu(seu),
0052       m_id(id),
0053       m_result(false),
0054       m_quality(0),
0055       m_address(15),
0056       m_start(nullptr),
0057       m_target(nullptr),
0058       theExtFilter(sp.tf().config()->getExtTSFilter()),
0059       nbit_phi(sp.tf().config()->getNbitsExtPhi()),
0060       nbit_phib(sp.tf().config()->getNbitsExtPhib()) {}
0061 
0062 //--------------
0063 // Destructor --
0064 //--------------
0065 
0066 L1MuDTEUX::~L1MuDTEUX() {}
0067 
0068 //--------------
0069 // Operations --
0070 //--------------
0071 
0072 //
0073 // Equal operator
0074 //
0075 bool L1MuDTEUX::operator==(const L1MuDTEUX& eux) const {
0076   if (m_id != eux.id())
0077     return false;
0078   if (m_result != eux.result())
0079     return false;
0080   if (m_quality != eux.quality())
0081     return false;
0082   if (m_address != eux.address())
0083     return false;
0084   return true;
0085 }
0086 
0087 //
0088 // run EUX
0089 //
0090 void L1MuDTEUX::run(const L1MuDTExtLut& extLUTs, const L1MuDTTFParameters& pars) {
0091   const bool debug4 = m_sp.tf().config()->Debug(4);
0092   if (debug4)
0093     cout << "Run EUX " << m_id << endl;
0094   if (debug4)
0095     cout << "start :  " << *m_start << endl;
0096   if (debug4)
0097     cout << "target : " << *m_target << endl;
0098 
0099   if (m_start == nullptr || m_target == nullptr) {
0100     if (debug4)
0101       cout << "Error: EUX has no data loaded" << endl;
0102     return;
0103   }
0104 
0105   // start sector
0106   int sector_st = m_start->sector();
0107 
0108   // target sector
0109   int sector_ta = m_target->sector();
0110 
0111   // get index of look-up table
0112   int lut_idx = m_seu.ext();
0113   if (abs(m_target->wheel()) == 3) {
0114     switch (m_seu.ext()) {
0115       case EX13: {
0116         lut_idx = EX15;
0117         break;
0118       }
0119       case EX23: {
0120         lut_idx = EX25;
0121         break;
0122       }
0123       default: {
0124         lut_idx = m_seu.ext();
0125         break;
0126       }
0127     }
0128   }
0129 
0130   if (m_sp.tf().config()->Debug(5))
0131     cout << "EUX : using look-up table : " << static_cast<Extrapolation>(lut_idx) << endl;
0132 
0133   // Extrapolation TS quality filter
0134   int qcut = 0;
0135   if (m_seu.ext() == EX12)
0136     qcut = pars.get_soc_qcut_st1(m_sp.id().wheel(), m_sp.id().sector());
0137   if (m_seu.ext() == EX13)
0138     qcut = pars.get_soc_qcut_st1(m_sp.id().wheel(), m_sp.id().sector());
0139   if (m_seu.ext() == EX14)
0140     qcut = pars.get_soc_qcut_st1(m_sp.id().wheel(), m_sp.id().sector());
0141   if (m_seu.ext() == EX21)
0142     qcut = pars.get_soc_qcut_st2(m_sp.id().wheel(), m_sp.id().sector());
0143   if (m_seu.ext() == EX23)
0144     qcut = pars.get_soc_qcut_st2(m_sp.id().wheel(), m_sp.id().sector());
0145   if (m_seu.ext() == EX24)
0146     qcut = pars.get_soc_qcut_st2(m_sp.id().wheel(), m_sp.id().sector());
0147   if (m_seu.ext() == EX34)
0148     qcut = pars.get_soc_qcut_st4(m_sp.id().wheel(), m_sp.id().sector());
0149 
0150   if (m_start->quality() < qcut)
0151     return;
0152 
0153   // calculate bit shift
0154   int sh_phi = 12 - nbit_phi;
0155   int sh_phib = 10 - nbit_phib;
0156 
0157   int phi_target = m_target->phi() >> sh_phi;
0158   int phi_start = m_start->phi() >> sh_phi;
0159   int phib_start = (m_start->phib() >> sh_phib) << sh_phib;
0160   if (phib_start < 0)
0161     phib_start += (1 << sh_phib) - 1;
0162 
0163   // compute difference in phi
0164   int diff = phi_target - phi_start;
0165 
0166   // get low and high values from look-up table
0167   // and add offset (30 degrees ) for extrapolation to adjacent sector
0168   int offset = -2144 >> sh_phi;
0169   offset *= sec_mod(sector_ta - sector_st);
0170   int low = extLUTs.getLow(lut_idx, phib_start);
0171   int high = extLUTs.getHigh(lut_idx, phib_start);
0172   if (low < 0)
0173     low += (1 << sh_phi) - 1;
0174   if (high < 0)
0175     high += (1 << sh_phi) - 1;
0176   low = (low >> sh_phi) + offset;
0177   high = (high >> sh_phi) + offset;
0178 
0179   int phi_offset = phi_target - offset;
0180   if ((lut_idx == EX34) || (lut_idx == EX21))
0181     phi_offset = phi_start + offset;
0182   if (phi_offset >= (1 << (nbit_phi - 1)) - 1)
0183     return;
0184   if (phi_offset < -(1 << (nbit_phi - 1)) + 1)
0185     return;
0186 
0187   // is phi-difference within the extrapolation window?
0188   bool openlut = pars.get_soc_openlut_extr(m_sp.id().wheel(), m_sp.id().sector());
0189   if ((diff >= low && diff <= high) || m_sp.tf().config()->getopenLUTs() || openlut) {
0190     m_result = true;
0191     int qual_st = m_start->quality();
0192     int qual_ta = m_target->quality();
0193     if (m_seu.ext() == EX34 || m_seu.ext() == EX21) {
0194       m_quality = (qual_st == 7) ? 0 : qual_st + 1;
0195     } else {
0196       m_quality = (qual_ta == 7) ? 0 : qual_ta + 1;
0197     }
0198     m_address = m_id;
0199   }
0200 
0201   if (m_sp.tf().config()->Debug(5))
0202     cout << "diff : " << low << " " << diff << " " << high << " : " << m_result << " " << endl;
0203 }
0204 
0205 //
0206 // load data into EUX
0207 //
0208 void L1MuDTEUX::load(const L1MuDTTrackSegPhi* start_ts, const L1MuDTTrackSegPhi* target_ts) {
0209   m_start = start_ts;
0210   m_target = target_ts;
0211 
0212   // in case of EX34 and EX21 exchange start and target
0213   if ((m_seu.ext() == EX34) || (m_seu.ext() == EX21)) {
0214     m_start = target_ts;
0215     m_target = start_ts;
0216   }
0217 }
0218 
0219 //
0220 // reset this EUX
0221 //
0222 
0223 void L1MuDTEUX::reset() {
0224   m_result = false;
0225   m_quality = 0;
0226   m_address = 15;
0227 
0228   m_start = nullptr;
0229   m_target = nullptr;
0230 }
0231 
0232 //
0233 // return pointer to start and target track segment
0234 //
0235 pair<const L1MuDTTrackSegPhi*, const L1MuDTTrackSegPhi*> L1MuDTEUX::ts() const {
0236   return pair<const L1MuDTTrackSegPhi*, const L1MuDTTrackSegPhi*>(m_start, m_target);
0237 }
0238 
0239 //
0240 // symmetric modulo function for sectors
0241 // output values in the range -6 to +5
0242 //
0243 int L1MuDTEUX::sec_mod(int sector) const {
0244   int new_sector = sector % 12;
0245   if (new_sector >= 6)
0246     new_sector = new_sector - 12;
0247   if (new_sector < -6)
0248     new_sector = new_sector + 12;
0249 
0250   return new_sector;
0251 }