1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
16 ///////////////////////////////////////////////////////////////////////////////
18 // TRD MCM (Multi Chip Module) simulator //
20 ///////////////////////////////////////////////////////////////////////////////
26 New release on 2007/08/17
28 AliTRDmcmSim is now stably working and zero suppression function seems ok.
29 From now, the default version of raw data is set to 3 in AliTRDfeeParam.
31 The following internal parameters were abolished because it is useless and
37 GetCol member was modified accordingly.
39 New member function DumpData was prepared for diagnostics.
41 ZSMapping member function was debugged. It was causing crash due to
42 wrong indexing in 1 dimensional numbering. Also code was shaped up better.
46 /*Semi-final version of TRD raw data simulation code with zero suppression (ZS)
47 similar to TRD FEE. ZS is realized by the class group:
53 AliTRDfeeParam has been modified to have more parameters like raw data
54 production version and so on. AliTRDmcmSim is new class and this is the core
55 of MCM (PASA+TRAP) simulator. It has still very simple function and it will be
56 another project to improve this to make it closer to the reall FEE.
57 AliTRDrawData has been modified to use new class AliTRDmcmSim.
59 These modifications were tested on Aug. 02 HEAD version that code itself
60 compiles. I'm sure there must be still bugs and we need testing by as many as
61 possible persons now. Especially it seems HLT part is impacted by problems
62 because some parameters were moved from AliTRDrawData to AliTRDfeeParam (like
63 fRawVersion disappeared from AliTRDrawData).
65 In TRD definition, we have now 4 raw data versions.
67 0 very old offline version (by Bogdan)
68 1 test version (no zero suppression)
69 2 final version (no zero suppression)
70 3 test version (with zero suppression)
72 The default is still set to 2 in AliTRDfeeParam::fgkRAWversion and it uses
73 previously existing codes. If you set this to 3, AliTRDrawData changes behavior
74 to use AliTRDmcmSim with ZS.
76 Plan is after we make sure it works stably, we delete AliTRDmcm which is obsolete.
77 However it still take time because tracklet part is not yet touched.
78 The default raw version is 2.
83 // if no histo is drawn, these are obsolete
87 // only needed if I/O of tracklets is activated
99 #include "AliTRDmcmSim.h"
100 #include "AliTRDfeeParam.h"
101 #include "AliTRDSimParam.h"
102 #include "AliTRDgeometry.h"
103 #include "AliTRDcalibDB.h"
104 #include "AliTRDdigitsManager.h"
105 #include "AliTRDarrayADC.h"
106 // additional for new tail filter and/or tracklet
107 #include "AliTRDtrapAlu.h"
108 #include "AliTRDpadPlane.h"
109 #include "AliTRDtrackletMCM.h"
112 #include "AliLoader.h"
114 ClassImp(AliTRDmcmSim)
116 //_____________________________________________________________________________
117 AliTRDmcmSim::AliTRDmcmSim() :TObject()
118 ,fInitialized(kFALSE)
143 // AliTRDmcmSim default constructor
146 // By default, nothing is initialized.
147 // It is necessary to issue Init before use.
150 //_____________________________________________________________________________
151 AliTRDmcmSim::AliTRDmcmSim(const AliTRDmcmSim &m)
153 ,fInitialized(kFALSE)
179 // AliTRDmcmSim copy constructor
182 // By default, nothing is initialized.
183 // It is necessary to issue Init before use.
186 //_____________________________________________________________________________
187 AliTRDmcmSim::~AliTRDmcmSim()
190 // AliTRDmcmSim destructor
193 if( fADCR != NULL ) {
194 for( Int_t iadc = 0 ; iadc < fNADC; iadc++ ) {
195 delete [] fADCR[iadc];
196 delete [] fADCF[iadc];
197 delete [] fADCT[iadc];
198 delete [] fZSM [iadc];
216 //_____________________________________________________________________________
217 AliTRDmcmSim &AliTRDmcmSim::operator=(const AliTRDmcmSim &m)
220 // Assignment operator
224 ((AliTRDmcmSim &) m).Copy(*this);
230 //_____________________________________________________________________________
231 void AliTRDmcmSim::Copy(TObject &m) const
236 ((AliTRDmcmSim &) m).fNextEvent = 0; //new
237 ((AliTRDmcmSim &) m).fMaxTracklets = 0; //new
238 ((AliTRDmcmSim &) m).fInitialized = 0;
239 ((AliTRDmcmSim &) m).fChaId = 0;
240 ((AliTRDmcmSim &) m).fSector = 0;
241 ((AliTRDmcmSim &) m).fStack = 0;
242 ((AliTRDmcmSim &) m).fLayer = 0;
243 ((AliTRDmcmSim &) m).fRobPos = 0;
244 ((AliTRDmcmSim &) m).fMcmPos = 0;
245 ((AliTRDmcmSim &) m).fNADC = 0;
246 ((AliTRDmcmSim &) m).fNTimeBin = 0;
247 ((AliTRDmcmSim &) m).fRow = 0;
248 ((AliTRDmcmSim &) m).fADCR = 0;
249 ((AliTRDmcmSim &) m).fADCF = 0;
250 ((AliTRDmcmSim &) m).fADCT = 0; //new
251 ((AliTRDmcmSim &) m).fPosLUT = 0; //new
252 ((AliTRDmcmSim &) m).fMCMT = 0; //new
253 ((AliTRDmcmSim &) m).fZSM = 0;
254 ((AliTRDmcmSim &) m).fZSM1Dim = 0;
255 ((AliTRDmcmSim &) m).fFeeParam = 0;
256 ((AliTRDmcmSim &) m).fSimParam = 0;
257 ((AliTRDmcmSim &) m).fCal = 0;
258 ((AliTRDmcmSim &) m).fGeo = 0;
262 //_____________________________________________________________________________
264 //void AliTRDmcmSim::Init( Int_t chaId, Int_t robPos, Int_t mcmPos )
265 void AliTRDmcmSim::Init( Int_t chaId, Int_t robPos, Int_t mcmPos, Bool_t newEvent = kFALSE ) // only for readout tree (new event)
268 // Initialize the class with new geometry information
269 // fADC array will be reused with filled by zero
273 fFeeParam = AliTRDfeeParam::Instance();
274 fSimParam = AliTRDSimParam::Instance();
275 fCal = AliTRDcalibDB::Instance();
276 fGeo = new AliTRDgeometry();
278 fSector = fGeo->GetSector( fChaId );
279 fStack = fGeo->GetStack( fChaId );
280 fLayer = fGeo->GetLayer( fChaId );
283 fNADC = fFeeParam->GetNadcMcm();
284 fNTimeBin = fCal->GetNumberOfTimeBins();
285 fRow = fFeeParam->GetPadRowFromMCM( fRobPos, fMcmPos );
287 fMaxTracklets = fFeeParam->GetMaxNrOfTracklets();
292 if (newEvent == kTRUE) {
298 // Allocate ADC data memory if not yet done
299 if( fADCR == NULL ) {
300 fADCR = new Int_t *[fNADC];
301 fADCF = new Int_t *[fNADC];
302 fADCT = new Int_t *[fNADC]; //new
303 fZSM = new Int_t *[fNADC];
304 fZSM1Dim = new Int_t [fNADC];
305 for( Int_t iadc = 0 ; iadc < fNADC; iadc++ ) {
306 fADCR[iadc] = new Int_t[fNTimeBin];
307 fADCF[iadc] = new Int_t[fNTimeBin];
308 fADCT[iadc] = new Int_t[fNTimeBin]; //new
309 fZSM [iadc] = new Int_t[fNTimeBin];
313 // Initialize ADC data
314 for( Int_t iadc = 0 ; iadc < fNADC; iadc++ ) {
315 for( Int_t it = 0 ; it < fNTimeBin ; it++ ) {
318 fADCT[iadc][it] = -1; //new
319 fZSM [iadc][it] = 1; // Default unread = 1
321 fZSM1Dim[iadc] = 1; // Default unread = 1
325 fPosLUT = new Int_t[128];
326 for(Int_t i = 0; i<128; i++){
330 fMCMT = new UInt_t[fMaxTracklets];
331 for(Int_t i = 0; i < fMaxTracklets; i++) {
336 fInitialized = kTRUE;
339 //_____________________________________________________________________________
340 Bool_t AliTRDmcmSim::CheckInitialized()
343 // Check whether object is initialized
346 if( ! fInitialized ) {
347 AliDebug(2, Form ("AliTRDmcmSim is not initialized but function other than Init() is called."));
352 //_____________________________________________________________________________
355 void AliTRDmcmSim::SetPosLUT() {
356 Double_t iHi = (Double_t)fCal->GetPRFhi();
357 Double_t iLo = (Double_t)fCal->GetPRFlo();
358 Int_t nBin = fCal->GetPRFbin();
359 Int_t iOff = fLayer * nBin;
360 Int_t kNlayer = fGeo->Nlayer();
362 Float_t *sPRFsmp = new Float_t[nBin*kNlayer];
363 Double_t *sPRFlayer = new Double_t[nBin];
366 for(Int_t i = 0; i<nBin*kNlayer; i++){
368 //printf("%f\n",fCal->GetSampledPRF()[i]);
369 sPRFsmp[i] = fCal->GetSampledPRF()[i];
373 Double_t sWidth = (iHi-iLo)/((Double_t) nBin);
374 Int_t sPad = (Int_t) (1.0/sWidth);
376 // get the PRF for actual layer (interpolated to ibin data-points; 61 measured)
377 for(Int_t iBin = 0; iBin < nBin; iBin++){
378 sPRFlayer[iBin] = (Double_t)sPRFsmp[iOff+iBin];
381 Int_t bin0 = (Int_t)(-iLo / sWidth - 0.5); // bin-nr. for pad-position 0
383 Int_t bin1 = (Int_t)((Double_t)(0.5 - iLo) / sWidth - 0.5); // bin-nr. for pad-position 0.5
385 bin0 = bin0 + 1; //avoid negative values in aYest (start right of symmetry center)
386 while (bin0-sPad<0) {
389 while (bin1+sPad>=nBin) {
393 Double_t* aYest = new Double_t[bin1-bin0+1];
395 /*TH1F* hist1 = new TH1F("h1","yest(y)",128,0,0.5);
396 TH1F* hist2 = new TH1F("h2","y(yest)",128,0,0.5);
397 TH1F* hist3 = new TH1F("h3","y(yest)-yest",128,0,0.5);
398 TH1F* hist4 = new TH1F("h4","y(yest)-yest,discrete",128,0,0.5);
400 TCanvas *c1 = new TCanvas("c1","c1",800,1000);
402 TCanvas *c2 = new TCanvas("c2","c2",800,1000);
404 TCanvas *c3 = new TCanvas("c3","c3",800,1000);
406 TCanvas *c4 = new TCanvas("c4","c4",800,1000);
409 for(Int_t iBin = bin0; iBin <= bin1; iBin++){
410 aYest[iBin-bin0] = 0.5*(sPRFlayer[iBin-sPad] - sPRFlayer[iBin+sPad])/(sPRFlayer[iBin]); // estimated position from PRF; between 0 and 1
411 //Double_t position = ((Double_t)(iBin)+0.5)*sWidth+iLo;
412 // hist1->Fill(position,aYest[iBin-bin0]);
417 Double_t aY[128]; // reversed function
422 for(Int_t j = 0; j<128; j++) { // loop over all Yest; LUT has 128 entries;
423 Double_t yest = ((Double_t)j)/256;
426 while (yest>aYest[iBin] && iBin<(bin1-bin0)) {
429 if((iBin == bin1 - bin0)&&(yest>aYest[iBin])) {
430 aY[j] = 0.5; // yest too big
431 //hist2->Fill(yest,aY[j]);
435 Int_t bin_d = iBin + bin0 - 1;
436 Int_t bin_u = iBin + bin0;
437 Double_t y_d = ((Double_t)bin_d + 0.5)*sWidth + iLo; // lower y
438 Double_t y_u = ((Double_t)bin_u + 0.5)*sWidth + iLo; // upper y
439 Double_t yest_d = aYest[iBin-1]; // lower estimated y
440 Double_t yest_u = aYest[iBin]; // upper estimated y
442 aY[j] = ((yest-yest_d)/(yest_u-yest_d))*(y_u-y_d) + y_d;
443 //hist2->Fill(yest,aY[j]);
446 aY[j] = aY[j] - yest;
447 //hist3->Fill(yest,aY[j]);
449 a.AssignDouble(aY[j]);
451 fPosLUT[j] = a.GetValue(); // 1+8Bit value;128 entries;LUT is steered by abs(Q(i+1)-Q(i-1))/Q(i)=COG and gives the correction to COG/2
452 //hist4->Fill(yest,fPosLUT[j]);
465 //_____________________________________________________________________________
466 Int_t* AliTRDmcmSim::GetPosLUT(){
472 void AliTRDmcmSim::SetData( Int_t iadc, Int_t *adc )
475 // Store ADC data into array of raw data
478 if( !CheckInitialized() ) return;
480 if( iadc < 0 || iadc >= fNADC ) {
481 //Log (Form ("Error: iadc is out of range (should be 0 to %d).", fNADC-1));
485 for( int it = 0 ; it < fNTimeBin ; it++ ) {
486 fADCR[iadc][it] = (Int_t)(adc[it]);
490 //_____________________________________________________________________________
491 void AliTRDmcmSim::SetData( Int_t iadc, Int_t it, Int_t adc )
494 // Store ADC data into array of raw data
497 if( !CheckInitialized() ) return;
499 if( iadc < 0 || iadc >= fNADC ) {
500 //Log (Form ("Error: iadc is out of range (should be 0 to %d).", fNADC-1));
504 fADCR[iadc][it] = adc;
507 //_____________________________________________________________________________
508 void AliTRDmcmSim::SetDataPedestal( Int_t iadc )
511 // Store ADC data into array of raw data
514 if( !CheckInitialized() ) return;
516 if( iadc < 0 || iadc >= fNADC ) {
517 //Log (Form ("Error: iadc is out of range (should be 0 to %d).", fNADC-1));
521 for( Int_t it = 0 ; it < fNTimeBin ; it++ ) {
522 fADCR[iadc][it] = fSimParam->GetADCbaseline();
526 //_____________________________________________________________________________
527 Int_t AliTRDmcmSim::GetCol( Int_t iadc )
530 // Return column id of the pad for the given ADC channel
533 if( !CheckInitialized() ) return -1;
535 return fFeeParam->GetPadColFromADC(fRobPos, fMcmPos, iadc);
538 //_____________________________________________________________________________
539 Int_t AliTRDmcmSim::ProduceRawStream( UInt_t *buf, Int_t maxSize )
542 // Produce raw data stream from this MCM and put in buf
543 // Returns number of words filled, or negative value
544 // with -1 * number of overflowed words
549 Int_t nw = 0; // Number of written words
550 Int_t of = 0; // Number of overflowed words
551 Int_t rawVer = fFeeParam->GetRAWversion();
554 if( !CheckInitialized() ) return 0;
556 if( fFeeParam->GetRAWstoreRaw() ) {
562 // Produce MCM header
563 x = ((fRobPos * fFeeParam->GetNmcmRob() + fMcmPos) << 24) | ((iEv % 0x100000) << 4) | 0xC;
574 for( Int_t iAdc = 0 ; iAdc < fNADC ; iAdc++ ) {
575 if( fZSM1Dim[iAdc] == 0 ) { // 0 means not suppressed
587 // Produce ADC data. 3 timebins are packed into one 32 bits word
588 // In this version, different ADC channel will NOT share the same word
590 UInt_t aa=0, a1=0, a2=0, a3=0;
592 for (Int_t iAdc = 0; iAdc < 21; iAdc++ ) {
593 if( rawVer>= 3 && fZSM1Dim[iAdc] != 0 ) continue; // suppressed
594 aa = !(iAdc & 1) + 2;
595 for (Int_t iT = 0; iT < fNTimeBin; iT+=3 ) {
596 a1 = ((iT ) < fNTimeBin ) ? adc[iAdc][iT ] : 0;
597 a2 = ((iT + 1) < fNTimeBin ) ? adc[iAdc][iT+1] : 0;
598 a3 = ((iT + 2) < fNTimeBin ) ? adc[iAdc][iT+2] : 0;
599 x = (a3 << 22) | (a2 << 12) | (a1 << 2) | aa;
609 if( of != 0 ) return -of; else return nw;
612 //_____________________________________________________________________________
613 Int_t AliTRDmcmSim::ProduceRawStreamV2( UInt_t *buf, Int_t maxSize )
616 // Produce raw data stream from this MCM and put in buf
617 // Returns number of words filled, or negative value
618 // with -1 * number of overflowed words
623 Int_t nw = 0; // Number of written words
624 Int_t of = 0; // Number of overflowed words
625 Int_t rawVer = fFeeParam->GetRAWversion();
627 Int_t nActiveADC = 0; // number of activated ADC bits in a word
629 if( !CheckInitialized() ) return 0;
631 if( fFeeParam->GetRAWstoreRaw() ) {
637 // Produce MCM header
638 x = (1<<31) | ((fRobPos * fFeeParam->GetNmcmRob() + fMcmPos) << 24) | ((iEv % 0x100000) << 4) | 0xC;
641 //printf("\nMCM header: %X ",x);
647 // Produce ADC mask : nncc cccm mmmm mmmm mmmm mmmm mmmm 1100
648 // n : unused , c : ADC count, m : selected ADCs
651 for( Int_t iAdc = 0 ; iAdc < fNADC ; iAdc++ ) {
652 if( fZSM1Dim[iAdc] == 0 ) { // 0 means not suppressed
653 x = x | (1 << (iAdc+4) ); // last 4 digit reserved for 1100=0xc
654 nActiveADC++; // number of 1 in mmm....m
657 x = x | (1 << 30) | ( ( 0x3FFFFFFC ) & (~(nActiveADC) << 25) ) | 0xC; // nn = 01, ccccc are inverted, 0xc=1100
658 //printf("nActiveADC=%d=%08X, inverted=%X ",nActiveADC,nActiveADC,x );
662 //printf("ADC mask: %X nMask=%d ADC data: ",x,nActiveADC);
669 // Produce ADC data. 3 timebins are packed into one 32 bits word
670 // In this version, different ADC channel will NOT share the same word
672 UInt_t aa=0, a1=0, a2=0, a3=0;
674 for (Int_t iAdc = 0; iAdc < 21; iAdc++ ) {
675 if( rawVer>= 3 && fZSM1Dim[iAdc] != 0 ) continue; // Zero Suppression, 0 means not suppressed
676 aa = !(iAdc & 1) + 2;
677 for (Int_t iT = 0; iT < fNTimeBin; iT+=3 ) {
678 a1 = ((iT ) < fNTimeBin ) ? adc[iAdc][iT ] : 0;
679 a2 = ((iT + 1) < fNTimeBin ) ? adc[iAdc][iT+1] : 0;
680 a3 = ((iT + 2) < fNTimeBin ) ? adc[iAdc][iT+2] : 0;
681 x = (a3 << 22) | (a2 << 12) | (a1 << 2) | aa;
692 if( of != 0 ) return -of; else return nw;
695 //_____________________________________________________________________________
696 Int_t AliTRDmcmSim::ProduceTrackletStream( UInt_t *buf, Int_t maxSize )
699 // Produce tracklet data stream from this MCM and put in buf
700 // Returns number of words filled, or negative value
701 // with -1 * number of overflowed words
705 Int_t nw = 0; // Number of written words
706 Int_t of = 0; // Number of overflowed words
708 if( !CheckInitialized() ) return 0;
710 // Produce tracklet data. A maximum of four 32 Bit words will be written per MCM
711 // fMCMT is filled continuously until no more tracklet words available
714 while ( (wd < fMaxTracklets) && (fMCMT[wd] > 0) ){
725 if( of != 0 ) return -of; else return nw;
729 //_____________________________________________________________________________
730 void AliTRDmcmSim::Filter()
733 // Apply digital filter
736 if( !CheckInitialized() ) return;
738 // Initialize filtered data array with raw data
739 for( Int_t iadc = 0 ; iadc < fNADC; iadc++ ) {
740 for( Int_t it = 0 ; it < fNTimeBin ; it++ ) {
741 fADCF[iadc][it] = fADCR[iadc][it];
745 // Then apply fileters one by one to filtered data array
746 if( fFeeParam->IsPFon() ) FilterPedestal();
747 if( fFeeParam->IsGFon() ) FilterGain();
748 if( fFeeParam->IsTFon() ) FilterTail();
751 //_____________________________________________________________________________
752 void AliTRDmcmSim::FilterPedestal()
757 // Apply pedestal filter
760 Int_t ap = fSimParam->GetADCbaseline(); // ADC instrinsic pedestal
761 Int_t ep = fFeeParam->GetPFeffectPedestal(); // effective pedestal
762 //Int_t tc = fFeeParam->GetPFtimeConstant(); // this makes no sense yet
764 for( Int_t iadc = 0 ; iadc < fNADC; iadc++ ) {
765 for( Int_t it = 0 ; it < fNTimeBin ; it++ ) {
766 fADCF[iadc][it] = fADCF[iadc][it] - ap + ep;
771 //_____________________________________________________________________________
772 void AliTRDmcmSim::FilterGain()
775 // Apply gain filter (not implemented)
776 // Later it will be implemented because gain digital filiter will
777 // increase noise level.
782 //_____________________________________________________________________________
783 void AliTRDmcmSim::FilterTail()
786 // Apply exponential tail filter (Bogdan's version)
789 Double_t *dtarg = new Double_t[fNTimeBin];
790 Int_t *itarg = new Int_t[fNTimeBin];
791 Int_t nexp = fFeeParam->GetTFnExp();
792 Int_t tftype = fFeeParam->GetTFtype();
796 case 0: // Exponential Filter Analog Bogdan
797 for (Int_t iCol = 0; iCol < fNADC; iCol++) {
798 FilterSimDeConvExpA( fADCF[iCol], dtarg, fNTimeBin, nexp);
799 for (Int_t iTime = 0; iTime < fNTimeBin; iTime++) {
800 fADCF[iCol][iTime] = (Int_t) TMath::Max(0.0,dtarg[iTime]);
805 case 1: // Exponential filter digital Bogdan
806 for (Int_t iCol = 0; iCol < fNADC; iCol++) {
807 FilterSimDeConvExpD( fADCF[iCol], itarg, fNTimeBin, nexp);
808 for (Int_t iTime = 0; iTime < fNTimeBin; iTime++) {
809 fADCF[iCol][iTime] = itarg[iTime];
814 case 2: // Exponential filter Marian special
815 for (Int_t iCol = 0; iCol < fNADC; iCol++) {
816 FilterSimDeConvExpMI( fADCF[iCol], dtarg, fNTimeBin);
817 for (Int_t iTime = 0; iTime < fNTimeBin; iTime++) {
818 fADCF[iCol][iTime] = (Int_t) TMath::Max(0.0,dtarg[iTime]);
824 case 3: // Exponential filter using AliTRDtrapAlu class
825 for (Int_t iCol = 0; iCol < fNADC; iCol++) {
826 FilterSimDeConvExpEl( fADCF[iCol], itarg, fNTimeBin, nexp);
827 for (Int_t iTime = 0; iTime < fNTimeBin; iTime++) {
828 fADCF[iCol][iTime] = itarg[iTime]>>2; // to be used for raw-data
829 fADCT[iCol][iTime] = itarg[iTime]; // 12bits; to be used for tracklet; tracklet will have own container;
836 AliError(Form("Invalid filter type %d ! \n", tftype ));
845 //_____________________________________________________________________________
846 void AliTRDmcmSim::ZSMapping()
849 // Zero Suppression Mapping implemented in TRAP chip
851 // See detail TRAP manual "Data Indication" section:
852 // http://www.kip.uni-heidelberg.de/ti/TRD/doc/trap/TRAP-UserManual.pdf
855 Int_t eBIS = fFeeParam->GetEBsglIndThr(); // TRAP default = 0x4 (Tis=4)
856 Int_t eBIT = fFeeParam->GetEBsumIndThr(); // TRAP default = 0x28 (Tit=40)
857 Int_t eBIL = fFeeParam->GetEBindLUT(); // TRAP default = 0xf0
858 // (lookup table accept (I2,I1,I0)=(111)
859 // or (110) or (101) or (100))
860 Int_t eBIN = fFeeParam->GetEBignoreNeighbour(); // TRAP default = 1 (no neighbor sensitivity)
861 Int_t ep = AliTRDfeeParam::GetPFeffectPedestal();
863 if( !CheckInitialized() ) return;
865 for( Int_t iadc = 1 ; iadc < fNADC-1; iadc++ ) {
866 for( Int_t it = 0 ; it < fNTimeBin ; it++ ) {
868 // Get ADC data currently in filter buffer
869 Int_t ap = fADCF[iadc-1][it] - ep; // previous
870 Int_t ac = fADCF[iadc ][it] - ep; // current
871 Int_t an = fADCF[iadc+1][it] - ep; // next
873 // evaluate three conditions
874 Int_t i0 = ( ac >= ap && ac >= an ) ? 0 : 1; // peak center detection
875 Int_t i1 = ( ap + ac + an > eBIT ) ? 0 : 1; // cluster
876 Int_t i2 = ( ac > eBIS ) ? 0 : 1; // absolute large peak
878 Int_t i = i2 * 4 + i1 * 2 + i0; // Bit position in lookup table
879 Int_t d = (eBIL >> i) & 1; // Looking up (here d=0 means true
880 // and d=1 means false according to TRAP manual)
883 if( eBIN == 0 ) { // turn on neighboring ADCs
884 fZSM[iadc-1][it] &= d;
885 fZSM[iadc+1][it] &= d;
891 // do 1 dim projection
892 for( Int_t iadc = 0 ; iadc < fNADC; iadc++ ) {
893 for( Int_t it = 0 ; it < fNTimeBin ; it++ ) {
894 fZSM1Dim[iadc] &= fZSM[iadc][it];
900 //_____________________________________________________________________________
901 void AliTRDmcmSim::DumpData( char *f, char *target )
904 // Dump data stored (for debugging).
905 // target should contain one or multiple of the following characters
907 // F for filtered data
908 // Z for zero suppression map
910 // other characters are simply ignored
913 UInt_t tempbuf[1024];
915 if( !CheckInitialized() ) return;
917 std::ofstream of( f, std::ios::out | std::ios::app );
918 of << Form("AliTRDmcmSim::DumpData det=%03d sm=%02d stack=%d layer=%d rob=%d mcm=%02d\n",
919 fChaId, fSector, fStack, fLayer, fRobPos, fMcmPos );
921 for( int t=0 ; target[t] != 0 ; t++ ) {
922 switch( target[t] ) {
925 of << Form("fADCR (raw ADC data)\n");
926 for( Int_t iadc = 0 ; iadc < fNADC; iadc++ ) {
927 of << Form(" ADC %02d: ", iadc);
928 for( Int_t it = 0 ; it < fNTimeBin ; it++ ) {
929 of << Form("% 4d", fADCR[iadc][it]);
936 of << Form("fADCF (filtered ADC data)\n");
937 for( Int_t iadc = 0 ; iadc < fNADC; iadc++ ) {
938 of << Form(" ADC %02d: ", iadc);
939 for( Int_t it = 0 ; it < fNTimeBin ; it++ ) {
940 of << Form("% 4d", fADCF[iadc][it]);
947 of << Form("fZSM and fZSM1Dim (Zero Suppression Map)\n");
948 for( Int_t iadc = 0 ; iadc < fNADC; iadc++ ) {
949 of << Form(" ADC %02d: ", iadc);
950 if( fZSM1Dim[iadc] == 0 ) { of << " R " ; } else { of << " . "; } // R:read .:suppressed
951 for( Int_t it = 0 ; it < fNTimeBin ; it++ ) {
952 if( fZSM[iadc][it] == 0 ) { of << " R"; } else { of << " ."; } // R:read .:suppressed
959 Int_t s = ProduceRawStream( tempbuf, 1024 );
960 of << Form("Stream for Raw Simulation size=%d rawver=%d\n", s, fFeeParam->GetRAWversion());
961 of << Form(" address data\n");
962 for( int i = 0 ; i < s ; i++ ) {
963 of << Form(" %04x %08x\n", i, tempbuf[i]);
969 //_____________________________________________________________________________
970 void AliTRDmcmSim::FilterSimDeConvExpA(Int_t *source, Double_t *target
971 , Int_t n, Int_t nexp)
974 // Exponential filter "analog"
975 // source will not be changed
980 Double_t reminder[2];
984 Double_t coefficients[2];
986 // Initialize (coefficient = alpha, rates = lambda)
987 // FilterOpt.C (aliroot@pel:/homel/aliroot/root/work/beamt/CERN02)
989 Double_t r1 = (Double_t)fFeeParam->GetTFr1();
990 Double_t r2 = (Double_t)fFeeParam->GetTFr2();
991 Double_t c1 = (Double_t)fFeeParam->GetTFc1();
992 Double_t c2 = (Double_t)fFeeParam->GetTFc2();
994 coefficients[0] = c1;
995 coefficients[1] = c2;
998 rates[0] = TMath::Exp(-dt/(r1));
999 rates[1] = TMath::Exp(-dt/(r2));
1001 // Attention: computation order is important
1003 for (k = 0; k < nexp; k++) {
1007 for (i = 0; i < n; i++) {
1009 result = ((Double_t)source[i] - correction); // no rescaling
1012 for (k = 0; k < nexp; k++) {
1013 reminder[k] = rates[k] * (reminder[k] + coefficients[k] * result);
1017 for (k = 0; k < nexp; k++) {
1018 correction += reminder[k];
1023 //_____________________________________________________________________________
1024 void AliTRDmcmSim::FilterSimDeConvExpD(Int_t *source, Int_t *target, Int_t n
1028 // Exponential filter "digital"
1029 // source will not be changed
1039 // FilterOpt.C (aliroot@pel:/homel/aliroot/root/work/beamt/CERN02)
1040 // initialize (coefficient = alpha, rates = lambda)
1043 Double_t r1 = (Double_t)fFeeParam->GetTFr1();
1044 Double_t r2 = (Double_t)fFeeParam->GetTFr2();
1045 Double_t c1 = (Double_t)fFeeParam->GetTFc1();
1046 Double_t c2 = (Double_t)fFeeParam->GetTFc2();
1048 Int_t fLambdaL = (Int_t)((TMath::Exp(-dt/r1) - 0.75) * 2048.0);
1049 Int_t fLambdaS = (Int_t)((TMath::Exp(-dt/r2) - 0.25) * 2048.0);
1050 Int_t iLambdaL = fLambdaL & 0x01FF; iLambdaL |= 0x0600; // 9 bit paramter + fixed bits
1051 Int_t iLambdaS = fLambdaS & 0x01FF; iLambdaS |= 0x0200; // 9 bit paramter + fixed bits
1054 fAlphaL = (Int_t) (c1 * 2048.0);
1055 iAlphaL = fAlphaL & 0x03FF; // 10 bit paramter
1058 fAlphaL = (Int_t) (c1 * 2048.0);
1059 fAlphaS = (Int_t) ((c2 - 0.5) * 2048.0);
1060 iAlphaL = fAlphaL & 0x03FF; // 10 bit paramter
1061 iAlphaS = fAlphaS & 0x03FF; iAlphaS |= 0x0400; // 10 bit paramter + fixed bits
1064 Double_t iAl = iAlphaL / 2048.0; // alpha L: correspondence to floating point numbers
1065 Double_t iAs = iAlphaS / 2048.0; // alpha S: correspondence to floating point numbers
1066 Double_t iLl = iLambdaL / 2048.0; // lambda L: correspondence to floating point numbers
1067 Double_t iLs = iLambdaS / 2048.0; // lambda S: correspondence to floating point numbers
1075 Int_t iFactor = ((Int_t) fFeeParam->GetPFeffectPedestal() ) << 2;
1077 Double_t xi = 1 - (iLl*iAs + iLs*iAl); // Calculation of equilibrium values of the
1078 rem1 = (Int_t) ((iFactor/xi) * ((1-iLs)*iLl*iAl)); // Internal registers to prevent switch on effects.
1079 rem2 = (Int_t) ((iFactor/xi) * ((1-iLl)*iLs*iAs));
1081 // further initialization
1082 if ((rem1 + rem2) > 0x0FFF) {
1083 correction = 0x0FFF;
1086 correction = (rem1 + rem2) & 0x0FFF;
1089 fTailPed = iFactor - correction;
1091 for (i = 0; i < n; i++) {
1093 result = (source[i] - correction);
1094 if (result < 0) { // Too much undershoot
1100 h1 = (rem1 + ((iAlphaL * result) >> 11));
1108 h2 = (rem2 + ((iAlphaS * result) >> 11));
1116 rem1 = (iLambdaL * h1 ) >> 11;
1117 rem2 = (iLambdaS * h2 ) >> 11;
1119 if ((rem1 + rem2) > 0x0FFF) {
1120 correction = 0x0FFF;
1123 correction = (rem1 + rem2) & 0x0FFF;
1130 //_____________________________________________________________________________
1131 void AliTRDmcmSim::FilterSimDeConvExpMI(Int_t *source, Double_t *target
1135 // Exponential filter (M. Ivanov)
1136 // source will not be changed
1144 for (i = 0; i < n; i++) {
1145 sig1[i] = (Double_t)source[i];
1149 Float_t lambda0 = (1.0 / fFeeParam->GetTFr2()) * dt;
1150 Float_t lambda1 = (1.0 / fFeeParam->GetTFr1()) * dt;
1152 FilterSimTailMakerSpline( sig1, sig2, lambda0, n);
1153 FilterSimTailCancelationMI( sig2, sig3, 0.7, lambda1, n);
1155 for (i = 0; i < n; i++) {
1156 target[i] = sig3[i];
1161 //______________________________________________________________________________
1162 void AliTRDmcmSim::FilterSimTailMakerSpline(Double_t *ampin, Double_t *ampout
1163 , Double_t lambda, Int_t n)
1166 // Special filter (M. Ivanov)
1170 Double_t l = TMath::Exp(-lambda*0.5);
1174 // Initialize in[] and out[] goes 0 ... 2*n+19
1175 for (i = 0; i < n*2+20; i++) {
1181 in[1] = (ampin[0] + ampin[1]) * 0.5;
1183 // Add charge to the end
1184 for (i = 0; i < 22; i++) {
1185 in[2*(n-1)+i] = ampin[n-1]; // in[] goes 2*n-2, 2*n-1, ... , 2*n+19
1188 // Use arithmetic mean
1189 for (i = 1; i < n-1; i++) {
1190 in[2*i] = ampin[i]; // in[] goes 2, 3, ... , 2*n-4, 2*n-3
1191 in[2*i+1] = ((ampin[i]+ampin[i+1]))/2.;
1197 for (i = 2*n; i >= 0; i--) {
1198 out[i] = in[i] + temp;
1199 temp = l*(temp+in[i]);
1202 for (i = 0; i < n; i++){
1203 //ampout[i] = out[2*i+1]; // org
1204 ampout[i] = out[2*i];
1209 //______________________________________________________________________________
1210 void AliTRDmcmSim::FilterSimTailCancelationMI(Double_t *ampin, Double_t *ampout
1211 , Double_t norm, Double_t lambda
1215 // Special filter (M. Ivanov)
1220 Double_t l = TMath::Exp(-lambda*0.5);
1221 Double_t k = l*(1.0 - norm*lambda*0.5);
1225 // Initialize in[] and out[] goes 0 ... 2*n+19
1226 for (i = 0; i < n*2+20; i++) {
1232 in[1] = (ampin[0]+ampin[1])*0.5;
1234 // Add charge to the end
1235 for (i =-2; i < 22; i++) {
1236 // in[] goes 2*n-4, 2*n-3, ... , 2*n+19
1237 in[2*(n-1)+i] = ampin[n-1];
1240 for (i = 1; i < n-2; i++) {
1241 // in[] goes 2, 3, ... , 2*n-6, 2*n-5
1243 in[2*i+1] = (9.0 * (ampin[i]+ampin[i+1]) - (ampin[i-1]+ampin[i+2])) / 16.0;
1244 //in[2*i+1] = ((ampin[i]+ampin[i+1]))/2.0;
1250 for (i = 1; i <= 2*n; i++) {
1251 out[i] = in[i] + (k-l)*temp;
1252 temp = in[i] + k *temp;
1255 for (i = 0; i < n; i++) {
1256 //ampout[i] = out[2*i+1]; // org
1257 //ampout[i] = TMath::Max(out[2*i+1],0.0); // org
1258 ampout[i] = TMath::Max(out[2*i],0.0);
1263 //_____________________________________________________________________________________
1264 //the following filter uses AliTRDtrapAlu-class
1266 void AliTRDmcmSim::FilterSimDeConvExpEl(Int_t *source, Int_t *target, Int_t n, Int_t nexp) {
1267 //static Int_t count = 0;
1270 Double_t r1 = (Double_t)fFeeParam->GetTFr1();
1271 Double_t r2 = (Double_t)fFeeParam->GetTFr2();
1272 Double_t c1 = (Double_t)fFeeParam->GetTFc1();
1273 Double_t c2 = (Double_t)fFeeParam->GetTFc2();
1277 //it is assumed that r1,r2,c1,c2 are given such, that the configuration values are in the ranges according to TRAP-manual
1278 //parameters need to be adjusted
1279 AliTRDtrapAlu lambdaL;
1280 AliTRDtrapAlu lambdaS;
1281 AliTRDtrapAlu alphaL;
1282 AliTRDtrapAlu alphaS;
1284 AliTRDtrapAlu correction;
1285 AliTRDtrapAlu result;
1289 AliTRDtrapAlu bSource;
1298 lambdaL.AssignDouble(TMath::Exp(-dt/r1));
1299 lambdaS.AssignDouble(TMath::Exp(-dt/r2));
1300 alphaL.AssignDouble(c1); // in AliTRDfeeParam the number of exponentials is set and also the according time constants
1301 alphaS.AssignDouble(c2); // later it should be: alphaS=1-alphaL
1303 //data is enlarged to 12 bits, including 2 bits after the comma; class AliTRDtrapAlu is used to handle arithmetics correctly
1304 correction.Init(10,2);
1310 for(Int_t i = 0; i < n; i++) {
1311 bSource.AssignInt(source[i]);
1312 result = bSource - correction; // subtraction can produce an underflow
1313 if(result.GetSign() == kTRUE) {
1314 result.AssignInt(0);
1317 //target[i] = result.GetValuePre(); // later, target and source should become AliTRDtrapAlu,too in order to simulate the 10+2Bits through the filter properly
1319 target[i] = result.GetValue(); // 12 bit-value; to get the corresponding integer value, target must be shifted: target>>2
1321 //printf("target-Wert zur Zeit %d : %d",i,target[i]);
1324 bufL = bufL + (result * alphaL);
1325 bufL = bufL * lambdaL;
1327 bufS = bufS + (result * alphaS);
1328 bufS = bufS * lambdaS; // eventually this should look like:
1329 // bufS = (bufS + (result - result * alphaL)) * lambdaS // alphaS=1-alphaL; then alphaS-variable is not needed any more
1331 correction = bufL + bufS; //check for overflow intrinsic; if overflowed, correction is set to 0x03FF
1343 //__________________________________________________________________________________
1346 // in order to use the Tracklets, please first
1347 // -- set AliTRDfeeParam::fgkTracklet to kTRUE, in order to switch on Tracklet-calculation
1348 // -- set AliTRDfeeParam::fgkTFtype to 3, in order to use the new tail cancellation filter
1349 // currently tracklets from filtered digits are only given when setting fgkTFtype (AliTRDfeeParam) to 3
1350 // -- set AliTRDfeeParam::fgkMCTrackletOutput to kTRUE, if you want to use the Tracklet output container with information about the Tracklet position (MCM, channel number)
1352 // The code is designed such that the less possible calculations with AliTRDtrapAlu class-objects are performed; whenever possible calculations are done with doubles or integers and the results are transformed into the right format
1354 void AliTRDmcmSim::Tracklet(){
1355 // tracklet calculation
1356 // if you use this code after a simulation, please make sure the same filter-settings as in the simulation are set in AliTRDfeeParam
1358 if(!CheckInitialized()){ return; }
1360 Bool_t filtered = kTRUE;
1366 if(fADCT[0][0]==-1){ // check if filter was applied
1368 for( Int_t iadc = 0 ; iadc < fNADC; iadc++ ) {
1369 for( Int_t iT = 0 ; iT < fNTimeBin ; iT++ ) {
1370 data.AssignInt(fADCR[iadc][iT]);
1371 fADCT[iadc][iT] = data.GetValue(); // all incoming values are positive 10+2 bit values; if el.filter was called, this is done correctly
1377 // the online ordering of mcm's is reverse to the TRAP-manual-ordering! reverse fADCT (to be consistent to TRAP), then do all calculations
1379 Int_t** rev0 = new Int_t *[fNADC];
1380 Int_t** rev1 = new Int_t *[fNADC];
1382 for( Int_t iadc = 0 ; iadc < fNADC; iadc++ ) {
1383 rev0[iadc] = new Int_t[fNTimeBin];
1384 rev1[iadc] = new Int_t[fNTimeBin];
1385 for( Int_t iT = 0; iT < fNTimeBin; iT++) {
1386 if( iadc <= fNADC-iadc-1 ) {
1387 rev0[iadc][iT] = fADCT[fNADC-iadc-1][iT];
1388 rev1[iadc][iT] = fADCT[iadc][iT];
1389 fADCT[iadc][iT] = rev0[iadc][iT];
1392 rev0[iadc][iT] = rev1[fNADC-iadc-1][iT];
1393 fADCT[iadc][iT] = rev0[iadc][iT];
1397 for( Int_t iadc = 0 ; iadc < fNADC; iadc++ ) {
1398 delete[] rev0[iadc];
1399 delete[] rev1[iadc];
1408 // get the filtered pedestal; supports only electronic tail-cancellation filter
1409 AliTRDtrapAlu filPed;
1411 Int_t *ieffped = new Int_t[fNTimeBin];
1412 for(Int_t iT = 0; iT < fNTimeBin; iT++){
1416 if( filtered == kTRUE ) {
1417 if( fFeeParam->IsPFon() ){
1418 ep = fFeeParam->GetPFeffectPedestal();
1420 Int_t nexp = fFeeParam->GetTFnExp();
1421 Int_t *isource = new Int_t[fNTimeBin];
1423 filPed.AssignInt(ep);
1424 Int_t epf = filPed.GetValue();
1425 for(Int_t iT = 0; iT < fNTimeBin; iT++){
1430 if( fFeeParam->IsTFon() ) {
1431 FilterSimDeConvExpEl( isource, ieffped, fNTimeBin, nexp);
1437 //the following values should go to AliTRDfeeParam once they are defined; then they have to be read in properly
1438 //naming follows conventions in TRAP-manual
1441 Bool_t bVBY = kTRUE; // cluster-verification bypass
1443 Double_t cQTParam = 0; // cluster quality threshold; granularity 2^-10; range: 0<=cQT/2^-10<=2^-4 - 2^-10
1444 AliTRDtrapAlu cQTAlu;
1445 cQTAlu.Init(1,10,0,63);
1446 cQTAlu.AssignDouble(cQTParam);
1447 Int_t cQT = cQTAlu.GetValue();
1450 Int_t tFS = fFeeParam->GetLinearFitStart(); // linear fit start
1451 Int_t tFE = fFeeParam->GetLinearFitEnd(); // linear fit stop
1453 // charge accumulators
1454 Int_t tQS0 = fFeeParam->GetQacc0Start(); // start-time for charge-accumulator 0
1455 Int_t tQE0 = fFeeParam->GetQacc0End(); // stop-time for charge-accumulator 0
1456 Int_t tQS1 = fFeeParam->GetQacc1Start(); // start-time for charge-accumulator 1
1457 Int_t tQE1 = fFeeParam->GetQacc1End(); // stop-time for charge-accumulator 1
1458 // values set such that tQS0=tFS; tQE0=tQS1-1; tFE=tQE1; want to do (QS0+QS1)/N
1460 Double_t cTHParam = (Double_t)fFeeParam->GetMinClusterCharge(); // cluster charge threshold
1461 AliTRDtrapAlu cTHAlu;
1463 cTHAlu.AssignDouble(cTHParam);
1464 Int_t cTH = cTHAlu.GetValue(); // cTH used for comparison
1472 List_t selection[7]; // list with 7 elements
1473 List_t *list = NULL;
1474 List_t *listLeft = NULL;
1476 Int_t* qsum = new Int_t[fNADC];
1479 AliTRDtrapAlu qsumAlu;
1480 qsumAlu.Init(12,2); // charge sum will be 12+2 bits
1481 AliTRDtrapAlu dCOGAlu;
1482 dCOGAlu.Init(1,7,0,127); // COG will be 1+7 Bits; maximum 1 - 2^-7 for LUT
1483 AliTRDtrapAlu yrawAlu;
1484 yrawAlu.Init(1,8,-1,255);
1486 yAlu.Init(1,16,-1,0xFF00); // only first 8 past-comma bits filled;additional 8 bits for accuracy;maximum 1 - 2^-8; sign is given by + or -
1488 xAlu.Init(5,8); // 8 past-comma bits because value will be added/multiplied to another value with this accuracy
1489 AliTRDtrapAlu xxAlu;
1491 AliTRDtrapAlu yyAlu;
1492 yyAlu.Init(1,16,0,0xFFFF); // maximum is 2^16-1; 16Bit for past-commas
1493 AliTRDtrapAlu xyAlu;
1497 AliTRDtrapAlu XXAlu;
1500 YAlu.Init(5,8); // 14 bit, 1 is sign-bit; therefore only 13 bit
1501 AliTRDtrapAlu YYAlu;
1503 AliTRDtrapAlu XYAlu;
1504 XYAlu.Init(8,8); // 17 bit, 1 is sign-bit; therefore only 16 bit
1505 AliTRDtrapAlu qtruncAlu;
1506 qtruncAlu.Init(12,0);
1507 AliTRDtrapAlu QT0Alu;
1509 AliTRDtrapAlu QT1Alu;
1512 AliTRDtrapAlu oneAlu;
1516 AliTRDtrapAlu inverseNAlu;
1517 inverseNAlu.Init(1,8); // simulates the LUT for 1/N
1518 AliTRDtrapAlu MeanChargeAlu; // mean charge in ADC counts
1519 MeanChargeAlu.Init(8,0);
1520 AliTRDtrapAlu TotalChargeAlu;
1521 TotalChargeAlu.Init(17,8);
1522 //nr of post comma bits should be the same for inverseN and TotalCharge
1525 SetPosLUT(); // initialize the position correction LUT for this MCM;
1528 // fit-sums; remapping!; 0,1,2->0; 1,2,3->1; ... 18,19,20->18
1529 Int_t *X = new Int_t[fNADC-2];
1530 Int_t *XX = new Int_t[fNADC-2];
1531 Int_t *Y = new Int_t[fNADC-2];
1532 Int_t *YY = new Int_t[fNADC-2];
1533 Int_t *XY = new Int_t[fNADC-2];
1534 Int_t *N = new Int_t[fNADC-2];
1535 Int_t *QT0 = new Int_t[fNADC-2]; // accumulated charge
1536 Int_t *QT1 = new Int_t[fNADC-2]; // accumulated charge
1538 for (Int_t iCol = 0; iCol < fNADC-2; iCol++) {
1540 // initialize fit-sums
1552 filPed.Init(7,2); // convert filtered pedestal into 7+2Bits
1554 for(Int_t iT = 0; iT < fNTimeBin; iT++){
1556 if(iT<tFS || iT>=tFE) continue; // linear fit yes/no?
1559 Int_t portChannel[4] = {-1,-1,-1,-1};
1560 Int_t clusterCharge[4] = {0,0,0,0};
1561 Int_t leftCharge[4] = {0,0,0,0};
1562 Int_t centerCharge[4] = {0,0,0,0};
1563 Int_t rightCharge[4] = {0,0,0,0};
1567 filPed.AssignFormatted(ieffped[iT]); // no size-checking when using AssignFormatted; ieffped>=0
1568 filPed = filPed; // this checks the size
1570 ieffped[iT] = filPed.GetValue();
1572 for(Int_t i = 0; i<7; i++){
1573 selection[i].next = NULL;
1574 selection[i].iadc = -1; // value of -1: invalid adc
1575 selection[i].value = 0;
1578 // selection[0] is starting list-element; just for pointing
1580 // loop over inner adc's
1581 for (Int_t iCol = 1; iCol < fNADC-1; iCol++) {
1583 Int_t left = fADCT[iCol-1][iT];
1584 Int_t center = fADCT[iCol][iT];
1585 Int_t right = fADCT[iCol+1][iT];
1587 Int_t sum = left + center + right; // cluster charge sum
1588 qsumAlu.AssignFormatted(sum);
1589 qsumAlu = qsumAlu; // size-checking; redundant
1591 qsum[iCol] = qsumAlu.GetValue();
1593 //hit detection and masking
1596 if(qsum[iCol]>=(cTH + 3*ieffped[iT])){ // effective pedestal of all three channels must be added to cTH(+20); this is not parallel to TRAP manual; maybe cTH has to be adjusted in fFeeParam; therefore channels are not yet reduced by their pedestal
1597 mark |= 1; // marker
1606 // get selection of 6 adc's and sort,starting with greatest values
1608 //read three from right side and sort (primitive sorting algorithm)
1609 Int_t i = 0; // adc number
1610 Int_t j = 1; // selection number
1611 while(i<fNADC-2 && j<=3){
1613 if( ((mark>>(i-1)) & 1) == 1) {
1614 selection[j].iadc = fNADC-1-i;
1615 selection[j].value = qsum[fNADC-1-i]>>6; // for hit-selection only the first 8 out of the 14 Bits are used for comparison
1617 // insert into sorted list
1618 listLeft = &selection[0];
1619 list = listLeft->next;
1622 while((list->next != NULL) && (selection[j].value <= list->value)){
1627 if(selection[j].value<=list->value){
1628 selection[j].next = list->next;
1629 list->next = &selection[j];
1632 listLeft->next = &selection[j];
1633 selection[j].next = list;
1637 listLeft->next = &selection[j];
1638 selection[j].next = list;
1646 // read three from left side
1648 while(k>i && j<=6) {
1649 if( ((mark>>(k-1)) & 1) == 1) {
1650 selection[j].iadc = fNADC-1-k;
1651 selection[j].value = qsum[fNADC-1-k]>>6;
1653 listLeft = &selection[0];
1654 list = listLeft->next;
1657 while((list->next != NULL) && (selection[j].value <= list->value)){
1662 if(selection[j].value<=list->value){
1663 selection[j].next = list->next;
1664 list->next = &selection[j];
1667 listLeft->next = &selection[j];
1668 selection[j].next = list;
1672 listLeft->next = &selection[j];
1673 selection[j].next = list;
1681 // get the four with greatest charge-sum
1682 list = &selection[0];
1683 for(i = 0; i<4; i++){
1684 if(list->next == NULL) continue;
1686 if(list->iadc == -1) continue;
1687 Int_t adc = list->iadc; // channel number with selected hit
1689 // the following arrays contain the four chosen channels in 1 time-bin
1690 portChannel[i] = adc;
1691 clusterCharge[i] = qsum[adc];
1692 leftCharge[i] = fADCT[adc-1][iT] - ieffped[iT]; // reduce by filtered pedestal (pedestal is part of the signal)
1693 centerCharge[i] = fADCT[adc][iT] - ieffped[iT];
1694 rightCharge[i] = fADCT[adc+1][iT] - ieffped[iT];
1699 // cluster verification
1701 for(i = 0; i<4; i++){
1702 Int_t lr = leftCharge[i]*rightCharge[i]*1024;
1703 Int_t cc = centerCharge[i]*centerCharge[i]*cQT;
1705 portChannel[i] = -1; // set to invalid address
1706 clusterCharge[i] = 0;
1711 // fit-sums of valid channels
1712 // local hit position
1713 for(i = 0; i<4; i++){
1714 if (centerCharge[i] == 0) {
1715 portChannel[i] = -1;
1716 }// prevent division by 0
1718 if (portChannel[i] == -1) continue;
1720 Double_t dCOG = (Double_t)(rightCharge[i]-leftCharge[i])/centerCharge[i];
1722 Bool_t sign = (dCOG>=0.0) ? kFALSE : kTRUE;
1723 dCOG = (sign == kFALSE) ? dCOG : -dCOG; // AssignDouble doesn't allow for signed doubles
1724 dCOGAlu.AssignDouble(dCOG);
1725 Int_t iLUTpos = dCOGAlu.GetValue(); // steers position in LUT
1728 yrawAlu.AssignDouble(dCOG);
1729 Int_t iCOG = yrawAlu.GetValue();
1730 Int_t y = iCOG + fPosLUT[iLUTpos % 128]; // local position in pad-units
1731 yrawAlu.AssignFormatted(y); // 0<y<1
1732 yAlu = yrawAlu; // convert to 16 past-comma bits
1734 if(sign == kTRUE) yAlu.SetSign(-1); // buffer width of 9 bits; sign on real (not estimated) position
1735 xAlu.AssignInt(iT); // buffer width of 5 bits
1738 xxAlu = xAlu * xAlu; // buffer width of 10 bits -> fulfilled by x*x
1740 yyAlu = yAlu * yAlu; // buffer width of 16 bits
1742 xyAlu = xAlu * yAlu; // buffer width of 14 bits
1744 Int_t adc = portChannel[i]-1; // remapping! port-channel contains channel-nr. of inner adc's (1..19; mapped to 0..18)
1746 // calculate fit-sums recursively
1747 // interpretation of their bit-length is given as comment
1749 // be aware that the accuracy of the result of a calculation is always determined by the accuracy of the less accurate value
1751 XAlu.AssignFormatted(X[adc]);
1752 XAlu = XAlu + xAlu; // buffer width of 9 bits
1753 X[adc] = XAlu.GetValue();
1755 XXAlu.AssignFormatted(XX[adc]);
1756 XXAlu = XXAlu + xxAlu; // buffer width of 14 bits
1757 XX[adc] = XXAlu.GetValue();
1760 YAlu.AssignFormatted(-Y[adc]); // make sure that only positive values are assigned; sign-setting must be done by hand
1764 YAlu.AssignFormatted(Y[adc]);
1768 YAlu = YAlu + yAlu; // buffer width of 14 bits (8 past-comma);
1769 Y[adc] = YAlu.GetSignedValue();
1771 YYAlu.AssignFormatted(YY[adc]);
1772 YYAlu = YYAlu + yyAlu; // buffer width of 21 bits (16 past-comma)
1773 YY[adc] = YYAlu.GetValue();
1776 XYAlu.AssignFormatted(-XY[adc]);
1780 XYAlu.AssignFormatted(XY[adc]);
1784 XYAlu = XYAlu + xyAlu; // buffer allows 17 bits (8 past-comma)
1785 XY[adc] = XYAlu.GetSignedValue();
1787 N[adc] = N[adc] + 1;
1790 // accumulated charge
1791 qsumAlu.AssignFormatted(qsum[adc+1]); // qsum was not remapped!
1792 qtruncAlu = qsumAlu;
1794 if(iT>=tQS0 && iT<=tQE0){
1795 QT0Alu.AssignFormatted(QT0[adc]);
1796 QT0Alu = QT0Alu + qtruncAlu;
1797 QT0[adc] = QT0Alu.GetValue();
1798 //interpretation of QT0 as 12bit-value (all pre-comma); is this as it should be done?; buffer allows 15 Bit
1801 if(iT>=tQS1 && iT<=tQE1){
1802 QT1Alu.AssignFormatted(QT1[adc]);
1803 QT1Alu = QT1Alu + qtruncAlu;
1804 QT1[adc] = QT1Alu.GetValue();
1805 //interpretation of QT1 as 12bit-value; buffer allows 16 Bit
1809 // remapping is done!!
1815 // tracklet-assembly
1817 // put into AliTRDfeeParam and take care that values are in proper range
1818 const Int_t cTCL = 1; // left adc: number of hits; 8<=TCL<=31 (?? 1<=cTCL<+8 ??)
1819 const Int_t cTCT = 8; // joint number of hits; 8<=TCT<=31; note that according to TRAP manual this number cannot be lower than 8; however it should be adjustable to the number of hits in the fit time range (40%)
1821 Int_t mPair = 0; // marker for possible tracklet pairs
1822 Int_t* hitSum = new Int_t[fNADC-3];
1823 // hitSum[0] means: hit sum of remapped channels 0 and 1; hitSum[17]: 17 and 18;
1825 // check for all possible tracklet-pairs of adjacent channels (two are merged); mark the left channel of the chosen pairs
1826 for (Int_t iCol = 0; iCol < fNADC-3; iCol++) {
1827 hitSum[iCol] = N[iCol] + N[iCol+1];
1828 if ((N[iCol]>=cTCL) && (hitSum[iCol]>=cTCT)) {
1829 mPair |= 1; // mark as possible channel-pair
1836 List_t* selectPair = new List_t[fNADC-2]; // list with 18 elements (0..18) containing the left channel-nr and hit sums
1837 // selectPair[18] is starting list-element just for pointing
1838 for(Int_t k = 0; k<fNADC-2; k++){
1839 selectPair[k].next = NULL;
1840 selectPair[k].iadc = -1; // invalid adc
1841 selectPair[k].value = 0;
1848 // read marker and sort according to hit-sum
1850 Int_t adcL = 0; // left adc-channel-number (remapped)
1851 Int_t selNr = 0; // current number in list
1853 // insert marked channels into list and sort according to hit-sum
1854 while(adcL < fNADC-3 && selNr < fNADC-3){
1856 if( ((mPair>>((fNADC-4)-(adcL))) & 1) == 1) {
1857 selectPair[selNr].iadc = adcL;
1858 selectPair[selNr].value = hitSum[adcL];
1860 listLeft = &selectPair[fNADC-3];
1861 list = listLeft->next;
1864 while((list->next != NULL) && (selectPair[selNr].value <= list->value)){
1869 if(selectPair[selNr].value <= list->value){
1870 selectPair[selNr].next = list->next;
1871 list->next = &selectPair[selNr];
1874 listLeft->next = &selectPair[selNr];
1875 selectPair[selNr].next = list;
1880 listLeft->next = &selectPair[selNr];
1881 selectPair[selNr].next = list;
1889 //select up to 4 channels with maximum number of hits
1890 Int_t lpairChannel[4] = {-1,-1,-1,-1}; // save the left channel-numbers of pairs with most hit-sum
1891 Int_t rpairChannel[4] = {-1,-1,-1,-1}; // save the right channel, too; needed for detecting double tracklets
1892 list = &selectPair[fNADC-3];
1894 for (Int_t i = 0; i<4; i++) {
1895 if(list->next == NULL) continue;
1897 if(list->iadc == -1) continue;
1898 lpairChannel[i] = list->iadc; // channel number with selected hit
1899 rpairChannel[i] = lpairChannel[i]+1;
1902 // avoid submission of double tracklets
1903 for (Int_t i = 3; i>0; i--) {
1904 for (Int_t j = i-1; j>-1; j--) {
1905 if(lpairChannel[i] == rpairChannel[j]) {
1906 lpairChannel[i] = -1;
1907 rpairChannel[i] = -1;
1910 /* if(rpairChannel[i] == lpairChannel[j]) {
1911 lpairChannel[i] = -1;
1912 rpairChannel[i] = -1;
1918 // merging of the fit-sums of the remainig channels
1919 // assume same data-word-width as for fit-sums for 1 channel
1932 Int_t mMeanCharge[4];
1937 for (Int_t i = 0; i<4; i++){
1938 mADC[i] = -1; // set to invalid number
1952 oneAlu.AssignInt(1);
1953 one = oneAlu.GetValue(); // one with 8 past comma bits
1955 for (Int_t i = 0; i<4; i++){
1958 mADC[i] = lpairChannel[i]; // mapping of merged sums to left channel nr. (0,1->0; 1,2->1; ... 17,18->17)
1959 // the adc and pad-mapping should now be one to one: adc i is linked to pad i; TRAP-numbering
1960 Int_t madc = mADC[i];
1961 if (madc == -1) continue;
1963 YAlu.AssignInt(N[rpairChannel[i]]);
1964 Int_t wpad = YAlu.GetValue(); // enlarge hit counter of right channel by 8 past-comma bits; YAlu can have 5 pre-comma bits (values up to 63); hit counter<=nr of time bins (24)
1966 mN[i] = hitSum[madc];
1968 // don't merge fit sums in case of a stand-alone tracklet (consisting of only 1 channel); in that case only left channel makes up the fit sums
1969 if (N[madc+1] == 0) {
1970 mQT0[i] = QT0[madc];
1971 mQT1[i] = QT1[madc];
1976 // is it ok to do the size-checking for the merged fit-sums with the same format as for single-channel fit-sums?
1978 mQT0[i] = QT0[madc] + QT0[madc+1];
1979 QT0Alu.AssignFormatted(mQT0[i]);
1980 QT0Alu = QT0Alu; // size-check
1981 mQT0[i] = QT0Alu.GetValue(); // write back
1983 mQT1[i] = QT1[madc] + QT1[madc+1];
1984 QT1Alu.AssignFormatted(mQT1[i]);
1986 mQT1[i] = QT1Alu.GetValue();
1989 // calculate the mean charge in adc values; later to be replaced by electron likelihood
1990 mMeanCharge[i] = mQT0[i] + mQT1[i]; // total charge
1991 mMeanCharge[i] = mMeanCharge[i]>>2; // losing of accuracy; accounts for high mean charge
1992 // simulate LUT for 1/N; LUT is fed with the double-accurate pre-calculated value of 1/N; accuracy of entries has to be adjusted to real TRAP
1994 inverseNAlu.AssignDouble(invN);
1995 inverseN = inverseNAlu.GetValue();
1996 mMeanCharge[i] = mMeanCharge[i] * inverseN; // now to be interpreted with 8 past-comma bits
1997 TotalChargeAlu.AssignFormatted(mMeanCharge[i]);
1998 TotalChargeAlu = TotalChargeAlu;
1999 MeanChargeAlu = TotalChargeAlu;
2000 mMeanCharge[i] = MeanChargeAlu.GetValue();
2002 // this check is not necessary; it is just for efficiency reasons
2003 if (N[madc+1] == 0) {
2012 mX[i] = X[madc] + X[madc+1];
2013 XAlu.AssignFormatted(mX[i]);
2015 mX[i] = XAlu.GetValue();
2017 mXX[i] = XX[madc] + XX[madc+1];
2018 XXAlu.AssignFormatted(mXX[i]);
2020 mXX[i] = XXAlu.GetValue();
2023 mY[i] = Y[madc] + Y[madc+1] + wpad;
2025 YAlu.AssignFormatted(-mY[i]);
2029 YAlu.AssignFormatted(mY[i]);
2033 mY[i] = YAlu.GetSignedValue();
2035 mXY[i] = XY[madc] + XY[madc+1] + X[madc+1]*one; // multiplication by one to maintain the data format
2038 XYAlu.AssignFormatted(-mXY[i]);
2042 XYAlu.AssignFormatted(mXY[i]);
2046 mXY[i] = XYAlu.GetSignedValue();
2048 mYY[i] = YY[madc] + YY[madc+1] + 2*Y[madc+1]*one+ wpad*one;
2050 YYAlu.AssignFormatted(-mYY[i]);
2054 YYAlu.AssignFormatted(mYY[i]);
2059 mYY[i] = YYAlu.GetSignedValue();
2064 // calculation of offset and slope from the merged fit-sums;
2065 // YY is needed for some error measure only; still to be done
2066 // be aware that all values are relative values (scale: timebin-width; pad-width) and are integer values on special scale
2068 // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
2069 // !!important note: the offset is calculated from hits in the time bin range between tFS and tFE; it corresponds to the value at the height of the time bin tFS which does NOT need to correspond to the upper side of the drift !!
2070 // !!volume (cathode wire plane). The offset cannot be rescaled as long as it is unknown which is the first time bin that contains hits from the drift region and thus to which distance from the cathode plane tFS corresponds. !!
2071 // !!This has to be taken into account by the GTU. Furthermore a Lorentz correction might have to be applied to the offset (see below). !!
2072 // !!In this implementation it is assumed that no miscalibration containing changing drift velocities in the amplification region is used. !!
2073 // !!The corrections to the offset (e.g. no ExB correction applied as offset is supposed to be on top of drift region; however not at anode wire, so some inclination of drifting clusters due to Lorentz angle exists) are only !!
2074 // !!valid (in approximation) if tFS is close to the beginning of the drift region. !!
2075 // !!The slope however can be converted to a deflection length between electrode and cathode wire plane as it is clear that the drift region is sampled 20 times !!
2076 // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
2078 // which formats should be chosen?
2079 AliTRDtrapAlu denomAlu;
2080 denomAlu.Init(20,8);
2081 AliTRDtrapAlu numAlu;
2083 // is this enough pre-comma place? covers the range of the 13 bit-word of the transmitted offset
2084 // offset measured in coord. of left channel must be between -0.5 and 1.5; 14 pre-comma bits because numerator can be big
2086 for (Int_t i = 0; i<4; i++) {
2087 if (mADC[i] == -1) continue;
2089 Int_t num0 = (mN[i]*mXX[i]-mX[i]*mX[i]);
2091 denomAlu.AssignInt(-num0); // num0 does not have to be interpreted as having past-comma bits -> AssignInt
2092 denomAlu.SetSign(-1);
2095 denomAlu.AssignInt(num0);
2096 denomAlu.SetSign(1);
2099 Int_t num1 = mN[i]*mXY[i] - mX[i]*mY[i];
2101 numAlu.AssignFormatted(-num1); // value of num1 is already formatted to have 8 past-comma bits
2105 numAlu.AssignFormatted(num1);
2108 numAlu = numAlu/denomAlu;
2109 mSlope[i] = numAlu.GetSignedValue();
2111 Int_t num2 = mXX[i]*mY[i] - mX[i]*mXY[i];
2114 numAlu.AssignFormatted(-num2);
2118 numAlu.AssignFormatted(num2);
2122 numAlu = numAlu/denomAlu;
2125 mOffset[i] = numAlu.GetSignedValue();
2127 denomAlu.SetSign(1);
2130 //numAlu.AssignInt(mADC[i]+1); // according to TRAP-manual but trafo not to middle of chamber (0.5 channels away)
2131 numAlu.AssignDouble((Double_t)mADC[i] + 1.5); // numAlu has enough pre-comma place for that; correct trafo, best values
2132 mOffset[i] = mOffset[i] + numAlu.GetValue(); // transform offset to a coord.system relative to chip; +1 to avoid neg. values
2134 // up to here: adc-mapping according to TRAP manual and in line with pad-col mapping
2135 // reverse adc-counting to be again in line with the online mapping
2136 mADC[i] = fNADC - 4 - mADC[i]; // fNADC-4-mADC[i]: 0..17; remapping necessary;
2137 mADC[i] = mADC[i] + 2;
2138 // +2: mapping onto original ADC-online-counting: inner adc's corresponding to a chip's pasa: number 2..19
2141 // adc-counting is corresponding to online mapping; use AliTRDfeeParam::GetPadColFromADC to get the pad to which adc is connected;
2142 // pad-column mapping is reverse to adc-online mapping; TRAP adc-mapping is in line with pad-mapping (increase in same direction);
2144 // transform parameters to the local coordinate-system of a stack (used by GTU)
2145 AliTRDpadPlane* padPlane = fGeo->CreatePadPlane(fLayer,fStack);
2147 Double_t padWidthI = padPlane->GetWidthIPad()*10.0; // get values in cm; want them in mm
2148 //Double_t padWidthO = padPlane->GetWidthOPad()*10; // difference between outer pad-widths not included; in real TRAP??
2150 // difference between width of inner and outer pads of a row is not accounted for;
2152 Double_t magField = 0.4; // z-component of magnetic field in Tesla; adjust to current simulation!!; magnetic field can hardly be evaluated for the position of each mcm
2153 Double_t eCharge = 0.3; // unit charge in (GeV/c)/m*T
2154 Double_t ptMin = 2.3; // minimum transverse momentum (GeV/c); to be adjusted(?)
2156 Double_t granularityOffset = 0.160; // granularity for offset in mm
2157 Double_t granularitySlope = 0.140; // granularity for slope in mm
2159 // get the coordinates in SM-system; parameters:
2161 Double_t zPos = (padPlane->GetRowPos(fRow))*10.0; // z-position of the MCM; fRow is counted on a chamber; SM consists of 5
2162 // zPos is position of pad-borders;
2163 Double_t zOffset = 0.0;
2164 if ( fRow == 0 || fRow == 15 ) {
2165 zOffset = padPlane->GetLengthOPad();
2168 zOffset = padPlane->GetLengthIPad();
2170 zOffset = (-1.0) * zOffset/2.0;
2171 // turn zPos to be z-coordinate at middle of pad-row
2172 zPos = zPos + zOffset;
2175 Double_t xPos = 0.0; // x-position of the upper border of the drift-chamber of actual layer
2176 Int_t icol = 0; // column-number of adc-channel
2177 Double_t yPos[4]; // y-position of the pad to which ADC is connected
2178 Double_t dx = 30.0; // height of drift-chamber in mm; maybe retrieve from AliTRDGeometry
2179 Double_t freqSample = fFeeParam->GetSamplingFrequency(); // retrieve the sampling frequency (10.019750 MHz)
2180 Double_t vdrift = fCal->GetVdriftAverage(fChaId); // averaged drift velocity for this detector (1.500000 cm/us)
2181 Int_t nrOfDriftTimeBins = Int_t(dx/10.0*freqSample/vdrift); // the number of time bins in the drift region (20)
2182 Int_t nrOfAmplTimeBins = 2; // the number of time bins between anode wire and cathode wires in ampl.region (3.5mm)(guess)(suppose v_drift+3.5cm/us there=>all clusters arrive at anode wire within one time bin (100ns))
2183 Int_t nrOfOffsetCorrTimeBins = tFS - nrOfAmplTimeBins - 1; // -1 is to be conservative; offset correction will not remove the shift but is supposed to improve it; if tFS = 5, 2 drift time bins before tFS are assumed
2184 if(nrOfOffsetCorrTimeBins < 0) nrOfOffsetCorrTimeBins = 0;// don't apply offset correction if no drift time bins before tFS can be assumed
2185 Double_t lorTan = fCal->GetOmegaTau(vdrift,magField); // tan of the Lorentz-angle for this detector; could be evaluated and set as a parameter for each mcm
2186 //Double_t lorAngle = 7.0; // Lorentz-angle in degrees
2187 Double_t tiltAngle = padPlane->GetTiltingAngle(); // sign-respecting tilting angle of pads in actual layer
2188 Double_t tiltTan = TMath::Tan(TMath::Pi()/180.0 * tiltAngle);
2189 //Double_t lorTan = TMath::Tan(TMath::Pi()/180.0 * lorAngle);
2191 Double_t alphaMax[4]; // maximum deflection from the direction to the primary vertex; granularity of hit pads
2192 Double_t slopeMin[4]; // local limits for the deflection
2193 Double_t slopeMax[4];
2194 Int_t mslopeMin[4]; // in granularity units; to be compared to mSlope[i]
2198 // x coord. of upper side of drift chambers in local SM-system (in mm)
2199 // obtained by evaluating the x-range of the hits; should be crosschecked; only drift, not amplification region taken into account (30mm);
2200 // the y-deflection is given as difference of y between lower and upper side of drift-chamber, not pad-plane;
2223 // calculation of offset-correction n:
2225 Int_t nCorrectOffset = (fRobPos % 2 == 0) ? ((fMcmPos % 4)) : ( 4 + (fMcmPos % 4));
2227 nCorrectOffset = (nCorrectOffset - 4)*18 - 1;
2228 if (nCorrectOffset < 0) {
2229 numAlu.AssignInt(-nCorrectOffset);
2233 numAlu.AssignInt(nCorrectOffset);
2236 nCorrectOffset = numAlu.GetSignedValue();
2238 // the Lorentz correction to the offset
2239 Double_t lorCorrectOffset = lorTan *(Double_t)nrOfOffsetCorrTimeBins*vdrift*10.0/freqSample; // Lorentz offset correction in mm
2242 lorCorrectOffset = lorCorrectOffset/padWidthI; // Lorentz correction in pad width units
2244 if(lorCorrectOffset < 0) {
2245 numAlu.AssignDouble(-lorCorrectOffset);
2249 numAlu.AssignDouble(lorCorrectOffset);
2253 Int_t mlorCorrectOffset = numAlu.GetSignedValue();
2256 Double_t mCorrectOffset = padWidthI/granularityOffset; // >= 0.0
2258 // calculation of slope-correction
2260 // this is only true for tracks coming (approx.) from primary vertex
2261 // everything is evaluated for a tracklet covering the whole drift chamber
2262 Double_t cCorrectSlope = (-lorTan*dx + zPos/xPos*dx*tiltTan)/granularitySlope;
2263 // Double_t cCorrectSlope = zPos/xPos*dx*tiltTan/granularitySlope;
2264 // zPos can be negative! for track from primary vertex: zOut-zIn > 0 <=> zPos > 0
2266 if (cCorrectSlope < 0) {
2267 numAlu.AssignDouble(-cCorrectSlope);
2271 numAlu.AssignDouble(cCorrectSlope);
2274 cCorrectSlope = numAlu.GetSignedValue();
2276 // convert slope to deflection between upper and lower drift-chamber position (slope is given in pad-unit/time-bins)
2277 // different pad-width of outer pads of a pad-plane not taken into account
2278 // note that the fit was only done in the range tFS to tFE, however this range does not need to cover the whole drift region (neither start nor end of it)
2279 // however the tracklets are supposed to be a fit in the drift region thus the linear function is stretched to fit the drift region of 30 mm
2282 Double_t mCorrectSlope = (Double_t)(nrOfDriftTimeBins)*padWidthI/granularitySlope; // >= 0.0
2284 AliTRDtrapAlu correctAlu;
2285 correctAlu.Init(20,8);
2287 AliTRDtrapAlu offsetAlu;
2288 offsetAlu.Init(13,0,-0x1000,0x0FFF); // 13 bit-word; 2-complement (1 sign-bit); asymmetric range
2290 AliTRDtrapAlu slopeAlu;
2291 slopeAlu.Init(7,0,-0x40,0x3F); // 7 bit-word; 2-complement (1 sign-bit);
2293 for (Int_t i = 0; i<4; i++) {
2295 if (mADC[i] == -1) continue;
2297 icol = fFeeParam->GetPadColFromADC(fRobPos,fMcmPos,mADC[i]); // be aware that mADC[i] contains the ADC-number according to online-mapping
2298 yPos[i] = (padPlane->GetColPos(icol))*10.0;
2303 correctAlu.AssignDouble(mCorrectOffset); // done because max. accuracy is 8 bit
2304 mCorrectOffset = correctAlu.GetValueWhole(); // cut offset correction to 8 past-comma bit accuracy
2305 mOffset[i] = (Int_t)((mCorrectOffset)*(Double_t)(mOffset[i] + nCorrectOffset - mlorCorrectOffset));
2306 //mOffset[i] = mOffset[i]*(-1); // adjust to direction of y-axes in online simulation
2308 if (mOffset[i] < 0) {
2309 numAlu.AssignFormatted(-mOffset[i]);
2313 numAlu.AssignFormatted(mOffset[i]);
2318 mOffset[i] = offsetAlu.GetSignedValue();
2323 correctAlu.AssignDouble(mCorrectSlope);
2324 mCorrectSlope = correctAlu.GetValueWhole();
2326 mSlope[i] = (Int_t)((mCorrectSlope*(Double_t)mSlope[i]) + cCorrectSlope);
2328 if (mSlope[i] < 0) {
2329 numAlu.AssignFormatted(-mSlope[i]);
2333 numAlu.AssignFormatted(mSlope[i]);
2337 slopeAlu = numAlu; // here all past-comma values are cut, not rounded; alternatively add +0.5 before cutting (means rounding)
2338 mSlope[i] = slopeAlu.GetSignedValue();
2340 // local (LTU) limits for the deflection
2341 // ATan returns angles in radian
2342 alphaMax[i] = TMath::ASin(eCharge*magField/(2.0*ptMin)*(TMath::Sqrt(xPos*xPos + yPos[i]*yPos[i]))/1000.0); // /1000: mm->m
2343 slopeMin[i] = dx*(TMath::Tan(TMath::ATan(yPos[i]/xPos) - alphaMax[i]))/granularitySlope;
2344 slopeMax[i] = dx*(TMath::Tan(TMath::ATan(yPos[i]/xPos) + alphaMax[i]))/granularitySlope;
2346 if (slopeMin[i] < 0) {
2347 slopeAlu.AssignDouble(-slopeMin[i]);
2348 slopeAlu.SetSign(-1);
2351 slopeAlu.AssignDouble(slopeMin[i]);
2352 slopeAlu.SetSign(1);
2354 mslopeMin[i] = slopeAlu.GetSignedValue(); // the borders should lie inside the range of mSlope -> usage of slopeAlu again
2356 if (slopeMax[i] < 0) {
2357 slopeAlu.AssignDouble(-slopeMax[i]);
2358 slopeAlu.SetSign(-1);
2361 slopeAlu.AssignDouble(slopeMax[i]);
2362 slopeAlu.SetSign(1);
2364 mslopeMax[i] = slopeAlu.GetSignedValue();
2367 // suppress submission of tracks with low stiffness
2368 // put parameters in 32bit-word and submit (write to file as root-file; sort after SM, stack, layer, chamber)
2370 // sort tracklet-words in ascending y-order according to the offset (according to mADC would also be possible)
2371 // up to now they are sorted according to maximum hit sum
2372 // is the sorting really done in the TRAP-chip?
2374 Int_t order[4] = {-1,-1,-1,-1};
2375 Int_t wordnr = 0; // number of tracklet-words
2377 for(Int_t j = 0; j < fMaxTracklets; j++) {
2378 //if( mADC[j] == -1) continue;
2379 if( (mADC[j] == -1) || (mSlope[j] < mslopeMin[j]) || (mSlope[j] > mslopeMax[j])) continue; // this applies a pt-cut
2381 if( wordnr-1 == 0) {
2385 // wordnr-1>0, wordnr-1<4
2386 order[wordnr-1] = j;
2387 for( Int_t k = 0; k < wordnr-1; k++) {
2388 if( mOffset[j] < mOffset[order[k]] ) {
2389 for( Int_t l = wordnr-1; l > k; l-- ) {
2390 order[l] = order[l-1];
2399 // fill the bit-words in ascending order and without gaps
2400 UInt_t bitWord[4] = {0,0,0,0}; // attention: unsigned int to have real 32 bits (no 2-complement)
2401 for(Int_t j = 0; j < wordnr; j++) { // only "wordnr" tracklet-words
2402 //Bool_t rem1 = kTRUE;
2405 //bit-word is 2-complement and therefore without sign
2406 bitWord[j] = 1; // this is the starting 1 of the bit-word (at 33rd position); the 1 must be ignored
2414 /*printf("mean charge: %d\n",mMeanCharge[i]);
2415 printf("row: %d\n",fRow);
2416 printf("slope: %d\n",mSlope[i]);
2417 printf("pad position: %d\n",mOffset[i]);
2418 printf("channel: %d\n",mADC[i]);*/
2420 // electron probability (currently not implemented; the mean charge is just scaled)
2421 shift = (UInt_t)mMeanCharge[i];
2422 for(Int_t iBit = 0; iBit < 8; iBit++) {
2423 bitWord[j] = bitWord[j]<<1;
2424 bitWord[j] |= (shift>>(7-iBit))&1;
2429 shift = (UInt_t)fRow;
2430 for(Int_t iBit = 0; iBit < 4; iBit++) {
2431 bitWord[j] = bitWord[j]<<1;
2432 bitWord[j] |= (shift>>(3-iBit))&1;
2433 //printf("%d", (fRow>>(3-iBit))&1);
2436 // deflection length
2438 shift = (UInt_t)(-mSlope[i]);
2439 // shift2 is 2-complement of shift
2441 for(Int_t iBit = 1; iBit < 7; iBit++) {
2443 shift2 |= (1- (((shift)>>(6-iBit))&1) );
2444 //printf("%d",(1-((-mSlope[i])>>(6-iBit))&1));
2446 shift2 = shift2 + 1;
2448 for(Int_t iBit = 0; iBit < 7; iBit++) {
2449 bitWord[j] = bitWord[j]<<1;
2450 bitWord[j] |= (shift2>>(6-iBit))&1;
2451 //printf("%d",(1-((-mSlope[i])>>(6-iBit))&1));
2455 shift = (UInt_t)(mSlope[i]);
2456 bitWord[j] = bitWord[j]<<1;
2459 for(Int_t iBit = 1; iBit < 7; iBit++) {
2460 bitWord[j] = bitWord[j]<<1;
2461 bitWord[j] |= (shift>>(6-iBit))&1;
2462 //printf("%d",(mSlope[i]>>(6-iBit))&1);
2467 if(mOffset[i] < 0) {
2468 shift = (UInt_t)(-mOffset[i]);
2470 for(Int_t iBit = 1; iBit < 13; iBit++) {
2472 shift2 |= (1-(((shift)>>(12-iBit))&1));
2473 //printf("%d",(1-((-mOffset[i])>>(12-iBit))&1));
2475 shift2 = shift2 + 1;
2477 for(Int_t iBit = 0; iBit < 13; iBit++) {
2478 bitWord[j] = bitWord[j]<<1;
2479 bitWord[j] |= (shift2>>(12-iBit))&1;
2480 //printf("%d",(1-((-mSlope[i])>>(6-iBit))&1));
2484 shift = (UInt_t)mOffset[i];
2485 bitWord[j] = bitWord[j]<<1;
2488 for(Int_t iBit = 1; iBit < 13; iBit++) {
2489 bitWord[j] = bitWord[j]<<1;
2490 bitWord[j] |= (shift>>(12-iBit))&1;
2491 //printf("%d",(mOffset[i]>>(12-iBit))&1);
2497 //printf("bitWord: %u\n",bitWord[j]);
2498 //printf("adc: %d\n",mADC[i]);
2499 fMCMT[j] = bitWord[j];
2518 delete [] selectPair;
2522 //if you want to activate the MC tracklet output, set fgkMCTrackletOutput=kTRUE in AliTRDfeeParam
2524 if (!fFeeParam->GetMCTrackletOutput())
2527 AliLog::SetClassDebugLevel("AliTRDmcmSim", 10);
2528 AliLog::SetFileOutput("../log/tracklet.log");
2530 // testing for wordnr in order to speed up the simulation
2534 UInt_t *trackletWord = new UInt_t[fMaxTracklets];
2535 Int_t *adcChannel = new Int_t[fMaxTracklets];
2536 Int_t *trackRef = new Int_t[fMaxTracklets];
2540 AliTRDdigitsManager *digman = new AliTRDdigitsManager();
2541 digman->ReadDigits(AliRunLoader::GetRunLoader()->GetLoader("TRDLoader")->TreeD());
2542 digman->SetUseDictionaries(kTRUE);
2543 AliTRDfeeParam *feeParam = AliTRDfeeParam::Instance();
2545 for (Int_t j = 0; j < fMaxTracklets; j++) {
2547 trackletWord[j] = 0;
2549 if (bitWord[j]!=0) {
2550 trackletWord[u] = bitWord[j];
2551 adcChannel[u] = mADC[i]; // mapping onto the original adc-array to be in line with the digits-adc-ordering (21 channels in total on 1 mcm, 18 belonging to pads); mADC[i] should be >-1 in case bitWord[i]>0
2553 // Finding label of MC track
2554 TH1F *hTrkRef = new TH1F("trackref", "trackref", 100000, 0, 100000);
2556 Int_t padcol = feeParam->GetPadColFromADC(fRobPos, fMcmPos, adcChannel[u]);
2557 Int_t padcol_ngb = feeParam->GetPadColFromADC(fRobPos, fMcmPos, adcChannel[u] - 1);
2558 Int_t padrow = 4 * (fRobPos / 2) + fMcmPos / 4;
2559 Int_t det = 30 * fSector + 6 * fStack + fLayer;
2560 for(Int_t iTimebin = feeParam->GetLinearFitStart(); iTimebin < feeParam->GetLinearFitEnd(); iTimebin++) {
2561 track[0] = digman->GetTrack(0, padrow, padcol, iTimebin, det);
2562 track[1] = digman->GetTrack(1, padrow, padcol, iTimebin, det);
2563 track[2] = digman->GetTrack(2, padrow, padcol, iTimebin, det);
2564 hTrkRef->Fill(track[0]);
2565 if (track[1] != track[0] && track[1] != -1)
2566 hTrkRef->Fill(track[1]);
2567 if (track[2] != track[0] && track[2] != track[1] && track[2] != -1)
2568 hTrkRef->Fill(track[2]);
2569 if (padcol_ngb >= 0) {
2570 track[0] = digman->GetTrack(0, padrow, padcol, iTimebin, det);
2571 track[1] = digman->GetTrack(1, padrow, padcol, iTimebin, det);
2572 track[2] = digman->GetTrack(2, padrow, padcol, iTimebin, det);
2573 hTrkRef->Fill(track[0]);
2574 if (track[1] != track[0] && track[1] != -1)
2575 hTrkRef->Fill(track[1]);
2576 if (track[2] != track[0] && track[2] != track[1] && track[2] != -1)
2577 hTrkRef->Fill(track[2]);
2580 trackRef[u] = hTrkRef->GetMaximumBin() - 1;
2586 AliDataLoader *dl = AliRunLoader::GetRunLoader()->GetLoader("TRDLoader")->GetDataLoader("tracklets");
2588 AliError("Could not get the tracklets data loader!");
2591 TTree *trackletTree = dl->Tree();
2594 trackletTree = dl->Tree();
2596 AliTRDtrackletMCM *trkl = new AliTRDtrackletMCM();
2597 TBranch *trkbranch = trackletTree->GetBranch("mcmtrklbranch");
2599 trkbranch = trackletTree->Branch("mcmtrklbranch", "AliTRDtrackletMCM", &trkl, 32000);
2600 trkbranch->SetAddress(&trkl);
2602 for (Int_t iTracklet = 0; iTracklet < fMaxTracklets; iTracklet++) {
2603 if (trackletWord[iTracklet] == 0)
2605 trkl->SetTrackletWord(trackletWord[iTracklet]);
2606 trkl->SetDetector(30*fSector + 6*fStack + fLayer);
2607 trkl->SetROB(fRobPos);
2608 trkl->SetMCM(fMcmPos);
2609 trkl->SetLabel(trackRef[iTracklet]);
2610 trackletTree->Fill();
2613 dl->WriteData("OVERWRITE");
2616 delete [] trackletWord;
2617 delete [] adcChannel;
2622 // error measure for quality of fit (not necessarily needed for the trigger)
2623 // cluster quality threshold (not yet set)
2624 // electron probability
2626 //_____________________________________________________________________________________
2627 void AliTRDmcmSim::GeneratefZSM1Dim()
2630 // Generate the array fZSM1Dim necessary
2631 // for the method ProduceRawStream
2635 // Supressed zeros indicated by -1 in digits array
2636 for( Int_t iadc = 1 ; iadc < fNADC-1; iadc++ )
2638 for( Int_t it = 0 ; it < fNTimeBin ; it++ )
2641 if(fADCF[iadc][it]==-1) // If is a supressed value
2645 else // Not suppressed
2652 // Make the 1 dim projection
2653 for( Int_t iadc = 0 ; iadc < fNADC; iadc++ )
2655 for( Int_t it = 0 ; it < fNTimeBin ; it++ )
2657 fZSM1Dim[iadc] &= fZSM[iadc][it];
2661 //_______________________________________________________________________________________
2662 void AliTRDmcmSim::CopyArrays()
2665 // Initialize filtered data array with raw data
2666 // Method added for internal consistency
2669 for( Int_t iadc = 0 ; iadc < fNADC; iadc++ )
2671 for( Int_t it = 0 ; it < fNTimeBin ; it++ )
2673 fADCF[iadc][it] = fADCR[iadc][it];
2677 //_______________________________________________________________________________________
2678 void AliTRDmcmSim::StartfastZS(Int_t pads, Int_t timebins)
2681 // Initialize just the necessary elements to perform
2682 // the zero suppression in the digitizer
2685 fFeeParam = AliTRDfeeParam::Instance();
2686 fSimParam = AliTRDSimParam::Instance();
2688 fNTimeBin = timebins;
2692 fADCR = new Int_t *[fNADC];
2693 fADCF = new Int_t *[fNADC];
2694 fADCT = new Int_t *[fNADC];
2695 fZSM = new Int_t *[fNADC];
2696 fZSM1Dim = new Int_t [fNADC];
2697 for( Int_t iadc = 0 ; iadc < fNADC; iadc++ )
2699 fADCR[iadc] = new Int_t[fNTimeBin];
2700 fADCF[iadc] = new Int_t[fNTimeBin];
2701 fADCT[iadc] = new Int_t[fNTimeBin];
2702 fZSM [iadc] = new Int_t[fNTimeBin];
2706 for( Int_t iadc = 0 ; iadc < fNADC; iadc++ )
2708 for( Int_t it = 0 ; it < fNTimeBin ; it++ )
2710 fADCR[iadc][it] = 0;
2711 fADCF[iadc][it] = 0;
2712 fADCT[iadc][it] = -1;
2713 fZSM [iadc][it] = 1;
2718 fInitialized = kTRUE;
2720 //_______________________________________________________________________________________
2721 void AliTRDmcmSim::FlagDigitsArray(AliTRDarrayADC *tempdigs, Int_t valrow)
2724 // Modify the digits array to flag suppressed values
2727 for( Int_t iadc = 1 ; iadc < fNADC-1; iadc++ )
2729 for( Int_t it = 0 ; it < fNTimeBin ; it++ )
2731 if(fZSM[iadc][it]==1)
2733 tempdigs->SetData(valrow,iadc,it,-1);
2738 //_______________________________________________________________________________________
2739 void AliTRDmcmSim::RestoreZeros()
2742 // Restore the zero-suppressed values (set as -1) to the value 0
2745 for( Int_t iadc = 1 ; iadc < fNADC-1; iadc++ )
2747 for( Int_t it = 0 ; it < fNTimeBin ; it++ )
2750 if(fADCF[iadc][it]==-1) //if is a supressed zero, reset to zero