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 **************************************************************************/
18 //_________________________________________________________________________
20 // Class for trigger analysis.
21 // Digits are grouped in TRU's (384 cells? ordered fNTRUPhi x fNTRUEta).
22 // The algorithm searches all possible 4x4 cell combinations per each TRU,
23 // adding the digits amplitude and finding the maximum. Maximums are compared
24 // to triggers threshold and they are set. Thresholds need to be fixed.
25 // Last 2 modules are half size in Phi, I considered that the number of TRU
26 // is maintained for the last modules but decision not taken. If different,
27 // then this must be changed.
30 // //Inside the event loop
31 // AliEMCALTrigger *tr = new AliEMCALTrigger();//Init Trigger
32 // tr->SetL0Threshold(100);
33 // tr->SetL1JetLowPtThreshold(1000);
34 // tr->SetL1JetMediumPtThreshold(10000);
35 // tr->SetL1JetHighPtThreshold(20000);
36 // tr->Trigger(); //Execute Trigger
37 // tr->Print(""); //Print results
39 //*-- Author: Gustavo Conesa & Yves Schutz (IFIC, CERN)
40 //////////////////////////////////////////////////////////////////////////////
43 // --- ROOT system ---
44 //#include "TMatrixD.h"
46 // --- ALIROOT system ---
49 #include "AliRunLoader.h"
50 #include "AliTriggerInput.h"
52 #include "AliEMCALLoader.h"
53 #include "AliEMCALDigit.h"
54 #include "AliEMCALTrigger.h"
55 #include "AliEMCALGeometry.h"
57 ClassImp(AliEMCALTrigger)
59 //______________________________________________________________________
60 AliEMCALTrigger::AliEMCALTrigger()
61 : AliTriggerDetector(),
62 f2x2MaxAmp(-1), f2x2CellPhi(-1), f2x2CellEta(-1),
63 f4x4MaxAmp(-1), f4x4CellPhi(-1), f4x4CellEta(-1),
64 fL0Threshold(100),fL1JetLowPtThreshold(200),
65 fL1JetMediumPtThreshold(500), fL1JetHighPtThreshold(1000),
71 fADCValuesHigh4x4 = 0x0; //new Int_t[fTimeBins];
72 fADCValuesLow4x4 = 0x0; //new Int_t[fTimeBins];
73 fADCValuesHigh2x2 = 0x0; //new Int_t[fTimeBins];
74 fADCValuesLow2x2 = 0x0; //new Int_t[fTimeBins];
87 //____________________________________________________________________________
88 AliEMCALTrigger::AliEMCALTrigger(const AliEMCALTrigger & trig)
89 : AliTriggerDetector(trig)
94 f2x2MaxAmp = trig.f2x2MaxAmp ;
95 f4x4MaxAmp = trig.f4x4MaxAmp ;
96 f2x2CellPhi = trig.f2x2CellPhi ;
97 f4x4CellPhi = trig.f4x4CellPhi ;
98 f2x2CellEta = trig.f2x2CellEta ;
99 f4x4CellEta = trig.f4x4CellEta ;
100 fADCValuesHigh4x4 = trig.fADCValuesHigh4x4 ;
101 fADCValuesLow4x4 = trig.fADCValuesLow4x4 ;
102 fADCValuesHigh2x2 = trig.fADCValuesHigh2x2 ;
103 fADCValuesLow2x2 = trig.fADCValuesLow2x2 ;
104 fDigitsList = trig.fDigitsList ;
105 fL0Threshold = trig.fL0Threshold ;
106 fL1JetLowPtThreshold = trig.fL1JetLowPtThreshold ;
107 fL1JetMediumPtThreshold = trig.fL1JetMediumPtThreshold ;
108 fL1JetHighPtThreshold = trig.fL1JetHighPtThreshold ;
109 fSimulation = trig.fSimulation ;
115 //----------------------------------------------------------------------
116 void AliEMCALTrigger::CreateInputs()
120 // Do not create inputs again!!
121 if( fInputs.GetEntriesFast() > 0 ) return;
123 fInputs.AddLast( new AliTriggerInput( "EMCAL_L0", "EMCAL L0", 0x02 ) );
124 fInputs.AddLast( new AliTriggerInput( "EMCAL_JetHPt_L1","EMCAL Jet High Pt L1", 0x04 ) );
125 fInputs.AddLast( new AliTriggerInput( "EMCAL_JetMPt_L1","EMCAL Jet Medium Pt L1", 0x08 ) );
126 fInputs.AddLast( new AliTriggerInput( "EMCAL_JetLPt_L1","EMCAL Jet Low Pt L1", 0x016 ) );
130 //____________________________________________________________________________
131 void AliEMCALTrigger::MakeSlidingCell(const TClonesArray * amptrus, const TClonesArray * timeRtrus, const Int_t isupermod,TMatrixD *ampmax2, TMatrixD *ampmax4, AliEMCALGeometry *geom){
133 //Sums energy of all possible 2x2 (L0) and 4x4 (L1) cells per each TRU.
134 //Fast signal in the experiment is given by 2x2 cells,
135 //for this reason we loop inside the TRU cells by 2.
137 //Declare and initialize variables
138 Int_t nCellsPhi = geom->GetNPhi()*2/geom->GetNTRUPhi() ;
140 nCellsPhi = nCellsPhi / 2 ; //Half size SM. Not Final.
141 // 12(tow)*2(cell)/1 TRU, cells in Phi in one TRU
142 Int_t nCellsEta = geom->GetNEta()*2/geom->GetNTRUEta() ;
143 // 24(mod)*2(tower)/3 TRU, cells in Eta in one TRU
144 Int_t nTRU = geom->GetNTRU();//3 TRU per super module
148 for(Int_t i = 0; i < 4; i++){
149 for(Int_t j = 0; j < nTRU; j++){
150 (*ampmax2)(i,j) = -1;
151 (*ampmax4)(i,j) = -1;
155 //Create matrix that will contain 2x2 amplitude sums
156 //used to calculate the 4x4 sums
157 TMatrixD * tru2x2 = new TMatrixD(nCellsPhi/2,nCellsEta/2) ;
158 for(Int_t i = 0; i < nCellsPhi/2; i++)
159 for(Int_t j = 0; j < nCellsEta/2; j++)
162 //Loop over all TRUS in a supermodule
163 for(Int_t itru = 0 + isupermod * nTRU ; itru < (isupermod+1)*nTRU ; itru++) {
164 TMatrixD * amptru = dynamic_cast<TMatrixD *>(amptrus->At(itru)) ;
165 TMatrixD * timeRtru = dynamic_cast<TMatrixD *>(timeRtrus->At(itru)) ;
166 Int_t mtru = itru-isupermod*nTRU ; //Number of TRU in Supermodule
168 //Sliding 2x2, add 2x2 amplitudes (NOT OVERLAP)
169 for(Int_t irow = 0 ; irow < nCellsPhi; irow += 2){
170 for(Int_t icol = 0 ; icol < nCellsEta ; icol += 2){
171 amp2 = (*amptru)(irow,icol)+(*amptru)(irow+1,icol)+
172 (*amptru)(irow,icol+1)+(*amptru)(irow+1,icol+1);
174 //Fill matrix with added 2x2 crystals for use in 4x4 sums
175 (*tru2x2)(irow/2,icol/2) = amp2 ;
176 //Select 2x2 maximum sums to select L0
177 if(amp2 > (*ampmax2)(0,mtru)){
178 (*ampmax2)(0,mtru) = amp2 ;
179 (*ampmax2)(1,mtru) = irow;
180 (*ampmax2)(2,mtru) = icol;
185 //Find most recent time in the selected 2x2 cell
186 (*ampmax2)(3,mtru) = 1 ;
187 Int_t row2 = static_cast <Int_t> ((*ampmax2)(1,mtru));
188 Int_t col2 = static_cast <Int_t> ((*ampmax2)(2,mtru));
189 for(Int_t i = 0; i<2; i++){
190 for(Int_t j = 0; j<2; j++){
191 if((*amptru)(row2+i,col2+j) > 0 && (*timeRtru)(row2+i,col2+j)> 0){
192 if((*timeRtru)(row2+i,col2+j) < (*ampmax2)(3,mtru) )
193 (*ampmax2)(3,mtru) = (*timeRtru)(row2+i,col2+j);
198 //Sliding 4x4, add 4x4 amplitudes (OVERLAP)
199 for(Int_t irow = 0 ; irow < nCellsPhi/2; irow++){
200 for(Int_t icol = 0 ; icol < nCellsEta/2 ; icol++){
201 if( (irow+1) < nCellsPhi/2 && (icol+1) < nCellsEta/2){//Avoid exit the TRU
202 amp4 = (*tru2x2)(irow,icol)+(*tru2x2)(irow+1,icol)+
203 (*tru2x2)(irow,icol+1)+(*tru2x2)(irow+1,icol+1);
204 //Select 4x4 maximum sums to select L1
205 if(amp4 > (*ampmax4)(0,mtru)){
206 (*ampmax4)(0,mtru) = amp4 ;
207 (*ampmax4)(1,mtru) = irow*2;
208 (*ampmax4)(2,mtru) = icol*2;
214 //Find most recent time in selected 4x4 cell
215 (*ampmax4)(3,mtru) = 1 ;
216 Int_t row4 = static_cast <Int_t> ((*ampmax4)(1,mtru));
217 Int_t col4 = static_cast <Int_t> ((*ampmax4)(2,mtru));
218 for(Int_t i = 0; i<4; i++){
219 for(Int_t j = 0; j<4; j++){
220 if((*amptru)(row4+i,col4+j) > 0 && (*timeRtru)(row4+i,col4+j)> 0){
221 if((*timeRtru)(row4+i,col4+j) < (*ampmax4)(3,mtru) )
222 (*ampmax4)(3,mtru) = (*timeRtru)(row4+i,col4+j);
229 //____________________________________________________________________________
230 void AliEMCALTrigger::Print(const Option_t * opt) const
233 //Prints main parameters
237 AliTriggerInput* in = 0x0 ;
239 printf( " Maximum Amplitude after Sliding Cell, \n") ;
240 printf( " -2x2 cells sum (not overlapped): %10.2f, in Super Module %d\n",
242 printf( " -2x2 from row %d to row %d and from column %d to column %d\n", f2x2CellPhi, f2x2CellPhi+2, f2x2CellEta, f2x2CellEta+2) ;
243 printf( " -4x4 cells sum (overlapped) : %10.2f, in Super Module %d\n",
245 printf( " -4x4 from row %d to row %d and from column %d to column %d\n", f4x4CellPhi, f4x4CellPhi+4, f4x4CellEta, f4x4CellEta+4) ;
246 printf( " Threshold for LO %10.2f\n",
248 in = (AliTriggerInput*)fInputs.FindObject( "EMCAL_L0" );
250 printf( " *** EMCAL LO is set ***\n") ;
252 printf( " Jet Low Pt Threshold for L1 %10.2f\n",
253 fL1JetLowPtThreshold) ;
254 in = (AliTriggerInput*)fInputs.FindObject( "EMCAL_JetLPt_L1" );
256 printf( " *** EMCAL Jet Low Pt for L1 is set ***\n") ;
258 printf( " Jet Medium Pt Threshold for L1 %10.2f\n",
259 fL1JetMediumPtThreshold) ;
260 in = (AliTriggerInput*) fInputs.FindObject( "EMCAL_JetMPt_L1" );
262 printf( " *** EMCAL Jet Medium Pt for L1 is set ***\n") ;
264 printf( " Jet High Pt Threshold for L1 %10.2f\n",
265 fL1JetHighPtThreshold) ;
266 in = (AliTriggerInput*) fInputs.FindObject( "EMCAL_JetHPt_L1" );
268 printf( " *** EMCAL Jet High Pt for L1 is set ***\n") ;
272 //____________________________________________________________________________
273 void AliEMCALTrigger::SetTriggers(const Int_t iSM, const TMatrixD *ampmax2,
274 const TMatrixD *ampmax4, AliEMCALGeometry *geom)
277 //Checks the 2x2 and 4x4 maximum amplitude per each TRU and
278 //compares with the different L0 and L1 triggers thresholds
279 Float_t max2[] = {-1,-1,-1,-1} ;
280 Float_t max4[] = {-1,-1,-1,-1} ;
284 //Find maximum summed amplitude of all the TRU
286 for(Int_t i = 0 ; i < geom->GetNTRU() ; i++){
287 if(max2[0] < (*ampmax2)(0,i) ){
288 max2[0] = (*ampmax2)(0,i) ; // 2x2 summed max amplitude
289 max2[1] = (*ampmax2)(1,i) ; // corresponding phi position in TRU
290 max2[2] = (*ampmax2)(2,i) ; // corresponding eta position in TRU
291 max2[3] = (*ampmax2)(3,i) ; // corresponding most recent time
294 if(max4[0] < (*ampmax4)(0,i) ){
295 max4[0] = (*ampmax4)(0,i) ; // 4x4 summed max amplitude
296 max4[1] = (*ampmax4)(1,i) ; // corresponding phi position in TRU
297 max4[2] = (*ampmax4)(2,i) ; // corresponding eta position in TRU
298 max4[3] = (*ampmax4)(3,i) ; // corresponding most recent time
303 //--------Set max amplitude if larger than in other Super Modules------------
304 Float_t maxtimeR2 = -1 ;
305 Float_t maxtimeR4 = -1 ;
306 AliRunLoader *rl = AliRunLoader::GetRunLoader();
307 AliRun * gAlice = rl->GetAliRun();
308 AliEMCAL * emcal = (AliEMCAL*)gAlice->GetDetector("EMCAL");
309 Int_t nTimeBins = emcal->GetRawFormatTimeBins() ;
311 //Set max of 2x2 amplitudes and select L0 trigger
312 if(max2[0] > f2x2MaxAmp ){
313 f2x2MaxAmp = max2[0] ;
315 maxtimeR2 = max2[3] ;
316 geom->GetCellPhiEtaIndexInSModuleFromTRUIndex(itru2,
317 static_cast<Int_t>(max2[1]),
318 static_cast<Int_t>(max2[2]),
319 f2x2CellPhi,f2x2CellEta) ;
321 //Transform digit amplitude in Raw Samples
322 fADCValuesLow2x2 = new Int_t[nTimeBins];
323 fADCValuesHigh2x2 = new Int_t[nTimeBins];
324 emcal->RawSampledResponse(maxtimeR2, f2x2MaxAmp, fADCValuesHigh2x2, fADCValuesLow2x2) ;
326 //Set Trigger Inputs, compare ADC time bins until threshold is attained
328 for(Int_t i = 0 ; i < nTimeBins ; i++){
329 if(fADCValuesHigh2x2[i] >= fL0Threshold || fADCValuesLow2x2[i] >= fL0Threshold){
330 SetInput("EMCAL_L0") ;
336 //------------Set max of 4x4 amplitudes and select L1 trigger---------
337 if(max4[0] > f4x4MaxAmp ){
338 f4x4MaxAmp = max4[0] ;
340 maxtimeR4 = max4[3] ;
341 geom->GetCellPhiEtaIndexInSModuleFromTRUIndex(itru4,
342 static_cast<Int_t>(max4[1]),
343 static_cast<Int_t>(max4[2]),
344 f4x4CellPhi,f4x4CellEta) ;
345 //Transform digit amplitude in Raw Samples
346 fADCValuesHigh4x4 = new Int_t[nTimeBins];
347 fADCValuesLow4x4 = new Int_t[nTimeBins];
348 emcal->RawSampledResponse(maxtimeR4, f4x4MaxAmp, fADCValuesHigh4x4, fADCValuesLow4x4) ;
350 //Set Trigger Inputs, compare ADC time bins until threshold is attained
352 for(Int_t i = 0 ; i < nTimeBins ; i++){
353 if(fADCValuesHigh4x4[i] >= fL1JetLowPtThreshold || fADCValuesLow4x4[i] >= fL1JetLowPtThreshold){
354 SetInput("EMCAL_JetLPt_L1") ;
360 for(Int_t i = 0 ; i < nTimeBins ; i++){
361 if(fADCValuesHigh4x4[i] >= fL1JetMediumPtThreshold || fADCValuesLow4x4[i] >= fL1JetMediumPtThreshold){
362 SetInput("EMCAL_JetMPt_L1") ;
368 for(Int_t i = 0 ; i < nTimeBins ; i++){
369 if(fADCValuesHigh4x4[i] >= fL1JetHighPtThreshold || fADCValuesLow4x4[i] >= fL1JetHighPtThreshold){
370 SetInput("EMCAL_JetHPt_L1") ;
377 //____________________________________________________________________________
378 void AliEMCALTrigger::Trigger()
380 //Main Method to select triggers.
381 AliRunLoader *rl = AliRunLoader::GetRunLoader();
382 AliEMCALLoader *emcalLoader = dynamic_cast<AliEMCALLoader*>
383 (rl->GetDetectorLoader("EMCAL"));
385 //Load EMCAL Geometry
387 AliRun * gAlice = rl->GetAliRun();
388 AliEMCAL * emcal = (AliEMCAL*)gAlice->GetDetector("EMCAL");
389 AliEMCALGeometry * geom = emcal->GetGeometry();
392 AliFatal("Did not get geometry from EMCALLoader");
396 Int_t nSuperModules = geom->GetNumberOfSuperModules() ; //12 SM in EMCAL
397 Int_t nTRU = geom->GetNTRU();//3 TRU per super module
399 //Intialize data members each time the trigger is called in event loop
400 f2x2MaxAmp = -1; f2x2CellPhi = -1; f2x2CellEta = -1;
401 f4x4MaxAmp = -1; f4x4CellPhi = -1; f4x4CellEta = -1;
403 //Take the digits list if simulation
405 rl->LoadDigits("EMCAL");
406 fDigitsList = emcalLoader->Digits() ;
409 AliFatal("Digits not found !") ;
411 //Take the digits list
414 TClonesArray * amptrus = new TClonesArray("TMatrixD",1000);
415 TClonesArray * timeRtrus = new TClonesArray("TMatrixD",1000);
417 geom->FillTRU(fDigitsList, amptrus, timeRtrus) ;
419 //Do Cell Sliding and select Trigger
420 //Initialize varible that will contain maximum amplitudes and
421 //its corresponding cell position in eta and phi, and time.
422 TMatrixD * ampmax2 = new TMatrixD(4,nTRU) ;
423 TMatrixD * ampmax4 = new TMatrixD(4,nTRU) ;
425 for(Int_t iSM = 0 ; iSM < nSuperModules ; iSM++) {
426 //Do 2x2 and 4x4 sums, select maximums.
427 MakeSlidingCell(amptrus, timeRtrus, iSM, ampmax2, ampmax4, geom);
430 SetTriggers(iSM, ampmax2, ampmax4, geom) ;