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 Revision 1.18 2001/01/26 19:57:42 hristov
19 Major upgrade of AliRoot code
21 Revision 1.17 2000/10/19 09:58:14 vicinanz
22 Updated Hits2Digit procedure
24 Revision 1.16 2000/10/02 21:28:17 fca
25 Removal of useless dependecies via forward declarations
27 Revision 1.15 2000/05/18 14:33:01 vicinanz
28 Modified to be full HP compliant
30 Revision 1.14 2000/05/15 19:32:36 fca
33 Revision 1.13 2000/05/10 16:52:18 vicinanz
34 New TOF version with holes for PHOS/RICH
36 Revision 1.11.2.1 2000/05/10 09:37:15 vicinanz
37 New version with Holes for PHOS/RICH
39 Revision 1.11 1999/11/05 22:39:06 fca
42 Revision 1.10 1999/11/01 20:41:57 fca
43 Added protections against using the wrong version of FRAME
45 Revision 1.9 1999/10/15 15:35:19 fca
46 New version for frame1099 with and without holes
48 Revision 1.9 1999/09/29 09:24:33 fca
49 Introduction of the Copyright and cvs Log
52 ///////////////////////////////////////////////////////////////////////////////
54 // Time Of Flight FCA //
55 // This class contains the basic functions for the Time Of Flight //
56 // detector. Functions specific to one particular geometry are //
57 // contained in the derived classes //
59 // VERSIONE WITH 5 SYMMETRIC MODULES ALONG Z AXIS
60 // ==============================================
62 // VERSION WITH HOLES FOR PHOS AND TRD IN SPACEFRAME WITH HOLES
64 // Volume sensibile : FPAD
70 <img src="picts/AliTOFClass.gif">
76 ///////////////////////////////////////////////////////////////////////////////
97 //_____________________________________________________________________________
101 // Default constructor
106 //_____________________________________________________________________________
107 AliTOF::AliTOF(const char *name, const char *title)
108 : AliDetector(name,title)
111 // AliTOF standard constructor
113 // Here are fixed some important parameters
116 // Initialization of hits and digits array
118 fHits = new TClonesArray("AliTOFhit", 405);
119 gAlice->AddHitList(fHits);
121 fDigits = new TClonesArray("AliTOFdigit",405);
123 // Digitization parameters
125 // (Transfer Functions to be inserted here)
131 // General Geometrical Parameters
141 fStripLn = 122.0;//cm Strip Length
142 fSpace = 5.5;//cm Space Beetween the strip and the bottom of the plate
143 fDeadBndZ= 1.5;//cm Dead Boundaries of a Strip along Z direction (width)
144 fDeadBndX= 1.0;//cm Dead Boundaries of a Strip along X direction (length)
145 fXpad = 2.5;//cm X size of a pad
146 fZpad = 3.5;//cm Z size of a pad
147 fGapA = 4.; //cm Gap beetween tilted strip in A-type plate
148 fGapB = 6.; //cm Gap beetween tilted strip in B-type plate
149 fOverSpc = 15.3;//cm Space available for sensitive layers in radial direction
150 fNpadX = 48; // Number of pads in a strip along the X direction
151 fNpadZ = 2; // Number of pads in a strip along the Z direction
152 fPadXStr = fNpadX*fNpadZ; //Number of pads per strip
157 // Physical performances
161 // DAQ characteristics
166 fNPadXRoc = (Int_t)fPadXSector/fNRoc;
169 //_____________________________________________________________________________
170 void AliTOF::AddHit(Int_t track, Int_t *vol, Float_t *hits)
175 TClonesArray &lhits = *fHits;
176 new(lhits[fNhits++]) AliTOFhit(fIshunt, track, vol, hits);
179 //_____________________________________________________________________________
180 void AliTOF::AddDigit(Int_t *tracks, Int_t *vol, Float_t *digits)
185 TClonesArray &ldigits = *fDigits;
186 new (ldigits[fNdigits++]) AliTOFdigit(tracks, vol, digits);
190 //_____________________________________________________________________________
191 void AliTOF::CreateGeometry()
194 // Common geometry code
198 <img src="picts/AliTOFv23.gif">
202 const Double_t kPi=TMath::Pi();
203 const Double_t kDegrad=kPi/180.;
205 Float_t xTof, yTof, Wall;
207 // frame inbetween TOF modules
210 // Sizes of TOF module with its support etc..
211 xTof = 2.*(fRmin*TMath::Tan(10*kDegrad)-Wall/2-.5);
214 // TOF module internal definitions
215 TOFpc(xTof, yTof, fZlenC, fZlenB, fZlenA, fZtof);
218 //_____________________________________________________________________________
219 void AliTOF::DrawModule()
222 // Draw a shaded view of the common part of the TOF geometry
225 cout << " Drawing of AliTOF"<< endl;
226 // Set everything unseen
227 gMC->Gsatt("*", "seen", -1);
229 // Set ALIC mother transparent
230 gMC->Gsatt("ALIC","SEEN",0);
232 // Set the volumes visible
233 gMC->Gsatt("FTOA","SEEN",1);
234 gMC->Gsatt("FTOB","SEEN",1);
235 gMC->Gsatt("FTOC","SEEN",1);
236 gMC->Gsatt("FLTA","SEEN",1);
237 gMC->Gsatt("FLTB","SEEN",1);
238 gMC->Gsatt("FLTC","SEEN",1);
239 gMC->Gsatt("FSTR","SEEN",1);
241 gMC->Gdopt("hide", "on");
242 gMC->Gdopt("shad", "on");
243 gMC->Gsatt("*", "fill", 7);
244 gMC->SetClipBox(".");
245 gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
247 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .02, .02);
248 gMC->Gdhead(1111, "Time Of Flight");
249 gMC->Gdman(18, 4, "MAN");
250 gMC->Gdopt("hide","off");
253 //_____________________________________________________________________________
254 void AliTOF::CreateMaterials()
257 // Defines TOF materials for all versions
258 // Authors : Maxim Martemianov, Boris Zagreev (ITEP)
261 Int_t ISXFLD = gAlice->Field()->Integ();
262 Float_t SXMGMX = gAlice->Field()->Max();
265 Float_t aq[2] = { 28.0855,15.9994 };
266 Float_t zq[2] = { 14.,8. };
267 Float_t wq[2] = { 1.,2. };
271 Float_t afre[2] = {12.011,18.9984032 };
272 Float_t zfre[2] = { 6., 9.};
273 Float_t wfre[2] = { 5.,12.};
274 Float_t densfre = 1.5;
277 Float_t ac[2] = {12.,16.};
278 Float_t zc[2] = { 6., 8.};
279 Float_t wc[2] = { 1., 2.};
280 Float_t dc = .001977;
282 // For mylar (C5H4O2)
283 Float_t amy[3] = { 12., 1., 16. };
284 Float_t zmy[3] = { 6., 1., 8. };
285 Float_t wmy[3] = { 5., 4., 2. };
288 // For polyethilene (CH2) for honeycomb!!!!
289 Float_t ape[2] = { 12., 1. };
290 Float_t zpe[2] = { 6., 1. };
291 Float_t wpe[2] = { 1., 2. };
292 Float_t dpe = 0.935*0.479; //To have 1%X0 for 1cm as for honeycomb
295 Float_t ag10[4] = { 12.,1.,16.,28. };
296 Float_t zg10[4] = { 6.,1., 8.,14. };
297 Float_t wmatg10[4] = { .259,.288,.248,.205 };
298 Float_t densg10 = 1.7;
301 Float_t adme[5] = { 12.,1.,16.,19.,79. };
302 Float_t zdme[5] = { 6.,1., 8., 9.,35. };
303 Float_t wmatdme[5] = { .4056,.0961,.2562,.1014,.1407 };
304 Float_t densdme = .00205;
306 // ---- ALUMINA (AL203)
307 Float_t aal[2] = { 27.,16.};
308 Float_t zal[2] = { 13., 8.};
309 Float_t wmatal[2] = { 2.,3. };
310 Float_t densal = 2.3;
313 Float_t awa[2] = { 1., 16. };
314 Float_t zwa[2] = { 1., 8. };
315 Float_t wwa[2] = { 2., 1. };
319 //AliMaterial(0, "Vacuum$", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
320 AliMaterial( 1, "Air$",14.61,7.3,0.001205,30423.24,67500.);
321 AliMaterial( 2, "Cu $", 63.54, 29.0, 8.96, 1.43, 14.8);
322 AliMaterial( 3, "C $", 12.01, 6.0, 2.265,18.8, 74.4);
323 AliMixture ( 4, "Polyethilene$", ape, zpe, dpe, npe, wpe);
324 AliMixture ( 5, "G10$", ag10, zg10, densg10, nlmatg10, wmatg10);
325 AliMixture ( 6, "DME ", adme, zdme, densdme, nlmatdme, wmatdme);
326 AliMixture ( 7, "CO2$", ac, zc, dc, nc, wc);
327 AliMixture ( 8, "ALUMINA$", aal, zal, densal, nlmatal, wmatal);
328 AliMaterial( 9, "Al $", 26.98, 13., 2.7, 8.9, 37.2);
329 AliMaterial(10, "C-TRD$", 12.01, 6., 2.265*18.8/69.282*15./100, 18.8, 74.4); // for 15%
330 AliMixture (11, "Mylar$", amy, zmy, dmy, nmy, wmy);
331 AliMixture (12, "Freon$", afre, zfre, densfre, nfre, wfre);
332 AliMixture (13, "Quartz$", aq, zq, dq, nq, wq);
333 AliMixture (14, "Water$", awa, zwa, dwa, nwa, wwa);
335 Float_t epsil, stmin, deemax, stemax;
338 // EPSIL = 0.1 ! Tracking precision,
339 // STEMAX = 0.1 ! Maximum displacement for multiple scattering
340 // DEEMAX = 0.1 ! Maximum fractional energy loss, DLS
344 epsil = .001; // Tracking precision,
345 stemax = -1.; // Maximum displacement for multiple scattering
346 deemax = -.3; // Maximum fractional energy loss, DLS
349 AliMedium( 1, "Air$" , 1, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
350 AliMedium( 2, "Cu $" , 2, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
351 AliMedium( 3, "C $" , 3, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
352 AliMedium( 4, "Pol$" , 4, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
353 AliMedium( 5, "G10$" , 5, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
354 AliMedium( 6, "DME$" , 6, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
355 AliMedium( 7, "CO2$" , 7, 0, ISXFLD, SXMGMX, 10., -.01, -.1, .01, -.01);
356 AliMedium( 8,"ALUMINA$", 8, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
357 AliMedium( 9,"Al Frame$",9, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
358 AliMedium(10, "DME-S$", 6, 1, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
359 AliMedium(11, "C-TRD$", 10, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
360 AliMedium(12, "Myl$" , 11, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
361 AliMedium(13, "Fre$" , 12, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
362 AliMedium(14, "Fre-S$", 12, 1, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
363 AliMedium(15, "Glass$", 13, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
364 AliMedium(16, "Water$", 14, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
367 //_____________________________________________________________________________
368 Int_t AliTOF::DistancetoPrimitive(Int_t , Int_t )
371 // Returns distance from mouse pointer to detector, default version
376 //_____________________________________________________________________________
380 // Initialise TOF detector after it has been built
382 // Set id of TOF sensitive volume
383 if (IsVersion() !=0) fIdSens=gMC->VolId("FPAD");
387 //____________________________________________________________________________
388 void AliTOF::MakeBranch(Option_t* option, char *file)
390 // Initializes the Branches of the TOF inside the
391 // trees written for each event.
392 // AliDetector::MakeBranch initializes just the
393 // Branch inside TreeH. Here we add the branch in
398 AliDetector::MakeBranch(option,file);
400 Int_t buffersize = 4000;
401 Char_t branchname[10];
402 sprintf(branchname,"%s",GetName());
404 const char *D = strstr(option,"D");
406 if (fDigits && gAlice->TreeD() && D){
407 gAlice->MakeBranchInTree(gAlice->TreeD(),
408 branchname, &fDigits,buffersize, file) ;
412 //____________________________________________________________________________
413 void AliTOF::FinishEvent()
418 //___________________________________________
419 void AliTOF::SDigits2Digits()
424 int nparticles = gAlice->GetNtrack();
425 cout << "Particles :" <<nparticles<<endl;
426 if (nparticles > 0 ) {
431 //____________________________________________________________________________
432 void AliTOF::Hits2Digits(Int_t evNumber)
434 // Starting from the Hits Tree (TreeH), this
435 // function writes the Digits Tree (TreeD) storing
436 // the digits informations.
437 // Has to be called just at the end of an event or
438 // at the end of a whole run.
439 // It could also be called by AliTOF::Finish Event()
440 // but it can be too heavy.
441 // Just for MC events.
443 // Called by the macro H2D.C
446 AliTOFhit* currentHit;
451 TClonesArray* TOFhits=this->Hits();
453 Int_t nparticles = gAlice->GetNtrack();
454 if (nparticles <= 0) return;
456 TD = gAlice->TreeD();
457 TH = gAlice->TreeH();
458 Int_t ntracks =(Int_t) TH->GetEntries();
460 TRandom *rnd = new TRandom();
462 for (Int_t ntk=0; ntk<ntracks; ntk++){
464 nbytes = TH->GetEvent(ntk);
465 nhits = TOFhits->GetEntriesFast();
467 for (Int_t hit=0; hit<nhits; hit++){
469 currentHit = (AliTOFhit*)(TOFhits->At(hit));
471 vol[0] = currentHit->GetSector();
472 vol[1] = currentHit->GetPlate();
473 vol[2] = currentHit->GetPad_x();
474 vol[3] = currentHit->GetPad_z();
475 vol[4] = currentHit->GetStrip();
477 Float_t IdealTime = currentHit->GetTof();
478 Float_t TDCTime = rnd->Gaus(IdealTime, fTimeRes);
481 Float_t IdealCharge = currentHit->GetEdep();
482 Float_t ADCcharge = rnd->Gaus(IdealCharge, fChrgRes);
483 digit[1] = ADCcharge;
485 Int_t Track = currentHit -> GetTrack();
490 Bool_t Overlap = CheckOverlap(vol, digit, Track);
491 if(!Overlap) AddDigit(tracks, vol, digit);
498 //___________________________________________________________________________
499 Bool_t AliTOF::CheckOverlap(Int_t* vol, Float_t* digit,Int_t Track)
501 // Checks if 2 or more hits belong to the same pad.
502 // In this case the data assigned to the digit object
503 // are the ones of the first hit in order of Time.
505 // Called only by Hits2Digits.
511 for (Int_t ndig=0; ndig<fNdigits; ndig++){
512 AliTOFdigit* currentDigit = (AliTOFdigit*)(fDigits->UncheckedAt(ndig));
513 currentDigit->GetLocation(vol2);
515 for (Int_t i=0;i<=4;i++){
516 if (vol[i]!=vol2[i]) Idem=0;}
518 Float_t TDC2 = digit[0];
519 Float_t TDC1 = currentDigit->GetTdc();
521 currentDigit->SetTdc(TDC2);
522 currentDigit->SetAdc(digit[1]);
524 currentDigit->AddTrack(Track);
532 //____________________________________________________________________________
533 void AliTOF::Digits2Raw(Int_t evNumber)
535 // Starting from digits, writes the
536 // Raw Data objects, i.e. a
537 // TClonesArray of 18 AliTOFRawSector objects
543 Int_t nparticles = gAlice->GetEvent(evNumber);
544 if (nparticles <= 0) return;
546 TD = gAlice->TreeD();
548 TClonesArray* TOFdigits = this->Digits();
549 Int_t ndigits = TOFdigits->GetEntriesFast();
551 TClonesArray* Raw = new TClonesArray("AliTOFRawSector",fNTof+2);
553 for (Int_t isect=1;isect<=fNTof;isect++){
554 AliTOFRawSector* currentSector = (AliTOFRawSector*)Raw->UncheckedAt(isect);
555 TClonesArray* RocData = (TClonesArray*)currentSector->GetRocData();
557 for (Int_t digit=0; digit<ndigits; digit++){
558 AliTOFdigit* currentDigit = (AliTOFdigit*)TOFdigits->UncheckedAt(digit);
559 Int_t sector = currentDigit->GetSector();
561 Int_t Pad = currentDigit -> GetTotPad();
562 Int_t Roc = (Int_t)(Pad/fNPadXRoc)-1;
563 if (Roc>=fNRoc) printf("Wrong n. of ROC ! Roc = %i",Roc);
564 Int_t PadRoc = (Int_t) Pad%fNPadXRoc;
565 Int_t Fec = (Int_t)(PadRoc/fNFec)-1;
566 Int_t Tdc = (Int_t)(PadRoc%fNFec)-1;
567 Float_t Time = currentDigit->GetTdc();
568 Float_t Charge = currentDigit->GetAdc();
569 AliTOFRoc* currentROC = (AliTOFRoc*)RocData->UncheckedAt(Roc);
571 currentROC->AddItem(Fec, Tdc, Error, Charge, Time);
575 UInt_t TotSize=16,RocSize=0;
576 UInt_t RocHead[14],RocChek[14];
577 UInt_t GlobalCheckSum=0;
579 for (UInt_t iRoc = 1; iRoc<(UInt_t)fNRoc; iRoc++){
580 AliTOFRoc* currentRoc = (AliTOFRoc*)RocData->UncheckedAt(iRoc);
581 RocSize = currentRoc->Items*2+1;
582 TotSize += RocSize*4;
583 if (RocSize>=TMath::Power(2,16)) RocSize=0;
584 RocHead[iRoc] = iRoc<<28;
585 RocHead[iRoc] += RocSize;
586 RocChek[iRoc] = currentRoc->GetCheckSum();
587 Int_t HeadCheck = currentRoc->BitCount(RocHead[iRoc]);
588 GlobalCheckSum += HeadCheck;
589 GlobalCheckSum += RocChek[iRoc];
592 AliTOFRoc* DummyRoc = new AliTOFRoc();
594 if (TotSize>=TMath::Power(2,24)) TotSize=0;
595 UInt_t Header = TotSize;
596 UInt_t SectId = ((UInt_t)isect)<<24;
598 GlobalCheckSum += DummyRoc->BitCount(Header);
599 currentSector->SetGlobalCS(GlobalCheckSum);
600 currentSector->SetHeader(Header);
604 //____________________________________________________________________________
605 void AliTOF::Raw2Digits(Int_t evNumber)
607 // Converts Raw Data objects into digits objects.
608 // We schematize the raw data with a
609 // TClonesArray of 18 AliTOFRawSector objects
621 Int_t nparticles = gAlice->GetEvent(evNumber);
622 if (nparticles <= 0) return;
624 TD = gAlice->TreeD();
626 TClonesArray* Raw = new TClonesArray("AliTOFRawSector",fNTof+2);
628 for(Int_t nSec=1; nSec<=fNTof; nSec++){
629 AliTOFRawSector* currentSector = (AliTOFRawSector*)Raw->UncheckedAt(nSec);
630 TClonesArray* RocData = (TClonesArray*)currentSector->GetRocData();
631 for(Int_t nRoc=1; nRoc<=14; nRoc++){
632 AliTOFRoc* currentRoc = (AliTOFRoc*)RocData->UncheckedAt(nRoc);
633 Int_t currentItems = currentRoc->GetItems();
634 for(Int_t item=1; item<currentItems; item++){
635 Int_t nPad = currentRoc->GetTotPad(item);
637 Int_t nStrip = (Int_t)(nPad/fPadXStr)+1;
639 if (nStrip<=fNStripC+2*fNStripB+fNStripA) nPlate = 4;
640 if (nStrip<=fNStripC+fNStripB+fNStripA) nPlate = 3;
641 if (nStrip<=fNStripC+fNStripB) nPlate = 2;
642 if (nStrip<=fNStripC) nPlate=1;
646 case 2: nStrip -= (fNStripC);
648 case 3: nStrip -= (fNStripC+fNStripB);
650 case 4: nStrip -= (fNStripC+fNStripB+fNStripA);
652 case 5: nStrip -= (fNStripC+2*fNStripB+fNStripA);
656 Int_t Pad = nPad%fPadXStr;
657 if (Pad==0) Pad=fPadXStr;
658 Int_t nPadX=0, nPadZ=0;
659 (Pad>fNpadX)? nPadX -= fNpadX : nPadX = Pad ;
661 (Pad>fNpadX)? nPadZ = 2 : nPadZ = 1 ;
664 Float_t TDC = currentRoc->GetTime(item,error);
665 if (!error) digit[0]=TDC;
666 digit[1] = currentRoc->GetCharge(item);
667 AddDigit(tracks,vol,digit);
676 /******************************************************************************/
680 //______________________________________________________________________________
681 AliTOFhit::AliTOFhit(Int_t shunt, Int_t track, Int_t *vol,
683 :AliHit(shunt, track)
685 // Constructor of hit object
712 fTof = hits[7]; //TOF[s]
715 fDx = hits[8]; //Distance from the edge along x axis
716 fDy = hits[9]; //Y cohordinate of the hit
717 fDz = hits[10]; //Distance from the edge along z axis
718 fIncA= hits[11]; //Incidence angle
719 fEdep= hits[12]; //Energy loss in TOF pad
722 //******************************************************************************
724 ClassImp(AliTOFdigit)
726 //______________________________________________________________________________
727 AliTOFdigit::AliTOFdigit(Int_t *tracks, Int_t *vol,Float_t *digit)
730 // Constructor of digit object
742 //______________________________________________________________________________
743 void AliTOFdigit::GetLocation(Int_t *Loc)
745 // Get the cohordinates of the digit
746 // in terms of Sector - Plate - Strip - Pad
756 //______________________________________________________________________________
757 Int_t AliTOFdigit::GetTotPad()
759 // Get the "total" index of the pad inside a Sector
760 // starting from the digits data.
766 TOF =(AliTOF*) gAlice->GetDetector("TOF");
768 printf("AliTOFdigit::GetTotPad - No AliRun object present, exiting");
772 Int_t Pad = fPad_x+TOF->fNpadX*(fPad_z-1);
778 case 2: Before = TOF->fNStripC;
780 case 3: Before = TOF->fNStripB + TOF->fNStripC;
782 case 4: Before = TOF->fNStripA + TOF->fNStripB + TOF->fNStripC;
784 case 5: Before = TOF->fNStripA + 2*TOF->fNStripB + TOF->fNStripC;
788 Int_t Strip = fStrip+Before;
789 Int_t PadTot = TOF->fPadXStr*(Strip-1)+Pad;
793 //______________________________________________________________________________
794 void AliTOFdigit::AddTrack(Int_t track)
796 // Add a track to the digit
801 }else if (fTracks[2]==0){
804 // printf("AliTOFdigit::AddTrack ERROR: Too many Tracks (>3) \n");