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 1.14 2000/05/15 19:32:36 fca
21 Revision 1.13 2000/05/10 16:52:18 vicinanz
22 New TOF version with holes for PHOS/RICH
24 Revision 1.11.2.1 2000/05/10 09:37:15 vicinanz
25 New version with Holes for PHOS/RICH
27 Revision 1.11 1999/11/05 22:39:06 fca
30 Revision 1.10 1999/11/01 20:41:57 fca
31 Added protections against using the wrong version of FRAME
33 Revision 1.9 1999/10/15 15:35:19 fca
34 New version for frame1099 with and without holes
36 Revision 1.9 1999/09/29 09:24:33 fca
37 Introduction of the Copyright and cvs Log
40 ///////////////////////////////////////////////////////////////////////////////
42 // Time Of Flight FCA //
43 // This class contains the basic functions for the Time Of Flight //
44 // detector. Functions specific to one particular geometry are //
45 // contained in the derived classes //
47 // VERSIONE WITH 5 SYMMETRIC MODULES ALONG Z AXIS
48 // ==============================================
50 // VERSION WITH HOLES FOR PHOS AND TRD IN SPACEFRAME WITH HOLES
52 // Volume sensibile : FPAD
58 <img src="picts/AliTOFClass.gif">
64 ///////////////////////////////////////////////////////////////////////////////
80 //_____________________________________________________________________________
84 // Default constructor
89 //_____________________________________________________________________________
90 AliTOF::AliTOF(const char *name, const char *title)
91 : AliDetector(name,title)
94 // AliTOF standard constructor
96 // Here are fixed some important parameters
99 // Initialization of hits and digits array
101 fHits = new TClonesArray("AliTOFhit", 405);
102 gAlice->AddHitList(fHits);
104 fDigits = new TClonesArray("AliTOFdigit",405);
106 // Digitization parameters
108 // (Transfer Functions to be inserted here)
114 // General Geometrical Parameters
124 fStripLn = 122.0;//cm Strip Length
125 fSpace = 5.5;//cm Space Beetween the strip and the bottom of the plate
126 fDeadBndZ= 1.5;//cm Dead Boundaries of a Strip along Z direction (width)
127 fDeadBndX= 1.0;//cm Dead Boundaries of a Strip along X direction (length)
128 fXpad = 2.5;//cm X size of a pad
129 fZpad = 3.5;//cm Z size of a pad
130 fGapA = 4.; //cm Gap beetween tilted strip in A-type plate
131 fGapB = 6.; //cm Gap beetween tilted strip in B-type plate
132 fOverSpc = 15.3;//cm Space available for sensitive layers in radial direction
133 fNpadX = 48; // Number of pads in a strip along the X direction
134 fNpadZ = 2; // Number of pads in a strip along the Z direction
135 fPadXStr = fNpadX*fNpadZ; //Number of pads per strip
140 // Physical performances
144 // DAQ characteristics
149 fNPadXRoc = (Int_t)fPadXSector/fNRoc;
152 //_____________________________________________________________________________
153 void AliTOF::AddHit(Int_t track, Int_t *vol, Float_t *hits)
158 TClonesArray &lhits = *fHits;
159 new(lhits[fNhits++]) AliTOFhit(fIshunt, track, vol, hits);
162 //_____________________________________________________________________________
163 void AliTOF::AddDigit(Int_t *tracks, Int_t *vol, Float_t *digits)
168 TClonesArray &ldigits = *fDigits;
169 new (ldigits[fNdigits++]) AliTOFdigit(tracks, vol, digits);
173 //_____________________________________________________________________________
174 void AliTOF::CreateGeometry()
177 // Common geometry code
181 <img src="picts/AliTOFv23.gif">
185 const Double_t kPi=TMath::Pi();
186 const Double_t kDegrad=kPi/180.;
188 Float_t xTof, yTof, Wall;
190 // frame inbetween TOF modules
193 // Sizes of TOF module with its support etc..
194 xTof = 2.*(fRmin*TMath::Tan(10*kDegrad)-Wall/2-.5);
197 // TOF module internal definitions
198 TOFpc(xTof, yTof, fZlenC, fZlenB, fZlenA, fZtof);
201 //_____________________________________________________________________________
202 void AliTOF::DrawModule()
205 // Draw a shaded view of the common part of the TOF geometry
208 cout << " Drawing of AliTOF"<< endl;
209 // Set everything unseen
210 gMC->Gsatt("*", "seen", -1);
212 // Set ALIC mother transparent
213 gMC->Gsatt("ALIC","SEEN",0);
215 // Set the volumes visible
216 gMC->Gsatt("FTOA","SEEN",1);
217 gMC->Gsatt("FTOB","SEEN",1);
218 gMC->Gsatt("FTOC","SEEN",1);
219 gMC->Gsatt("FLTA","SEEN",1);
220 gMC->Gsatt("FLTB","SEEN",1);
221 gMC->Gsatt("FLTC","SEEN",1);
222 gMC->Gsatt("FSTR","SEEN",1);
224 gMC->Gdopt("hide", "on");
225 gMC->Gdopt("shad", "on");
226 gMC->Gsatt("*", "fill", 7);
227 gMC->SetClipBox(".");
228 gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
230 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .02, .02);
231 gMC->Gdhead(1111, "Time Of Flight");
232 gMC->Gdman(18, 4, "MAN");
233 gMC->Gdopt("hide","off");
236 //_____________________________________________________________________________
237 void AliTOF::CreateMaterials()
240 // Defines TOF materials for all versions
241 // Authors : Maxim Martemianov, Boris Zagreev (ITEP)
244 Int_t ISXFLD = gAlice->Field()->Integ();
245 Float_t SXMGMX = gAlice->Field()->Max();
248 Float_t aq[2] = { 28.0855,15.9994 };
249 Float_t zq[2] = { 14.,8. };
250 Float_t wq[2] = { 1.,2. };
254 Float_t afre[2] = {12.011,18.9984032 };
255 Float_t zfre[2] = { 6., 9.};
256 Float_t wfre[2] = { 5.,12.};
257 Float_t densfre = 1.5;
260 Float_t ac[2] = {12.,16.};
261 Float_t zc[2] = { 6., 8.};
262 Float_t wc[2] = { 1., 2.};
263 Float_t dc = .001977;
265 // For mylar (C5H4O2)
266 Float_t amy[3] = { 12., 1., 16. };
267 Float_t zmy[3] = { 6., 1., 8. };
268 Float_t wmy[3] = { 5., 4., 2. };
271 // For polyethilene (CH2) for honeycomb!!!!
272 Float_t ape[2] = { 12., 1. };
273 Float_t zpe[2] = { 6., 1. };
274 Float_t wpe[2] = { 1., 2. };
275 Float_t dpe = 0.935*0.479; //To have 1%X0 for 1cm as for honeycomb
278 Float_t ag10[4] = { 12.,1.,16.,28. };
279 Float_t zg10[4] = { 6.,1., 8.,14. };
280 Float_t wmatg10[4] = { .259,.288,.248,.205 };
281 Float_t densg10 = 1.7;
284 Float_t adme[5] = { 12.,1.,16.,19.,79. };
285 Float_t zdme[5] = { 6.,1., 8., 9.,35. };
286 Float_t wmatdme[5] = { .4056,.0961,.2562,.1014,.1407 };
287 Float_t densdme = .00205;
289 // ---- ALUMINA (AL203)
290 Float_t aal[2] = { 27.,16.};
291 Float_t zal[2] = { 13., 8.};
292 Float_t wmatal[2] = { 2.,3. };
293 Float_t densal = 2.3;
296 Float_t awa[2] = { 1., 16. };
297 Float_t zwa[2] = { 1., 8. };
298 Float_t wwa[2] = { 2., 1. };
302 //AliMaterial(0, "Vacuum$", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
303 AliMaterial( 1, "Air$",14.61,7.3,0.001205,30423.24,67500.);
304 AliMaterial( 2, "Cu $", 63.54, 29.0, 8.96, 1.43, 14.8);
305 AliMaterial( 3, "C $", 12.01, 6.0, 2.265,18.8, 74.4);
306 AliMixture ( 4, "Polyethilene$", ape, zpe, dpe, npe, wpe);
307 AliMixture ( 5, "G10$", ag10, zg10, densg10, nlmatg10, wmatg10);
308 AliMixture ( 6, "DME ", adme, zdme, densdme, nlmatdme, wmatdme);
309 AliMixture ( 7, "CO2$", ac, zc, dc, nc, wc);
310 AliMixture ( 8, "ALUMINA$", aal, zal, densal, nlmatal, wmatal);
311 AliMaterial( 9, "Al $", 26.98, 13., 2.7, 8.9, 37.2);
312 AliMaterial(10, "C-TRD$", 12.01, 6., 2.265*18.8/69.282*15./100, 18.8, 74.4); // for 15%
313 AliMixture (11, "Mylar$", amy, zmy, dmy, nmy, wmy);
314 AliMixture (12, "Freon$", afre, zfre, densfre, nfre, wfre);
315 AliMixture (13, "Quartz$", aq, zq, dq, nq, wq);
316 AliMixture (14, "Water$", awa, zwa, dwa, nwa, wwa);
318 Float_t epsil, stmin, deemax, stemax;
321 // EPSIL = 0.1 ! Tracking precision,
322 // STEMAX = 0.1 ! Maximum displacement for multiple scattering
323 // DEEMAX = 0.1 ! Maximum fractional energy loss, DLS
327 epsil = .001; // Tracking precision,
328 stemax = -1.; // Maximum displacement for multiple scattering
329 deemax = -.3; // Maximum fractional energy loss, DLS
332 AliMedium( 1, "Air$" , 1, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
333 AliMedium( 2, "Cu $" , 2, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
334 AliMedium( 3, "C $" , 3, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
335 AliMedium( 4, "Pol$" , 4, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
336 AliMedium( 5, "G10$" , 5, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
337 AliMedium( 6, "DME$" , 6, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
338 AliMedium( 7, "CO2$" , 7, 0, ISXFLD, SXMGMX, 10., -.01, -.1, .01, -.01);
339 AliMedium( 8,"ALUMINA$", 8, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
340 AliMedium( 9,"Al Frame$",9, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
341 AliMedium(10, "DME-S$", 6, 1, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
342 AliMedium(11, "C-TRD$", 10, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
343 AliMedium(12, "Myl$" , 11, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
344 AliMedium(13, "Fre$" , 12, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
345 AliMedium(14, "Fre-S$", 12, 1, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
346 AliMedium(15, "Glass$", 13, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
347 AliMedium(16, "Water$", 14, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
350 //_____________________________________________________________________________
351 Int_t AliTOF::DistancetoPrimitive(Int_t , Int_t )
354 // Returns distance from mouse pointer to detector, default version
359 //_____________________________________________________________________________
363 // Initialise TOF detector after it has been built
365 // Set id of TOF sensitive volume
366 if (IsVersion() !=0) fIdSens=gMC->VolId("FPAD");
370 //____________________________________________________________________________
371 void AliTOF::MakeBranch(Option_t* option)
373 // Initializes the Branches of the TOF inside the
374 // trees written for each event.
375 // AliDetector::MakeBranch initializes just the
376 // Branch inside TreeH. Here we add the branch in
381 AliDetector::MakeBranch(option);
383 Int_t buffersize = 4000;
384 Char_t branchname[10];
385 sprintf(branchname,"%s",GetName());
386 char *D = strstr(option,"D");
388 if (fDigits && gAlice->TreeD() && D){
389 gAlice->TreeD()->Branch(branchname,&fDigits,buffersize);
390 printf("Making Branch %s for digits \n",branchname);
394 //____________________________________________________________________________
395 void AliTOF::FinishEvent()
401 //____________________________________________________________________________
402 void AliTOF::Hits2Digits(Int_t evNumber)
404 // Starting from the Hits Tree (TreeH), this
405 // function writes the Digits Tree (TreeD) storing
406 // the digits informations.
407 // Has to be called just at the end of an event or
408 // at the end of a whole run.
409 // It could also be called by AliTOF::Finish Event()
410 // but it can be too heavy.
411 // Just for MC events.
413 // Called by the macro H2D.C
416 AliTOFhit* currentHit;
421 TClonesArray* TOFhits=this->Hits();
423 Int_t nparticles = gAlice->GetEvent(evNumber);
424 if (nparticles <= 0) return;
426 TD = gAlice->TreeD();
427 TH = gAlice->TreeH();
428 Int_t ntracks =(Int_t) TH->GetEntries();
430 TRandom *rnd = new TRandom();
432 for (Int_t ntk=0; ntk<ntracks; ntk++){
434 nbytes = TH->GetEvent(ntk);
435 nhits = TOFhits->GetEntriesFast();
437 for (Int_t hit=0; hit<nhits; hit++){
439 currentHit = (AliTOFhit*)(TOFhits->At(hit));
441 vol[0] = currentHit->GetSector();
442 vol[1] = currentHit->GetPlate();
443 vol[2] = currentHit->GetPad_x();
444 vol[3] = currentHit->GetPad_z();
445 vol[4] = currentHit->GetStrip();
447 Float_t IdealTime = currentHit->GetTof();
448 Float_t TDCTime = rnd->Gaus(IdealTime, fTimeRes);
451 Float_t IdealCharge = currentHit->GetEdep();
452 Float_t ADCcharge = rnd->Gaus(IdealCharge, fChrgRes);
453 digit[1] = ADCcharge;
455 Int_t Track = currentHit -> GetTrack();
460 Bool_t Overlap = CheckOverlap(vol, digit, Track);
461 if(!Overlap) AddDigit(tracks, vol, digit);
468 //___________________________________________________________________________
469 Bool_t AliTOF::CheckOverlap(Int_t* vol, Float_t* digit,Int_t Track)
471 // Checks if 2 or more hits belong to the same pad.
472 // In this case the data assigned to the digit object
473 // are the ones of the first hit in order of Time.
475 // Called only by Hits2Digits.
481 for (Int_t ndig=0; ndig<fNdigits; ndig++){
482 AliTOFdigit* currentDigit = (AliTOFdigit*)(fDigits->UncheckedAt(ndig));
483 currentDigit->GetLocation(vol2);
485 for (Int_t i=0;i<=4;i++){
486 if (vol[i]!=vol2[i]) Idem=0;}
488 Float_t TDC2 = digit[0];
489 Float_t TDC1 = currentDigit->GetTdc();
491 currentDigit->SetTdc(TDC2);
492 currentDigit->SetAdc(digit[1]);
494 currentDigit->AddTrack(Track);
502 //____________________________________________________________________________
503 void AliTOF::Digits2Raw(Int_t evNumber)
505 // Starting from digits, writes the
506 // Raw Data objects, i.e. a
507 // TClonesArray of 18 AliTOFRawSector objects
513 Int_t nparticles = gAlice->GetEvent(evNumber);
514 if (nparticles <= 0) return;
516 TD = gAlice->TreeD();
518 TClonesArray* TOFdigits = this->Digits();
519 Int_t ndigits = TOFdigits->GetEntriesFast();
521 TClonesArray* Raw = new TClonesArray("AliTOFRawSector",fNTof+2);
523 for (Int_t isect=1;isect<=fNTof;isect++){
524 AliTOFRawSector* currentSector = (AliTOFRawSector*)Raw->UncheckedAt(isect);
525 TClonesArray* RocData = (TClonesArray*)currentSector->GetRocData();
527 for (Int_t digit=0; digit<ndigits; digit++){
528 AliTOFdigit* currentDigit = (AliTOFdigit*)TOFdigits->UncheckedAt(digit);
529 Int_t sector = currentDigit->GetSector();
531 Int_t Pad = currentDigit -> GetTotPad();
532 Int_t Roc = (Int_t)(Pad/fNPadXRoc)-1;
533 if (Roc>=fNRoc) printf("Wrong n. of ROC ! Roc = %i",Roc);
534 Int_t PadRoc = (Int_t) Pad%fNPadXRoc;
535 Int_t Fec = (Int_t)(PadRoc/fNFec)-1;
536 Int_t Tdc = (Int_t)(PadRoc%fNFec)-1;
537 Float_t Time = currentDigit->GetTdc();
538 Float_t Charge = currentDigit->GetAdc();
539 AliTOFRoc* currentROC = (AliTOFRoc*)RocData->UncheckedAt(Roc);
541 currentROC->AddItem(Fec, Tdc, Error, Charge, Time);
545 UInt_t TotSize=16,RocSize=0;
546 UInt_t RocHead[14],RocChek[14];
547 UInt_t GlobalCheckSum=0;
549 for (UInt_t iRoc = 1; iRoc<(UInt_t)fNRoc; iRoc++){
550 AliTOFRoc* currentRoc = (AliTOFRoc*)RocData->UncheckedAt(iRoc);
551 RocSize = currentRoc->Items*2+1;
552 TotSize += RocSize*4;
553 if (RocSize>=TMath::Power(2,16)) RocSize=0;
554 RocHead[iRoc] = iRoc<<28;
555 RocHead[iRoc] += RocSize;
556 RocChek[iRoc] = currentRoc->GetCheckSum();
557 Int_t HeadCheck = currentRoc->BitCount(RocHead[iRoc]);
558 GlobalCheckSum += HeadCheck;
559 GlobalCheckSum += RocChek[iRoc];
562 AliTOFRoc* DummyRoc = new AliTOFRoc();
564 if (TotSize>=TMath::Power(2,24)) TotSize=0;
565 UInt_t Header = TotSize;
566 UInt_t SectId = ((UInt_t)isect)<<24;
568 GlobalCheckSum += DummyRoc->BitCount(Header);
569 currentSector->SetGlobalCS(GlobalCheckSum);
570 currentSector->SetHeader(Header);
574 //____________________________________________________________________________
575 void AliTOF::Raw2Digits(Int_t evNumber)
577 // Converts Raw Data objects into digits objects.
578 // We schematize the raw data with a
579 // TClonesArray of 18 AliTOFRawSector objects
591 Int_t nparticles = gAlice->GetEvent(evNumber);
592 if (nparticles <= 0) return;
594 TD = gAlice->TreeD();
596 TClonesArray* Raw = new TClonesArray("AliTOFRawSector",fNTof+2);
598 for(Int_t nSec=1; nSec<=fNTof; nSec++){
599 AliTOFRawSector* currentSector = (AliTOFRawSector*)Raw->UncheckedAt(nSec);
600 TClonesArray* RocData = (TClonesArray*)currentSector->GetRocData();
601 for(Int_t nRoc=1; nRoc<=14; nRoc++){
602 AliTOFRoc* currentRoc = (AliTOFRoc*)RocData->UncheckedAt(nRoc);
603 Int_t currentItems = currentRoc->GetItems();
604 for(Int_t item=1; item<currentItems; item++){
605 Int_t nPad = currentRoc->GetTotPad(item);
607 Int_t nStrip = (Int_t)(nPad/fPadXStr)+1;
609 if (nStrip<=fNStripC+2*fNStripB+fNStripA) nPlate = 4;
610 if (nStrip<=fNStripC+fNStripB+fNStripA) nPlate = 3;
611 if (nStrip<=fNStripC+fNStripB) nPlate = 2;
612 if (nStrip<=fNStripC) nPlate=1;
616 case 2: nStrip -= (fNStripC);
618 case 3: nStrip -= (fNStripC+fNStripB);
620 case 4: nStrip -= (fNStripC+fNStripB+fNStripA);
622 case 5: nStrip -= (fNStripC+2*fNStripB+fNStripA);
626 Int_t Pad = nPad%fPadXStr;
627 if (Pad==0) Pad=fPadXStr;
628 Int_t nPadX=0, nPadZ=0;
629 (Pad>fNpadX)? nPadX -= fNpadX : nPadX = Pad ;
631 (Pad>fNpadX)? nPadZ = 2 : nPadZ = 1 ;
634 Float_t TDC = currentRoc->GetTime(item,error);
635 if (!error) digit[0]=TDC;
636 digit[1] = currentRoc->GetCharge(item);
637 AddDigit(tracks,vol,digit);
646 /******************************************************************************/
650 //______________________________________________________________________________
651 AliTOFhit::AliTOFhit(Int_t shunt, Int_t track, Int_t *vol,
653 :AliHit(shunt, track)
655 // Constructor of hit object
682 fTof = hits[7]; //TOF[s]
685 fDx = hits[8]; //Distance from the edge along x axis
686 fDy = hits[9]; //Y cohordinate of the hit
687 fDz = hits[10]; //Distance from the edge along z axis
688 fIncA= hits[11]; //Incidence angle
689 fEdep= hits[12]; //Energy loss in TOF pad
692 //******************************************************************************
694 ClassImp(AliTOFdigit)
696 //______________________________________________________________________________
697 AliTOFdigit::AliTOFdigit(Int_t *tracks, Int_t *vol,Float_t *digit)
700 // Constructor of digit object
712 //______________________________________________________________________________
713 void AliTOFdigit::GetLocation(Int_t *Loc)
715 // Get the cohordinates of the digit
716 // in terms of Sector - Plate - Strip - Pad
726 //______________________________________________________________________________
727 Int_t AliTOFdigit::GetTotPad()
729 // Get the "total" index of the pad inside a Sector
730 // starting from the digits data.
736 TOF =(AliTOF*) gAlice->GetDetector("TOF");
738 printf("AliTOFdigit::GetTotPad - No AliRun object present, exiting");
742 Int_t Pad = fPad_x+TOF->fNpadX*(fPad_z-1);
748 case 2: Before = TOF->fNStripC;
750 case 3: Before = TOF->fNStripB + TOF->fNStripC;
752 case 4: Before = TOF->fNStripA + TOF->fNStripB + TOF->fNStripC;
754 case 5: Before = TOF->fNStripA + 2*TOF->fNStripB + TOF->fNStripC;
758 Int_t Strip = fStrip+Before;
759 Int_t PadTot = TOF->fPadXStr*(Strip-1)+Pad;
763 //______________________________________________________________________________
764 void AliTOFdigit::AddTrack(Int_t track)
766 // Add a track to the digit
771 }else if (fTracks[2]==0){
774 printf("AliTOFdigit::AddTrack ERROR: Too many Tracks (>3) \n");