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 1.11.2.1 2000/05/10 09:37:15 vicinanz
19 New version with Holes for PHOS/RICH
21 Revision 1.11 1999/11/05 22:39:06 fca
24 Revision 1.10 1999/11/01 20:41:57 fca
25 Added protections against using the wrong version of FRAME
27 Revision 1.9 1999/10/15 15:35:19 fca
28 New version for frame1099 with and without holes
30 Revision 1.9 1999/09/29 09:24:33 fca
31 Introduction of the Copyright and cvs Log
34 ///////////////////////////////////////////////////////////////////////////////
36 // Time Of Flight FCA //
37 // This class contains the basic functions for the Time Of Flight //
38 // detector. Functions specific to one particular geometry are //
39 // contained in the derived classes //
41 // VERSIONE WITH 5 SYMMETRIC MODULES ALONG Z AXIS
42 // ==============================================
44 // VERSION WITH HOLES FOR PHOS AND TRD IN SPACEFRAME WITH HOLES
46 // Volume sensibile : FPAD
52 <img src="picts/AliTOFClass.gif">
58 ///////////////////////////////////////////////////////////////////////////////
74 //_____________________________________________________________________________
78 // Default constructor
83 //_____________________________________________________________________________
84 AliTOF::AliTOF(const char *name, const char *title)
85 : AliDetector(name,title)
88 // AliTOF standard constructor
90 // Here are fixed some important parameters
93 // Initialization of hits and digits array
95 fHits = new TClonesArray("AliTOFhit", 405);
97 fDigits = new TClonesArray("AliTOFdigit",405);
99 // Digitization parameters
101 // (Transfer Functions to be inserted here)
107 // General Geometrical Parameters
117 fStripLn = 122.0;//cm Strip Length
118 fSpace = 5.5;//cm Space Beetween the strip and the bottom of the plate
119 fDeadBndZ= 1.5;//cm Dead Boundaries of a Strip along Z direction (width)
120 fDeadBndX= 1.0;//cm Dead Boundaries of a Strip along X direction (length)
121 fXpad = 2.5;//cm X size of a pad
122 fZpad = 3.5;//cm Z size of a pad
123 fGapA = 4.; //cm Gap beetween tilted strip in A-type plate
124 fGapB = 6.; //cm Gap beetween tilted strip in B-type plate
125 fOverSpc = 15.3;//cm Space available for sensitive layers in radial direction
126 fNpadX = 48; // Number of pads in a strip along the X direction
127 fNpadZ = 2; // Number of pads in a strip along the Z direction
128 fPadXStr = fNpadX*fNpadZ; //Number of pads per strip
133 // Physical performances
137 // DAQ characteristics
142 fNPadXRoc = (Int_t)fPadXSector/fNRoc;
145 //_____________________________________________________________________________
146 void AliTOF::AddHit(Int_t track, Int_t *vol, Float_t *hits)
151 TClonesArray &lhits = *fHits;
152 new(lhits[fNhits++]) AliTOFhit(fIshunt, track, vol, hits);
155 //_____________________________________________________________________________
156 void AliTOF::AddDigit(Int_t *tracks, Int_t *vol, Float_t *digits)
161 TClonesArray &ldigits = *fDigits;
162 new (ldigits[fNdigits++]) AliTOFdigit(tracks, vol, digits);
166 //_____________________________________________________________________________
167 void AliTOF::CreateGeometry()
170 // Common geometry code
174 <img src="picts/AliTOFv23.gif">
178 const Double_t kPi=TMath::Pi();
179 const Double_t kDegrad=kPi/180.;
181 Float_t xTof, yTof, Wall;
183 // frame inbetween TOF modules
186 // Sizes of TOF module with its support etc..
187 xTof = 2.*(fRmin*TMath::Tan(10*kDegrad)-Wall/2-.5);
190 // TOF module internal definitions
191 TOFpc(xTof, yTof, fZlenC, fZlenB, fZlenA, fZtof);
194 //_____________________________________________________________________________
195 void AliTOF::DrawModule()
198 // Draw a shaded view of the common part of the TOF geometry
201 cout << " Drawing of AliTOF"<< endl;
202 // Set everything unseen
203 gMC->Gsatt("*", "seen", -1);
205 // Set ALIC mother transparent
206 gMC->Gsatt("ALIC","SEEN",0);
208 // Set the volumes visible
209 gMC->Gsatt("FTOA","SEEN",1);
210 gMC->Gsatt("FTOB","SEEN",1);
211 gMC->Gsatt("FTOC","SEEN",1);
212 gMC->Gsatt("FLTA","SEEN",1);
213 gMC->Gsatt("FLTB","SEEN",1);
214 gMC->Gsatt("FLTC","SEEN",1);
215 gMC->Gsatt("FSTR","SEEN",1);
217 gMC->Gdopt("hide", "on");
218 gMC->Gdopt("shad", "on");
219 gMC->Gsatt("*", "fill", 7);
220 gMC->SetClipBox(".");
221 gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
223 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .02, .02);
224 gMC->Gdhead(1111, "Time Of Flight");
225 gMC->Gdman(18, 4, "MAN");
226 gMC->Gdopt("hide","off");
229 //_____________________________________________________________________________
230 void AliTOF::CreateMaterials()
233 // Defines TOF materials for all versions
234 // Authors : Maxim Martemianov, Boris Zagreev (ITEP)
237 Int_t ISXFLD = gAlice->Field()->Integ();
238 Float_t SXMGMX = gAlice->Field()->Max();
241 Float_t aq[2] = { 28.0855,15.9994 };
242 Float_t zq[2] = { 14.,8. };
243 Float_t wq[2] = { 1.,2. };
247 Float_t afre[2] = {12.011,18.9984032 };
248 Float_t zfre[2] = { 6., 9.};
249 Float_t wfre[2] = { 5.,12.};
250 Float_t densfre = 1.5;
253 Float_t ac[2] = {12.,16.};
254 Float_t zc[2] = { 6., 8.};
255 Float_t wc[2] = { 1., 2.};
256 Float_t dc = .001977;
258 // For mylar (C5H4O2)
259 Float_t amy[3] = { 12., 1., 16. };
260 Float_t zmy[3] = { 6., 1., 8. };
261 Float_t wmy[3] = { 5., 4., 2. };
264 // For polyethilene (CH2) for honeycomb!!!!
265 Float_t ape[2] = { 12., 1. };
266 Float_t zpe[2] = { 6., 1. };
267 Float_t wpe[2] = { 1., 2. };
268 Float_t dpe = 0.935*0.479; //To have 1%X0 for 1cm as for honeycomb
271 Float_t ag10[4] = { 12.,1.,16.,28. };
272 Float_t zg10[4] = { 6.,1., 8.,14. };
273 Float_t wmatg10[4] = { .259,.288,.248,.205 };
274 Float_t densg10 = 1.7;
277 Float_t adme[5] = { 12.,1.,16.,19.,79. };
278 Float_t zdme[5] = { 6.,1., 8., 9.,35. };
279 Float_t wmatdme[5] = { .4056,.0961,.2562,.1014,.1407 };
280 Float_t densdme = .00205;
282 // ---- ALUMINA (AL203)
283 Float_t aal[2] = { 27.,16.};
284 Float_t zal[2] = { 13., 8.};
285 Float_t wmatal[2] = { 2.,3. };
286 Float_t densal = 2.3;
289 Float_t awa[2] = { 1., 16. };
290 Float_t zwa[2] = { 1., 8. };
291 Float_t wwa[2] = { 2., 1. };
295 //AliMaterial(0, "Vacuum$", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
296 AliMaterial( 1, "Air$",14.61,7.3,0.001205,30423.24,67500.);
297 AliMaterial( 2, "Cu $", 63.54, 29.0, 8.96, 1.43, 14.8);
298 AliMaterial( 3, "C $", 12.01, 6.0, 2.265,18.8, 74.4);
299 AliMixture ( 4, "Polyethilene$", ape, zpe, dpe, npe, wpe);
300 AliMixture ( 5, "G10$", ag10, zg10, densg10, nlmatg10, wmatg10);
301 AliMixture ( 6, "DME ", adme, zdme, densdme, nlmatdme, wmatdme);
302 AliMixture ( 7, "CO2$", ac, zc, dc, nc, wc);
303 AliMixture ( 8, "ALUMINA$", aal, zal, densal, nlmatal, wmatal);
304 AliMaterial( 9, "Al $", 26.98, 13., 2.7, 8.9, 37.2);
305 AliMaterial(10, "C-TRD$", 12.01, 6., 2.265*18.8/69.282*15./100, 18.8, 74.4); // for 15%
306 AliMixture (11, "Mylar$", amy, zmy, dmy, nmy, wmy);
307 AliMixture (12, "Freon$", afre, zfre, densfre, nfre, wfre);
308 AliMixture (13, "Quartz$", aq, zq, dq, nq, wq);
309 AliMixture (14, "Water$", awa, zwa, dwa, nwa, wwa);
311 Float_t epsil, stmin, deemax, stemax;
314 // EPSIL = 0.1 ! Tracking precision,
315 // STEMAX = 0.1 ! Maximum displacement for multiple scattering
316 // DEEMAX = 0.1 ! Maximum fractional energy loss, DLS
320 epsil = .001; // Tracking precision,
321 stemax = -1.; // Maximum displacement for multiple scattering
322 deemax = -.3; // Maximum fractional energy loss, DLS
325 AliMedium( 1, "Air$" , 1, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
326 AliMedium( 2, "Cu $" , 2, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
327 AliMedium( 3, "C $" , 3, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
328 AliMedium( 4, "Pol$" , 4, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
329 AliMedium( 5, "G10$" , 5, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
330 AliMedium( 6, "DME$" , 6, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
331 AliMedium( 7, "CO2$" , 7, 0, ISXFLD, SXMGMX, 10., -.01, -.1, .01, -.01);
332 AliMedium( 8,"ALUMINA$", 8, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
333 AliMedium( 9,"Al Frame$",9, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
334 AliMedium(10, "DME-S$", 6, 1, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
335 AliMedium(11, "C-TRD$", 10, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
336 AliMedium(12, "Myl$" , 11, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
337 AliMedium(13, "Fre$" , 12, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
338 AliMedium(14, "Fre-S$", 12, 1, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
339 AliMedium(15, "Glass$", 13, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
340 AliMedium(16, "Water$", 14, 0, ISXFLD, SXMGMX, 10., stemax, deemax, epsil, stmin);
343 //_____________________________________________________________________________
344 Int_t AliTOF::DistancetoPrimitive(Int_t , Int_t )
347 // Returns distance from mouse pointer to detector, default version
352 //_____________________________________________________________________________
356 // Initialise TOF detector after it has been built
358 // Set id of TOF sensitive volume
359 if (IsVersion() !=0) fIdSens=gMC->VolId("FPAD");
363 //____________________________________________________________________________
364 void AliTOF::MakeBranch(Option_t* option)
366 // Initializes the Branches of the TOF inside the
367 // trees written for each event.
368 // AliDetector::MakeBranch initializes just the
369 // Branch inside TreeH. Here we add the branch in
374 AliDetector::MakeBranch(option);
376 Int_t buffersize = 4000;
377 Char_t branchname[10];
378 sprintf(branchname,"%s",GetName());
379 char *D = strstr(option,"D");
381 if (fDigits && gAlice->TreeD() && D){
382 gAlice->TreeD()->Branch(branchname,&fDigits,buffersize);
383 printf("Making Branch %s for digits \n",branchname);
387 //____________________________________________________________________________
388 void AliTOF::FinishEvent()
394 //____________________________________________________________________________
395 void AliTOF::Hits2Digits(Int_t evNumber)
397 // Starting from the Hits Tree (TreeH), this
398 // function writes the Digits Tree (TreeD) storing
399 // the digits informations.
400 // Has to be called just at the end of an event or
401 // at the end of a whole run.
402 // It could also be called by AliTOF::Finish Event()
403 // but it can be too heavy.
404 // Just for MC events.
406 // Called by the macro H2D.C
409 AliTOFhit* currentHit;
414 TClonesArray* TOFhits=this->Hits();
416 Int_t nparticles = gAlice->GetEvent(evNumber);
417 if (nparticles <= 0) return;
419 TD = gAlice->TreeD();
420 TH = gAlice->TreeH();
421 Int_t ntracks =(Int_t) TH->GetEntries();
423 TRandom *rnd = new TRandom();
425 for (Int_t ntk=0; ntk<ntracks; ntk++){
427 nbytes = TH->GetEvent(ntk);
428 nhits = TOFhits->GetEntriesFast();
430 for (Int_t hit=0; hit<nhits; hit++){
432 currentHit = (AliTOFhit*)(TOFhits->At(hit));
434 vol[0] = currentHit->GetSector();
435 vol[1] = currentHit->GetPlate();
436 vol[2] = currentHit->GetPad_x();
437 vol[3] = currentHit->GetPad_z();
438 vol[4] = currentHit->GetStrip();
440 Float_t IdealTime = currentHit->GetTof();
441 Float_t TDCTime = rnd->Gaus(IdealTime, fTimeRes);
444 Float_t IdealCharge = currentHit->GetEdep();
445 Float_t ADCcharge = rnd->Gaus(IdealCharge, fChrgRes);
446 digit[1] = ADCcharge;
448 Int_t Track = currentHit -> GetTrack();
453 Bool_t Overlap = CheckOverlap(vol, digit, Track);
454 if(!Overlap) AddDigit(tracks, vol, digit);
461 //___________________________________________________________________________
462 Bool_t AliTOF::CheckOverlap(Int_t* vol, Float_t* digit,Int_t Track)
464 // Checks if 2 or more hits belong to the same pad.
465 // In this case the data assigned to the digit object
466 // are the ones of the first hit in order of Time.
468 // Called only by Hits2Digits.
474 for (Int_t ndig=0; ndig<fNdigits; ndig++){
475 AliTOFdigit* currentDigit = (AliTOFdigit*)(fDigits->UncheckedAt(ndig));
476 currentDigit->GetLocation(vol2);
478 for (Int_t i=0;i<=4;i++){
479 if (vol[i]!=vol2[i]) Idem=0;}
481 Float_t TDC2 = digit[0];
482 Float_t TDC1 = currentDigit->GetTdc();
484 currentDigit->SetTdc(TDC2);
485 currentDigit->SetAdc(digit[1]);
487 currentDigit->AddTrack(Track);
495 //____________________________________________________________________________
496 void AliTOF::Digits2Raw(Int_t evNumber)
498 // Starting from digits, writes the
499 // Raw Data objects, i.e. a
500 // TClonesArray of 18 AliTOFRawSector objects
506 Int_t nparticles = gAlice->GetEvent(evNumber);
507 if (nparticles <= 0) return;
509 TD = gAlice->TreeD();
511 TClonesArray* TOFdigits = this->Digits();
512 Int_t ndigits = TOFdigits->GetEntriesFast();
514 TClonesArray* Raw = new TClonesArray("AliTOFRawSector",fNTof+2);
516 for (Int_t isect=1;isect<=fNTof;isect++){
517 AliTOFRawSector* currentSector = (AliTOFRawSector*)Raw->UncheckedAt(isect);
518 TClonesArray* RocData = (TClonesArray*)currentSector->GetRocData();
520 for (Int_t digit=0; digit<ndigits; digit++){
521 AliTOFdigit* currentDigit = (AliTOFdigit*)TOFdigits->UncheckedAt(digit);
522 Int_t sector = currentDigit->GetSector();
524 Int_t Pad = currentDigit -> GetTotPad();
525 Int_t Roc = (Int_t)(Pad/fNPadXRoc)-1;
526 if (Roc>=fNRoc) printf("Wrong n. of ROC ! Roc = %i",Roc);
527 Int_t PadRoc = (Int_t) Pad%fNPadXRoc;
528 Int_t Fec = (Int_t)(PadRoc/fNFec)-1;
529 Int_t Tdc = (Int_t)(PadRoc%fNFec)-1;
530 Float_t Time = currentDigit->GetTdc();
531 Float_t Charge = currentDigit->GetAdc();
532 AliTOFRoc* currentROC = (AliTOFRoc*)RocData->UncheckedAt(Roc);
534 currentROC->AddItem(Fec, Tdc, Error, Charge, Time);
538 UInt_t TotSize=16,RocSize=0;
539 UInt_t RocHead[14],RocChek[14];
540 UInt_t GlobalCheckSum=0;
542 for (UInt_t iRoc = 1; iRoc<(UInt_t)fNRoc; iRoc++){
543 AliTOFRoc* currentRoc = (AliTOFRoc*)RocData->UncheckedAt(iRoc);
544 RocSize = currentRoc->Items*2+1;
545 TotSize += RocSize*4;
546 if (RocSize>=pow(2,16)) RocSize=0;
547 RocHead[iRoc] = iRoc<<28;
548 RocHead[iRoc] += RocSize;
549 RocChek[iRoc] = currentRoc->GetCheckSum();
550 Int_t HeadCheck = currentRoc->BitCount(RocHead[iRoc]);
551 GlobalCheckSum += HeadCheck;
552 GlobalCheckSum += RocChek[iRoc];
555 AliTOFRoc* DummyRoc = new AliTOFRoc();
557 if (TotSize>=pow(2,24)) TotSize=0;
558 UInt_t Header = TotSize;
559 UInt_t SectId = ((UInt_t)isect)<<24;
561 GlobalCheckSum += DummyRoc->BitCount(Header);
562 currentSector->SetGlobalCS(GlobalCheckSum);
563 currentSector->SetHeader(Header);
567 //____________________________________________________________________________
568 void AliTOF::Raw2Digits(Int_t evNumber)
570 // Converts Raw Data objects into digits objects.
571 // We schematize the raw data with a
572 // TClonesArray of 18 AliTOFRawSector objects
584 Int_t nparticles = gAlice->GetEvent(evNumber);
585 if (nparticles <= 0) return;
587 TD = gAlice->TreeD();
589 TClonesArray* Raw = new TClonesArray("AliTOFRawSector",fNTof+2);
591 for(Int_t nSec=1; nSec<=fNTof; nSec++){
592 AliTOFRawSector* currentSector = (AliTOFRawSector*)Raw->UncheckedAt(nSec);
593 TClonesArray* RocData = (TClonesArray*)currentSector->GetRocData();
594 for(Int_t nRoc=1; nRoc<=14; nRoc++){
595 AliTOFRoc* currentRoc = (AliTOFRoc*)RocData->UncheckedAt(nRoc);
596 Int_t currentItems = currentRoc->GetItems();
597 for(Int_t item=1; item<currentItems; item++){
598 Int_t nPad = currentRoc->GetTotPad(item);
600 Int_t nStrip = (Int_t)(nPad/fPadXStr)+1;
602 if (nStrip<=fNStripC+2*fNStripB+fNStripA) nPlate = 4;
603 if (nStrip<=fNStripC+fNStripB+fNStripA) nPlate = 3;
604 if (nStrip<=fNStripC+fNStripB) nPlate = 2;
605 if (nStrip<=fNStripC) nPlate=1;
609 case 2: nStrip -= (fNStripC);
611 case 3: nStrip -= (fNStripC+fNStripB);
613 case 4: nStrip -= (fNStripC+fNStripB+fNStripA);
615 case 5: nStrip -= (fNStripC+2*fNStripB+fNStripA);
619 Int_t Pad = nPad%fPadXStr;
620 if (Pad==0) Pad=fPadXStr;
621 Int_t nPadX=0, nPadZ=0;
622 (Pad>fNpadX)? nPadX -= fNpadX : nPadX = Pad ;
624 (Pad>fNpadX)? nPadZ = 2 : nPadZ = 1 ;
627 Float_t TDC = currentRoc->GetTime(item,error);
628 if (!error) digit[0]=TDC;
629 digit[1] = currentRoc->GetCharge(item);
630 AddDigit(tracks,vol,digit);
639 /******************************************************************************/
643 //______________________________________________________________________________
644 AliTOFhit::AliTOFhit(Int_t shunt, Int_t track, Int_t *vol,
646 :AliHit(shunt, track)
648 // Constructor of hit object
675 fTof = hits[7]; //TOF[s]
678 fDx = hits[8]; //Distance from the edge along x axis
679 fDy = hits[9]; //Y cohordinate of the hit
680 fDz = hits[10]; //Distance from the edge along z axis
681 fIncA= hits[11]; //Incidence angle
682 fEdep= hits[12]; //Energy loss in TOF pad
685 //******************************************************************************
687 ClassImp(AliTOFdigit)
689 //______________________________________________________________________________
690 AliTOFdigit::AliTOFdigit(Int_t *tracks, Int_t *vol,Float_t *digit)
693 // Constructor of digit object
705 //______________________________________________________________________________
706 void AliTOFdigit::GetLocation(Int_t *Loc)
708 // Get the cohordinates of the digit
709 // in terms of Sector - Plate - Strip - Pad
719 //______________________________________________________________________________
720 Int_t AliTOFdigit::GetTotPad()
722 // Get the "total" index of the pad inside a Sector
723 // starting from the digits data.
729 TOF =(AliTOF*) gAlice->GetDetector("TOF");
731 printf("AliTOFdigit::GetTotPad - No AliRun object present, exiting");
735 Int_t Pad = fPad_x+TOF->fNpadX*(fPad_z-1);
741 case 2: Before = TOF->fNStripC;
743 case 3: Before = TOF->fNStripB + TOF->fNStripC;
745 case 4: Before = TOF->fNStripA + TOF->fNStripB + TOF->fNStripC;
747 case 5: Before = TOF->fNStripA + 2*TOF->fNStripB + TOF->fNStripC;
751 Int_t Strip = fStrip+Before;
752 Int_t PadTot = TOF->fPadXStr*(Strip-1)+Pad;
756 //______________________________________________________________________________
757 void AliTOFdigit::AddTrack(Int_t track)
759 // Add a track to the digit
764 }else if (fTracks[2]==0){
767 printf("AliTOFdigit::AddTrack ERROR: Too many Tracks (>3) \n");