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4c039060 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
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 | **************************************************************************/ | |
15 | ||
16 | /* | |
17 | $Log$ | |
94de3818 | 18 | Revision 1.9 2000/07/13 16:41:29 fca |
19 | New START corrected for coding conventions | |
20 | ||
ef51244a | 21 | Revision 1.8 2000/03/27 17:24:25 alla |
22 | Modifing geometry | |
23 | ||
c345bb4f | 24 | Revision 1.6 2000/01/21 15:45:23 fca |
25 | New Version from Alla | |
26 | ||
971579f6 | 27 | Revision 1.5 2000/01/19 17:17:15 fca |
28 | Introducing a list of lists of hits -- more hits allowed for detector now | |
29 | ||
1cedd08a | 30 | Revision 1.4 1999/11/12 15:04:00 fca |
31 | Modifications from A.Maevskaya | |
32 | ||
82fc3fb3 | 33 | Revision 1.3 1999/09/29 09:24:29 fca |
34 | Introduction of the Copyright and cvs Log | |
35 | ||
4c039060 | 36 | */ |
37 | ||
6ca40650 | 38 | /////////////////////////////////////////////////////////////////////////////// |
39 | // // | |
40 | // START (T-Zero) Detector // | |
41 | // This class contains the base procedures for the START // | |
42 | // detector // | |
43 | // // | |
44 | //Begin_Html | |
45 | /* | |
46 | <img src="gif/AliSTARTClass.gif"> | |
47 | </pre> | |
48 | <br clear=left> | |
49 | <font size=+2 color=red> | |
50 | <p>The responsible person for this module is | |
51 | <a href="mailto:Alla.Maevskaia@cern.ch">Alla Maevskaia</a>. | |
52 | </font> | |
53 | <pre> | |
54 | */ | |
55 | //End_Html | |
56 | // // | |
57 | // // | |
58 | /////////////////////////////////////////////////////////////////////////////// | |
59 | ||
6ca40650 | 60 | #include <iostream.h> |
61 | #include <fstream.h> | |
971579f6 | 62 | |
63 | #include "TMath.h" | |
64 | #include "TTUBE.h" | |
65 | #include "TNode.h" | |
c345bb4f | 66 | #include "TRandom.h" |
971579f6 | 67 | #include "TGeometry.h" |
68 | #include "AliRun.h" | |
69 | #include "AliSTART.h" | |
70 | #include "AliSTARTdigit.h" | |
6ca40650 | 71 | #include "AliMC.h" |
971579f6 | 72 | #include "AliSTARThit.h" |
c345bb4f | 73 | #include "AliSTARTvertex.h" |
971579f6 | 74 | |
6ca40650 | 75 | ClassImp(AliSTART) |
ef51244a | 76 | |
77 | static AliSTARTdigit *digits; | |
78 | ||
6ca40650 | 79 | //_____________________________________________________________________________ |
99560b47 | 80 | AliSTART::AliSTART() |
6ca40650 | 81 | { |
82 | // | |
83 | // Default constructor for class AliSTART | |
84 | // | |
85 | fIshunt = 0; | |
971579f6 | 86 | fHits = 0; |
87 | fDigits = 0; | |
6ca40650 | 88 | } |
89 | ||
90 | //_____________________________________________________________________________ | |
91 | AliSTART::AliSTART(const char *name, const char *title) | |
92 | : AliDetector(name,title) | |
93 | { | |
94 | // | |
95 | // Standard constructor for START Detector | |
96 | // | |
971579f6 | 97 | |
c345bb4f | 98 | |
6ca40650 | 99 | // |
100 | // Initialise Hit array | |
971579f6 | 101 | fHits = new TClonesArray("AliSTARThit", 405); |
c345bb4f | 102 | // gAlice->AddHitList(fHits); |
103 | // fDigits = new TClonesArray("AliSTARTdigit",500); | |
6ca40650 | 104 | |
105 | fIshunt = 0; | |
c345bb4f | 106 | fIdSens = 0; |
6ca40650 | 107 | SetMarkerColor(kRed); |
108 | } | |
109 | ||
110 | //_____________________________________________________________________________ | |
111 | void AliSTART::AddHit(Int_t track, Int_t *vol, Float_t *hits) | |
112 | { | |
113 | // | |
114 | // Add a START hit | |
115 | // | |
116 | TClonesArray &lhits = *fHits; | |
117 | new(lhits[fNhits++]) AliSTARThit(fIshunt,track,vol,hits); | |
118 | } | |
971579f6 | 119 | |
120 | //_____________________________________________________________________________ | |
c345bb4f | 121 | |
971579f6 | 122 | void AliSTART::AddDigit(Int_t *tracks,Int_t *digits) |
123 | { | |
c345bb4f | 124 | |
125 | // Add a START digit to the list | |
126 | ||
127 | // printf (" AddDigit*******"); | |
128 | // TClonesArray &ldigits = *fDigits; | |
129 | // new(ldigits[fNdigits++]) AliSTARTdigit(tracks,digits); | |
971579f6 | 130 | } |
c345bb4f | 131 | |
6ca40650 | 132 | //_____________________________________________________________________________ |
133 | void AliSTART::BuildGeometry() | |
134 | { | |
135 | // | |
136 | // Build simple ROOT TNode geometry for event display | |
137 | // | |
ef51244a | 138 | TNode *node, *top; |
6ca40650 | 139 | const int kColorSTART = 19; |
140 | // | |
ef51244a | 141 | top=gAlice->GetGeometry()->GetNode("alice"); |
6ca40650 | 142 | |
143 | // START define the different volumes | |
144 | new TRotMatrix("rot999","rot999", 90,0,90,90,180,0); | |
145 | ||
146 | new TTUBE("S_STR1","START volume 1","void",5.,10.7,5.3); | |
ef51244a | 147 | top->cd(); |
148 | node = new TNode("STR1","STR1","S_STR1",0,0,75.,""); | |
149 | node->SetLineColor(kColorSTART); | |
150 | fNodes->Add(node); | |
6ca40650 | 151 | |
152 | new TTUBE("S_STR2","START volume 2","void",5.,10.7,5.3); | |
ef51244a | 153 | top->cd(); |
154 | node = new TNode("STR2","STR2","S_STR2",0,0,-75,"rot999"); | |
155 | node->SetLineColor(kColorSTART); | |
156 | fNodes->Add(node); | |
6ca40650 | 157 | } |
158 | ||
159 | //_____________________________________________________________________________ | |
160 | Int_t AliSTART::DistanceToPrimitive(Int_t px, Int_t py) | |
161 | { | |
162 | // | |
163 | // Calculate the distance from the mouse to the START on the screen | |
164 | // Dummy routine | |
165 | // | |
166 | return 9999; | |
167 | } | |
168 | ||
6ca40650 | 169 | //------------------------------------------------------------------------- |
170 | void AliSTART::Init() | |
171 | { | |
172 | // | |
173 | // Initialis the START after it has been built | |
174 | Int_t i; | |
6ca40650 | 175 | // |
176 | printf("\n"); | |
177 | for(i=0;i<35;i++) printf("*"); | |
178 | printf(" START_INIT "); | |
179 | for(i=0;i<35;i++) printf("*"); | |
180 | printf("\n"); | |
181 | // | |
182 | // Here the START initialisation code (if any!) | |
183 | for(i=0;i<80;i++) printf("*"); | |
184 | printf("\n"); | |
971579f6 | 185 | // |
186 | // | |
c345bb4f | 187 | // fIdSensRad=gMC->VolId("PTOP"); |
188 | // fIdSensPC =gMC->VolId("T0PC"); | |
6ca40650 | 189 | |
190 | } | |
191 | ||
192 | //--------------------------------------------------------------------------- | |
193 | void AliSTART::MakeBranch(Option_t* option) | |
194 | { | |
ef51244a | 195 | // |
196 | // Specific START branches | |
197 | // | |
c345bb4f | 198 | AliSTARTdigit *digits; |
6ca40650 | 199 | // Create Tree branches for the START. |
c345bb4f | 200 | Int_t buffersize = 400; |
6ca40650 | 201 | char branchname[10]; |
202 | sprintf(branchname,"%s",GetName()); | |
203 | ||
204 | AliDetector::MakeBranch(option); | |
205 | ||
ef51244a | 206 | TTree *td = gAlice->TreeD(); |
c345bb4f | 207 | digits = new AliSTARTdigit(); |
ef51244a | 208 | td->Branch(branchname,"AliSTARTdigit",&digits, buffersize); |
c345bb4f | 209 | printf("Making Branch %s for digits\n",branchname); |
210 | ||
211 | /* | |
212 | gAlice->TreeR()->Branch(branchname,"Int_t",&fZposit, buffersize); | |
213 | printf("Making Branch %s for vertex position %d\n",branchname); | |
214 | */ | |
6ca40650 | 215 | } |
971579f6 | 216 | |
217 | //_____________________________________________________________________________ | |
c345bb4f | 218 | |
971579f6 | 219 | void AliSTART::Hit2digit(Int_t evnum) |
220 | { | |
ef51244a | 221 | // |
222 | // From hits to digits | |
223 | // | |
224 | Float_t x,y,e; | |
971579f6 | 225 | Int_t nbytes = 0; |
ef51244a | 226 | Int_t hit; |
971579f6 | 227 | Int_t nhits; |
228 | Int_t volume,pmt; | |
c345bb4f | 229 | char nameTH[8],nameTD[8]; |
230 | Float_t timediff,timeright,timeleft,timeav; | |
231 | Float_t besttimeright,besttimeleft,meanTime; | |
ef51244a | 232 | Int_t channelWidth=10; |
971579f6 | 233 | |
234 | TParticle *particle; | |
971579f6 | 235 | AliSTARThit *startHit; |
236 | ||
c345bb4f | 237 | Int_t buffersize=256; |
238 | Int_t split=1; | |
239 | ||
240 | digits= new AliSTARTdigit(); | |
241 | TBranch *bDig=0; | |
971579f6 | 242 | |
c345bb4f | 243 | |
244 | // Event ------------------------- LOOP | |
245 | ||
246 | sprintf(nameTD,"TreeD%d",evnum); | |
ef51244a | 247 | TTree *td = new TTree(nameTD,"START"); |
248 | bDig = td->Branch("START","AliSTARTdigit",&digits,buffersize,split); | |
971579f6 | 249 | |
250 | besttimeright=9999.; | |
251 | besttimeleft=9999.; | |
ef51244a | 252 | Int_t timeDiff=0; |
253 | Int_t timeAv=0; | |
971579f6 | 254 | |
255 | Int_t nparticles = gAlice->GetEvent(evnum); | |
256 | if (nparticles <= 0) return; | |
257 | printf("\n nparticles %d\n",nparticles); | |
258 | ||
ef51244a | 259 | TClonesArray *particles = gAlice->Particles(); |
c345bb4f | 260 | |
971579f6 | 261 | sprintf(nameTH,"TreeH%d",evnum); |
262 | printf("%s\n",nameTH); | |
ef51244a | 263 | TTree *th = gAlice->TreeH(); |
264 | Int_t ntracks = (Int_t) th->GetEntries(); | |
971579f6 | 265 | if (ntracks<=0) return; |
266 | // Start loop on tracks in the hits containers | |
267 | for (Int_t track=0; track<ntracks;track++) { | |
268 | gAlice->ResetHits(); | |
ef51244a | 269 | nbytes += th->GetEvent(track); |
270 | particle=(TParticle*)particles->UncheckedAt(track); | |
c345bb4f | 271 | nhits =fHits->GetEntriesFast(); |
272 | ||
971579f6 | 273 | for (hit=0;hit<nhits;hit++) { |
274 | startHit = (AliSTARThit*)fHits->UncheckedAt(hit); | |
275 | pmt=startHit->fPmt; | |
276 | e=startHit->fEtot; | |
94de3818 | 277 | x=startHit->X(); |
278 | y=startHit->Y(); | |
971579f6 | 279 | volume = startHit->fVolume; |
280 | if(volume==1){ | |
281 | timeright = startHit->fTime; | |
282 | if(timeright<besttimeright) { | |
283 | besttimeright=timeright; | |
971579f6 | 284 | } //timeright |
285 | }//time for right shoulder | |
286 | if(volume==2){ | |
287 | timeleft = startHit->fTime; | |
288 | // printf("timeleft %f\n",timeleft); | |
289 | if(timeleft<besttimeleft) { | |
290 | besttimeleft=timeleft; | |
971579f6 | 291 | } //timeleftbest |
292 | }//time for left shoulder | |
293 | } //hit loop | |
294 | } //track loop | |
971579f6 | 295 | |
c345bb4f | 296 | //folding with experimental time distribution |
ef51244a | 297 | Float_t besttimerightGaus=gRandom->Gaus(besttimeright,0.05); |
298 | Float_t besttimeleftGaus=gRandom->Gaus(besttimeleft,0.05); | |
299 | timediff=besttimerightGaus-besttimeleftGaus; | |
300 | meanTime=(besttimerightGaus+besttimeleftGaus)/2.; | |
301 | if ( TMath::Abs(timediff)<2. && meanTime<3.) | |
c345bb4f | 302 | { |
ef51244a | 303 | //we assume centre of bunch is 5ns after TTS signal |
304 | //TOF values are relative of the end of bunch | |
305 | Float_t ppBunch=25; | |
971579f6 | 306 | |
ef51244a | 307 | ppBunch=ppBunch-10/2; |
c345bb4f | 308 | Float_t t1=1000.*besttimeleftGaus; |
309 | Float_t t2=1000.*besttimerightGaus; | |
ef51244a | 310 | t1=t1/channelWidth+ppBunch; //time in ps to channelWidth |
311 | t2=t2/channelWidth+ppBunch; //time in ps to channelWidth | |
c345bb4f | 312 | |
313 | timeav=(t1+t2)/2.; | |
314 | ||
315 | // Time to TDC signal | |
316 | // 256 channels for timediff, range 1ns | |
317 | ||
ef51244a | 318 | timediff=128+1000*timediff/channelWidth; // time in ps |
319 | ||
320 | timeAv = (Int_t)(timeav); // time (ps) channel numbres | |
321 | timeDiff = (Int_t)(timediff); // time ( ps) channel numbres | |
322 | digits->Set(timeAv,timeDiff); | |
323 | } | |
324 | else | |
325 | {timeAv=999999; timeDiff=99999;} | |
326 | td->Fill(); | |
c345bb4f | 327 | digits->MyDump(); |
ef51244a | 328 | printf("digits-> %d \n",digits->GetTime()); |
329 | td->Write(); | |
330 | // } //timediff | |
c345bb4f | 331 | |
332 | ||
333 | } // end macro | |
334 | ||
335 | ||
336 | ||
337 | ||
338 | ||
339 | ||
340 | ||
341 | ||
342 | ||
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971579f6 | 344 | |
ef51244a | 345 | |
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c345bb4f | 347 |