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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 | $Log$ | |
528332ba | 18 | Revision 1.10 2000/10/02 21:28:13 fca |
19 | Removal of useless dependecies via forward declarations | |
20 | ||
94de3818 | 21 | Revision 1.9 2000/07/13 16:41:29 fca |
22 | New START corrected for coding conventions | |
23 | ||
ef51244a | 24 | Revision 1.8 2000/03/27 17:24:25 alla |
25 | Modifing geometry | |
26 | ||
c345bb4f | 27 | Revision 1.6 2000/01/21 15:45:23 fca |
28 | New Version from Alla | |
29 | ||
971579f6 | 30 | Revision 1.5 2000/01/19 17:17:15 fca |
31 | Introducing a list of lists of hits -- more hits allowed for detector now | |
32 | ||
1cedd08a | 33 | Revision 1.4 1999/11/12 15:04:00 fca |
34 | Modifications from A.Maevskaya | |
35 | ||
82fc3fb3 | 36 | Revision 1.3 1999/09/29 09:24:29 fca |
37 | Introduction of the Copyright and cvs Log | |
38 | ||
4c039060 | 39 | */ |
40 | ||
6ca40650 | 41 | /////////////////////////////////////////////////////////////////////////////// |
42 | // // | |
43 | // START (T-Zero) Detector // | |
44 | // This class contains the base procedures for the START // | |
45 | // detector // | |
46 | // // | |
47 | //Begin_Html | |
48 | /* | |
49 | <img src="gif/AliSTARTClass.gif"> | |
50 | </pre> | |
51 | <br clear=left> | |
52 | <font size=+2 color=red> | |
53 | <p>The responsible person for this module is | |
54 | <a href="mailto:Alla.Maevskaia@cern.ch">Alla Maevskaia</a>. | |
55 | </font> | |
56 | <pre> | |
57 | */ | |
58 | //End_Html | |
59 | // // | |
60 | // // | |
61 | /////////////////////////////////////////////////////////////////////////////// | |
62 | ||
6ca40650 | 63 | #include <iostream.h> |
64 | #include <fstream.h> | |
971579f6 | 65 | |
66 | #include "TMath.h" | |
67 | #include "TTUBE.h" | |
68 | #include "TNode.h" | |
c345bb4f | 69 | #include "TRandom.h" |
971579f6 | 70 | #include "TGeometry.h" |
71 | #include "AliRun.h" | |
72 | #include "AliSTART.h" | |
73 | #include "AliSTARTdigit.h" | |
6ca40650 | 74 | #include "AliMC.h" |
971579f6 | 75 | #include "AliSTARThit.h" |
c345bb4f | 76 | #include "AliSTARTvertex.h" |
971579f6 | 77 | |
6ca40650 | 78 | ClassImp(AliSTART) |
ef51244a | 79 | |
80 | static AliSTARTdigit *digits; | |
81 | ||
6ca40650 | 82 | //_____________________________________________________________________________ |
99560b47 | 83 | AliSTART::AliSTART() |
6ca40650 | 84 | { |
85 | // | |
86 | // Default constructor for class AliSTART | |
87 | // | |
88 | fIshunt = 0; | |
971579f6 | 89 | fHits = 0; |
90 | fDigits = 0; | |
6ca40650 | 91 | } |
92 | ||
93 | //_____________________________________________________________________________ | |
94 | AliSTART::AliSTART(const char *name, const char *title) | |
95 | : AliDetector(name,title) | |
96 | { | |
97 | // | |
98 | // Standard constructor for START Detector | |
99 | // | |
971579f6 | 100 | |
c345bb4f | 101 | |
6ca40650 | 102 | // |
103 | // Initialise Hit array | |
971579f6 | 104 | fHits = new TClonesArray("AliSTARThit", 405); |
c345bb4f | 105 | // gAlice->AddHitList(fHits); |
106 | // fDigits = new TClonesArray("AliSTARTdigit",500); | |
6ca40650 | 107 | |
108 | fIshunt = 0; | |
c345bb4f | 109 | fIdSens = 0; |
6ca40650 | 110 | SetMarkerColor(kRed); |
111 | } | |
112 | ||
113 | //_____________________________________________________________________________ | |
114 | void AliSTART::AddHit(Int_t track, Int_t *vol, Float_t *hits) | |
115 | { | |
116 | // | |
117 | // Add a START hit | |
118 | // | |
119 | TClonesArray &lhits = *fHits; | |
120 | new(lhits[fNhits++]) AliSTARThit(fIshunt,track,vol,hits); | |
121 | } | |
971579f6 | 122 | |
123 | //_____________________________________________________________________________ | |
c345bb4f | 124 | |
971579f6 | 125 | void AliSTART::AddDigit(Int_t *tracks,Int_t *digits) |
126 | { | |
c345bb4f | 127 | |
128 | // Add a START digit to the list | |
129 | ||
130 | // printf (" AddDigit*******"); | |
131 | // TClonesArray &ldigits = *fDigits; | |
132 | // new(ldigits[fNdigits++]) AliSTARTdigit(tracks,digits); | |
971579f6 | 133 | } |
c345bb4f | 134 | |
6ca40650 | 135 | //_____________________________________________________________________________ |
136 | void AliSTART::BuildGeometry() | |
137 | { | |
138 | // | |
139 | // Build simple ROOT TNode geometry for event display | |
140 | // | |
ef51244a | 141 | TNode *node, *top; |
6ca40650 | 142 | const int kColorSTART = 19; |
143 | // | |
ef51244a | 144 | top=gAlice->GetGeometry()->GetNode("alice"); |
6ca40650 | 145 | |
146 | // START define the different volumes | |
147 | new TRotMatrix("rot999","rot999", 90,0,90,90,180,0); | |
148 | ||
149 | new TTUBE("S_STR1","START volume 1","void",5.,10.7,5.3); | |
ef51244a | 150 | top->cd(); |
151 | node = new TNode("STR1","STR1","S_STR1",0,0,75.,""); | |
152 | node->SetLineColor(kColorSTART); | |
153 | fNodes->Add(node); | |
6ca40650 | 154 | |
155 | new TTUBE("S_STR2","START volume 2","void",5.,10.7,5.3); | |
ef51244a | 156 | top->cd(); |
157 | node = new TNode("STR2","STR2","S_STR2",0,0,-75,"rot999"); | |
158 | node->SetLineColor(kColorSTART); | |
159 | fNodes->Add(node); | |
6ca40650 | 160 | } |
161 | ||
162 | //_____________________________________________________________________________ | |
163 | Int_t AliSTART::DistanceToPrimitive(Int_t px, Int_t py) | |
164 | { | |
165 | // | |
166 | // Calculate the distance from the mouse to the START on the screen | |
167 | // Dummy routine | |
168 | // | |
169 | return 9999; | |
170 | } | |
171 | ||
6ca40650 | 172 | //------------------------------------------------------------------------- |
173 | void AliSTART::Init() | |
174 | { | |
175 | // | |
176 | // Initialis the START after it has been built | |
177 | Int_t i; | |
6ca40650 | 178 | // |
179 | printf("\n"); | |
180 | for(i=0;i<35;i++) printf("*"); | |
181 | printf(" START_INIT "); | |
182 | for(i=0;i<35;i++) printf("*"); | |
183 | printf("\n"); | |
184 | // | |
185 | // Here the START initialisation code (if any!) | |
186 | for(i=0;i<80;i++) printf("*"); | |
187 | printf("\n"); | |
971579f6 | 188 | // |
189 | // | |
c345bb4f | 190 | // fIdSensRad=gMC->VolId("PTOP"); |
191 | // fIdSensPC =gMC->VolId("T0PC"); | |
6ca40650 | 192 | |
193 | } | |
194 | ||
195 | //--------------------------------------------------------------------------- | |
196 | void AliSTART::MakeBranch(Option_t* option) | |
197 | { | |
ef51244a | 198 | // |
199 | // Specific START branches | |
200 | // | |
c345bb4f | 201 | AliSTARTdigit *digits; |
6ca40650 | 202 | // Create Tree branches for the START. |
c345bb4f | 203 | Int_t buffersize = 400; |
6ca40650 | 204 | char branchname[10]; |
205 | sprintf(branchname,"%s",GetName()); | |
206 | ||
207 | AliDetector::MakeBranch(option); | |
208 | ||
ef51244a | 209 | TTree *td = gAlice->TreeD(); |
c345bb4f | 210 | digits = new AliSTARTdigit(); |
528332ba | 211 | td->Branch(branchname,"AliSTARTdigit",digits, buffersize); |
c345bb4f | 212 | printf("Making Branch %s for digits\n",branchname); |
213 | ||
214 | /* | |
215 | gAlice->TreeR()->Branch(branchname,"Int_t",&fZposit, buffersize); | |
216 | printf("Making Branch %s for vertex position %d\n",branchname); | |
217 | */ | |
6ca40650 | 218 | } |
971579f6 | 219 | |
220 | //_____________________________________________________________________________ | |
c345bb4f | 221 | |
971579f6 | 222 | void AliSTART::Hit2digit(Int_t evnum) |
223 | { | |
ef51244a | 224 | // |
225 | // From hits to digits | |
226 | // | |
227 | Float_t x,y,e; | |
971579f6 | 228 | Int_t nbytes = 0; |
ef51244a | 229 | Int_t hit; |
971579f6 | 230 | Int_t nhits; |
231 | Int_t volume,pmt; | |
c345bb4f | 232 | char nameTH[8],nameTD[8]; |
233 | Float_t timediff,timeright,timeleft,timeav; | |
234 | Float_t besttimeright,besttimeleft,meanTime; | |
ef51244a | 235 | Int_t channelWidth=10; |
971579f6 | 236 | |
237 | TParticle *particle; | |
971579f6 | 238 | AliSTARThit *startHit; |
239 | ||
c345bb4f | 240 | Int_t buffersize=256; |
241 | Int_t split=1; | |
242 | ||
243 | digits= new AliSTARTdigit(); | |
244 | TBranch *bDig=0; | |
971579f6 | 245 | |
c345bb4f | 246 | |
247 | // Event ------------------------- LOOP | |
248 | ||
249 | sprintf(nameTD,"TreeD%d",evnum); | |
ef51244a | 250 | TTree *td = new TTree(nameTD,"START"); |
251 | bDig = td->Branch("START","AliSTARTdigit",&digits,buffersize,split); | |
971579f6 | 252 | |
253 | besttimeright=9999.; | |
254 | besttimeleft=9999.; | |
ef51244a | 255 | Int_t timeDiff=0; |
256 | Int_t timeAv=0; | |
971579f6 | 257 | |
258 | Int_t nparticles = gAlice->GetEvent(evnum); | |
259 | if (nparticles <= 0) return; | |
260 | printf("\n nparticles %d\n",nparticles); | |
261 | ||
ef51244a | 262 | TClonesArray *particles = gAlice->Particles(); |
c345bb4f | 263 | |
971579f6 | 264 | sprintf(nameTH,"TreeH%d",evnum); |
265 | printf("%s\n",nameTH); | |
ef51244a | 266 | TTree *th = gAlice->TreeH(); |
267 | Int_t ntracks = (Int_t) th->GetEntries(); | |
971579f6 | 268 | if (ntracks<=0) return; |
269 | // Start loop on tracks in the hits containers | |
270 | for (Int_t track=0; track<ntracks;track++) { | |
271 | gAlice->ResetHits(); | |
ef51244a | 272 | nbytes += th->GetEvent(track); |
273 | particle=(TParticle*)particles->UncheckedAt(track); | |
c345bb4f | 274 | nhits =fHits->GetEntriesFast(); |
275 | ||
971579f6 | 276 | for (hit=0;hit<nhits;hit++) { |
277 | startHit = (AliSTARThit*)fHits->UncheckedAt(hit); | |
278 | pmt=startHit->fPmt; | |
279 | e=startHit->fEtot; | |
94de3818 | 280 | x=startHit->X(); |
281 | y=startHit->Y(); | |
971579f6 | 282 | volume = startHit->fVolume; |
283 | if(volume==1){ | |
284 | timeright = startHit->fTime; | |
285 | if(timeright<besttimeright) { | |
286 | besttimeright=timeright; | |
971579f6 | 287 | } //timeright |
288 | }//time for right shoulder | |
289 | if(volume==2){ | |
290 | timeleft = startHit->fTime; | |
291 | // printf("timeleft %f\n",timeleft); | |
292 | if(timeleft<besttimeleft) { | |
293 | besttimeleft=timeleft; | |
971579f6 | 294 | } //timeleftbest |
295 | }//time for left shoulder | |
296 | } //hit loop | |
297 | } //track loop | |
971579f6 | 298 | |
c345bb4f | 299 | //folding with experimental time distribution |
ef51244a | 300 | Float_t besttimerightGaus=gRandom->Gaus(besttimeright,0.05); |
301 | Float_t besttimeleftGaus=gRandom->Gaus(besttimeleft,0.05); | |
302 | timediff=besttimerightGaus-besttimeleftGaus; | |
303 | meanTime=(besttimerightGaus+besttimeleftGaus)/2.; | |
304 | if ( TMath::Abs(timediff)<2. && meanTime<3.) | |
c345bb4f | 305 | { |
ef51244a | 306 | //we assume centre of bunch is 5ns after TTS signal |
307 | //TOF values are relative of the end of bunch | |
308 | Float_t ppBunch=25; | |
971579f6 | 309 | |
ef51244a | 310 | ppBunch=ppBunch-10/2; |
c345bb4f | 311 | Float_t t1=1000.*besttimeleftGaus; |
312 | Float_t t2=1000.*besttimerightGaus; | |
ef51244a | 313 | t1=t1/channelWidth+ppBunch; //time in ps to channelWidth |
314 | t2=t2/channelWidth+ppBunch; //time in ps to channelWidth | |
c345bb4f | 315 | |
316 | timeav=(t1+t2)/2.; | |
317 | ||
318 | // Time to TDC signal | |
319 | // 256 channels for timediff, range 1ns | |
320 | ||
ef51244a | 321 | timediff=128+1000*timediff/channelWidth; // time in ps |
322 | ||
323 | timeAv = (Int_t)(timeav); // time (ps) channel numbres | |
324 | timeDiff = (Int_t)(timediff); // time ( ps) channel numbres | |
325 | digits->Set(timeAv,timeDiff); | |
326 | } | |
327 | else | |
328 | {timeAv=999999; timeDiff=99999;} | |
329 | td->Fill(); | |
c345bb4f | 330 | digits->MyDump(); |
ef51244a | 331 | printf("digits-> %d \n",digits->GetTime()); |
332 | td->Write(); | |
333 | // } //timediff | |
c345bb4f | 334 | |
335 | ||
336 | } // end macro | |
337 | ||
338 | ||
339 | ||
340 | ||
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971579f6 | 347 | |
ef51244a | 348 | |
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c345bb4f | 350 |