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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 | $Log$ |
18 | */ |
19 | |
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20 | /////////////////////////////////////////////////////////////////////////////// |
21 | // // |
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22 | // Time Of Flight: as for version 1 but full coverage // |
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23 | // This class contains the functions for version 3 of the Time Of Flight // |
24 | // detector. // |
25 | // // |
26 | //Begin_Html |
27 | /* |
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28 | <img src="picts/AliTOFv3Class.gif"> |
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29 | */ |
30 | //End_Html |
31 | // // |
32 | /////////////////////////////////////////////////////////////////////////////// |
33 | |
34 | #include "AliTOFv3.h" |
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35 | #include "AliRun.h" |
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36 | #include "AliConst.h" |
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37 | |
38 | ClassImp(AliTOFv3) |
39 | |
40 | //_____________________________________________________________________________ |
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41 | AliTOFv3::AliTOFv3() |
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42 | { |
43 | // |
44 | // Default constructor |
45 | // |
46 | } |
47 | |
48 | //_____________________________________________________________________________ |
49 | AliTOFv3::AliTOFv3(const char *name, const char *title) |
50 | : AliTOF(name,title) |
51 | { |
52 | // |
53 | // Standard constructor |
54 | // |
55 | } |
56 | |
57 | //_____________________________________________________________________________ |
58 | void AliTOFv3::CreateGeometry() |
59 | { |
60 | // |
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61 | // Create geometry for Time Of Flight version 0 |
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62 | // |
63 | //Begin_Html |
64 | /* |
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65 | <img src="picts/AliTOFv3.gif"> |
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66 | */ |
67 | //End_Html |
68 | // |
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69 | // |
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70 | // Create common geometry |
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71 | // |
72 | AliTOF::CreateGeometry(); |
73 | } |
74 | |
75 | //_____________________________________________________________________________ |
76 | void AliTOFv3::TOFpc(Float_t xm, Float_t ym, Float_t zm0, |
77 | Float_t zm1, Float_t zm2) |
78 | { |
79 | // |
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80 | // Definition of the Time Of Fligh Resistive Plate Chambers |
81 | // xm, ym, zm - sizes of TOF modules (large) |
82 | |
83 | Float_t ycoor; |
84 | Float_t zazor, xp, yp, zp; |
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85 | Float_t par[10]; |
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86 | |
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87 | Int_t *idtmed = fIdtmed->GetArray()-499; |
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88 | |
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89 | // gap in RPC chamber |
90 | zazor = .03; |
91 | // Sizes of RPC chamber |
92 | xp = 3.0; //small pixel |
93 | //xp = 3.9; //large pixel |
94 | yp = 12.3*0.05; // 5% X0 of glass |
95 | zp = 3.0; //small pixel |
96 | //zp = 4.1; //large pixel |
97 | // Large not sensitive volumes with CO2 |
98 | par[0] = xm/2; |
99 | par[1] = ym/2; |
100 | par[2] = zm0/2; |
101 | gMC->Gsvolu("FBT1", "BOX ", idtmed[506], par, 3); // CO2 |
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102 | gMC->Gspos("FBT1", 0, "FTO1", 0., 0., 0., 0, "ONLY"); |
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103 | gMC->Gsdvn("FDT1", "FBT1", 2, 3); // 2 large modules along Z |
104 | par[2] = zm1 / 2; |
105 | gMC->Gsvolu("FBT2", "BOX ", idtmed[506], par, 3); // CO2 |
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106 | gMC->Gspos("FBT2", 1, "FTO2", 0., 0., 0., 0, "ONLY"); |
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107 | gMC->Gsdvn("FDT2", "FBT2", 2, 3); // 2 (PHOS) modules along Z |
108 | par[2] = zm2 / 2; |
109 | gMC->Gsvolu("FBT3", "BOX ", idtmed[506], par, 3); // CO2 |
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110 | gMC->Gspos("FBT3", 2, "FTO3", 0., 0., 0., 0, "ONLY"); |
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111 | gMC->Gsdvn("FDT3", "FBT3", 1, 3); // 1 (RICH) module along Z |
112 | // |
113 | // subtraction of dead boundaries in X=2 cm and Z=7/2 cm |
114 | par[0] = par[0]-2.; |
115 | Int_t nz0, nz1, nz2, nx; //- numbers of pixels |
116 | nx = Int_t (par[0]*2/xp); |
117 | cout <<"************************* TOF geometry **************************"<<endl; |
118 | cout<< "nx = "<< nx << " x size = "<< par[0]*2/nx << endl; |
119 | par[1] = -1; |
120 | par[2] = (zm0 / 2.)/2.; //this is half size of module after division by 2 |
121 | par[2]=par[2]-7/2.; |
122 | nz0 = Int_t (par[2]*2/zp); |
123 | cout<< "nz0 = "<< nz0 << " z0 size = "<< par[2]*2/nz0 << endl; |
124 | gMC->Gsvolu("FLT1", "BOX ", idtmed[506], par, 3); // CO2 |
125 | gMC->Gspos("FLT1", 0, "FDT1", 0., 0., 0., 0, "ONLY"); |
126 | par[2] = (zm1 / 2.)/2.; //this is half size of module after division by 2 |
127 | par[2]=par[2]-7/2.; |
128 | nz1 = Int_t (par[2]*2/zp); |
129 | cout<< "nz1 = "<< nz1 << " z1 size = "<< par[2]*2/nz1 << endl; |
130 | gMC->Gsvolu("FLT2", "BOX ", idtmed[506], par, 3); // CO2 |
131 | gMC->Gspos("FLT2", 0, "FDT2", 0., 0., 0., 0, "ONLY"); |
132 | par[2] = (zm2 / 2.); //this is half size of module after division by 1 |
133 | par[2]=par[2]-7/2.; |
134 | nz2 = Int_t (par[2]*2/zp); |
135 | cout<< "nz2 = "<< nz2 << " z2 size = "<< par[2]*2/nz2 << endl; |
136 | gMC->Gsvolu("FLT3", "BOX ", idtmed[506], par, 3); // CO2 |
137 | gMC->Gspos("FLT3", 0, "FDT3", 0., 0., 0., 0, "ONLY"); |
138 | // |
139 | ////////// Layers before detector //////////////////// |
140 | // Mylar layer in front 0.5mm thick at the beginning |
141 | par[0] = -1; |
142 | par[1] = 0.05 / 2; |
143 | par[2] = -1; |
144 | ycoor = -ym/2 + par[1]; |
145 | gMC->Gsvolu("FMY1", "BOX ", idtmed[511], par, 3); // Mylar |
146 | gMC->Gspos("FMY1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY"); |
147 | gMC->Gsvolu("FMY2", "BOX ", idtmed[511], par, 3); // Mylar |
148 | gMC->Gspos("FMY2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY"); |
149 | gMC->Gsvolu("FMY3", "BOX ", idtmed[511], par, 3); // Mylar |
150 | gMC->Gspos("FMY3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY"); |
151 | // Honeycomb layer (1cm of special!!! polyethilene) |
152 | ycoor = ycoor + par[1]; |
153 | par[0] = -1; |
154 | par[1] = 1. / 2; |
155 | par[2] = -1; |
156 | ycoor = ycoor + par[1]; |
157 | gMC->Gsvolu("FPL1", "BOX ", idtmed[503], par, 3); // Hony |
158 | gMC->Gspos("FPL1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY"); |
159 | gMC->Gsvolu("FPL2", "BOX ", idtmed[503], par, 3); // Hony |
160 | gMC->Gspos("FPL2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY"); |
161 | gMC->Gsvolu("FPL3", "BOX ", idtmed[503], par, 3); // Hony |
162 | gMC->Gspos("FPL3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY"); |
163 | // |
164 | ///////////////// Detector itself ////////////////////// |
165 | par[0] = -1; |
166 | par[1] = yp/2; // 5 %X0 thick of glass |
167 | par[2] = -1; |
168 | ycoor = -ym/2 + 2; |
169 | gMC->Gsvolu("FLD1", "BOX ", idtmed[514], par, 3); // Glass |
170 | gMC->Gspos("FLD1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY"); |
171 | gMC->Gsvolu("FLD2", "BOX ", idtmed[514], par, 3); // Glass |
172 | gMC->Gspos("FLD2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY"); |
173 | gMC->Gsvolu("FLD3", "BOX ", idtmed[514], par, 3); // Glass |
174 | gMC->Gspos("FLD3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY"); |
175 | // |
176 | gMC->Gsdvn("FLZ1", "FLD1", nz0, 3); //pixel size xp=zp=3 |
177 | gMC->Gsdvn("FLZ2", "FLD2", nz1, 3); |
178 | gMC->Gsdvn("FLZ3", "FLD3", nz2, 3); |
179 | gMC->Gsdvn("FLX1", "FLZ1", nx, 1); |
180 | gMC->Gsdvn("FLX2", "FLZ2", nx, 1); |
181 | gMC->Gsdvn("FLX3", "FLZ3", nx, 1); |
182 | // RPC pixel itself |
183 | par[0] = -1;//xp/2; |
184 | par[1] = -1;//yp/2; // 5 %X0 thick of glass |
185 | par[2] = -1;//zp/2; |
186 | gMC->Gsvolu("FPA0", "BOX ", idtmed[514], par, 3);// Glass |
187 | gMC->Gspos("FPA0", 1, "FLX1", 0., 0., 0., 0, "ONLY"); |
188 | gMC->Gspos("FPA0", 2, "FLX2", 0., 0., 0., 0, "ONLY"); |
189 | gMC->Gspos("FPA0", 3, "FLX3", 0., 0., 0., 0, "ONLY"); |
190 | // Freon gas sencitive volume |
191 | par[0] = -1; |
192 | par[1] = zazor/2; |
193 | par[2] = -1; |
194 | gMC->Gsvolu("FPG0", "BOX ", idtmed[513], par, 3);// Freon |
195 | gMC->Gspos("FPG0", 0, "FPA0", 0., 0., 0., 0, "ONLY"); |
196 | // |
197 | ////////// Layers after detector //////////////////// |
198 | // Honeycomb layer after (3cm) |
199 | par[0] = -1; |
200 | par[1] = 1.2 / 2.; |
201 | par[2] = -1; |
202 | ycoor = -ym/2 + 6. - par[1]; |
203 | gMC->Gsvolu("FPE1", "BOX ", idtmed[503], par, 3); // Hony |
204 | gMC->Gspos("FPE1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY"); |
205 | gMC->Gsvolu("FPE2", "BOX ", idtmed[503], par, 3); // Hony |
206 | gMC->Gspos("FPE2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY"); |
207 | gMC->Gsvolu("FPE3", "BOX ", idtmed[503], par, 3); // Hony |
208 | gMC->Gspos("FPE3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY"); |
209 | // Electronics (Cu) after |
210 | par[0] = -1; |
211 | par[1] = 1.43*0.05 / 2.; // 5% of X0 |
212 | par[2] = -1; |
213 | ycoor = -ym/2 + 6.+par[1]; |
214 | gMC->Gsvolu("FEC1", "BOX ", idtmed[501], par, 3); // Cu |
215 | gMC->Gspos("FEC1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY"); |
216 | gMC->Gsvolu("FEC2", "BOX ", idtmed[501], par, 3); // Cu |
217 | gMC->Gspos("FEC2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY"); |
218 | gMC->Gsvolu("FEC3", "BOX ", idtmed[501], par, 3); // Cu |
219 | gMC->Gspos("FEC3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY"); |
220 | // Cooling water after |
221 | ycoor = ycoor+par[1]; |
222 | par[0] = -1; |
223 | par[1] = 36.1*0.02 / 2.; // 2% of X0 |
224 | par[2] = -1; |
225 | ycoor = ycoor+par[1]; |
226 | gMC->Gsvolu("FWA1", "BOX ", idtmed[515], par, 3); // Water |
227 | gMC->Gspos("FWA1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY"); |
228 | gMC->Gsvolu("FWA2", "BOX ", idtmed[515], par, 3); // Water |
229 | gMC->Gspos("FWA2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY"); |
230 | gMC->Gsvolu("FWA3", "BOX ", idtmed[515], par, 3); // Water |
231 | gMC->Gspos("FWA3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY"); |
232 | //back plate honycomb (2cm) |
233 | par[0] = -1; |
234 | par[1] = 2 / 2.; |
235 | par[2] = -1; |
236 | ycoor = ym/2 - par[1]; |
237 | gMC->Gsvolu("FEG1", "BOX ", idtmed[503], par, 3); // Hony |
238 | gMC->Gspos("FEG1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY"); |
239 | gMC->Gsvolu("FEG2", "BOX ", idtmed[503], par, 3); // Hony |
240 | gMC->Gspos("FEG2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY"); |
241 | gMC->Gsvolu("FEG3", "BOX ", idtmed[503], par, 3); // Hony |
242 | gMC->Gspos("FEG3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY"); |
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243 | } |
244 | |
245 | //_____________________________________________________________________________ |
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246 | void AliTOFv3::DrawModule() |
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247 | { |
248 | // |
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249 | // Draw a shaded view of the Time Of Flight version 0 |
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250 | // |
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251 | // Set everything unseen |
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252 | gMC->Gsatt("*", "seen", -1); |
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253 | // |
254 | // Set ALIC mother transparent |
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255 | gMC->Gsatt("ALIC","SEEN",0); |
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256 | // |
257 | // Set the volumes visible |
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258 | gMC->Gsatt("ALIC","SEEN",0); |
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259 | gMC->Gsatt("FBAR","SEEN",1); |
260 | gMC->Gsatt("FTO1","SEEN",1); |
261 | gMC->Gsatt("FTO2","SEEN",1); |
262 | gMC->Gsatt("FTO3","SEEN",1); |
263 | gMC->Gsatt("FBT1","SEEN",1); |
264 | gMC->Gsatt("FBT2","SEEN",1); |
265 | gMC->Gsatt("FBT3","SEEN",1); |
266 | gMC->Gsatt("FDT1","SEEN",1); |
267 | gMC->Gsatt("FDT2","SEEN",1); |
268 | gMC->Gsatt("FDT3","SEEN",1); |
269 | gMC->Gsatt("FLT1","SEEN",1); |
270 | gMC->Gsatt("FLT2","SEEN",1); |
271 | gMC->Gsatt("FLT3","SEEN",1); |
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272 | // |
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273 | gMC->Gdopt("hide", "on"); |
274 | gMC->Gdopt("shad", "on"); |
275 | gMC->Gsatt("*", "fill", 7); |
276 | gMC->SetClipBox("."); |
277 | gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000); |
278 | gMC->DefaultRange(); |
279 | gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .02, .02); |
280 | gMC->Gdhead(1111, "Time Of Flight"); |
281 | gMC->Gdman(18, 4, "MAN"); |
282 | gMC->Gdopt("hide","off"); |
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283 | } |
284 | |
285 | //_____________________________________________________________________________ |
286 | void AliTOFv3::CreateMaterials() |
287 | { |
288 | // |
289 | // Define materials for the Time Of Flight |
290 | // |
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291 | AliTOF::CreateMaterials(); |
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292 | } |
293 | |
294 | //_____________________________________________________________________________ |
295 | void AliTOFv3::Init() |
296 | { |
297 | // |
298 | // Initialise the detector after the geometry has been defined |
299 | // |
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300 | AliTOF::Init(); |
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301 | fIdFTO2=gMC->VolId("FTO2"); |
302 | fIdFTO3=gMC->VolId("FTO3"); |
303 | fIdFLT1=gMC->VolId("FLT1"); |
304 | fIdFLT2=gMC->VolId("FLT2"); |
305 | fIdFLT3=gMC->VolId("FLT3"); |
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306 | } |
307 | |
308 | //_____________________________________________________________________________ |
309 | void AliTOFv3::StepManager() |
310 | { |
311 | // |
312 | // Procedure called at each step in the Time Of Flight |
313 | // |
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314 | TLorentzVector mom, pos; |
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315 | Float_t hits[8]; |
316 | Int_t vol[3]; |
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317 | Int_t copy, id, i; |
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318 | Int_t *idtmed = fIdtmed->GetArray()-499; |
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319 | if(gMC->GetMedium()==idtmed[514-1] && |
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320 | gMC->IsTrackEntering() && gMC->TrackCharge() |
321 | && gMC->CurrentVolID(copy)==fIdSens) { |
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322 | TClonesArray &lhits = *fHits; |
323 | // |
324 | // Record only charged tracks at entrance |
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325 | gMC->CurrentVolOffID(1,copy); |
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326 | vol[2]=copy; |
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327 | gMC->CurrentVolOffID(3,copy); |
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328 | vol[1]=copy; |
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329 | id=gMC->CurrentVolOffID(8,copy); |
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330 | vol[0]=copy; |
331 | if(id==fIdFTO3) { |
332 | vol[0]+=22; |
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333 | id=gMC->CurrentVolOffID(5,copy); |
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334 | if(id==fIdFLT3) vol[1]+=6; |
335 | } else if (id==fIdFTO2) { |
336 | vol[0]+=20; |
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337 | id=gMC->CurrentVolOffID(5,copy); |
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338 | if(id==fIdFLT2) vol[1]+=8; |
339 | } else { |
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340 | id=gMC->CurrentVolOffID(5,copy); |
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341 | if(id==fIdFLT1) vol[1]+=14; |
342 | } |
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343 | gMC->TrackPosition(pos); |
344 | gMC->TrackMomentum(mom); |
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345 | // |
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346 | Double_t ptot=mom.Rho(); |
347 | Double_t norm=1/ptot; |
348 | for(i=0;i<3;++i) { |
349 | hits[i]=pos[i]; |
350 | hits[i+3]=mom[i]*norm; |
351 | } |
352 | hits[6]=ptot; |
353 | hits[7]=pos[3]; |
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354 | new(lhits[fNhits++]) AliTOFhit(fIshunt,gAlice->CurrentTrack(),vol,hits); |
355 | } |
356 | } |