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1 | /////////////////////////////////////////////////////////////////////////////// |
2 | // // |
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3 | // Time Of Flight: as for version 1 but full coverage // |
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4 | // This class contains the functions for version 3 of the Time Of Flight // |
5 | // detector. // |
6 | // // |
7 | //Begin_Html |
8 | /* |
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9 | <img src="picts/AliTOFv3Class.gif"> |
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10 | */ |
11 | //End_Html |
12 | // // |
13 | /////////////////////////////////////////////////////////////////////////////// |
14 | |
15 | #include "AliTOFv3.h" |
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16 | #include "AliRun.h" |
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17 | #include "AliConst.h" |
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18 | |
19 | ClassImp(AliTOFv3) |
20 | |
21 | //_____________________________________________________________________________ |
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22 | AliTOFv3::AliTOFv3() |
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23 | { |
24 | // |
25 | // Default constructor |
26 | // |
27 | } |
28 | |
29 | //_____________________________________________________________________________ |
30 | AliTOFv3::AliTOFv3(const char *name, const char *title) |
31 | : AliTOF(name,title) |
32 | { |
33 | // |
34 | // Standard constructor |
35 | // |
36 | } |
37 | |
38 | //_____________________________________________________________________________ |
39 | void AliTOFv3::CreateGeometry() |
40 | { |
41 | // |
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42 | // Create geometry for Time Of Flight version 0 |
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43 | // |
44 | //Begin_Html |
45 | /* |
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46 | <img src="picts/AliTOFv3.gif"> |
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47 | */ |
48 | //End_Html |
49 | // |
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50 | // |
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51 | // Create common geometry |
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52 | // |
53 | AliTOF::CreateGeometry(); |
54 | } |
55 | |
56 | //_____________________________________________________________________________ |
57 | void AliTOFv3::TOFpc(Float_t xm, Float_t ym, Float_t zm0, |
58 | Float_t zm1, Float_t zm2) |
59 | { |
60 | // |
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61 | // Definition of the Time Of Fligh Resistive Plate Chambers |
62 | // xm, ym, zm - sizes of TOF modules (large) |
63 | |
64 | Float_t ycoor; |
65 | Float_t zazor, xp, yp, zp; |
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66 | Float_t par[10]; |
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67 | |
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68 | Int_t *idtmed = fIdtmed->GetArray()-499; |
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69 | |
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70 | // gap in RPC chamber |
71 | zazor = .03; |
72 | // Sizes of RPC chamber |
73 | xp = 3.0; //small pixel |
74 | //xp = 3.9; //large pixel |
75 | yp = 12.3*0.05; // 5% X0 of glass |
76 | zp = 3.0; //small pixel |
77 | //zp = 4.1; //large pixel |
78 | // Large not sensitive volumes with CO2 |
79 | par[0] = xm/2; |
80 | par[1] = ym/2; |
81 | par[2] = zm0/2; |
82 | gMC->Gsvolu("FBT1", "BOX ", idtmed[506], par, 3); // CO2 |
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83 | gMC->Gspos("FBT1", 0, "FTO1", 0., 0., 0., 0, "ONLY"); |
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84 | gMC->Gsdvn("FDT1", "FBT1", 2, 3); // 2 large modules along Z |
85 | par[2] = zm1 / 2; |
86 | gMC->Gsvolu("FBT2", "BOX ", idtmed[506], par, 3); // CO2 |
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87 | gMC->Gspos("FBT2", 1, "FTO2", 0., 0., 0., 0, "ONLY"); |
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88 | gMC->Gsdvn("FDT2", "FBT2", 2, 3); // 2 (PHOS) modules along Z |
89 | par[2] = zm2 / 2; |
90 | gMC->Gsvolu("FBT3", "BOX ", idtmed[506], par, 3); // CO2 |
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91 | gMC->Gspos("FBT3", 2, "FTO3", 0., 0., 0., 0, "ONLY"); |
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92 | gMC->Gsdvn("FDT3", "FBT3", 1, 3); // 1 (RICH) module along Z |
93 | // |
94 | // subtraction of dead boundaries in X=2 cm and Z=7/2 cm |
95 | par[0] = par[0]-2.; |
96 | Int_t nz0, nz1, nz2, nx; //- numbers of pixels |
97 | nx = Int_t (par[0]*2/xp); |
98 | cout <<"************************* TOF geometry **************************"<<endl; |
99 | cout<< "nx = "<< nx << " x size = "<< par[0]*2/nx << endl; |
100 | par[1] = -1; |
101 | par[2] = (zm0 / 2.)/2.; //this is half size of module after division by 2 |
102 | par[2]=par[2]-7/2.; |
103 | nz0 = Int_t (par[2]*2/zp); |
104 | cout<< "nz0 = "<< nz0 << " z0 size = "<< par[2]*2/nz0 << endl; |
105 | gMC->Gsvolu("FLT1", "BOX ", idtmed[506], par, 3); // CO2 |
106 | gMC->Gspos("FLT1", 0, "FDT1", 0., 0., 0., 0, "ONLY"); |
107 | par[2] = (zm1 / 2.)/2.; //this is half size of module after division by 2 |
108 | par[2]=par[2]-7/2.; |
109 | nz1 = Int_t (par[2]*2/zp); |
110 | cout<< "nz1 = "<< nz1 << " z1 size = "<< par[2]*2/nz1 << endl; |
111 | gMC->Gsvolu("FLT2", "BOX ", idtmed[506], par, 3); // CO2 |
112 | gMC->Gspos("FLT2", 0, "FDT2", 0., 0., 0., 0, "ONLY"); |
113 | par[2] = (zm2 / 2.); //this is half size of module after division by 1 |
114 | par[2]=par[2]-7/2.; |
115 | nz2 = Int_t (par[2]*2/zp); |
116 | cout<< "nz2 = "<< nz2 << " z2 size = "<< par[2]*2/nz2 << endl; |
117 | gMC->Gsvolu("FLT3", "BOX ", idtmed[506], par, 3); // CO2 |
118 | gMC->Gspos("FLT3", 0, "FDT3", 0., 0., 0., 0, "ONLY"); |
119 | // |
120 | ////////// Layers before detector //////////////////// |
121 | // Mylar layer in front 0.5mm thick at the beginning |
122 | par[0] = -1; |
123 | par[1] = 0.05 / 2; |
124 | par[2] = -1; |
125 | ycoor = -ym/2 + par[1]; |
126 | gMC->Gsvolu("FMY1", "BOX ", idtmed[511], par, 3); // Mylar |
127 | gMC->Gspos("FMY1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY"); |
128 | gMC->Gsvolu("FMY2", "BOX ", idtmed[511], par, 3); // Mylar |
129 | gMC->Gspos("FMY2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY"); |
130 | gMC->Gsvolu("FMY3", "BOX ", idtmed[511], par, 3); // Mylar |
131 | gMC->Gspos("FMY3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY"); |
132 | // Honeycomb layer (1cm of special!!! polyethilene) |
133 | ycoor = ycoor + par[1]; |
134 | par[0] = -1; |
135 | par[1] = 1. / 2; |
136 | par[2] = -1; |
137 | ycoor = ycoor + par[1]; |
138 | gMC->Gsvolu("FPL1", "BOX ", idtmed[503], par, 3); // Hony |
139 | gMC->Gspos("FPL1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY"); |
140 | gMC->Gsvolu("FPL2", "BOX ", idtmed[503], par, 3); // Hony |
141 | gMC->Gspos("FPL2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY"); |
142 | gMC->Gsvolu("FPL3", "BOX ", idtmed[503], par, 3); // Hony |
143 | gMC->Gspos("FPL3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY"); |
144 | // |
145 | ///////////////// Detector itself ////////////////////// |
146 | par[0] = -1; |
147 | par[1] = yp/2; // 5 %X0 thick of glass |
148 | par[2] = -1; |
149 | ycoor = -ym/2 + 2; |
150 | gMC->Gsvolu("FLD1", "BOX ", idtmed[514], par, 3); // Glass |
151 | gMC->Gspos("FLD1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY"); |
152 | gMC->Gsvolu("FLD2", "BOX ", idtmed[514], par, 3); // Glass |
153 | gMC->Gspos("FLD2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY"); |
154 | gMC->Gsvolu("FLD3", "BOX ", idtmed[514], par, 3); // Glass |
155 | gMC->Gspos("FLD3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY"); |
156 | // |
157 | gMC->Gsdvn("FLZ1", "FLD1", nz0, 3); //pixel size xp=zp=3 |
158 | gMC->Gsdvn("FLZ2", "FLD2", nz1, 3); |
159 | gMC->Gsdvn("FLZ3", "FLD3", nz2, 3); |
160 | gMC->Gsdvn("FLX1", "FLZ1", nx, 1); |
161 | gMC->Gsdvn("FLX2", "FLZ2", nx, 1); |
162 | gMC->Gsdvn("FLX3", "FLZ3", nx, 1); |
163 | // RPC pixel itself |
164 | par[0] = -1;//xp/2; |
165 | par[1] = -1;//yp/2; // 5 %X0 thick of glass |
166 | par[2] = -1;//zp/2; |
167 | gMC->Gsvolu("FPA0", "BOX ", idtmed[514], par, 3);// Glass |
168 | gMC->Gspos("FPA0", 1, "FLX1", 0., 0., 0., 0, "ONLY"); |
169 | gMC->Gspos("FPA0", 2, "FLX2", 0., 0., 0., 0, "ONLY"); |
170 | gMC->Gspos("FPA0", 3, "FLX3", 0., 0., 0., 0, "ONLY"); |
171 | // Freon gas sencitive volume |
172 | par[0] = -1; |
173 | par[1] = zazor/2; |
174 | par[2] = -1; |
175 | gMC->Gsvolu("FPG0", "BOX ", idtmed[513], par, 3);// Freon |
176 | gMC->Gspos("FPG0", 0, "FPA0", 0., 0., 0., 0, "ONLY"); |
177 | // |
178 | ////////// Layers after detector //////////////////// |
179 | // Honeycomb layer after (3cm) |
180 | par[0] = -1; |
181 | par[1] = 1.2 / 2.; |
182 | par[2] = -1; |
183 | ycoor = -ym/2 + 6. - par[1]; |
184 | gMC->Gsvolu("FPE1", "BOX ", idtmed[503], par, 3); // Hony |
185 | gMC->Gspos("FPE1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY"); |
186 | gMC->Gsvolu("FPE2", "BOX ", idtmed[503], par, 3); // Hony |
187 | gMC->Gspos("FPE2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY"); |
188 | gMC->Gsvolu("FPE3", "BOX ", idtmed[503], par, 3); // Hony |
189 | gMC->Gspos("FPE3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY"); |
190 | // Electronics (Cu) after |
191 | par[0] = -1; |
192 | par[1] = 1.43*0.05 / 2.; // 5% of X0 |
193 | par[2] = -1; |
194 | ycoor = -ym/2 + 6.+par[1]; |
195 | gMC->Gsvolu("FEC1", "BOX ", idtmed[501], par, 3); // Cu |
196 | gMC->Gspos("FEC1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY"); |
197 | gMC->Gsvolu("FEC2", "BOX ", idtmed[501], par, 3); // Cu |
198 | gMC->Gspos("FEC2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY"); |
199 | gMC->Gsvolu("FEC3", "BOX ", idtmed[501], par, 3); // Cu |
200 | gMC->Gspos("FEC3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY"); |
201 | // Cooling water after |
202 | ycoor = ycoor+par[1]; |
203 | par[0] = -1; |
204 | par[1] = 36.1*0.02 / 2.; // 2% of X0 |
205 | par[2] = -1; |
206 | ycoor = ycoor+par[1]; |
207 | gMC->Gsvolu("FWA1", "BOX ", idtmed[515], par, 3); // Water |
208 | gMC->Gspos("FWA1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY"); |
209 | gMC->Gsvolu("FWA2", "BOX ", idtmed[515], par, 3); // Water |
210 | gMC->Gspos("FWA2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY"); |
211 | gMC->Gsvolu("FWA3", "BOX ", idtmed[515], par, 3); // Water |
212 | gMC->Gspos("FWA3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY"); |
213 | //back plate honycomb (2cm) |
214 | par[0] = -1; |
215 | par[1] = 2 / 2.; |
216 | par[2] = -1; |
217 | ycoor = ym/2 - par[1]; |
218 | gMC->Gsvolu("FEG1", "BOX ", idtmed[503], par, 3); // Hony |
219 | gMC->Gspos("FEG1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY"); |
220 | gMC->Gsvolu("FEG2", "BOX ", idtmed[503], par, 3); // Hony |
221 | gMC->Gspos("FEG2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY"); |
222 | gMC->Gsvolu("FEG3", "BOX ", idtmed[503], par, 3); // Hony |
223 | gMC->Gspos("FEG3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY"); |
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224 | } |
225 | |
226 | //_____________________________________________________________________________ |
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227 | void AliTOFv3::DrawModule() |
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228 | { |
229 | // |
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230 | // Draw a shaded view of the Time Of Flight version 0 |
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231 | // |
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232 | // Set everything unseen |
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233 | gMC->Gsatt("*", "seen", -1); |
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234 | // |
235 | // Set ALIC mother transparent |
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236 | gMC->Gsatt("ALIC","SEEN",0); |
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237 | // |
238 | // Set the volumes visible |
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239 | gMC->Gsatt("ALIC","SEEN",0); |
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240 | gMC->Gsatt("FBAR","SEEN",1); |
241 | gMC->Gsatt("FTO1","SEEN",1); |
242 | gMC->Gsatt("FTO2","SEEN",1); |
243 | gMC->Gsatt("FTO3","SEEN",1); |
244 | gMC->Gsatt("FBT1","SEEN",1); |
245 | gMC->Gsatt("FBT2","SEEN",1); |
246 | gMC->Gsatt("FBT3","SEEN",1); |
247 | gMC->Gsatt("FDT1","SEEN",1); |
248 | gMC->Gsatt("FDT2","SEEN",1); |
249 | gMC->Gsatt("FDT3","SEEN",1); |
250 | gMC->Gsatt("FLT1","SEEN",1); |
251 | gMC->Gsatt("FLT2","SEEN",1); |
252 | gMC->Gsatt("FLT3","SEEN",1); |
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253 | // |
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254 | gMC->Gdopt("hide", "on"); |
255 | gMC->Gdopt("shad", "on"); |
256 | gMC->Gsatt("*", "fill", 7); |
257 | gMC->SetClipBox("."); |
258 | gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000); |
259 | gMC->DefaultRange(); |
260 | gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .02, .02); |
261 | gMC->Gdhead(1111, "Time Of Flight"); |
262 | gMC->Gdman(18, 4, "MAN"); |
263 | gMC->Gdopt("hide","off"); |
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264 | } |
265 | |
266 | //_____________________________________________________________________________ |
267 | void AliTOFv3::CreateMaterials() |
268 | { |
269 | // |
270 | // Define materials for the Time Of Flight |
271 | // |
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272 | AliTOF::CreateMaterials(); |
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273 | } |
274 | |
275 | //_____________________________________________________________________________ |
276 | void AliTOFv3::Init() |
277 | { |
278 | // |
279 | // Initialise the detector after the geometry has been defined |
280 | // |
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281 | AliTOF::Init(); |
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282 | fIdFTO2=gMC->VolId("FTO2"); |
283 | fIdFTO3=gMC->VolId("FTO3"); |
284 | fIdFLT1=gMC->VolId("FLT1"); |
285 | fIdFLT2=gMC->VolId("FLT2"); |
286 | fIdFLT3=gMC->VolId("FLT3"); |
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287 | } |
288 | |
289 | //_____________________________________________________________________________ |
290 | void AliTOFv3::StepManager() |
291 | { |
292 | // |
293 | // Procedure called at each step in the Time Of Flight |
294 | // |
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295 | TLorentzVector mom, pos; |
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296 | Float_t hits[8]; |
297 | Int_t vol[3]; |
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298 | Int_t copy, id, i; |
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299 | Int_t *idtmed = fIdtmed->GetArray()-499; |
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300 | if(gMC->GetMedium()==idtmed[514-1] && |
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301 | gMC->IsTrackEntering() && gMC->TrackCharge() |
302 | && gMC->CurrentVolID(copy)==fIdSens) { |
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303 | TClonesArray &lhits = *fHits; |
304 | // |
305 | // Record only charged tracks at entrance |
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306 | gMC->CurrentVolOffID(1,copy); |
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307 | vol[2]=copy; |
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308 | gMC->CurrentVolOffID(3,copy); |
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309 | vol[1]=copy; |
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310 | id=gMC->CurrentVolOffID(8,copy); |
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311 | vol[0]=copy; |
312 | if(id==fIdFTO3) { |
313 | vol[0]+=22; |
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314 | id=gMC->CurrentVolOffID(5,copy); |
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315 | if(id==fIdFLT3) vol[1]+=6; |
316 | } else if (id==fIdFTO2) { |
317 | vol[0]+=20; |
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318 | id=gMC->CurrentVolOffID(5,copy); |
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319 | if(id==fIdFLT2) vol[1]+=8; |
320 | } else { |
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321 | id=gMC->CurrentVolOffID(5,copy); |
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322 | if(id==fIdFLT1) vol[1]+=14; |
323 | } |
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324 | gMC->TrackPosition(pos); |
325 | gMC->TrackMomentum(mom); |
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326 | // |
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327 | Double_t ptot=mom.Rho(); |
328 | Double_t norm=1/ptot; |
329 | for(i=0;i<3;++i) { |
330 | hits[i]=pos[i]; |
331 | hits[i+3]=mom[i]*norm; |
332 | } |
333 | hits[6]=ptot; |
334 | hits[7]=pos[3]; |
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335 | new(lhits[fNhits++]) AliTOFhit(fIshunt,gAlice->CurrentTrack(),vol,hits); |
336 | } |
337 | } |