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dc7ca31d | 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 | /* $Id$ */ | |
17 | ||
18 | ///////////////////////////////////////////////////////////////////// | |
19 | // // | |
20 | // T0 ( T-zero) detector version 0 // | |
21 | // | |
22 | //Begin Html | |
23 | /* | |
24 | <img src="gif/AliT0v2Class.gif"> | |
25 | */ | |
26 | //End Html | |
27 | // // | |
28 | // // | |
29 | ////////////////////////////////////////////////////////////////////// | |
30 | ||
31 | #define RIGHT_ARRAY 1 | |
32 | #define LEFT_ARRAY 2 | |
33 | ||
34 | #include <Riostream.h> | |
35 | #include <stdlib.h> | |
36 | ||
dc7ca31d | 37 | #include <TLorentzVector.h> |
38 | #include <TMath.h> | |
dc7ca31d | 39 | #include <TVirtualMC.h> |
40 | ||
41 | #include "AliMagF.h" | |
42 | #include "AliRun.h" | |
43 | #include "AliT0hit.h" | |
44 | #include "AliT0v2.h" | |
45 | #include "AliMC.h" | |
dc7ca31d | 46 | |
47 | ClassImp(AliT0v2) | |
48 | ||
49 | ||
50 | ////////////////////////////////////////////////////////////////////// | |
51 | // Standart constructor for T0 Detector version 2 | |
52 | ////////////////////////////////////////////////////////////////////// | |
53 | AliT0v2::AliT0v2(const char *name, const char *title): | |
54 | AliT0(name,title) | |
55 | { | |
56 | fIdSens1 = 0; | |
57 | // setBufferSize(128000); | |
58 | } | |
59 | ||
60 | ||
61 | ////////////////////////////////////////////////////////////////////// | |
62 | // Create the geometry of T0 Detector version 2 | |
63 | ////////////////////////////////////////////////////////////////////// | |
64 | void AliT0v2::CreateGeometry() | |
65 | { | |
66 | /* | |
67 | <img src="gif/AliT0v2.gif"> | |
68 | */ | |
69 | ||
70 | Int_t *idtmed; | |
71 | Int_t idrotm[999]; | |
72 | Int_t i, j; | |
73 | Float_t x, y, z; | |
74 | Float_t zRight; | |
75 | Float_t zLeft; | |
76 | Float_t phi[3]; | |
77 | Float_t theta; | |
78 | Double_t angel; | |
79 | ||
80 | Float_t pstart[3] = {4.5, 10.7, 5.3}; | |
81 | Float_t pinstart[3] = {0., 1.31, 5.25}; | |
82 | Float_t ppmt[3] = {0., 1.31, 3.5}; | |
83 | Float_t ptop[3] = {0., 1.3, 1.5}; | |
84 | // Float_t preg[3] = {0., 1.3, 0.005}; | |
85 | Float_t preg[3] = {0., 0.875, 0.005}; | |
86 | Float_t pdes[3] = {0.875, 1.3, 0.005}; | |
87 | ||
88 | ||
89 | zRight = 75.; | |
90 | zLeft = 350.; | |
91 | theta = (180 / TMath::Pi()) * TMath::ATan(6.5 / zRight); | |
92 | angel = 2 * TMath::Pi() / 12; | |
93 | idtmed = fIdtmed->GetArray(); | |
94 | ||
95 | ||
96 | AliMatrix (idrotm[901], 90., 0., 90., 90., 180., 0.); | |
97 | ||
2942f542 | 98 | TVirtualMC::GetMC()->Gsvolu ("0RST", "TUBE", idtmed[3], pstart, 3); |
99 | TVirtualMC::GetMC()->Gsvolu ("0LST", "TUBE", idtmed[3], pstart, 3); | |
100 | TVirtualMC::GetMC()->Gspos ("0RST", 1, "ALIC", 0., 0., -zRight, 0, "ONLY"); | |
101 | TVirtualMC::GetMC()->Gspos ("0LST", 1, "ALIC", 0., 0., zLeft, idrotm[901], "ONLY"); | |
dc7ca31d | 102 | |
103 | // 12 unit: PMT + divider | |
2942f542 | 104 | TVirtualMC::GetMC()->Gsvolu("0INS", "TUBE", idtmed[3], pinstart, 3); |
dc7ca31d | 105 | z = 0; |
106 | for (i = 0; i < 12; i++) | |
107 | { | |
108 | x = 6.5 * TMath::Sin(i * angel); | |
109 | y = 6.5 * TMath::Cos(i * angel); | |
110 | ||
111 | phi[0] = -30 * i; | |
112 | phi[1] = 90 - i * 30; | |
113 | phi[2] = 90 - i * 30; | |
114 | for (j = 0; j < 3; j++) | |
115 | if (phi[j] < 0) phi[j] += 360; | |
116 | ||
117 | AliMatrix (idrotm[902 + i], 90., phi[0], | |
118 | 90. + theta, phi[1], | |
119 | theta, phi[2]); | |
120 | ||
2942f542 | 121 | TVirtualMC::GetMC()->Gspos ("0INS", i + 1, "0RST", x, y, z, idrotm[902 + i], "ONLY"); |
122 | TVirtualMC::GetMC()->Gspos ("0INS", i + 13, "0LST", x, y, z, 0, "ONLY"); | |
dc7ca31d | 123 | } |
124 | ||
2942f542 | 125 | TVirtualMC::GetMC()->Gsvolu ("0PMT", "TUBE", idtmed[1], ppmt, 3); |
dc7ca31d | 126 | x = y = 0; |
127 | z = -pinstart[2] + ppmt[2]; | |
2942f542 | 128 | TVirtualMC::GetMC()->Gspos ("0PMT", 1, "0INS", x, y, z, 0, "ONLY"); |
dc7ca31d | 129 | |
130 | // PMT | |
131 | // Entry window (glass) | |
2942f542 | 132 | TVirtualMC::GetMC()->Gsvolu ("0TOP", "TUBE", idtmed[6], ptop, 3); |
dc7ca31d | 133 | z = -ppmt[2] + ptop[2]; |
2942f542 | 134 | TVirtualMC::GetMC()->Gspos ("0TOP", 1, "0PMT", 0, 0, z, 0, "ONLY"); |
dc7ca31d | 135 | |
2942f542 | 136 | TVirtualMC::GetMC()->Gsvolu ("0REG", "TUBE", idtmed[6], preg, 3); |
dc7ca31d | 137 | z = -ppmt[2] + 2 * ptop[2] + preg[2]; |
2942f542 | 138 | TVirtualMC::GetMC()->Gspos ("0REG", 1, "0PMT", 0, 0, z, 0, "ONLY"); |
dc7ca31d | 139 | |
2942f542 | 140 | TVirtualMC::GetMC()->Gsvolu ("0DES", "TUBE", idtmed[6], pdes, 3); |
dc7ca31d | 141 | z = -ppmt[2] + 2 * ptop[2] + preg[2]; |
2942f542 | 142 | TVirtualMC::GetMC()->Gspos ("0DES", 1, "0PMT", 0, 0, z, 0, "ONLY"); |
dc7ca31d | 143 | } |
144 | ||
145 | ||
146 | ////////////////////////////////////////////////////////////////////// | |
147 | // Definition of avaible T0 materials | |
148 | ////////////////////////////////////////////////////////////////////// | |
149 | void AliT0v2::CreateMaterials() | |
150 | { | |
f7a1cc68 | 151 | Int_t isxfld = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Integ(); |
152 | Float_t sxmgmx = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max(); | |
dc7ca31d | 153 | |
f35a7b6f | 154 | Double_t a, z, d, radl, absl; |
155 | TArrayT par; | |
156 | ||
dc7ca31d | 157 | |
158 | // Scintillator CH | |
159 | Float_t ascin[2] = {1.01, 12.01}; | |
160 | Float_t zscin[2] = {1., 6.}; | |
161 | Float_t wscin[2] = {1., 1.}; | |
162 | Float_t denscin = 1.03; | |
163 | ||
164 | // PMT glass SiO2 | |
165 | Float_t aglass[2] = {28.0855, 15.9994}; | |
166 | Float_t zglass[2] = {14., 8.}; | |
167 | Float_t wglass[2] = { 1., 2.}; | |
168 | Float_t dglass = 2.65; | |
169 | ||
170 | // Ceramic 97.2% Al2O3 , 2.8% SiO2 | |
171 | Float_t acer[2], zcer[2]; | |
172 | Float_t wcer[2] = { 0.972, 0.028}; | |
173 | Float_t aal2o3[2] = {26.981539, 15.9994 }; | |
174 | Float_t zal2o3[2] = {13., 8.}; | |
175 | Float_t wal2o3[2] = { 2., 3.}; | |
176 | Float_t denscer = 3.6; | |
177 | ||
178 | // Brass 80% Cu, 20% Zn | |
179 | Float_t abrass[2] = {63.546, 65.39}; | |
180 | Float_t zbrass[2] = {29., 30.}; | |
181 | Float_t wbrass[2] = { 0.8, 0.2}; | |
182 | Float_t denbrass = 8.96; | |
183 | ||
184 | //Ribber C6H12S | |
185 | Float_t aribber[3] = {12., 1., 32.}; | |
186 | Float_t zribber[3] = { 6., 1., 16.}; | |
187 | Float_t wribber[3] = { 6., 12., 1.}; | |
188 | Float_t denribber = 0.8; | |
189 | ||
dc7ca31d | 190 | |
191 | AliMaterial (0, "T0 Steel$", 55.850, 26., 7.87, 1.76, 999); | |
192 | AliMaterial (1, "T0 Vacuum$", 1.e-16, 1.e-16, 1.e-16, 1.e16, 999); | |
193 | AliMaterial (2, "T0 Air$", 14.61, 7.3, .001205, 30423., 999); | |
194 | ||
195 | AliMixture (3, "Al2O3 $", aal2o3, zal2o3, denscer, -2, wal2o3); | |
196 | AliMixture (4, "PMT glass $", aglass, zglass, dglass, -2, wglass); | |
f35a7b6f | 197 | TString namate; |
2942f542 | 198 | TVirtualMC::GetMC()->GetMaterial((*fIdmate)[3], namate, a, z, d, radl, absl, par); |
dc7ca31d | 199 | acer[0] = a; |
200 | zcer[0] = z; | |
2942f542 | 201 | TVirtualMC::GetMC()->GetMaterial((*fIdmate)[4], namate, a, z, d, radl, absl, par); |
dc7ca31d | 202 | acer[1] = a; |
203 | zcer[1] = z; | |
204 | ||
205 | AliMixture (5, "Scintillator$",ascin,zscin,denscin,-2,wscin); | |
206 | AliMixture (6, "Brass $", abrass, zbrass, denbrass, 2, wbrass); | |
207 | AliMixture (7, "Ribber $",aribber,zribber,denribber,-3,wribber); | |
208 | AliMixture (9, "Ceramic $", acer, zcer, denscer, 2, wcer); | |
209 | ||
210 | AliMedium (1, "T0 Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003); | |
211 | AliMedium (2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003); | |
212 | AliMedium (3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003); | |
213 | AliMedium (4, "Ceramic$", 9, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003); | |
214 | AliMedium (6, "Glass$", 4, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003); | |
215 | AliMedium (8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001); | |
216 | AliMedium (9, "Ribber $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003); | |
217 | AliMedium(11, "Brass $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003); | |
dc7ca31d | 218 | } |
219 | ||
220 | ||
dc7ca31d | 221 | |
dc7ca31d | 222 | ////////////////////////////////////////////////////////////////////// |
661663fa | 223 | // Definition of optical properties for the Forward Multiplicity Detector |
dc7ca31d | 224 | ////////////////////////////////////////////////////////////////////// |
661663fa | 225 | void AliT0v2::DefineOpticalProperties() |
dc7ca31d | 226 | { |
661663fa | 227 | // Optical properties definition. |
7235aed2 | 228 | // Definition Cherenkov parameters |
229 | const Int_t NUMENTRIES = 32; | |
230 | ||
231 | Float_t ppckov[NUMENTRIES] = | |
232 | { 2.034E-9, 2.068E-9, 2.103E-9, 2.139E-9, | |
233 | 2.177E-9, 2.216E-9, 2.256E-9, 2.298E-9, | |
234 | 2.341E-9, 2.386E-9, 2.433E-9, 2.481E-9, | |
235 | 2.532E-9, 2.585E-9, 2.640E-9, 2.697E-9, | |
236 | 2.757E-9, 2.820E-9, 2.885E-9, 2.954E-9, | |
237 | 3.026E-9, 3.102E-9, 3.181E-9, 3.265E-9, | |
238 | 3.353E-9, 3.446E-9, 3.545E-9, 3.649E-9, | |
239 | 3.760E-9, 3.877E-9, 4.002E-9, 4.136E-9 }; | |
240 | ||
241 | Float_t rindex_qwarz[NUMENTRIES] = | |
242 | { 1.458, 1.458, 1.458, 1.458, 1.458, 1.458, 1.458, | |
243 | 1.458, 1.458, 1.458, 1.458, 1.458, 1.458, 1.458, | |
244 | 1.458, 1.458, 1.458, 1.458, 1.458, 1.458, 1.458, | |
245 | 1.458, 1.458, 1.458, 1.458, 1.458, 1.458, 1.458, | |
246 | 1.458, 1.458, 1.458, 1.458 }; | |
247 | ||
248 | Float_t rindex_air[NUMENTRIES] = | |
249 | { 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., | |
250 | 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., | |
251 | 1., 1., 1., 1. }; | |
252 | ||
253 | Float_t effic_all[NUMENTRIES] = | |
254 | { 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., | |
255 | 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., | |
256 | 1., 1., 1., 1. }; | |
257 | ||
258 | Float_t absor_qwarz[NUMENTRIES] = | |
259 | { 2000., 2000., 2000., 2000., 2000., 2000., 2000., | |
260 | 2000., 2000., 2000., 2000., 2000., 2000., 2000., | |
261 | 2000., 2000., 2000., 2000., 2000., 2000., 2000., | |
262 | 2000., 2000., 2000., 2000., 2000., 2000., 2000., | |
263 | 2000., 2000., 2000., 2000. }; | |
264 | ||
265 | Float_t absor_air[NUMENTRIES] = | |
266 | { 200., 200., 200., 200., 200., 200., 200., | |
267 | 200., 200., 200., 200., 200., 200., 200., | |
268 | 200., 200., 200., 200., 200., 200., 200., | |
269 | 200., 200., 200., 200., 200., 200., 200., | |
270 | 200., 200., 200., 200. }; | |
271 | ||
272 | Int_t *idtmed = fIdtmed->GetArray(); | |
273 | ||
2942f542 | 274 | TVirtualMC::GetMC()->SetCerenkov (idtmed[6], NUMENTRIES, ppckov, absor_qwarz, effic_all, rindex_qwarz); |
275 | TVirtualMC::GetMC()->SetCerenkov (idtmed[1], NUMENTRIES, ppckov, absor_air, effic_all, rindex_air); | |
661663fa | 276 | } |
dc7ca31d | 277 | |
661663fa | 278 | ////////////////////////////////////////////////////////////////////// |
279 | // Initialises version 2 of the Forward Multiplicity Detector | |
280 | ////////////////////////////////////////////////////////////////////// | |
281 | void AliT0v2::Init() | |
282 | { | |
283 | AliT0::Init(); | |
2942f542 | 284 | fIdSens1 = TVirtualMC::GetMC()->VolId ("0REG"); |
dc7ca31d | 285 | printf ("*** T0 version 2 initialized ***\n"); |
286 | } | |
287 | ||
288 | ||
289 | ////////////////////////////////////////////////////////////////////// | |
290 | // Called for every step in the T0 Detector | |
291 | ////////////////////////////////////////////////////////////////////// | |
292 | void AliT0v2::StepManager() | |
293 | { | |
294 | Int_t id; | |
295 | Int_t copy; | |
296 | // Int_t copy1; | |
297 | Float_t xyz[3]; | |
298 | Float_t XYZ[3]; | |
299 | Float_t hitPhoton[6]; | |
300 | static Float_t hits[7]; | |
301 | static Float_t edep; | |
302 | static Int_t vol[2]; | |
303 | TLorentzVector pos; | |
304 | TLorentzVector mom; | |
305 | ||
306 | ||
2942f542 | 307 | if(!TVirtualMC::GetMC()->IsTrackAlive()) return; // particle has disappeared |
dc7ca31d | 308 | |
2942f542 | 309 | // TGeant3 *g3 = (TGeant3*) TVirtualMC::GetMC(); |
dc7ca31d | 310 | // g3->Gpcxyz(); |
311 | ||
312 | TClonesArray &lhits = *fHits; | |
313 | ||
314 | ||
315 | /////////////////////////////////////////////// | |
316 | // If particles is photon then ... | |
317 | ||
2942f542 | 318 | if (TVirtualMC::GetMC()->TrackPid() == 50000050) |
dc7ca31d | 319 | { |
2942f542 | 320 | id = TVirtualMC::GetMC()->CurrentVolID(copy); |
dc7ca31d | 321 | |
322 | // Check the sensetive volume | |
323 | if (id == fIdSens1) | |
324 | { | |
2942f542 | 325 | if (TVirtualMC::GetMC()->IsTrackEntering()) |
dc7ca31d | 326 | { |
2942f542 | 327 | TVirtualMC::GetMC()->CurrentVolOffID(2,copy); |
dc7ca31d | 328 | if (copy < 13) |
329 | { | |
330 | vol[0] = RIGHT_ARRAY; | |
331 | vol[1] = copy; | |
332 | } | |
333 | else | |
334 | { | |
335 | vol[0] = LEFT_ARRAY; | |
336 | vol[1] = copy - 12; | |
337 | } | |
338 | ||
2942f542 | 339 | TVirtualMC::GetMC()->TrackPosition(pos); |
340 | TVirtualMC::GetMC()->TrackMomentum(mom); | |
dc7ca31d | 341 | XYZ[0] = pos[0]; |
342 | XYZ[1] = pos[1]; | |
343 | XYZ[2] = pos[2]; | |
2942f542 | 344 | TVirtualMC::GetMC()->Gmtod (XYZ, xyz, 1); |
dc7ca31d | 345 | |
346 | hitPhoton[0] = sqrt (xyz[0] * xyz[0] + xyz[1] * xyz[1]); | |
347 | hitPhoton[1] = mom[0]; | |
348 | hitPhoton[2] = mom[1]; | |
349 | hitPhoton[3] = mom[2]; | |
2942f542 | 350 | hitPhoton[4] = 1e9 * TVirtualMC::GetMC()->TrackTime(); |
351 | hitPhoton[5] = 1e9 * TVirtualMC::GetMC()->Etot(); | |
dc7ca31d | 352 | |
353 | AddHitPhoton (gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hitPhoton); | |
354 | } | |
2942f542 | 355 | TVirtualMC::GetMC()->StopTrack(); |
dc7ca31d | 356 | } |
357 | else | |
2942f542 | 358 | if (id == TVirtualMC::GetMC()->VolId ("0DES")) TVirtualMC::GetMC()->StopTrack(); |
dc7ca31d | 359 | } |
360 | ||
361 | // end photon particalary | |
362 | /////////////////////////////////////////////// | |
363 | ||
364 | ||
365 | /////////////////////////////////////////////// | |
366 | // If particles is charge then ... | |
367 | ||
2942f542 | 368 | // Float_t charge = TVirtualMC::GetMC()->TrackCharge(); |
dc7ca31d | 369 | // if(TMath::Abs(charge) <= 0.) return; |
2942f542 | 370 | id = TVirtualMC::GetMC()->CurrentVolID(copy); |
dc7ca31d | 371 | |
372 | ||
2942f542 | 373 | // printf("TVirtualMC::GetMC()->ckine->ipart %d",TVirtualMC::GetMC()->ckine->ipart); |
dc7ca31d | 374 | // Check the sensetive volume |
2942f542 | 375 | if(id==TVirtualMC::GetMC()->VolId("0TOP") ) { |
376 | if(TVirtualMC::GetMC()->IsTrackEntering()) { | |
377 | TVirtualMC::GetMC()->CurrentVolOffID(2,copy); | |
dc7ca31d | 378 | if (copy < 13) |
379 | { | |
380 | vol[0] = RIGHT_ARRAY; | |
381 | vol[1] = copy; | |
382 | } | |
383 | else | |
384 | { | |
385 | vol[0] = LEFT_ARRAY; | |
386 | vol[1] = copy - 12; | |
387 | } | |
388 | ||
2942f542 | 389 | TVirtualMC::GetMC()->TrackPosition(pos); |
dc7ca31d | 390 | hits[0] = pos[0]; |
391 | hits[1] = pos[1]; | |
392 | hits[2] = pos[2]; | |
2942f542 | 393 | Float_t etot = TVirtualMC::GetMC()->Etot(); |
dc7ca31d | 394 | hits[4] = etot; |
2942f542 | 395 | Int_t part = TVirtualMC::GetMC()->TrackPid(); |
dc7ca31d | 396 | hits[5] = part; |
2942f542 | 397 | Float_t ttime = TVirtualMC::GetMC()->TrackTime(); |
dc7ca31d | 398 | hits[6] = ttime*1e9; |
399 | edep = 0; | |
400 | } | |
2942f542 | 401 | if(TVirtualMC::GetMC()->IsTrackInside()) { |
402 | Float_t de = TVirtualMC::GetMC()->Edep(); | |
dc7ca31d | 403 | edep = edep + de; |
404 | // printf ("E deposition %f\n",edep); | |
405 | // for (i=0; i<=6; i++){ | |
406 | // printf(" HITS on T0 inside %f\n",hits[i]); } | |
407 | } | |
2942f542 | 408 | if(TVirtualMC::GetMC()->IsTrackExiting()) { |
409 | Float_t de = TVirtualMC::GetMC()->Edep(); | |
dc7ca31d | 410 | edep = edep + de; |
411 | hits[3] = edep * 1e3; | |
412 | ||
413 | // for (i=0; i<=6; i++){ | |
414 | // printf(" HITS on T0 Exit %f\n",hits[i]); } | |
415 | //for (i=0; i<=1; i++) { printf("T0 vol %d\n",vol[i]);} | |
416 | ||
417 | new(lhits[fNhits++]) AliT0hit(fIshunt,gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,hits); | |
418 | } | |
419 | } | |
420 | ||
421 | // end charge particles particalary | |
422 | /////////////////////////////////////////////// | |
423 | ||
424 | } |