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937fe4a4 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$Log$
826b71ec 18Revision 1.3 1999/11/01 20:41:58 fca
19Added protections against using the wrong version of FRAME
20
ab76897d 21Revision 1.2 1999/10/16 19:21:57 fca
22Corrected Rotation Matrix and CVS logAliTOFv4.cxx
23
f5b1a2eb 24Revision 1.1 1999/10/15 15:35:20 fca
25New version for frame1099 with and without holes
937fe4a4 26
27*/
28
29///////////////////////////////////////////////////////////////////////////////
30// //
31// Time Of Flight: design of C.Williams FCA //
32// This class contains the functions for version 1 of the Time Of Flight //
33// detector. //
34//
35// VERSION WITH 5 MODULES AND FLAT PLATES
36//
37// WITH HOLES FOR PHOS AND HMPID
38// INSIDE A FULL COVERAGE SPACE FRAME
39//
40//
41// Authors:
42//
43// Alessio Seganti
44// Domenico Vicinanza
45//
46// University of Salerno - Italy
47//
48//
49//Begin_Html
50/*
51<img src="picts/AliTOFv5Class.gif">
52*/
53//End_Html
54// //
55///////////////////////////////////////////////////////////////////////////////
56
826b71ec 57#include <iostream.h>
ab76897d 58#include <stdlib.h>
59
937fe4a4 60#include "AliTOFv5.h"
61#include "AliRun.h"
62#include "AliConst.h"
63
64ClassImp(AliTOFv5)
65
66//_____________________________________________________________________________
67AliTOFv5::AliTOFv5()
68{
69 //
70 // Default constructor
71 //
72}
73
74//_____________________________________________________________________________
75AliTOFv5::AliTOFv5(const char *name, const char *title)
76 : AliTOF(name,title)
77{
78 //
79 // Standard constructor
80 //
81}
82
83//_____________________________________________________________________________
84void AliTOFv5::CreateGeometry()
85{
86 //
87 // Create geometry for Time Of Flight version 0
88 //
89 //Begin_Html
90 /*
91 <img src="picts/AliTOFv5.gif">
92 */
93 //End_Html
94 //
95 // Creates common geometry
96 //
97 AliTOF::CreateGeometry();
98}
99
100//_____________________________________________________________________________
101void AliTOFv5::TOFpc(Float_t xtof, Float_t ytof, Float_t zlen1,
102 Float_t zlen2, Float_t zlen3, Float_t ztof0)
103{
104 //
105 // Definition of the Time Of Fligh Resistive Plate Chambers
106 // xFLT, yFLT, zFLT - sizes of TOF modules (large)
107
108 Float_t ycoor;
109 Float_t par[10];
110 Int_t idrotm[100];
111
112 Float_t yFREON, xp, yp, zp;
113
114 Int_t *idtmed = fIdtmed->GetArray()-499;
115
116
117 par[0] = xtof / 2.;
118 par[1] = ytof / 2.;
119 par[2] = zlen1 / 2.;
120 gMC->Gsvolu("FTO1", "BOX ", idtmed[506], par, 3);
121 par[2] = zlen2 / 2.;
122 gMC->Gsvolu("FTO2", "BOX ", idtmed[506], par, 3);
123 par[2] = zlen3 / 2.;
124 gMC->Gsvolu("FTO3", "BOX ", idtmed[506], par, 3);
125
126
127// Position of modules
128 Float_t zcor1 = ztof0 - zlen1/2;
129 Float_t zcor2 = ztof0 - zlen1 - zlen2/2.;
130 Float_t zcor3 = 0.;
131
132 AliMatrix(idrotm[0], 90., 0., 0., 0., 90, -90.);
133 AliMatrix(idrotm[1], 90., 180., 0., 0., 90, 90.);
134 gMC->Gspos("FTO1", 1, "BTO1", 0, zcor1, 0, idrotm[0], "ONLY");
135 gMC->Gspos("FTO1", 2, "BTO1", 0, -zcor1, 0, idrotm[1], "ONLY");
136 gMC->Gspos("FTO1", 1, "BTO2", 0, zcor1, 0, idrotm[0], "ONLY");
137 gMC->Gspos("FTO1", 2, "BTO2", 0, -zcor1, 0, idrotm[1], "ONLY");
138 gMC->Gspos("FTO1", 1, "BTO3", 0, zcor1, 0, idrotm[0], "ONLY");
139 gMC->Gspos("FTO1", 2, "BTO3", 0, -zcor1, 0, idrotm[1], "ONLY");
140
141 gMC->Gspos("FTO2", 1, "BTO1", 0, zcor2, 0, idrotm[0], "ONLY");
142 gMC->Gspos("FTO2", 2, "BTO1", 0, -zcor2, 0, idrotm[1], "ONLY");
143 gMC->Gspos("FTO2", 1, "BTO2", 0, zcor2, 0, idrotm[0], "ONLY");
144 gMC->Gspos("FTO2", 2, "BTO2", 0, -zcor2, 0, idrotm[1], "ONLY");
145
146 gMC->Gspos("FTO3", 0, "BTO1", 0, zcor3, 0, idrotm[0], "ONLY");
147
148// Subtraction the distance to TOF module boundaries
149
150 Float_t db = 7.;
151 Float_t xFLT, yFLT, zFLT1, zFLT2, zFLT3;
152
153
154 xFLT = xtof -(.5 +.5)*2;
155 yFLT = ytof;
156 zFLT1 = zlen1 - db;
157 zFLT2 = zlen2 - db;
158 zFLT3 = zlen3 - db;
159
160
161// fron gaps in MRPC chamber
162 yFREON = .11; //cm
163
164// Sizes of MRPC pads
165
166 xp = 3.0;
167 yp = 12.3*0.05; // 5% X0 of glass
168 zp = 3.0;
169
170// Subtraction of dead boundaries in X=2 cm and Z=7/2 cm
171
172cout <<"************************* TOF geometry **************************"<<endl;
173
174 Int_t nz1, nz2, nz3, nx; //- numbers of pixels
175 nx = Int_t (xFLT/xp);
176
177 printf("Number of pixel along x axis = %i",nx);
178
179 par[0] = xFLT/2;
180 par[1] = yFLT/2;
181 par[2] = (zFLT1 / 2.);
182 nz1 = Int_t (par[2]*2/zp);
183 gMC->Gsvolu("FLT1", "BOX ", idtmed[506], par, 3); // CO2
184 gMC->Gspos("FLT1", 0, "FTO1", 0., 0., 0., 0, "ONLY");
185 printf("Number of pixel along z axis (module 1) = %i",nz1);
186
187 par[2] = (zFLT2 / 2.);
188 nz2 = Int_t (par[2]*2/zp);
189 gMC->Gsvolu("FLT2", "BOX ", idtmed[506], par, 3); // CO2
190 gMC->Gspos("FLT2", 0, "FTO2", 0., 0., 0., 0, "ONLY");
191 printf("Number of pixel along z axis (module 2) = %i",nz2);
192
193 par[2] = (zFLT3 / 2.);
194 nz3 = Int_t (par[2]*2/zp);
195 gMC->Gsvolu("FLT3", "BOX ", idtmed[506], par, 3); // CO2
196 gMC->Gspos("FLT3", 0, "FTO3", 0., 0., 0., 0, "ONLY");
197 printf("Number of pixel along z axis (module 3) = %i",nz3);
198
199////////// Layers before detector ////////////////////
200
201// Alluminium layer in front 1.0 mm thick at the beginning
202 par[0] = -1;
203 par[1] = 0.1;
204 par[2] = -1;
205 ycoor = -yFLT/2 + par[1];
206 gMC->Gsvolu("FMY1", "BOX ", idtmed[508], par, 3); // Alluminium
207 gMC->Gspos("FMY1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
208 gMC->Gsvolu("FMY2", "BOX ", idtmed[508], par, 3); // Alluminium
209 gMC->Gspos("FMY2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
210 gMC->Gsvolu("FMY3", "BOX ", idtmed[508], par, 3); // Alluminium
211 gMC->Gspos("FMY3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
212
213// Honeycomb layer (1cm of special polyethilene)
214 ycoor = ycoor + par[1];
215 par[0] = -1;
216 par[1] = 1. / 2;
217 par[2] = -1;
218 ycoor = ycoor + par[1];
219 gMC->Gsvolu("FPL1", "BOX ", idtmed[503], par, 3); // Hony
220 gMC->Gspos("FPL1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
221 gMC->Gsvolu("FPL2", "BOX ", idtmed[503], par, 3); // Hony
222 gMC->Gspos("FPL2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
223 gMC->Gsvolu("FPL3", "BOX ", idtmed[503], par, 3); // Hony
224 gMC->Gspos("FPL3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
225
226///////////////// Detector itself //////////////////////
227
228 const Float_t SpaceBefore=2.;
229
230 par[0] = -1;
231 par[1] = yp/2; // 5 %X0 thick of glass
232 par[2] = -1;
233 ycoor = -yFLT/2 + SpaceBefore;
234 gMC->Gsvolu("FLD1", "BOX ", idtmed[514], par, 3); // Glass
235 gMC->Gspos("FLD1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
236 gMC->Gsvolu("FLD2", "BOX ", idtmed[514], par, 3); // Glass
237 gMC->Gspos("FLD2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
238 gMC->Gsvolu("FLD3", "BOX ", idtmed[514], par, 3); // Glass
239 gMC->Gspos("FLD3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
240
241 gMC->Gsdvn("FLZ1", "FLD1", nz1, 3); //pixel size xp=zp=3
242 gMC->Gsdvn("FLZ2", "FLD2", nz2, 3);
243 gMC->Gsdvn("FLZ3", "FLD3", nz3, 3);
244 gMC->Gsdvn("FLX1", "FLZ1", nx, 1);
245 gMC->Gsdvn("FLX2", "FLZ2", nx, 1);
246 gMC->Gsdvn("FLX3", "FLZ3", nx, 1);
247
248// MRPC pixel itself
249 par[0] = -1;//xp/2;
250 par[1] = -1;//yp/2; // 5 %X0 thick of glass
251 par[2] = -1;//zp/2;
252 gMC->Gsvolu("FPA0", "BOX ", idtmed[514], par, 3);// Glass
253 gMC->Gspos("FPA0", 1, "FLX1", 0., 0., 0., 0, "ONLY");
254 gMC->Gspos("FPA0", 2, "FLX2", 0., 0., 0., 0, "ONLY");
255 gMC->Gspos("FPA0", 3, "FLX3", 0., 0., 0., 0, "ONLY");
256
257// Freon gas sencitive vol.ume
258 par[0] = -1;
259 par[1] = yFREON/2;
260 par[2] = -1;
261 gMC->Gsvolu("FPAD", "BOX ", idtmed[513], par, 3);// Freon
262 gMC->Gspos("FPAD", 0, "FPA0", 0., 0., 0., 0, "ONLY");
263
264////////// Layers after detector ////////////////////
265
266 const Float_t SpaceAfter=6.;
267
268// Honeycomb layer after (3cm)
269 par[0] = -1;
270 par[1] = 0.6;
271 par[2] = -1;
272 ycoor = -yFLT/2 + SpaceAfter - par[1];
273 gMC->Gsvolu("FPE1", "BOX ", idtmed[503], par, 3); // Hony
274 gMC->Gspos("FPE1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
275 gMC->Gsvolu("FPE2", "BOX ", idtmed[503], par, 3); // Hony
276 gMC->Gspos("FPE2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
277 gMC->Gsvolu("FPE3", "BOX ", idtmed[503], par, 3); // Hony
278 gMC->Gspos("FPE3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
279
280// Electronics (Cu) after
281 par[0] = -1;
282 par[1] = 1.43*0.05 / 2.; // 5% of X0
283 par[2] = -1;
284 ycoor = -yFLT/2 + SpaceAfter +par[1];
285 gMC->Gsvolu("FEC1", "BOX ", idtmed[501], par, 3); // Cu
286 gMC->Gspos("FEC1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
287 gMC->Gsvolu("FEC2", "BOX ", idtmed[501], par, 3); // Cu
288 gMC->Gspos("FEC2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
289 gMC->Gsvolu("FEC3", "BOX ", idtmed[501], par, 3); // Cu
290 gMC->Gspos("FEC3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
291
292// Cooling water after
293 ycoor = ycoor+par[1];
294 par[0] = -1;
295 par[1] = 36.1*0.02 / 2.; // 2% of X0
296 par[2] = -1;
297 ycoor = ycoor+par[1];
298 gMC->Gsvolu("FWA1", "BOX ", idtmed[515], par, 3); // Water
299 gMC->Gspos("FWA1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
300 gMC->Gsvolu("FWA2", "BOX ", idtmed[515], par, 3); // Water
301 gMC->Gspos("FWA2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
302 gMC->Gsvolu("FWA3", "BOX ", idtmed[515], par, 3); // Water
303 gMC->Gspos("FWA3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
304
305//back plate honycomb (2cm)
306 par[0] = -1;
307 par[1] = 2 / 2.;
308 par[2] = -1;
309 ycoor = yFLT/2 - par[1];
310 gMC->Gsvolu("FEG1", "BOX ", idtmed[503], par, 3); // Hony
311 gMC->Gspos("FEG1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
312 gMC->Gsvolu("FEG2", "BOX ", idtmed[503], par, 3); // Hony
313 gMC->Gspos("FEG2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
314 gMC->Gsvolu("FEG3", "BOX ", idtmed[503], par, 3); // Hony
315 gMC->Gspos("FEG3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");}
316
317//_____________________________________________________________________________
318void AliTOFv5::DrawModule()
319{
320 //
321 // Draw a shaded view of the Time Of Flight version 1
322 //
323 // Set everything unseen
324 gMC->Gsatt("*", "seen", -1);
325 //
326 // Set ALIC mother transparent
327 gMC->Gsatt("ALIC","SEEN",0);
328 //
329 // Set the volumes visible
330 gMC->Gsatt("ALIC","SEEN",0);
331 gMC->Gsatt("FBAR","SEEN",1);
332 gMC->Gsatt("FTO1","SEEN",1);
333 gMC->Gsatt("FTO2","SEEN",1);
334 gMC->Gsatt("FTO3","SEEN",1);
335 gMC->Gsatt("FBT1","SEEN",1);
336 gMC->Gsatt("FBT2","SEEN",1);
337 gMC->Gsatt("FBT3","SEEN",1);
338 gMC->Gsatt("FDT1","SEEN",1);
339 gMC->Gsatt("FDT2","SEEN",1);
340 gMC->Gsatt("FDT3","SEEN",1);
341 gMC->Gsatt("FLT1","SEEN",1);
342 gMC->Gsatt("FLT2","SEEN",1);
343 gMC->Gsatt("FLT3","SEEN",1);
344 gMC->Gsatt("FPL1","SEEN",1);
345 gMC->Gsatt("FPL2","SEEN",1);
346 gMC->Gsatt("FPL3","SEEN",1);
347 gMC->Gsatt("FLD1","SEEN",1);
348 gMC->Gsatt("FLD2","SEEN",1);
349 gMC->Gsatt("FLD3","SEEN",1);
350 gMC->Gsatt("FLZ1","SEEN",1);
351 gMC->Gsatt("FLZ2","SEEN",1);
352 gMC->Gsatt("FLZ3","SEEN",1);
353 gMC->Gsatt("FLX1","SEEN",1);
354 gMC->Gsatt("FLX2","SEEN",1);
355 gMC->Gsatt("FLX3","SEEN",1);
356 gMC->Gsatt("FPA0","SEEN",1);
357 //
358 gMC->Gdopt("hide", "on");
359 gMC->Gdopt("shad", "on");
360 gMC->Gsatt("*", "fill", 7);
361 gMC->SetClipBox(".");
362 gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
363 gMC->DefaultRange();
364 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .02, .02);
365 gMC->Gdhead(1111, "Time Of Flight");
366 gMC->Gdman(18, 4, "MAN");
367 gMC->Gdopt("hide","off");
368}
369
370//_____________________________________________________________________________
371void AliTOFv5::CreateMaterials()
372{
373 //
374 // Define materials for the Time Of Flight
375 //
376 AliTOF::CreateMaterials();
377}
378
379//_____________________________________________________________________________
380void AliTOFv5::Init()
381{
382 //
383 // Initialise the detector after the geometry has been defined
384 //
ab76897d 385 printf("**************************************"
386 " TOF "
387 "**************************************\n");
388 printf("\n Version 5 of TOF initialing, "
389 "with openings for PHOS and RICH in symmetric frame\n\n");
390
937fe4a4 391 AliTOF::Init();
ab76897d 392
393 //
394 // Check that FRAME is there otherwise we have no place where to
395 // put TOF
396 AliModule* FRAME=gAlice->GetModule("FRAME");
397 if(!FRAME) {
398 Error("Ctor","TOF needs FRAME to be present\n");
399 exit(1);
400 } else
401 if(FRAME->IsVersion()!=1) {
402 Error("Ctor","FRAME version 1 needed with this version of TOF\n");
403 exit(1);
404 }
405
937fe4a4 406 fIdFTO2=gMC->VolId("FTO2");
407 fIdFTO3=gMC->VolId("FTO3");
408 fIdFLT1=gMC->VolId("FLT1");
409 fIdFLT2=gMC->VolId("FLT2");
410 fIdFLT3=gMC->VolId("FLT3");
ab76897d 411
412 printf("**************************************"
413 " TOF "
414 "**************************************\n");
937fe4a4 415}
416
417//_____________________________________________________________________________
418void AliTOFv5::StepManager()
419{
420 //
421 // Procedure called at each step in the Time Of Flight
422 //
423 TLorentzVector mom, pos;
826b71ec 424 Float_t hits[8],rho,z,phi,phid;
425 Int_t sector, plate, pad_x, pad_z;
426 Int_t copy, pad_x_id, pad_z_id, i;
937fe4a4 427 Int_t *idtmed = fIdtmed->GetArray()-499;
428 if(gMC->GetMedium()==idtmed[514-1] &&
429 gMC->IsTrackEntering() && gMC->TrackCharge()
430 && gMC->CurrentVolID(copy)==fIdSens) {
431 TClonesArray &lhits = *fHits;
826b71ec 432
433
434 //_________getting information about hit volumes_____________
435
436 pad_z_id=gMC->CurrentVolOffID(3,copy);
437 pad_z=copy;
438
439 pad_x_id=gMC->CurrentVolOffID(2,copy);
440 pad_x=copy;
441
442 gMC->TrackPosition(pos);
443 gMC->TrackMomentum(mom);
444
445 rho = sqrt(pos[0]*pos[0]+pos[1]*pos[1]);
446 phi = TMath::ACos(pos[0]/rho);
447 Float_t as = TMath::ASin(pos[1]/rho);
448 if (as<0) phi = 2*3.141592654-phi;
449
450 z = pos[2];
451
452 if (z<=62. && z>=-62) plate = 3;
453 if (z<=216. && z>62.) plate = 4;
454 if (z>=-216. && z<-62.) plate = 2;
455 if (z>216.) plate = 5;
456 if (z<-216.) plate = 1;
457
458 phid = phi*kRaddeg;
459 sector = Int_t (phid/20.);
460 sector++;
461
937fe4a4 462 Double_t ptot=mom.Rho();
463 Double_t norm=1/ptot;
464 for(i=0;i<3;++i) {
465 hits[i]=pos[i];
466 hits[i+3]=mom[i]*norm;
467 }
468 hits[6]=ptot;
469 hits[7]=pos[3];
826b71ec 470 new(lhits[fNhits++]) AliTOFhit(fIshunt,gAlice->CurrentTrack(),sector,plate,pad_x,pad_z,hits);
937fe4a4 471 }
472}