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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 //
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 THE FULL COVERAGE SPACE FRAME
39//
40//
41// Authors:
42//
43// Alessio Seganti
44// Domenico Vicinanza
45//
46// University of Salerno - Italy
47//
48//Begin_Html
49/*
50<img src="picts/AliTOFv6Class.gif">
51*/
52//End_Html
53// //
54///////////////////////////////////////////////////////////////////////////////
55
826b71ec 56#include <iostream.h>
ab76897d 57#include <stdlib.h>
58
937fe4a4 59#include "AliTOFv6.h"
60#include "AliRun.h"
61#include "AliConst.h"
62
63ClassImp(AliTOFv6)
64
65//_____________________________________________________________________________
66AliTOFv6::AliTOFv6()
67{
68 //
69 // Default constructor
70 //
71}
72
73//_____________________________________________________________________________
74AliTOFv6::AliTOFv6(const char *name, const char *title)
75 : AliTOF(name,title)
76{
77 //
78 // Standard constructor
79 //
80}
81
82//_____________________________________________________________________________
83void AliTOFv6::CreateGeometry()
84{
85 //
86 // Create geometry for Time Of Flight version 0
87 //
88 //Begin_Html
89 /*
90 <img src="picts/AliTOFv6.gif">
91 */
92 //End_Html
93 //
94 // Creates common geometry
95 //
96 AliTOF::CreateGeometry();
97}
98
99//_____________________________________________________________________________
100void AliTOFv6::TOFpc(Float_t xtof, Float_t ytof, Float_t zlen1,
101 Float_t zlen2, Float_t zlen3, Float_t ztof0)
102{
103 //
104 // Definition of the Time Of Fligh Resistive Plate Chambers
105 // xFLT, yFLT, zFLT - sizes of TOF modules (large)
106
107 Float_t ycoor;
108 Float_t par[10];
109 Int_t idrotm[100];
110
111 Int_t *idtmed = fIdtmed->GetArray()-499;
112
113
114 par[0] = xtof / 2.;
115 par[1] = ytof / 2.;
116 par[2] = zlen1 / 2.;
117 gMC->Gsvolu("FTO1", "BOX ", idtmed[506], par, 3);
118 par[2] = zlen2 / 2.;
119 gMC->Gsvolu("FTO2", "BOX ", idtmed[506], par, 3);
120 par[2] = zlen3 / 2.;
121 gMC->Gsvolu("FTO3", "BOX ", idtmed[506], par, 3);
122
123
124// Positioning of modules
125
126 Float_t zcor1 = ztof0 - zlen1/2;
127 Float_t zcor2 = ztof0 - zlen1 - zlen2/2.;
128 Float_t zcor3 = 0.;
129
130 AliMatrix(idrotm[0], 90., 0., 0., 0., 90, -90.);
131 AliMatrix(idrotm[1], 90., 180., 0., 0., 90, 90.);
132 gMC->Gspos("FTO1", 1, "BTO1", 0, zcor1, 0, idrotm[0], "ONLY");
133 gMC->Gspos("FTO1", 2, "BTO1", 0, -zcor1, 0, idrotm[1], "ONLY");
134 gMC->Gspos("FTO1", 1, "BTO2", 0, zcor1, 0, idrotm[0], "ONLY");
135 gMC->Gspos("FTO1", 2, "BTO2", 0, -zcor1, 0, idrotm[1], "ONLY");
136 gMC->Gspos("FTO1", 1, "BTO3", 0, zcor1, 0, idrotm[0], "ONLY");
137 gMC->Gspos("FTO1", 2, "BTO3", 0, -zcor1, 0, idrotm[1], "ONLY");
138
139 gMC->Gspos("FTO2", 1, "BTO1", 0, zcor2, 0, idrotm[0], "ONLY");
140 gMC->Gspos("FTO2", 2, "BTO1", 0, -zcor2, 0, idrotm[1], "ONLY");
141 gMC->Gspos("FTO2", 1, "BTO2", 0, zcor2, 0, idrotm[0], "ONLY");
142 gMC->Gspos("FTO2", 2, "BTO2", 0, -zcor2, 0, idrotm[1], "ONLY");
143 gMC->Gspos("FTO2", 1, "BTO3", 0, zcor2, 0, idrotm[0], "ONLY");
144 gMC->Gspos("FTO2", 2, "BTO3", 0, -zcor2, 0, idrotm[1], "ONLY");
145
146 gMC->Gspos("FTO3", 0, "BTO1", 0, zcor3, 0, idrotm[0], "ONLY");
147 gMC->Gspos("FTO3", 0, "BTO2", 0, zcor3, 0, idrotm[0], "ONLY");
148 gMC->Gspos("FTO3", 0, "BTO3", 0, zcor3, 0, idrotm[0], "ONLY");
149
150// Subtraction the distance to TOF module boundaries
151
152 Float_t db = 7.;
153 Float_t xFLT, yFLT, zFLT1, zFLT2, zFLT3;
154
155 xFLT = xtof -(.5 +.5)*2;
156 yFLT = ytof;
157 zFLT1 = zlen1 - db;
158 zFLT2 = zlen2 - db;
159 zFLT3 = zlen3 - db;
160
161 // Definition of the Time Of Fligh Resistive Plate Chambers
162 // xFLT, yFLT, zFLT - sizes of TOF modules (large)
163
164 Float_t yFREON, xp, yp, zp;
165
166// fron gaps in MRPC chamber
167 yFREON = .11; //cm
168
169// Sizes of MRPC pads
170
171 xp = 3.0;
172 yp = 12.3*0.05; // 5% X0 of glass
173 zp = 3.0;
174
175// Subtraction of dead boundaries in X=2 cm and Z=7/2 cm
176
177cout <<"************************* TOF geometry **************************"<<endl;
178
179 Int_t nz1, nz2, nz3, nx; //- numbers of pixels
180 nx = Int_t (xFLT/xp);
181
182 printf("Number of pixel along x axis = %i",nx);
183
184 par[0] = xFLT/2;
185 par[1] = yFLT/2;
186 par[2] = (zFLT1 / 2.);
187 nz1 = Int_t (par[2]*2/zp);
188 gMC->Gsvolu("FLT1", "BOX ", idtmed[506], par, 3); // CO2
189 gMC->Gspos("FLT1", 0, "FTO1", 0., 0., 0., 0, "ONLY");
190 printf("Number of pixel along z axis (module 1) = %i",nz1);
191
192 par[2] = (zFLT2 / 2.);
193 nz2 = Int_t (par[2]*2/zp);
194 gMC->Gsvolu("FLT2", "BOX ", idtmed[506], par, 3); // CO2
195 gMC->Gspos("FLT2", 0, "FTO2", 0., 0., 0., 0, "ONLY");
196 printf("Number of pixel along z axis (module 2) = %i",nz2);
197
198 par[2] = (zFLT3 / 2.);
199 nz3 = Int_t (par[2]*2/zp);
200 gMC->Gsvolu("FLT3", "BOX ", idtmed[506], par, 3); // CO2
201 gMC->Gspos("FLT3", 0, "FTO3", 0., 0., 0., 0, "ONLY");
202 printf("Number of pixel along z axis (module 3) = %i",nz3);
203
204////////// Layers before detector ////////////////////
205
206// Alluminium layer in front 1.0 mm thick at the beginning
207 par[0] = -1;
208 par[1] = 0.1;
209 par[2] = -1;
210 ycoor = -yFLT/2 + par[1];
211 gMC->Gsvolu("FMY1", "BOX ", idtmed[508], par, 3); // Alluminium
212 gMC->Gspos("FMY1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
213 gMC->Gsvolu("FMY2", "BOX ", idtmed[508], par, 3); // Alluminium
214 gMC->Gspos("FMY2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
215 gMC->Gsvolu("FMY3", "BOX ", idtmed[508], par, 3); // Alluminium
216 gMC->Gspos("FMY3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
217
218// Honeycomb layer (1cm of special polyethilene)
219 ycoor = ycoor + par[1];
220 par[0] = -1;
221 par[1] = 0.5;
222 par[2] = -1;
223 ycoor = ycoor + par[1];
224 gMC->Gsvolu("FPL1", "BOX ", idtmed[503], par, 3); // Hony
225 gMC->Gspos("FPL1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
226 gMC->Gsvolu("FPL2", "BOX ", idtmed[503], par, 3); // Hony
227 gMC->Gspos("FPL2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
228 gMC->Gsvolu("FPL3", "BOX ", idtmed[503], par, 3); // Hony
229 gMC->Gspos("FPL3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
230
231///////////////// Detector itself //////////////////////
232
233 const Float_t SpaceBefore = 2.;
234
235 par[0] = -1;
236 par[1] = yp/2; // 5 %X0 thick of glass
237 par[2] = -1;
238 ycoor = -yFLT/2 + SpaceBefore;
239 gMC->Gsvolu("FLD1", "BOX ", idtmed[514], par, 3); // Glass
240 gMC->Gspos("FLD1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
241 gMC->Gsvolu("FLD2", "BOX ", idtmed[514], par, 3); // Glass
242 gMC->Gspos("FLD2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
243 gMC->Gsvolu("FLD3", "BOX ", idtmed[514], par, 3); // Glass
244 gMC->Gspos("FLD3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
245
246 gMC->Gsdvn("FLZ1", "FLD1", nz1, 3); //pixel size xp=zp=3
247 gMC->Gsdvn("FLZ2", "FLD2", nz2, 3);
248 gMC->Gsdvn("FLZ3", "FLD3", nz3, 3);
249 gMC->Gsdvn("FLX1", "FLZ1", nx, 1);
250 gMC->Gsdvn("FLX2", "FLZ2", nx, 1);
251 gMC->Gsdvn("FLX3", "FLZ3", nx, 1);
252
253// MRPC pixel itself
254 par[0] = -1;//xp/2;
255 par[1] = -1;//yp/2; // 5 %X0 thick of glass
256 par[2] = -1;//zp/2;
257 gMC->Gsvolu("FPA0", "BOX ", idtmed[514], par, 3);// Glass
258 gMC->Gspos("FPA0", 1, "FLX1", 0., 0., 0., 0, "ONLY");
259 gMC->Gspos("FPA0", 2, "FLX2", 0., 0., 0., 0, "ONLY");
260 gMC->Gspos("FPA0", 3, "FLX3", 0., 0., 0., 0, "ONLY");
261
262// Freon gas sencitive vol.ume
263 par[0] = -1;
264 par[1] = yFREON/2;
265 par[2] = -1;
266 gMC->Gsvolu("FPAD", "BOX ", idtmed[513], par, 3);// Freon
267 gMC->Gspos("FPAD", 0, "FPA0", 0., 0., 0., 0, "ONLY");
268
269////////// Layers after detector ////////////////////
270
271 const Float_t SpaceAfter=6.;
272
273// Honeycomb layer after (3cm)
274 par[0] = -1;
275 par[1] = 0.6;
276 par[2] = -1;
277 ycoor = -yFLT/2 + SpaceAfter - par[1];
278 gMC->Gsvolu("FPE1", "BOX ", idtmed[503], par, 3); // Hony
279 gMC->Gspos("FPE1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
280 gMC->Gsvolu("FPE2", "BOX ", idtmed[503], par, 3); // Hony
281 gMC->Gspos("FPE2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
282 gMC->Gsvolu("FPE3", "BOX ", idtmed[503], par, 3); // Hony
283 gMC->Gspos("FPE3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
284
285// Electronics (Cu) after
286 par[0] = -1;
287 par[1] = 1.43*0.05 / 2.; // 5% of X0
288 par[2] = -1;
289 ycoor = -yFLT/2 + SpaceAfter +par[1];
290 gMC->Gsvolu("FEC1", "BOX ", idtmed[501], par, 3); // Cu
291 gMC->Gspos("FEC1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
292 gMC->Gsvolu("FEC2", "BOX ", idtmed[501], par, 3); // Cu
293 gMC->Gspos("FEC2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
294 gMC->Gsvolu("FEC3", "BOX ", idtmed[501], par, 3); // Cu
295 gMC->Gspos("FEC3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
296
297// Cooling water after
298 ycoor = ycoor+par[1];
299 par[0] = -1;
300 par[1] = 36.1*0.02 / 2.; // 2% of X0
301 par[2] = -1;
302 ycoor = ycoor+par[1];
303 gMC->Gsvolu("FWA1", "BOX ", idtmed[515], par, 3); // Water
304 gMC->Gspos("FWA1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
305 gMC->Gsvolu("FWA2", "BOX ", idtmed[515], par, 3); // Water
306 gMC->Gspos("FWA2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
307 gMC->Gsvolu("FWA3", "BOX ", idtmed[515], par, 3); // Water
308 gMC->Gspos("FWA3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
309
310//back plate honycomb (2cm)
311 par[0] = -1;
312 par[1] = 2 / 2.;
313 par[2] = -1;
314 ycoor = yFLT/2 - par[1];
315 gMC->Gsvolu("FEG1", "BOX ", idtmed[503], par, 3); // Hony
316 gMC->Gspos("FEG1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
317 gMC->Gsvolu("FEG2", "BOX ", idtmed[503], par, 3); // Hony
318 gMC->Gspos("FEG2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
319 gMC->Gsvolu("FEG3", "BOX ", idtmed[503], par, 3); // Hony
320 gMC->Gspos("FEG3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
321
322
323}
324
325//_____________________________________________________________________________
326void AliTOFv6::DrawModule()
327{
328 //
329 // Draw a shaded view of the Time Of Flight version 1
330 //
331 // Set everything unseen
332 gMC->Gsatt("*", "seen", -1);
333 //
334 // Set ALIC mother transparent
335 gMC->Gsatt("ALIC","SEEN",0);
336 //
337 // Set the volumes visible
338 gMC->Gsatt("ALIC","SEEN",0);
339 gMC->Gsatt("FBAR","SEEN",1);
340 gMC->Gsatt("FTO1","SEEN",1);
341 gMC->Gsatt("FTO2","SEEN",1);
342 gMC->Gsatt("FTO3","SEEN",1);
343 gMC->Gsatt("FBT1","SEEN",1);
344 gMC->Gsatt("FBT2","SEEN",1);
345 gMC->Gsatt("FBT3","SEEN",1);
346 gMC->Gsatt("FDT1","SEEN",1);
347 gMC->Gsatt("FDT2","SEEN",1);
348 gMC->Gsatt("FDT3","SEEN",1);
349 gMC->Gsatt("FLT1","SEEN",1);
350 gMC->Gsatt("FLT2","SEEN",1);
351 gMC->Gsatt("FLT3","SEEN",1);
352 gMC->Gsatt("FPL1","SEEN",1);
353 gMC->Gsatt("FPL2","SEEN",1);
354 gMC->Gsatt("FPL3","SEEN",1);
355 gMC->Gsatt("FLD1","SEEN",1);
356 gMC->Gsatt("FLD2","SEEN",1);
357 gMC->Gsatt("FLD3","SEEN",1);
358 gMC->Gsatt("FLZ1","SEEN",1);
359 gMC->Gsatt("FLZ2","SEEN",1);
360 gMC->Gsatt("FLZ3","SEEN",1);
361 gMC->Gsatt("FLX1","SEEN",1);
362 gMC->Gsatt("FLX2","SEEN",1);
363 gMC->Gsatt("FLX3","SEEN",1);
364 gMC->Gsatt("FPA0","SEEN",1);
365 //
366 gMC->Gdopt("hide", "on");
367 gMC->Gdopt("shad", "on");
368 gMC->Gsatt("*", "fill", 7);
369 gMC->SetClipBox(".");
370 gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
371 gMC->DefaultRange();
372 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .02, .02);
373 gMC->Gdhead(1111, "Time Of Flight");
374 gMC->Gdman(18, 4, "MAN");
375 gMC->Gdopt("hide","off");
376}
377
378//_____________________________________________________________________________
379void AliTOFv6::CreateMaterials()
380{
381 //
382 // Define materials for the Time Of Flight
383 //
384 AliTOF::CreateMaterials();
385}
386
387//_____________________________________________________________________________
388void AliTOFv6::Init()
389{
390 //
391 // Initialise the detector after the geometry has been defined
392 //
ab76897d 393 printf("**************************************"
394 " TOF "
395 "**************************************\n");
396 printf("\n Version 6 of TOF initialing, "
397 "symmetric TOF\n\n");
398
937fe4a4 399 AliTOF::Init();
ab76897d 400
401 //
402 // Check that FRAME is there otherwise we have no place where to
403 // put TOF
404 AliModule* FRAME=gAlice->GetModule("FRAME");
405 if(!FRAME) {
406 Error("Ctor","TOF needs FRAME to be present\n");
407 exit(1);
408 } else
409 if(FRAME->IsVersion()!=1) {
410 Error("Ctor","FRAME version 1 needed with this version of TOF\n");
411 exit(1);
412 }
413
937fe4a4 414 fIdFTO2=gMC->VolId("FTO2");
415 fIdFTO3=gMC->VolId("FTO3");
416 fIdFLT1=gMC->VolId("FLT1");
417 fIdFLT2=gMC->VolId("FLT2");
418 fIdFLT3=gMC->VolId("FLT3");
ab76897d 419
420 printf("**************************************"
421 " TOF "
422 "**************************************\n");
937fe4a4 423}
424
425//_____________________________________________________________________________
426void AliTOFv6::StepManager()
427{
428 //
429 // Procedure called at each step in the Time Of Flight
430 //
431 TLorentzVector mom, pos;
826b71ec 432 Float_t hits[8],rho,z,phi,phid;
433 Int_t sector, plate, pad_x, pad_z;
434 Int_t copy, pad_x_id, pad_z_id, i;
937fe4a4 435 Int_t *idtmed = fIdtmed->GetArray()-499;
436 if(gMC->GetMedium()==idtmed[514-1] &&
437 gMC->IsTrackEntering() && gMC->TrackCharge()
438 && gMC->CurrentVolID(copy)==fIdSens) {
439 TClonesArray &lhits = *fHits;
826b71ec 440
441
442 //_________getting information about hit volumes_____________
443
444 pad_z_id=gMC->CurrentVolOffID(3,copy);
445 pad_z=copy;
446
447 pad_x_id=gMC->CurrentVolOffID(2,copy);
448 pad_x=copy;
449
450 gMC->TrackPosition(pos);
451 gMC->TrackMomentum(mom);
452
453 rho = sqrt(pos[0]*pos[0]+pos[1]*pos[1]);
454 phi = TMath::ACos(pos[0]/rho);
455 Float_t as = TMath::ASin(pos[1]/rho);
456 if (as<0) phi = 2*3.141592654-phi;
457
458 z = pos[2];
459
460 if (z<=62. && z>=-62) plate = 3;
461 if (z<=216. && z>62.) plate = 4;
462 if (z>=-216. && z<-62.) plate = 2;
463 if (z>216.) plate = 5;
464 if (z<-216.) plate = 1;
465
466 phid = phi*kRaddeg;
467 sector = Int_t (phid/20.);
468 sector++;
469
937fe4a4 470 Double_t ptot=mom.Rho();
471 Double_t norm=1/ptot;
472 for(i=0;i<3;++i) {
473 hits[i]=pos[i];
474 hits[i+3]=mom[i]*norm;
475 }
476 hits[6]=ptot;
477 hits[7]=pos[3];
826b71ec 478 new(lhits[fNhits++]) AliTOFhit(fIshunt,gAlice->CurrentTrack(),sector,plate,pad_x,pad_z,hits);
937fe4a4 479 }
480}