1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 ///////////////////////////////////////////////////////////////////////////////
20 // This class contains the functions for version 4 of the Time Of Flight //
23 // VERSION WITH 5 MODULES AND TILTED STRIPS
25 // FULL COVERAGE VERSION
32 // University of Salerno - Italy
35 // University of Bologna - Italy
40 <img src="picts/AliTOFv4Class.gif">
44 ///////////////////////////////////////////////////////////////////////////////
46 #include <Riostream.h>
50 #include <TGeometry.h>
51 #include <TLorentzVector.h>
54 #include <TVirtualMC.h>
62 //_____________________________________________________________________________
66 // Default constructor
70 //_____________________________________________________________________________
71 AliTOFv4::AliTOFv4(const char *name, const char *title)
75 // Standard constructor
78 // Check that FRAME is there otherwise we have no place where to
80 AliModule* frame=gAlice->GetModule("FRAME");
82 Error("Ctor","TOF needs FRAME to be present\n");
85 if(frame->IsVersion()!=1) {
86 Error("Ctor","FRAME version 1 needed with this version of TOF\n");
92 //____________________________________________________________________________
94 void AliTOFv4::BuildGeometry()
97 // Build TOF ROOT geometry for the ALICE event display
100 const int kColorTOF = 27;
103 top = gAlice->GetGeometry()->GetNode("alice");
105 // Position the different copies
106 const Float_t krTof =(fRmax+fRmin)/2;
107 const Float_t khTof = fRmax-fRmin;
108 const Int_t kNTof = fNTof;
109 const Float_t kPi = TMath::Pi();
110 const Float_t kangle = 2*kPi/kNTof;
113 // define offset for nodes
114 Float_t zOffsetC = fZtof - fZlenC*0.5;
115 Float_t zOffsetB = fZtof - fZlenC - fZlenB*0.5;
116 Float_t zOffsetA = 0.;
117 // Define TOF basic volume
119 char nodeName0[7], nodeName1[7], nodeName2[7];
120 char nodeName3[7], nodeName4[7], rotMatNum[7];
122 new TBRIK("S_TOF_C","TOF box","void",
123 fStripLn*0.5,khTof*0.5,fZlenC*0.5);
124 new TBRIK("S_TOF_B","TOF box","void",
125 fStripLn*0.5,khTof*0.5,fZlenB*0.5);
126 new TBRIK("S_TOF_A","TOF box","void",
127 fStripLn*0.5,khTof*0.5,fZlenA*0.5);
129 for (Int_t nodeNum=1;nodeNum<19;nodeNum++){
132 sprintf(rotMatNum,"rot50%i",nodeNum);
133 sprintf(nodeName0,"FTO00%i",nodeNum);
134 sprintf(nodeName1,"FTO10%i",nodeNum);
135 sprintf(nodeName2,"FTO20%i",nodeNum);
136 sprintf(nodeName3,"FTO30%i",nodeNum);
137 sprintf(nodeName4,"FTO40%i",nodeNum);
140 sprintf(rotMatNum,"rot5%i",nodeNum);
141 sprintf(nodeName0,"FTO0%i",nodeNum);
142 sprintf(nodeName1,"FTO1%i",nodeNum);
143 sprintf(nodeName2,"FTO2%i",nodeNum);
144 sprintf(nodeName3,"FTO3%i",nodeNum);
145 sprintf(nodeName4,"FTO4%i",nodeNum);
148 new TRotMatrix(rotMatNum,rotMatNum,90,-20*nodeNum,90,90-20*nodeNum,0,0);
149 ang = (4.5-nodeNum) * kangle;
152 node = new TNode(nodeName0,nodeName0,"S_TOF_C",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),zOffsetC,rotMatNum);
153 node->SetLineColor(kColorTOF);
157 node = new TNode(nodeName1,nodeName1,"S_TOF_C",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),-zOffsetC,rotMatNum);
158 node->SetLineColor(kColorTOF);
162 node = new TNode(nodeName2,nodeName2,"S_TOF_B",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),zOffsetB,rotMatNum);
163 node->SetLineColor(kColorTOF);
167 node = new TNode(nodeName3,nodeName3,"S_TOF_B",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),-zOffsetB,rotMatNum);
168 node->SetLineColor(kColorTOF);
172 node = new TNode(nodeName4,nodeName4,"S_TOF_A",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),zOffsetA,rotMatNum);
173 node->SetLineColor(kColorTOF);
175 } // end loop on nodeNum
180 //_____________________________________________________________________________
181 void AliTOFv4::CreateGeometry()
184 // Create geometry for Time Of Flight version 0
188 <img src="picts/AliTOFv4.gif">
192 // Creates common geometry
194 AliTOF::CreateGeometry();
197 //_____________________________________________________________________________
198 void AliTOFv4::TOFpc(Float_t xtof, Float_t ytof, Float_t zlenC,
199 Float_t zlenB, Float_t zlenA, Float_t ztof0)
202 // Definition of the Time Of Fligh Resistive Plate Chambers
203 // xFLT, yFLT, zFLT - sizes of TOF modules (large)
205 Float_t ycoor, zcoor;
207 Int_t *idtmed = fIdtmed->GetArray()-499;
210 Float_t hTof = fRmax-fRmin;
212 Float_t radius = fRmin+2.;//cm
216 par[2] = zlenC * 0.5;
217 gMC->Gsvolu("FTOC", "BOX ", idtmed[506], par, 3);
218 par[2] = zlenB * 0.5;
219 gMC->Gsvolu("FTOB", "BOX ", idtmed[506], par, 3);
220 par[2] = zlenA * 0.5;
221 gMC->Gsvolu("FTOA", "BOX ", idtmed[506], par, 3);
224 // Positioning of modules
226 Float_t zcor1 = ztof0 - zlenC*0.5;
227 Float_t zcor2 = ztof0 - zlenC - zlenB*0.5;
230 AliMatrix(idrotm[0], 90., 0., 0., 0., 90,-90.);
231 AliMatrix(idrotm[1], 90.,180., 0., 0., 90, 90.);
232 gMC->Gspos("FTOC", 1, "BTO1", 0, zcor1, 0, idrotm[0], "ONLY");
233 gMC->Gspos("FTOC", 2, "BTO1", 0, -zcor1, 0, idrotm[1], "ONLY");
234 gMC->Gspos("FTOC", 1, "BTO2", 0, zcor1, 0, idrotm[0], "ONLY");
235 gMC->Gspos("FTOC", 2, "BTO2", 0, -zcor1, 0, idrotm[1], "ONLY");
236 gMC->Gspos("FTOC", 1, "BTO3", 0, zcor1, 0, idrotm[0], "ONLY");
237 gMC->Gspos("FTOC", 2, "BTO3", 0, -zcor1, 0, idrotm[1], "ONLY");
239 gMC->Gspos("FTOB", 1, "BTO1", 0, zcor2, 0, idrotm[0], "ONLY");
240 gMC->Gspos("FTOB", 2, "BTO1", 0, -zcor2, 0, idrotm[1], "ONLY");
241 gMC->Gspos("FTOB", 1, "BTO2", 0, zcor2, 0, idrotm[0], "ONLY");
242 gMC->Gspos("FTOB", 2, "BTO2", 0, -zcor2, 0, idrotm[1], "ONLY");
243 gMC->Gspos("FTOB", 1, "BTO3", 0, zcor2, 0, idrotm[0], "ONLY");
244 gMC->Gspos("FTOB", 2, "BTO3", 0, -zcor2, 0, idrotm[1], "ONLY");
246 gMC->Gspos("FTOA", 0, "BTO1", 0, zcor3, 0, idrotm[0], "ONLY");
247 gMC->Gspos("FTOA", 0, "BTO2", 0, zcor3, 0, idrotm[0], "ONLY");
248 gMC->Gspos("FTOA", 0, "BTO3", 0, zcor3, 0, idrotm[0], "ONLY");
250 Float_t db = 0.5;//cm
251 Float_t xFLT, xFST, yFLT, zFLTA, zFLTB, zFLTC;
259 xFST = xFLT-fDeadBndX*2;//cm
261 // Sizes of MRPC pads
263 Float_t yPad = 0.505;//cm
265 // Large not sensitive volumes with Insensitive Freon
269 if (fDebug) cout << ClassName() <<
270 ": ************************* TOF geometry **************************"<<endl;
272 par[2] = (zFLTA *0.5);
273 gMC->Gsvolu("FLTA", "BOX ", idtmed[512], par, 3); // Insensitive Freon
274 gMC->Gspos ("FLTA", 0, "FTOA", 0., 0., 0., 0, "ONLY");
276 par[2] = (zFLTB * 0.5);
277 gMC->Gsvolu("FLTB", "BOX ", idtmed[512], par, 3); // Insensitive Freon
278 gMC->Gspos ("FLTB", 0, "FTOB", 0., 0., 0., 0, "ONLY");
280 par[2] = (zFLTC * 0.5);
281 gMC->Gsvolu("FLTC", "BOX ", idtmed[512], par, 3); // Insensitive Freon
282 gMC->Gspos ("FLTC", 0, "FTOC", 0., 0., 0., 0, "ONLY");
284 ///// Layers of Aluminum before and after detector /////
285 ///// Aluminum Box for Modules (1.8 mm thickness) /////
286 ///// lateral walls not simulated for the time being
287 //const Float_t khAlWall = 0.18;
289 const Float_t khAlWall = 0.11;
291 par[1] = khAlWall/2.;//cm
292 ycoor = -yFLT/2 + par[1];
293 par[2] = (zFLTA *0.5);
294 gMC->Gsvolu("FALA", "BOX ", idtmed[508], par, 3); // Alluminium
295 gMC->Gspos ("FALA", 1, "FLTA", 0., ycoor, 0., 0, "ONLY");
296 gMC->Gspos ("FALA", 2, "FLTA", 0.,-ycoor, 0., 0, "ONLY");
297 par[2] = (zFLTB *0.5);
298 gMC->Gsvolu("FALB", "BOX ", idtmed[508], par, 3); // Alluminium
299 gMC->Gspos ("FALB", 1, "FLTB", 0., ycoor, 0., 0, "ONLY");
300 gMC->Gspos ("FALB", 2, "FLTB", 0.,-ycoor, 0., 0, "ONLY");
301 par[2] = (zFLTC *0.5);
302 gMC->Gsvolu("FALC", "BOX ", idtmed[508], par, 3); // Alluminium
303 gMC->Gspos ("FALC", 1, "FLTC", 0., ycoor, 0., 0, "ONLY");
304 gMC->Gspos ("FALC", 2, "FLTC", 0.,-ycoor, 0., 0, "ONLY");
306 ///////////////// Detector itself //////////////////////
308 const Float_t kdeadBound = fDeadBndZ; //cm non-sensitive between the pad edge
309 //and the boundary of the strip
310 const Int_t knx = fNpadX; // number of pads along x
311 const Int_t knz = fNpadZ; // number of pads along z
312 const Float_t kspace = fSpace; //cm distance from the front plate of the box
314 Float_t zSenStrip = fZpad*fNpadZ;//cm
315 Float_t stripWidth = zSenStrip + 2*kdeadBound;
319 par[2] = stripWidth*0.5;
321 // new description for strip volume -double stack strip-
322 // -- all constants are expressed in cm
323 // heigth of different layers
324 const Float_t khhony = 0.8 ; // heigth of HONY Layer
325 const Float_t khpcby = 0.08 ; // heigth of PCB Layer
326 const Float_t khmyly = 0.035 ; // heigth of MYLAR Layer
327 const Float_t khgraphy = 0.02 ; // heigth of GRAPHITE Layer
328 const Float_t khglasseiy = 0.135; // 0.6 Ext. Glass + 1.1 i.e. (Int. Glass/2) (mm)
329 const Float_t khsensmy = 0.11 ; // heigth of Sensitive Freon Mixture
330 const Float_t kwsensmz = 2*3.5 ; // cm
331 const Float_t klsensmx = 48*2.5; // cm
332 const Float_t kwpadz = 3.5; // cm z dimension of the FPAD volume
333 const Float_t klpadx = 2.5; // cm x dimension of the FPAD volume
335 // heigth of the FSTR Volume (the strip volume)
336 const Float_t khstripy = 2*khhony+3*khpcby+4*(khmyly+khgraphy+khglasseiy)+2*khsensmy;
337 // width of the FSTR Volume (the strip volume)
338 const Float_t kwstripz = 10.;
339 // length of the FSTR Volume (the strip volume)
340 const Float_t klstripx = 122.;
342 Float_t parfp[3]={klstripx*0.5,khstripy*0.5,kwstripz*0.5};
343 // coordinates of the strip center in the strip reference frame; used for positioning
344 // internal strip volumes
345 Float_t posfp[3]={0.,0.,0.};
348 // FSTR volume definition and filling this volume with non sensitive Gas Mixture
349 gMC->Gsvolu("FSTR","BOX",idtmed[512],parfp,3);
350 //-- HONY Layer definition
352 parfp[1] = khhony*0.5;
354 gMC->Gsvolu("FHON","BOX",idtmed[503],parfp,3);
355 // positioning 2 HONY Layers on FSTR volume
357 posfp[1]=-khstripy*0.5+parfp[1];
358 gMC->Gspos("FHON",1,"FSTR",0., posfp[1],0.,0,"ONLY");
359 gMC->Gspos("FHON",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
361 //-- PCB Layer definition
362 parfp[1] = khpcby*0.5;
363 gMC->Gsvolu("FPCB","BOX",idtmed[504],parfp,3);
364 // positioning 2 PCB Layers on FSTR volume
365 posfp[1]=-khstripy*0.5+khhony+parfp[1];
366 gMC->Gspos("FPCB",1,"FSTR",0., posfp[1],0.,0,"ONLY");
367 gMC->Gspos("FPCB",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
368 // positioning the central PCB layer
369 gMC->Gspos("FPCB",3,"FSTR",0.,0.,0.,0,"ONLY");
373 //-- MYLAR Layer definition
374 parfp[1] = khmyly*0.5;
375 gMC->Gsvolu("FMYL","BOX",idtmed[511],parfp,3);
376 // positioning 2 MYLAR Layers on FSTR volume
377 posfp[1] = -khstripy*0.5+khhony+khpcby+parfp[1];
378 gMC->Gspos("FMYL",1,"FSTR",0., posfp[1],0.,0,"ONLY");
379 gMC->Gspos("FMYL",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
380 // adding further 2 MYLAR Layers on FSTR volume
381 posfp[1] = khpcby*0.5+parfp[1];
382 gMC->Gspos("FMYL",3,"FSTR",0., posfp[1],0.,0,"ONLY");
383 gMC->Gspos("FMYL",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
386 //-- Graphite Layer definition
387 parfp[1] = khgraphy*0.5;
388 gMC->Gsvolu("FGRP","BOX",idtmed[502],parfp,3);
389 // positioning 2 Graphite Layers on FSTR volume
390 posfp[1] = -khstripy*0.5+khhony+khpcby+khmyly+parfp[1];
391 gMC->Gspos("FGRP",1,"FSTR",0., posfp[1],0.,0,"ONLY");
392 gMC->Gspos("FGRP",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
393 // adding further 2 Graphite Layers on FSTR volume
394 posfp[1] = khpcby*0.5+khmyly+parfp[1];
395 gMC->Gspos("FGRP",3,"FSTR",0., posfp[1],0.,0,"ONLY");
396 gMC->Gspos("FGRP",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
399 //-- Glass (EXT. +Semi INT.) Layer definition
400 parfp[1] = khglasseiy*0.5;
401 gMC->Gsvolu("FGLA","BOX",idtmed[514],parfp,3);
402 // positioning 2 Glass Layers on FSTR volume
403 posfp[1] = -khstripy*0.5+khhony+khpcby+khmyly+khgraphy+parfp[1];
404 gMC->Gspos("FGLA",1,"FSTR",0., posfp[1],0.,0,"ONLY");
405 gMC->Gspos("FGLA",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
406 // adding further 2 Glass Layers on FSTR volume
407 posfp[1] = khpcby*0.5+khmyly+khgraphy+parfp[1];
408 gMC->Gspos("FGLA",3,"FSTR",0., posfp[1],0.,0,"ONLY");
409 gMC->Gspos("FGLA",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
412 //-- Sensitive Mixture Layer definition
413 parfp[0] = klsensmx*0.5;
414 parfp[1] = khsensmy*0.5;
415 parfp[2] = kwsensmz*0.5;
416 gMC->Gsvolu("FSEN","BOX",idtmed[513],parfp,3);
417 gMC->Gsvolu("FNSE","BOX",idtmed[512],parfp,3);
418 // positioning 2 gas Layers on FSTR volume
419 // the upper is insensitive freon
420 // while the remaining is sensitive
421 posfp[1] = khpcby*0.5+khmyly+khgraphy+khglasseiy+parfp[1];
422 gMC->Gspos("FNSE",0,"FSTR", 0., posfp[1],0.,0,"ONLY");
423 gMC->Gspos("FSEN",0,"FSTR", 0.,-posfp[1],0.,0,"ONLY");
425 // dividing FSEN along z in knz=2 and along x in knx=48
426 gMC->Gsdvn("FSEZ","FSEN",knz,3);
427 gMC->Gsdvn("FSEX","FSEZ",knx,1);
429 // FPAD volume definition
430 parfp[0] = klpadx*0.5;
431 parfp[1] = khsensmy*0.5;
432 parfp[2] = kwpadz*0.5;
433 gMC->Gsvolu("FPAD","BOX",idtmed[513],parfp,3);
434 // positioning the FPAD volumes on previous divisions
435 gMC->Gspos("FPAD",0,"FSEX",0.,0.,0.,0,"ONLY");
437 //// Positioning the Strips (FSTR) in the FLT volumes /////
441 Float_t t = zFLTC+zFLTB+zFLTA*0.5+ 2*db;//Half Width of Barrel
443 Float_t gap = fGapA+0.5; //cm updated distance between the strip axis
449 ycoor = -14.5 + kspace ; //2 cm over front plate
451 AliMatrix (idrotm[0], 90., 0.,90.,90.,0., 90.);
452 gMC->Gspos("FSTR",j,"FLTA",0.,ycoor, 0.,idrotm[0],"ONLY");
454 printf("%s: %f, St. %2i, Pl.3 ",ClassName(),ang*kRaddeg,i);
455 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
459 Int_t upDown = -1; // upDown=-1 -> Upper strip
460 // upDown=+1 -> Lower strip
462 ang = atan(zcoor/radius);
464 AliMatrix (idrotm[nrot], 90., 0.,90.-ang,90.,-ang, 90.);
465 AliMatrix (idrotm[nrot+1],90.,180.,90.+ang,90., ang, 90.);
467 ycoor = -14.5+ kspace; //2 cm over front plate
468 ycoor += (1-(upDown+1)/2)*gap;
469 gMC->Gspos("FSTR",j ,"FLTA",0.,ycoor, zcoor,idrotm[nrot], "ONLY");
470 gMC->Gspos("FSTR",j+1,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY");
472 printf("%s: %f, St. %2i, Pl.3 ",ClassName(),ang*kRaddeg,i);
473 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
476 upDown*= -1; // Alternate strips
477 zcoor = zcoor-(zSenStrip/2)/TMath::Cos(ang)-
478 upDown*gap*TMath::Tan(ang)-
479 (zSenStrip/2)/TMath::Cos(ang);
480 } while (zcoor-(stripWidth/2)*TMath::Cos(ang)>-t+zFLTC+zFLTB+db*2);
482 zcoor = zcoor+(zSenStrip/2)/TMath::Cos(ang)+
483 upDown*gap*TMath::Tan(ang)+
484 (zSenStrip/2)/TMath::Cos(ang);
487 zcoor = zcoor-(zSenStrip/2)/TMath::Cos(ang)-
488 upDown*gap*TMath::Tan(ang)-
489 (zSenStrip/2)/TMath::Cos(ang);
491 ang = atan(zcoor/radius);
493 AliMatrix (idrotm[nrot], 90., 0.,90.-ang,90.,-ang, 90.);
494 AliMatrix (idrotm[nrot+1],90.,180.,90.+ang,90., ang, 90.);
497 ycoor = -14.5+ kspace; //2 cm over front plate
498 ycoor += (1-(upDown+1)/2)*gap;
499 gMC->Gspos("FSTR",j ,"FLTA",0.,ycoor, zcoor,idrotm[nrot], "ONLY");
500 gMC->Gspos("FSTR",j+1,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY");
502 printf("%s: %f, St. %2i, Pl.3 ",ClassName(),ang*kRaddeg,i);
503 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
505 ycoor = -hTof/2.+ kspace;//2 cm over front plate
512 Float_t deadRegion = 1.0;//cm
514 zpos = zcoor - (zSenStrip/2)/TMath::Cos(ang)-
515 upDown*gap*TMath::Tan(ang)-
516 (zSenStrip/2)/TMath::Cos(ang)-
517 deadRegion/TMath::Cos(ang);
519 ang = atan(zpos/radius);
521 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
523 ycoor = -hTof*0.5+ kspace ; //2 cm over front plate
524 ycoor += (1-(upDown+1)/2)*gap;
525 zcoor = zpos+(zFLTA*0.5+zFLTB*0.5+db); // Moves to the system of the modulus FLTB
526 gMC->Gspos("FSTR",i, "FLTB", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
528 printf("%s: %f, St. %2i, Pl.4 ",ClassName(),ang*kRaddeg,i);
529 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
535 zpos = zpos - (zSenStrip/2)/TMath::Cos(ang)-
536 upDown*gap*TMath::Tan(ang)-
537 (zSenStrip/2)/TMath::Cos(ang);
538 ang = atan(zpos/radius);
540 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
542 Float_t deltaSpaceinB=-0.5; // [cm] to avoid overlaps with the end of freon frame
543 Float_t deltaGapinB=0.5; // [cm] to avoid overlaps in between initial strips
544 ycoor = -hTof*0.5+ kspace+deltaSpaceinB ; //2 cm over front plate
545 ycoor += (1-(upDown+1)/2)*(gap+deltaGapinB);
546 zcoor = zpos+(zFLTA*0.5+zFLTB*0.5+db); // Moves to the system of the modulus FLTB
547 gMC->Gspos("FSTR",i, "FLTB", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
549 printf("%s: %f, St. %2i, Pl.4 ",ClassName(),ang*kRaddeg,i);
550 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
554 } while (TMath::Abs(ang*kRaddeg)<22.5);
555 //till we reach a tilting angle of 22.5 degrees
557 ycoor = -hTof*0.5+ kspace ; //2 cm over front plate
558 zpos = zpos - zSenStrip/TMath::Cos(ang);
559 // this avoid overlaps in between outer strips in plate B
560 Float_t deltaMovingUp=0.8; // [cm]
561 Float_t deltaMovingDown=-0.5; // [cm]
564 ang = atan(zpos/radius);
566 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
568 zcoor = zpos+(zFLTB/2+zFLTA/2+db);
569 gMC->Gspos("FSTR",i, "FLTB", 0., ycoor+deltaMovingDown+deltaMovingUp, zcoor,idrotm[nrot], "ONLY");
570 deltaMovingUp+=0.8; // update delta moving toward the end of the plate
571 zpos = zpos - zSenStrip/TMath::Cos(ang);
573 printf("%s: %f, St. %2i, Pl.4 ",ClassName(),ang*kRaddeg,i);
574 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
578 } while (zpos-stripWidth*0.5/TMath::Cos(ang)>-t+zFLTC+db);
582 zpos = zpos + zSenStrip/TMath::Cos(ang);
584 zpos = zpos - (zSenStrip/2)/TMath::Cos(ang)+
586 (zSenStrip/2)/TMath::Cos(ang);
590 Float_t deltaGap=-2.5; // [cm] update distance from strip center and plate
591 ycoor= -hTof*0.5+kspace+gap+deltaGap;
595 ang = atan(zpos/radius);
597 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
599 zcoor = zpos+(zFLTC*0.5+zFLTB+zFLTA*0.5+db*2);
600 gMC->Gspos("FSTR",i, "FLTC", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
602 printf("%s: %f, St. %2i, Pl.5 ",ClassName(),ang*kRaddeg,i);
603 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
605 zpos = zpos - zSenStrip/TMath::Cos(ang);
606 } while (zpos-stripWidth*TMath::Cos(ang)*0.5>-t);
609 ////////// Layers after strips /////////////////
610 // Al Layer thickness (2.3mm) factor 0.7
612 Float_t overSpace = fOverSpc;//cm
615 par[1] = 0.115*0.7; // factor 0.7
616 par[2] = (zFLTA *0.5);
617 ycoor = -yFLT/2 + overSpace + par[1];
618 gMC->Gsvolu("FPEA", "BOX ", idtmed[508], par, 3); // Al
619 gMC->Gspos ("FPEA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
620 par[2] = (zFLTB *0.5);
621 gMC->Gsvolu("FPEB", "BOX ", idtmed[508], par, 3); // Al
622 gMC->Gspos ("FPEB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
623 par[2] = (zFLTC *0.5);
624 gMC->Gsvolu("FPEC", "BOX ", idtmed[508], par, 3); // Al
625 gMC->Gspos ("FPEC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
628 // plexiglass thickness: 1.5 mm ; factor 0.3
631 par[1] = 0.075*0.3; // factor 0.3
632 par[2] = (zFLTA *0.5);
634 gMC->Gsvolu("FECA", "BOX ", idtmed[505], par, 3); // Plexigl.
635 gMC->Gspos ("FECA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
636 par[2] = (zFLTB *0.5);
637 gMC->Gsvolu("FECB", "BOX ", idtmed[505], par, 3); // Plexigl.
638 gMC->Gspos ("FECB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
639 par[2] = (zFLTC *0.5);
640 gMC->Gsvolu("FECC", "BOX ", idtmed[505], par, 3); // Plexigl.
641 gMC->Gspos ("FECC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
646 par[1] = (yFLT/2-ycoor-khAlWall)*0.5; // Aluminum layer considered (0.18 cm)
647 par[2] = (zFLTA *0.5);
649 gMC->Gsvolu("FAIA", "BOX ", idtmed[500], par, 3); // Air
650 gMC->Gspos ("FAIA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
651 par[2] = (zFLTB *0.5);
652 gMC->Gsvolu("FAIB", "BOX ", idtmed[500], par, 3); // Air
653 gMC->Gspos ("FAIB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
654 par[2] = (zFLTC *0.5);
655 gMC->Gsvolu("FAIC", "BOX ", idtmed[500], par, 3); // Air
656 gMC->Gspos ("FAIC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
659 // start with cards and cooling tubes
660 // finally, cards, cooling tubes and layer for thermal dispersion
662 // card volume definition
664 // see GEOM200 in GEANT manual
665 AliMatrix(idrotm[98], 90., 0., 90., 90., 0., 0.); // 0 deg
671 gMC->Gsvolu("FCAR", "BOX ", idtmed[504], cardpar, 3); // PCB Card
672 //alu plate volume definition
675 gMC->Gsvolu("FALP", "BOX ", idtmed[508], cardpar, 3); // Alu Plate
678 // central module positioning (FAIA)
679 Float_t cardpos[3], aplpos2, stepforcardA=6.625;
683 Float_t aplpos1 = -2.;
685 for (icard=0; icard<15; ++icard) {
686 cardpos[2]= cardpos[2]+stepforcardA;
687 aplpos2 = cardpos[2]+0.15;
688 gMC->Gspos("FCAR",icard,"FAIA",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
689 gMC->Gspos("FALP",icard,"FAIA",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
694 // intermediate module positioning (FAIB)
695 Float_t stepforcardB= 7.05;
697 for (icard=0; icard<19; ++icard) {
698 cardpos[2]= cardpos[2]+stepforcardB;
699 aplpos2 = cardpos[2]+0.15;
700 gMC->Gspos("FCAR",icard,"FAIB",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
701 gMC->Gspos("FALP",icard,"FAIB",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
705 // outer module positioning (FAIC)
706 Float_t stepforcardC= 8.45238;
708 for (icard=0; icard<20; ++icard) {
709 cardpos[2]= cardpos[2]+stepforcardC;
710 aplpos2 = cardpos[2]+0.15;
711 gMC->Gspos("FCAR",icard,"FAIC",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
712 gMC->Gspos("FALP",icard,"FAIC",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
715 // tube volume definition
720 gMC->Gsvolu("FTUB", "TUBE", idtmed[516], tubepar, 3); // cooling tubes (steel)
724 gMC->Gsvolu("FITU", "TUBE", idtmed[515], tubepar, 3); // cooling water
725 // positioning water tube into the steel one
726 gMC->Gspos("FITU",1,"FTUB",0.,0.,0.,0,"ONLY");
730 AliMatrix(idrotm[99], 180., 90., 90., 90., 90., 0.);
731 // central module positioning (FAIA)
732 Float_t tubepos[3], tdis=0.6;
734 tubepos[1]= cardpos[1];
735 tubepos[2]= -53.+tdis;
738 for (itub=0; itub<15; ++itub) {
739 tubepos[2]= tubepos[2]+stepforcardA;
740 gMC->Gspos("FTUB",itub,"FAIA",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
745 // intermediate module positioning (FAIB)
746 tubepos[2]= -70.5+tdis;
747 for (itub=0; itub<19; ++itub) {
748 tubepos[2]= tubepos[2]+stepforcardB;
749 gMC->Gspos("FTUB",itub,"FAIB",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
753 // outer module positioning (FAIC)
754 tubepos[2]= -88.75+tdis;
755 for (itub=0; itub<20; ++itub) {
756 tubepos[2]= tubepos[2]+stepforcardC;
757 gMC->Gspos("FTUB",itub,"FAIC",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
763 //_____________________________________________________________________________
764 void AliTOFv4::DrawModule() const
767 // Draw a shaded view of the Time Of Flight version 4
769 // Set everything unseen
770 gMC->Gsatt("*", "seen", -1);
772 // Set ALIC mother transparent
773 gMC->Gsatt("ALIC","SEEN",0);
775 // Set the volumes visible
776 gMC->Gsatt("ALIC","SEEN",0);
778 gMC->Gsatt("FTOA","SEEN",1);
779 gMC->Gsatt("FTOB","SEEN",1);
780 gMC->Gsatt("FTOC","SEEN",1);
781 gMC->Gsatt("FLTA","SEEN",1);
782 gMC->Gsatt("FLTB","SEEN",1);
783 gMC->Gsatt("FLTC","SEEN",1);
784 gMC->Gsatt("FPLA","SEEN",1);
785 gMC->Gsatt("FPLB","SEEN",1);
786 gMC->Gsatt("FPLC","SEEN",1);
787 gMC->Gsatt("FSTR","SEEN",1);
788 gMC->Gsatt("FPEA","SEEN",1);
789 gMC->Gsatt("FPEB","SEEN",1);
790 gMC->Gsatt("FPEC","SEEN",1);
792 gMC->Gsatt("FLZ1","SEEN",0);
793 gMC->Gsatt("FLZ2","SEEN",0);
794 gMC->Gsatt("FLZ3","SEEN",0);
795 gMC->Gsatt("FLX1","SEEN",0);
796 gMC->Gsatt("FLX2","SEEN",0);
797 gMC->Gsatt("FLX3","SEEN",0);
798 gMC->Gsatt("FPAD","SEEN",0);
800 gMC->Gdopt("hide", "on");
801 gMC->Gdopt("shad", "on");
802 gMC->Gsatt("*", "fill", 7);
803 gMC->SetClipBox(".");
804 gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
806 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .02, .02);
807 gMC->Gdhead(1111, "Time Of Flight");
808 gMC->Gdman(18, 4, "MAN");
809 gMC->Gdopt("hide","off");
811 //_____________________________________________________________________________
812 void AliTOFv4::DrawDetectorModules()
815 // Draw a shaded view of the TOF detector version 4
819 //Set ALIC mother transparent
820 gMC->Gsatt("ALIC","SEEN",0);
823 //Set volumes visible
826 // Level 1 for TOF volumes
827 gMC->Gsatt("B077","seen",0);
830 //==========> Level 2
832 gMC->Gsatt("B076","seen",-1); // all B076 sub-levels skipped -
833 gMC->Gsatt("B071","seen",0);
834 gMC->Gsatt("B074","seen",0);
835 gMC->Gsatt("B075","seen",0);
836 gMC->Gsatt("B080","seen",0); // B080 does not has sub-level
840 gMC->Gsatt("B063","seen",-1); // all B063 sub-levels skipped -
841 gMC->Gsatt("B065","seen",-1); // all B065 sub-levels skipped -
842 gMC->Gsatt("B067","seen",-1); // all B067 sub-levels skipped -
843 gMC->Gsatt("B069","seen",-1); // all B069 sub-levels skipped -
844 gMC->Gsatt("B056","seen",0); // B056 does not has sub-levels -
845 gMC->Gsatt("B059","seen",-1); // all B059 sub-levels skipped -
846 gMC->Gsatt("B072","seen",-1); // all B072 sub-levels skipped -
847 gMC->Gsatt("BTR1","seen",0); // BTR1 do not have sub-levels -
848 gMC->Gsatt("BTO1","seen",0);
852 gMC->Gsatt("BTR2","seen",0); // BTR2 does not has sub-levels -
853 gMC->Gsatt("BTO2","seen",0);
856 gMC->Gsatt("BTR3","seen",0); // BTR3 do not have sub-levels -
857 gMC->Gsatt("BTO3","seen",0);
859 // ==================> Level 3
860 // Level 3 of B071 / Level 2 of BTO1
861 gMC->Gsatt("FTOC","seen",-2);
862 gMC->Gsatt("FTOB","seen",-2);
863 gMC->Gsatt("FTOA","seen",-2);
865 // Level 3 of B074 / Level 2 of BTO2
866 // -> cfr previous settings
868 // Level 3 of B075 / Level 2 of BTO3
869 // -> cfr previous settings
871 gMC->Gdopt("hide","on");
872 gMC->Gdopt("shad","on");
873 gMC->Gsatt("*", "fill", 5);
874 gMC->SetClipBox(".");
875 gMC->SetClipBox("*", 0, 1000, 0, 1000, 0, 1000);
877 gMC->Gdraw("alic", 45, 40, 0, 10, 10, .015, .015);
878 gMC->Gdhead(1111,"TOF detector V1");
879 gMC->Gdman(18, 4, "MAN");
880 gMC->Gdopt("hide","off");
883 //_____________________________________________________________________________
884 void AliTOFv4::DrawDetectorStrips()
887 // Draw a shaded view of the TOF strips for version 4
890 //Set ALIC mother transparent
891 gMC->Gsatt("ALIC","SEEN",0);
894 //Set volumes visible
896 // Level 1 for TOF volumes
897 gMC->Gsatt("B077","seen",0);
899 //==========> Level 2
901 gMC->Gsatt("B076","seen",-1); // all B076 sub-levels skipped -
902 gMC->Gsatt("B071","seen",0);
903 gMC->Gsatt("B074","seen",0);
904 gMC->Gsatt("B075","seen",0);
905 gMC->Gsatt("B080","seen",0); // B080 does not has sub-level
908 gMC->Gsatt("B063","seen",-1); // all B063 sub-levels skipped -
909 gMC->Gsatt("B065","seen",-1); // all B065 sub-levels skipped -
910 gMC->Gsatt("B067","seen",-1); // all B067 sub-levels skipped -
911 gMC->Gsatt("B069","seen",-1); // all B069 sub-levels skipped -
912 gMC->Gsatt("B056","seen",0); // B056 does not has sub-levels -
913 gMC->Gsatt("B059","seen",-1); // all B059 sub-levels skipped -
914 gMC->Gsatt("B072","seen",-1); // all B072 sub-levels skipped -
915 gMC->Gsatt("BTR1","seen",0); // BTR1 do not have sub-levels -
916 gMC->Gsatt("BTO1","seen",0);
918 // ==================> Level 3
919 // Level 3 of B071 / Level 2 of BTO1
920 gMC->Gsatt("FTOC","seen",0);
921 gMC->Gsatt("FTOB","seen",0);
922 gMC->Gsatt("FTOA","seen",0);
924 // Level 3 of B074 / Level 2 of BTO2
925 // -> cfr previous settings
927 // Level 3 of B075 / Level 2 of BTO3
928 // -> cfr previous settings
931 // ==========================> Level 4
932 // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOC
933 gMC->Gsatt("FLTC","seen",0);
934 // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOB
935 gMC->Gsatt("FLTB","seen",0);
936 // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOA
937 gMC->Gsatt("FLTA","seen",0);
939 // Level 4 of B074 / Level 3 of BTO2 / Level 2 of FTOC
940 // -> cfr previous settings
941 // Level 4 of B074 / Level 3 of BTO2 / Level 2 of FTOB
942 // -> cfr previous settings
944 // Level 4 of B075 / Level 3 of BTO3 / Level 2 of FTOC
945 // -> cfr previous settings
947 //======================================> Level 5
948 // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOC / Level 2 of FLTC
949 gMC->Gsatt("FALC","seen",0); // no children for FALC
950 gMC->Gsatt("FSTR","seen",-2);
951 gMC->Gsatt("FPEC","seen",0); // no children for FPEC
952 gMC->Gsatt("FECC","seen",0); // no children for FECC
953 gMC->Gsatt("FWAC","seen",0); // no children for FWAC
954 gMC->Gsatt("FAIC","seen",0); // no children for FAIC
956 // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOB / Level 2 of FLTB
957 gMC->Gsatt("FALB","seen",0); // no children for FALB
958 //--> gMC->Gsatt("FSTR","seen",-2);
961 // -> cfr previous settings
962 gMC->Gsatt("FPEB","seen",0); // no children for FPEB
963 gMC->Gsatt("FECB","seen",0); // no children for FECB
964 gMC->Gsatt("FWAB","seen",0); // no children for FWAB
965 gMC->Gsatt("FAIB","seen",0); // no children for FAIB
967 // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOA / Level 2 of FLTA
968 gMC->Gsatt("FALA","seen",0); // no children for FALB
969 //--> gMC->Gsatt("FSTR","seen",-2);
970 // -> cfr previous settings
971 gMC->Gsatt("FPEA","seen",0); // no children for FPEA
972 gMC->Gsatt("FECA","seen",0); // no children for FECA
973 gMC->Gsatt("FWAA","seen",0); // no children for FWAA
974 gMC->Gsatt("FAIA","seen",0); // no children for FAIA
977 gMC->Gsatt("BTR2","seen",0); // BTR2 does not has sub-levels -
978 gMC->Gsatt("BTO2","seen",0);
981 gMC->Gsatt("BTR3","seen",0); // BTR3 do not have sub-levels -
982 gMC->Gsatt("BTO3","seen",0);
984 // for others Level 5, cfr. previous settings
986 gMC->Gdopt("hide","on");
987 gMC->Gdopt("shad","on");
988 gMC->Gsatt("*", "fill", 5);
989 gMC->SetClipBox(".");
990 gMC->SetClipBox("*", 0, 1000, 0, 1000, 0, 1000);
992 gMC->Gdraw("alic", 45, 40, 0, 10, 10, .015, .015);
993 gMC->Gdhead(1111,"TOF Strips V1");
994 gMC->Gdman(18, 4, "MAN");
995 gMC->Gdopt("hide","off");
998 //_____________________________________________________________________________
999 void AliTOFv4::CreateMaterials()
1002 // Define materials for the Time Of Flight
1004 AliTOF::CreateMaterials();
1007 //_____________________________________________________________________________
1008 void AliTOFv4::Init()
1011 // Initialise the detector after the geometry has been defined
1014 printf("%s: **************************************"
1016 "**************************************\n",ClassName());
1017 printf("\n%s: Version 4 of TOF initialing, "
1018 "symmetric TOF - Full Coverage version\n",ClassName());
1023 fIdFTOA = gMC->VolId("FTOA");
1024 fIdFTOB = gMC->VolId("FTOB");
1025 fIdFTOC = gMC->VolId("FTOC");
1026 fIdFLTA = gMC->VolId("FLTA");
1027 fIdFLTB = gMC->VolId("FLTB");
1028 fIdFLTC = gMC->VolId("FLTC");
1031 printf("%s: **************************************"
1033 "**************************************\n",ClassName());
1037 //_____________________________________________________________________________
1038 void AliTOFv4::StepManager()
1041 // Procedure called at each step in the Time Of Flight
1043 TLorentzVector mom, pos;
1044 Float_t xm[3],pm[3],xpad[3],ppad[3];
1045 Float_t hits[13],phi,phid,z;
1047 Int_t sector, plate, padx, padz, strip;
1048 Int_t copy, padzid, padxid, stripid, i;
1049 Int_t *idtmed = fIdtmed->GetArray()-499;
1050 Float_t incidenceAngle;
1052 if(gMC->GetMedium()==idtmed[513] &&
1053 gMC->IsTrackEntering() && gMC->TrackCharge()
1054 && gMC->CurrentVolID(copy)==fIdSens)
1056 // getting information about hit volumes
1058 padzid=gMC->CurrentVolOffID(2,copy);
1061 padxid=gMC->CurrentVolOffID(1,copy);
1064 stripid=gMC->CurrentVolOffID(4,copy);
1067 gMC->TrackPosition(pos);
1068 gMC->TrackMomentum(mom);
1070 // Double_t NormPos=1./pos.Rho();
1071 Double_t normMom=1./mom.Rho();
1073 // getting the cohordinates in pad ref system
1074 xm[0] = (Float_t)pos.X();
1075 xm[1] = (Float_t)pos.Y();
1076 xm[2] = (Float_t)pos.Z();
1078 pm[0] = (Float_t)mom.X()*normMom;
1079 pm[1] = (Float_t)mom.Y()*normMom;
1080 pm[2] = (Float_t)mom.Z()*normMom;
1082 gMC->Gmtod(xm,xpad,1);
1083 gMC->Gmtod(pm,ppad,2);
1085 incidenceAngle = TMath::ACos(ppad[1])*kRaddeg;
1090 if (TMath::Abs(z) <= fZlenA*0.5) plate = 3;
1091 if (z < (fZlenA*0.5+fZlenB) &&
1092 z > fZlenA*0.5) plate = 4;
1093 if (z >-(fZlenA*0.5+fZlenB) &&
1094 z < -fZlenA*0.5) plate = 2;
1095 if (z > (fZlenA*0.5+fZlenB)) plate = 5;
1096 if (z <-(fZlenA*0.5+fZlenB)) plate = 1;
1099 phid = phi*kRaddeg+180.;
1100 sector = Int_t (phid/20.);
1108 hits[6] = mom.Rho();
1113 hits[11]= incidenceAngle;
1114 hits[12]= gMC->Edep();
1122 AddHit(gAlice->GetCurrentTrackNumber(),vol, hits);