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 Revision 1.8 2000/12/04 08:48:20 alibrary
19 Fixing problems in the HEAD
21 Revision 1.7 2000/10/02 21:28:17 fca
22 Removal of useless dependecies via forward declarations
24 Revision 1.6 2000/05/10 16:52:18 vicinanz
25 New TOF version with holes for PHOS/RICH
27 Revision 1.4.2.1 2000/05/10 09:37:16 vicinanz
28 New version with Holes for PHOS/RICH
30 Revision 1.14 1999/11/05 22:39:06 fca
33 Revision 1.13 1999/11/02 11:26:39 fca
34 added stdlib.h for exit
36 Revision 1.12 1999/11/01 20:41:57 fca
37 Added protections against using the wrong version of FRAME
39 Revision 1.11 1999/10/22 08:04:14 fca
40 Correct improper use of negative parameters
42 Revision 1.10 1999/10/16 19:30:06 fca
43 Corrected Rotation Matrix and CVS log
45 Revision 1.9 1999/10/15 15:35:20 fca
46 New version for frame1099 with and without holes
48 Revision 1.8 1999/09/29 09:24:33 fca
49 Introduction of the Copyright and cvs Log
53 ///////////////////////////////////////////////////////////////////////////////
55 // Time Of Flight: design of C.Williams
57 // This class contains the functions for version 1 of the Time Of Flight //
60 // VERSION WITH 5 MODULES AND TILTED STRIPS
62 // FULL COVERAGE VERSION
69 // University of Salerno - Italy
72 // University of Bologna - Italy
77 <img src="picts/AliTOFv4Class.gif">
81 ///////////////////////////////////////////////////////////////////////////////
88 #include "TGeometry.h"
90 #include <TLorentzVector.h>
99 //_____________________________________________________________________________
103 // Default constructor
107 //_____________________________________________________________________________
108 AliTOFv4::AliTOFv4(const char *name, const char *title)
112 // Standard constructor
115 // Check that FRAME is there otherwise we have no place where to
117 AliModule* frame=gAlice->GetModule("FRAME");
119 Error("Ctor","TOF needs FRAME to be present\n");
122 if(frame->IsVersion()!=1) {
123 Error("Ctor","FRAME version 1 needed with this version of TOF\n");
129 //____________________________________________________________________________
130 AliTOFv4::~AliTOFv4()
154 //_____________________________________________________________________________
155 void AliTOFv4::BuildGeometry()
158 // Build TOF ROOT geometry for the ALICE event display
161 const int kColorTOF = 27;
164 top = gAlice->GetGeometry()->GetNode("alice");
166 // Position the different copies
167 const Float_t krTof =(fRmax+fRmin)/2;
168 const Float_t khTof = fRmax-fRmin;
169 const Int_t kNTof = fNTof;
170 const Float_t kPi = TMath::Pi();
171 const Float_t kangle = 2*kPi/kNTof;
174 // Define TOF basic volume
176 char nodeName0[7], nodeName1[7], nodeName2[7];
177 char nodeName3[7], nodeName4[7], rotMatNum[7];
179 new TBRIK("S_TOF_C","TOF box","void",
180 120*0.5,khTof*0.5,fZlenC*0.5);
181 new TBRIK("S_TOF_B","TOF box","void",
182 120*0.5,khTof*0.5,fZlenB*0.5);
183 new TBRIK("S_TOF_A","TOF box","void",
184 120*0.5,khTof*0.5,fZlenA*0.5);
186 for (Int_t nodeNum=1;nodeNum<19;nodeNum++){
189 sprintf(rotMatNum,"rot50%i",nodeNum);
190 sprintf(nodeName0,"FTO00%i",nodeNum);
191 sprintf(nodeName1,"FTO10%i",nodeNum);
192 sprintf(nodeName2,"FTO20%i",nodeNum);
193 sprintf(nodeName3,"FTO30%i",nodeNum);
194 sprintf(nodeName4,"FTO40%i",nodeNum);
197 sprintf(rotMatNum,"rot5%i",nodeNum);
198 sprintf(nodeName0,"FTO0%i",nodeNum);
199 sprintf(nodeName1,"FTO1%i",nodeNum);
200 sprintf(nodeName2,"FTO2%i",nodeNum);
201 sprintf(nodeName3,"FTO3%i",nodeNum);
202 sprintf(nodeName4,"FTO4%i",nodeNum);
205 new TRotMatrix(rotMatNum,rotMatNum,90,-20*nodeNum,90,90-20*nodeNum,0,0);
206 ang = (4.5-nodeNum) * kangle;
209 node = new TNode(nodeName0,nodeName0,"S_TOF_C",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),299.15,rotMatNum);
210 node->SetLineColor(kColorTOF);
214 node = new TNode(nodeName1,nodeName1,"S_TOF_C",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),-299.15,rotMatNum);
215 node->SetLineColor(kColorTOF);
219 node = new TNode(nodeName2,nodeName2,"S_TOF_B",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),146.45,rotMatNum);
220 node->SetLineColor(kColorTOF);
224 node = new TNode(nodeName3,nodeName3,"S_TOF_B",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),-146.45,rotMatNum);
225 node->SetLineColor(kColorTOF);
229 node = new TNode(nodeName4,nodeName4,"S_TOF_A",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),0.,rotMatNum);
230 node->SetLineColor(kColorTOF);
232 } // end loop on nodeNum
237 //_____________________________________________________________________________
238 void AliTOFv4::CreateGeometry()
241 // Create geometry for Time Of Flight version 0
245 <img src="picts/AliTOFv4.gif">
249 // Creates common geometry
251 AliTOF::CreateGeometry();
254 //_____________________________________________________________________________
255 void AliTOFv4::TOFpc(Float_t xtof, Float_t ytof, Float_t zlenC,
256 Float_t zlenB, Float_t zlenA, Float_t ztof0)
259 // Definition of the Time Of Fligh Resistive Plate Chambers
260 // xFLT, yFLT, zFLT - sizes of TOF modules (large)
262 Float_t ycoor, zcoor;
264 Int_t *idtmed = fIdtmed->GetArray()-499;
267 Float_t hTof = fRmax-fRmin;
269 Float_t radius = fRmin+2.;//cm
273 par[2] = zlenC * 0.5;
274 gMC->Gsvolu("FTOC", "BOX ", idtmed[506], par, 3);
275 par[2] = zlenB * 0.5;
276 gMC->Gsvolu("FTOB", "BOX ", idtmed[506], par, 3);
277 par[2] = zlenA * 0.5;
278 gMC->Gsvolu("FTOA", "BOX ", idtmed[506], par, 3);
281 // Positioning of modules
283 Float_t zcor1 = ztof0 - zlenC*0.5;
284 Float_t zcor2 = ztof0 - zlenC - zlenB*0.5;
287 AliMatrix(idrotm[0], 90., 0., 0., 0., 90,-90.);
288 AliMatrix(idrotm[1], 90.,180., 0., 0., 90, 90.);
289 gMC->Gspos("FTOC", 1, "BTO1", 0, zcor1, 0, idrotm[0], "ONLY");
290 gMC->Gspos("FTOC", 2, "BTO1", 0, -zcor1, 0, idrotm[1], "ONLY");
291 gMC->Gspos("FTOC", 1, "BTO2", 0, zcor1, 0, idrotm[0], "ONLY");
292 gMC->Gspos("FTOC", 2, "BTO2", 0, -zcor1, 0, idrotm[1], "ONLY");
293 gMC->Gspos("FTOC", 1, "BTO3", 0, zcor1, 0, idrotm[0], "ONLY");
294 gMC->Gspos("FTOC", 2, "BTO3", 0, -zcor1, 0, idrotm[1], "ONLY");
296 gMC->Gspos("FTOB", 1, "BTO1", 0, zcor2, 0, idrotm[0], "ONLY");
297 gMC->Gspos("FTOB", 2, "BTO1", 0, -zcor2, 0, idrotm[1], "ONLY");
298 gMC->Gspos("FTOB", 1, "BTO2", 0, zcor2, 0, idrotm[0], "ONLY");
299 gMC->Gspos("FTOB", 2, "BTO2", 0, -zcor2, 0, idrotm[1], "ONLY");
300 gMC->Gspos("FTOB", 1, "BTO3", 0, zcor2, 0, idrotm[0], "ONLY");
301 gMC->Gspos("FTOB", 2, "BTO3", 0, -zcor2, 0, idrotm[1], "ONLY");
303 gMC->Gspos("FTOA", 0, "BTO1", 0, zcor3, 0, idrotm[0], "ONLY");
304 gMC->Gspos("FTOA", 0, "BTO2", 0, zcor3, 0, idrotm[0], "ONLY");
305 gMC->Gspos("FTOA", 0, "BTO3", 0, zcor3, 0, idrotm[0], "ONLY");
307 Float_t db = 0.5;//cm
308 Float_t xFLT, xFST, yFLT, zFLTA, zFLTB, zFLTC;
316 xFST = xFLT-fDeadBndX*2;//cm
318 // Sizes of MRPC pads
320 Float_t yPad = 0.505;//cm
322 // Large not sensitive volumes with Insensitive Freon
326 cout <<"************************* TOF geometry **************************"<<endl;
328 par[2] = (zFLTA *0.5);
329 gMC->Gsvolu("FLTA", "BOX ", idtmed[512], par, 3); // Insensitive Freon
330 gMC->Gspos ("FLTA", 0, "FTOA", 0., 0., 0., 0, "ONLY");
332 par[2] = (zFLTB * 0.5);
333 gMC->Gsvolu("FLTB", "BOX ", idtmed[512], par, 3); // Insensitive Freon
334 gMC->Gspos ("FLTB", 0, "FTOB", 0., 0., 0., 0, "ONLY");
336 par[2] = (zFLTC * 0.5);
337 gMC->Gsvolu("FLTC", "BOX ", idtmed[512], par, 3); // Insensitive Freon
338 gMC->Gspos ("FLTC", 0, "FTOC", 0., 0., 0., 0, "ONLY");
340 ////////// Layers of Aluminum before and after detector //////////
341 ////////// Aluminum Box for Modules (2.0 mm thickness) /////////
342 ////////// lateral walls not simulated
345 ycoor = -yFLT/2 + par[1];
346 par[2] = (zFLTA *0.5);
347 gMC->Gsvolu("FALA", "BOX ", idtmed[508], par, 3); // Alluminium
348 gMC->Gspos ("FALA", 1, "FLTA", 0., ycoor, 0., 0, "ONLY");
349 gMC->Gspos ("FALA", 2, "FLTA", 0.,-ycoor, 0., 0, "ONLY");
350 par[2] = (zFLTB *0.5);
351 gMC->Gsvolu("FALB", "BOX ", idtmed[508], par, 3); // Alluminium
352 gMC->Gspos ("FALB", 1, "FLTB", 0., ycoor, 0., 0, "ONLY");
353 gMC->Gspos ("FALB", 2, "FLTB", 0.,-ycoor, 0., 0, "ONLY");
354 par[2] = (zFLTC *0.5);
355 gMC->Gsvolu("FALC", "BOX ", idtmed[508], par, 3); // Alluminium
356 gMC->Gspos ("FALC", 1, "FLTC", 0., ycoor, 0., 0, "ONLY");
357 gMC->Gspos ("FALC", 2, "FLTC", 0.,-ycoor, 0., 0, "ONLY");
359 ///////////////// Detector itself //////////////////////
361 const Float_t kdeadBound = fDeadBndZ; //cm non-sensitive between the pad edge
362 //and the boundary of the strip
363 const Int_t knx = fNpadX; // number of pads along x
364 const Int_t knz = fNpadZ; // number of pads along z
365 const Float_t kspace = fSpace; //cm distance from the front plate of the box
367 Float_t zSenStrip = fZpad*fNpadZ;//cm
368 Float_t stripWidth = zSenStrip + 2*kdeadBound;
372 par[2] = stripWidth*0.5;
374 // new description for strip volume
375 // -- all constants are expressed in cm
376 // heigth of different layers
377 const Float_t khhony = 1. ; // heigth of HONY Layer
378 const Float_t khpcby = 0.15 ; // heigth of PCB Layer
379 const Float_t khmyly = 0.035 ; // heigth of MYLAR Layer
380 const Float_t khgraphy = 0.02 ; // heigth of GRAPHITE Layer
381 const Float_t khglasseiy = 0.32; // 2.2 Ext. Glass + 1. Semi Int. Glass (mm)
382 const Float_t khsensmy = 0.11 ; // heigth of Sensitive Freon Mixture
383 const Float_t kwsensmz = 2*3.5 ; // cm
384 const Float_t klsensmx = 48*2.5; // cm
385 const Float_t kwpadz = 3.5; // cm z dimension of the FPAD volume
386 const Float_t klpadx = 2.5; // cm x dimension of the FPAD volume
388 // heigth of the FSTR Volume (the strip volume)
389 const Float_t khstripy = 2*(khhony+khpcby+khmyly+khgraphy+khglasseiy)+khsensmy;
390 // width of the FSTR Volume (the strip volume)
391 const Float_t kwstripz = 10.;
392 // length of the FSTR Volume (the strip volume)
393 const Float_t klstripx = 122.;
395 Float_t parfp[3]={klstripx*0.5,khstripy*0.5,kwstripz*0.5};
396 // coordinates of the strip center in the strip reference frame; used for positioning
397 // internal strip volumes
398 Float_t posfp[3]={0.,0.,0.};
400 // FSTR volume definition and filling this volume with non sensitive Gas Mixture
401 gMC->Gsvolu("FSTR","BOX",idtmed[512],parfp,3);
402 //-- HONY Layer definition
404 parfp[1] = khhony*0.5;
406 gMC->Gsvolu("FHON","BOX",idtmed[503],parfp,3);
407 // positioning 2 HONY Layers on FSTR volume
408 posfp[1]=-khstripy*0.5+parfp[1];
409 gMC->Gspos("FHON",1,"FSTR",0., posfp[1],0.,0,"ONLY");
410 gMC->Gspos("FHON",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
412 //-- PCB Layer definition
413 parfp[1] = khpcby*0.5;
414 gMC->Gsvolu("FPCB","BOX",idtmed[504],parfp,3);
415 // positioning 2 PCB Layers on FSTR volume
416 posfp[1]=-khstripy*0.5+khhony+parfp[1];
417 gMC->Gspos("FPCB",1,"FSTR",0., posfp[1],0.,0,"ONLY");
418 gMC->Gspos("FPCB",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
420 //-- MYLAR Layer definition
421 parfp[1] = khmyly*0.5;
422 gMC->Gsvolu("FMYL","BOX",idtmed[511],parfp,3);
423 // positioning 2 MYLAR Layers on FSTR volume
424 posfp[1] = -khstripy*0.5+khhony+khpcby+parfp[1];
425 gMC->Gspos("FMYL",1,"FSTR",0., posfp[1],0.,0,"ONLY");
426 gMC->Gspos("FMYL",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
428 //-- Graphite Layer definition
429 parfp[1] = khgraphy*0.5;
430 gMC->Gsvolu("FGRP","BOX",idtmed[502],parfp,3);
431 // positioning 2 Graphite Layers on FSTR volume
432 posfp[1] = -khstripy*0.5+khhony+khpcby+khmyly+parfp[1];
433 gMC->Gspos("FGRP",1,"FSTR",0., posfp[1],0.,0,"ONLY");
434 gMC->Gspos("FGRP",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
436 //-- Glass (EXT. +Semi INT.) Layer definition
437 parfp[1] = khglasseiy*0.5;
438 gMC->Gsvolu("FGLA","BOX",idtmed[514],parfp,3);
439 // positioning 2 Glass Layers on FSTR volume
440 posfp[1] = -khstripy*0.5+khhony+khpcby+khmyly+khgraphy+parfp[1];
441 gMC->Gspos("FGLA",1,"FSTR",0., posfp[1],0.,0,"ONLY");
442 gMC->Gspos("FGLA",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
444 //-- Sensitive Mixture Layer definition
445 parfp[0] = klsensmx*0.5;
446 parfp[1] = khsensmy*0.5;
447 parfp[2] = kwsensmz*0.5;
448 gMC->Gsvolu("FSEN","BOX",idtmed[513],parfp,3);
449 // positioning the sensitive gas Layer on FSTR volume
450 gMC->Gspos("FSEN",0,"FSTR",0.,0.,0.,0,"ONLY");
452 // dividing FSEN along z in knz=2 and along x in knx=48
453 gMC->Gsdvn("FSEZ","FSEN",knz,3);
454 gMC->Gsdvn("FSEX","FSEZ",knx,1);
456 // FPAD volume definition
457 parfp[0] = klpadx*0.5;
458 parfp[1] = khsensmy*0.5;
459 parfp[2] = kwpadz*0.5;
460 gMC->Gsvolu("FPAD","BOX",idtmed[513],parfp,3);
461 // positioning the FPAD volumes on previous divisions
462 gMC->Gspos("FPAD",0,"FSEX",0.,0.,0.,0,"ONLY");
464 //// Positioning the Strips (FSTR) in the FLT volumes /////
468 Float_t t = zFLTC+zFLTB+zFLTA*0.5+ 2*db;//Half Width of Barrel
470 Float_t gap = fGapA; //cm distance between the strip axis
476 ycoor = -14.5 + kspace ; //2 cm over front plate
478 AliMatrix (idrotm[0], 90., 0.,90.,90.,0., 90.);
479 gMC->Gspos("FSTR",j,"FLTA",0.,ycoor, 0.,idrotm[0],"ONLY");
481 printf("%f, St. %2i, Pl.3 ",ang*kRaddeg,i);
482 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
486 Int_t upDown = -1; // upDown=-1 -> Upper strip
487 // upDown=+1 -> Lower strip
489 ang = atan(zcoor/radius);
491 AliMatrix (idrotm[nrot], 90., 0.,90.-ang,90.,-ang, 90.);
492 AliMatrix (idrotm[nrot+1],90.,180.,90.+ang,90., ang, 90.);
494 ycoor = -14.5+ kspace; //2 cm over front plate
495 ycoor += (1-(upDown+1)/2)*gap;
496 gMC->Gspos("FSTR",j ,"FLTA",0.,ycoor, zcoor,idrotm[nrot], "ONLY");
497 gMC->Gspos("FSTR",j+1,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY");
499 printf("%f, St. %2i, Pl.3 ",ang*kRaddeg,i);
500 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
503 upDown*= -1; // Alternate strips
504 zcoor = zcoor-(zSenStrip/2)/TMath::Cos(ang)-
505 upDown*gap*TMath::Tan(ang)-
506 (zSenStrip/2)/TMath::Cos(ang);
507 } while (zcoor-(stripWidth/2)*TMath::Cos(ang)>-t+zFLTC+zFLTB+db*2);
509 zcoor = zcoor+(zSenStrip/2)/TMath::Cos(ang)+
510 upDown*gap*TMath::Tan(ang)+
511 (zSenStrip/2)/TMath::Cos(ang);
514 zcoor = zcoor-(zSenStrip/2)/TMath::Cos(ang)-
515 upDown*gap*TMath::Tan(ang)-
516 (zSenStrip/2)/TMath::Cos(ang);
518 ang = atan(zcoor/radius);
520 AliMatrix (idrotm[nrot], 90., 0.,90.-ang,90.,-ang, 90.);
521 AliMatrix (idrotm[nrot+1],90.,180.,90.+ang,90., ang, 90.);
524 ycoor = -14.5+ kspace; //2 cm over front plate
525 ycoor += (1-(upDown+1)/2)*gap;
526 gMC->Gspos("FSTR",j ,"FLTA",0.,ycoor, zcoor,idrotm[nrot], "ONLY");
527 gMC->Gspos("FSTR",j+1,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY");
529 printf("%f, St. %2i, Pl.3 ",ang*kRaddeg,i);
530 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
532 ycoor = -hTof/2.+ kspace;//2 cm over front plate
539 Float_t deadRegion = 1.0;//cm
541 zpos = zcoor - (zSenStrip/2)/TMath::Cos(ang)-
542 upDown*gap*TMath::Tan(ang)-
543 (zSenStrip/2)/TMath::Cos(ang)-
544 deadRegion/TMath::Cos(ang);
546 ang = atan(zpos/radius);
548 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
550 ycoor = -hTof*0.5+ kspace ; //2 cm over front plate
551 ycoor += (1-(upDown+1)/2)*gap;
552 zcoor = zpos+(zFLTA*0.5+zFLTB*0.5+db); // Moves to the system of the modulus FLTB
553 gMC->Gspos("FSTR",i, "FLTB", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
555 printf("%f, St. %2i, Pl.4 ",ang*kRaddeg,i);
556 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
562 zpos = zpos - (zSenStrip/2)/TMath::Cos(ang)-
563 upDown*gap*TMath::Tan(ang)-
564 (zSenStrip/2)/TMath::Cos(ang);
565 ang = atan(zpos/radius);
567 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
569 ycoor = -hTof*0.5+ kspace ; //2 cm over front plate
570 ycoor += (1-(upDown+1)/2)*gap;
571 zcoor = zpos+(zFLTA*0.5+zFLTB*0.5+db); // Moves to the system of the modulus FLTB
572 gMC->Gspos("FSTR",i, "FLTB", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
574 printf("%f, St. %2i, Pl.4 ",ang*kRaddeg,i);
575 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
579 } while (TMath::Abs(ang*kRaddeg)<22.5);
580 //till we reach a tilting angle of 22.5 degrees
582 ycoor = -hTof*0.5+ kspace ; //2 cm over front plate
583 zpos = zpos - zSenStrip/TMath::Cos(ang);
586 ang = atan(zpos/radius);
588 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
590 zcoor = zpos+(zFLTB/2+zFLTA/2+db);
591 gMC->Gspos("FSTR",i, "FLTB", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
592 zpos = zpos - zSenStrip/TMath::Cos(ang);
593 printf("%f, St. %2i, Pl.4 ",ang*kRaddeg,i);
594 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
597 } while (zpos-stripWidth*0.5/TMath::Cos(ang)>-t+zFLTC+db);
601 zpos = zpos + zSenStrip/TMath::Cos(ang);
603 zpos = zpos - (zSenStrip/2)/TMath::Cos(ang)+
605 (zSenStrip/2)/TMath::Cos(ang);
609 ycoor= -hTof*0.5+kspace+gap;
613 ang = atan(zpos/radius);
615 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
617 zcoor = zpos+(zFLTC*0.5+zFLTB+zFLTA*0.5+db*2);
618 gMC->Gspos("FSTR",i, "FLTC", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
620 printf("%f, St. %2i, Pl.5 ",ang*kRaddeg,i);
621 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
623 zpos = zpos - zSenStrip/TMath::Cos(ang);
624 } while (zpos-stripWidth*TMath::Cos(ang)*0.5>-t);
627 ////////// Layers after strips /////////////////
628 // honeycomb (Polyethilene) Layer after (1.2cm)
630 Float_t overSpace = fOverSpc;//cm
634 par[2] = (zFLTA *0.5);
635 ycoor = -yFLT/2 + overSpace + par[1];
636 gMC->Gsvolu("FPEA", "BOX ", idtmed[503], par, 3); // Hony
637 gMC->Gspos ("FPEA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
638 par[2] = (zFLTB *0.5);
639 gMC->Gsvolu("FPEB", "BOX ", idtmed[503], par, 3); // Hony
640 gMC->Gspos ("FPEB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
641 par[2] = (zFLTC *0.5);
642 gMC->Gsvolu("FPEC", "BOX ", idtmed[503], par, 3); // Hony
643 gMC->Gspos ("FPEC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
645 // Electronics (Cu) after
648 par[1] = 1.43*0.05*0.5; // 5% of X0
649 par[2] = (zFLTA *0.5);
651 gMC->Gsvolu("FECA", "BOX ", idtmed[501], par, 3); // Cu
652 gMC->Gspos ("FECA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
653 par[2] = (zFLTB *0.5);
654 gMC->Gsvolu("FECB", "BOX ", idtmed[501], par, 3); // Cu
655 gMC->Gspos ("FECB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
656 par[2] = (zFLTC *0.5);
657 gMC->Gsvolu("FECC", "BOX ", idtmed[501], par, 3); // Cu
658 gMC->Gspos ("FECC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
660 // cooling WAter after
663 par[1] = 36.1*0.02*0.5; // 2% of X0
664 par[2] = (zFLTA *0.5);
666 gMC->Gsvolu("FWAA", "BOX ", idtmed[515], par, 3); // Water
667 gMC->Gspos ("FWAA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
668 par[2] = (zFLTB *0.5);
669 gMC->Gsvolu("FWAB", "BOX ", idtmed[515], par, 3); // Water
670 gMC->Gspos ("FWAB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
671 par[2] = (zFLTC *0.5);
672 gMC->Gsvolu("FWAC", "BOX ", idtmed[515], par, 3); // Water
673 gMC->Gspos ("FWAC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
678 par[1] = (yFLT/2-ycoor-0.2)*0.5; // Aluminum layer considered (0.2 cm)
679 par[2] = (zFLTA *0.5);
681 gMC->Gsvolu("FAIA", "BOX ", idtmed[500], par, 3); // Air
682 gMC->Gspos ("FAIA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
683 par[2] = (zFLTB *0.5);
684 gMC->Gsvolu("FAIB", "BOX ", idtmed[500], par, 3); // Air
685 gMC->Gspos ("FAIB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
686 par[2] = (zFLTC *0.5);
687 gMC->Gsvolu("FAIC", "BOX ", idtmed[500], par, 3); // Air
688 gMC->Gspos ("FAIC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
690 //Back Plate honycomb (2cm)
694 ycoor = yFLT/2 - par[1];
695 gMC->Gsvolu("FBPA", "BOX ", idtmed[503], par, 3); // Hony
696 gMC->Gspos ("FBPA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
697 gMC->Gsvolu("FBPB", "BOX ", idtmed[503], par, 3); // Hony
698 gMC->Gspos ("FBPB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
699 gMC->Gsvolu("FBPC", "BOX ", idtmed[503], par, 3); // Hony
700 gMC->Gspos ("FBPC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
704 //_____________________________________________________________________________
705 void AliTOFv4::DrawModule()
708 // Draw a shaded view of the Time Of Flight version 1
710 // Set everything unseen
711 gMC->Gsatt("*", "seen", -1);
713 // Set ALIC mother transparent
714 gMC->Gsatt("ALIC","SEEN",0);
716 // Set the volumes visible
717 gMC->Gsatt("ALIC","SEEN",0);
719 gMC->Gsatt("FTOA","SEEN",1);
720 gMC->Gsatt("FTOB","SEEN",1);
721 gMC->Gsatt("FTOC","SEEN",1);
722 gMC->Gsatt("FLTA","SEEN",1);
723 gMC->Gsatt("FLTB","SEEN",1);
724 gMC->Gsatt("FLTC","SEEN",1);
725 gMC->Gsatt("FPLA","SEEN",1);
726 gMC->Gsatt("FPLB","SEEN",1);
727 gMC->Gsatt("FPLC","SEEN",1);
728 gMC->Gsatt("FSTR","SEEN",1);
729 gMC->Gsatt("FPEA","SEEN",1);
730 gMC->Gsatt("FPEB","SEEN",1);
731 gMC->Gsatt("FPEC","SEEN",1);
733 gMC->Gsatt("FLZ1","SEEN",0);
734 gMC->Gsatt("FLZ2","SEEN",0);
735 gMC->Gsatt("FLZ3","SEEN",0);
736 gMC->Gsatt("FLX1","SEEN",0);
737 gMC->Gsatt("FLX2","SEEN",0);
738 gMC->Gsatt("FLX3","SEEN",0);
739 gMC->Gsatt("FPAD","SEEN",0);
741 gMC->Gdopt("hide", "on");
742 gMC->Gdopt("shad", "on");
743 gMC->Gsatt("*", "fill", 7);
744 gMC->SetClipBox(".");
745 gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
747 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .02, .02);
748 gMC->Gdhead(1111, "Time Of Flight");
749 gMC->Gdman(18, 4, "MAN");
750 gMC->Gdopt("hide","off");
753 //_____________________________________________________________________________
754 void AliTOFv4::CreateMaterials()
757 // Define materials for the Time Of Flight
759 AliTOF::CreateMaterials();
762 //_____________________________________________________________________________
763 void AliTOFv4::Init()
766 // Initialise the detector after the geometry has been defined
768 printf("**************************************"
770 "**************************************\n");
771 printf("\n Version 4 of TOF initialing, "
772 "symmetric TOF - Full Coverage version\n");
776 fIdFTOA = gMC->VolId("FTOA");
777 fIdFTOB = gMC->VolId("FTOB");
778 fIdFTOC = gMC->VolId("FTOC");
779 fIdFLTA = gMC->VolId("FLTA");
780 fIdFLTB = gMC->VolId("FLTB");
781 fIdFLTC = gMC->VolId("FLTC");
783 printf("**************************************"
785 "**************************************\n");
788 //_____________________________________________________________________________
789 void AliTOFv4::StepManager()
792 // Procedure called at each step in the Time Of Flight
794 TLorentzVector mom, pos;
795 Float_t xm[3],pm[3],xpad[3],ppad[3];
796 Float_t hits[13],phi,phid,z;
798 Int_t sector, plate, padx, padz, strip;
799 Int_t copy, padzid, padxid, stripid, i;
800 Int_t *idtmed = fIdtmed->GetArray()-499;
801 Float_t incidenceAngle;
803 if(gMC->GetMedium()==idtmed[513] &&
804 gMC->IsTrackEntering() && gMC->TrackCharge()
805 && gMC->CurrentVolID(copy)==fIdSens)
807 // getting information about hit volumes
809 padzid=gMC->CurrentVolOffID(2,copy);
812 padxid=gMC->CurrentVolOffID(1,copy);
815 stripid=gMC->CurrentVolOffID(4,copy);
818 gMC->TrackPosition(pos);
819 gMC->TrackMomentum(mom);
821 // Double_t NormPos=1./pos.Rho();
822 Double_t normMom=1./mom.Rho();
824 // getting the cohordinates in pad ref system
825 xm[0] = (Float_t)pos.X();
826 xm[1] = (Float_t)pos.Y();
827 xm[2] = (Float_t)pos.Z();
829 pm[0] = (Float_t)mom.X()*normMom;
830 pm[1] = (Float_t)mom.Y()*normMom;
831 pm[2] = (Float_t)mom.Z()*normMom;
833 gMC->Gmtod(xm,xpad,1);
834 gMC->Gmtod(pm,ppad,2);
836 incidenceAngle = TMath::ACos(ppad[1])*kRaddeg;
841 if (TMath::Abs(z) <= fZlenA*0.5) plate = 3;
842 if (z < (fZlenA*0.5+fZlenB) &&
843 z > fZlenA*0.5) plate = 4;
844 if (z >-(fZlenA*0.5+fZlenB) &&
845 z < -fZlenA*0.5) plate = 2;
846 if (z > (fZlenA*0.5+fZlenB)) plate = 5;
847 if (z <-(fZlenA*0.5+fZlenB)) plate = 1;
850 phid = phi*kRaddeg+180.;
851 sector = Int_t (phid/20.);
864 hits[11]= incidenceAngle;
865 hits[12]= gMC->Edep();
873 AddHit(gAlice->CurrentTrack(),vol, hits);