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 //
28 // Fabrizio Pierella //
29 // University of Bologna - Italy //
34 <img src="picts/AliTOFv4T0Class.gif"> //
38 ///////////////////////////////////////////////////////////////////////////////
40 #include <Riostream.h>
42 #include "TVirtualMC.h"
45 #include <TGeometry.h>
46 #include <TLorentzVector.h>
49 #include <TVirtualMC.h>
53 #include "AliTOFv4T0.h"
54 #include "AliTOFConstants.h" // AdC
59 //_____________________________________________________________________________
60 AliTOFv4T0::AliTOFv4T0()
63 // Default constructor
67 //_____________________________________________________________________________
68 AliTOFv4T0::AliTOFv4T0(const char *name, const char *title)
69 : AliTOF(name,title,"tzero")
72 // Standard constructor
75 // Check that FRAME is there otherwise we have no place where to
77 AliModule* frame=gAlice->GetModule("FRAME");
79 Error("Ctor","TOF needs FRAME to be present\n");
82 if(frame->IsVersion()!=1) {
83 Error("Ctor","FRAME version 1 needed with this version of TOF\n");
89 //____________________________________________________________________________
91 void AliTOFv4T0::BuildGeometry()
94 // Build TOF ROOT geometry for the ALICE event display
97 const int kColorTOF = 27;
100 top = gAlice->GetGeometry()->GetNode("alice");
102 // Position the different copies
103 const Float_t krTof =(fRmax+fRmin)/2;
104 const Float_t khTof = fRmax-fRmin;
105 const Int_t kNTof = fNTof;
106 const Float_t kPi = TMath::Pi();
107 const Float_t kangle = 2*kPi/kNTof;
110 // define offset for nodes
111 Float_t zOffsetC = fZtof - fZlenC*0.5;
112 Float_t zOffsetB = fZtof - fZlenC - fZlenB*0.5;
113 Float_t zOffsetA = 0.;
114 // Define TOF basic volume
116 char nodeName0[7], nodeName1[7], nodeName2[7];
117 char nodeName3[7], nodeName4[7], rotMatNum[7];
119 new TBRIK("S_TOF_C","TOF box","void",
120 fStripLn*0.5,khTof*0.5,fZlenC*0.5);
121 new TBRIK("S_TOF_B","TOF box","void",
122 fStripLn*0.5,khTof*0.5,fZlenB*0.5);
123 new TBRIK("S_TOF_A","TOF box","void",
124 fStripLn*0.5,khTof*0.5,fZlenA*0.5);
126 for (Int_t nodeNum=1;nodeNum<19;nodeNum++){
129 sprintf(rotMatNum,"rot50%i",nodeNum);
130 sprintf(nodeName0,"FTO00%i",nodeNum);
131 sprintf(nodeName1,"FTO10%i",nodeNum);
132 sprintf(nodeName2,"FTO20%i",nodeNum);
133 sprintf(nodeName3,"FTO30%i",nodeNum);
134 sprintf(nodeName4,"FTO40%i",nodeNum);
137 sprintf(rotMatNum,"rot5%i",nodeNum);
138 sprintf(nodeName0,"FTO0%i",nodeNum);
139 sprintf(nodeName1,"FTO1%i",nodeNum);
140 sprintf(nodeName2,"FTO2%i",nodeNum);
141 sprintf(nodeName3,"FTO3%i",nodeNum);
142 sprintf(nodeName4,"FTO4%i",nodeNum);
145 new TRotMatrix(rotMatNum,rotMatNum,90,-20*nodeNum,90,90-20*nodeNum,0,0);
146 ang = (4.5-nodeNum) * kangle;
149 node = new TNode(nodeName0,nodeName0,"S_TOF_C",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),zOffsetC,rotMatNum);
150 node->SetLineColor(kColorTOF);
154 node = new TNode(nodeName1,nodeName1,"S_TOF_C",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),-zOffsetC,rotMatNum);
155 node->SetLineColor(kColorTOF);
159 node = new TNode(nodeName2,nodeName2,"S_TOF_B",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),zOffsetB,rotMatNum);
160 node->SetLineColor(kColorTOF);
164 node = new TNode(nodeName3,nodeName3,"S_TOF_B",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),-zOffsetB,rotMatNum);
165 node->SetLineColor(kColorTOF);
169 node = new TNode(nodeName4,nodeName4,"S_TOF_A",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),zOffsetA,rotMatNum);
170 node->SetLineColor(kColorTOF);
172 } // end loop on nodeNum
177 //_____________________________________________________________________________
178 void AliTOFv4T0::CreateGeometry()
181 // Create geometry for Time Of Flight version 0
185 <img src="picts/AliTOFv4T0.gif">
189 // Creates common geometry
191 AliTOF::CreateGeometry();
194 //_____________________________________________________________________________
195 void AliTOFv4T0::TOFpc(Float_t xtof, Float_t ytof, Float_t zlenC,
196 Float_t zlenB, Float_t zlenA, Float_t ztof0)
199 // Definition of the Time Of Fligh Resistive Plate Chambers
200 // xFLT, yFLT, zFLT - sizes of TOF modules (large)
202 Float_t ycoor, zcoor;
204 Int_t *idtmed = fIdtmed->GetArray()-499;
207 Float_t hTof = fRmax-fRmin;
209 Float_t radius = fRmin+2.;//cm
213 par[2] = zlenC * 0.5;
214 gMC->Gsvolu("FTOC", "BOX ", idtmed[506], par, 3);
215 par[2] = zlenB * 0.5;
216 gMC->Gsvolu("FTOB", "BOX ", idtmed[506], par, 3);
217 par[2] = zlenA * 0.5;
218 gMC->Gsvolu("FTOA", "BOX ", idtmed[506], par, 3);
221 // Positioning of modules
223 Float_t zcor1 = ztof0 - zlenC*0.5;
224 Float_t zcor2 = ztof0 - zlenC - zlenB*0.5;
227 AliMatrix(idrotm[0], 90., 0., 0., 0., 90,-90.);
228 AliMatrix(idrotm[1], 90.,180., 0., 0., 90, 90.);
229 gMC->Gspos("FTOC", 1, "BTO1", 0, zcor1, 0, idrotm[0], "ONLY");
230 gMC->Gspos("FTOC", 2, "BTO1", 0, -zcor1, 0, idrotm[1], "ONLY");
231 gMC->Gspos("FTOC", 1, "BTO2", 0, zcor1, 0, idrotm[0], "ONLY");
232 gMC->Gspos("FTOC", 2, "BTO2", 0, -zcor1, 0, idrotm[1], "ONLY");
233 gMC->Gspos("FTOC", 1, "BTO3", 0, zcor1, 0, idrotm[0], "ONLY");
234 gMC->Gspos("FTOC", 2, "BTO3", 0, -zcor1, 0, idrotm[1], "ONLY");
236 gMC->Gspos("FTOB", 1, "BTO1", 0, zcor2, 0, idrotm[0], "ONLY");
237 gMC->Gspos("FTOB", 2, "BTO1", 0, -zcor2, 0, idrotm[1], "ONLY");
238 gMC->Gspos("FTOB", 1, "BTO2", 0, zcor2, 0, idrotm[0], "ONLY");
239 gMC->Gspos("FTOB", 2, "BTO2", 0, -zcor2, 0, idrotm[1], "ONLY");
240 gMC->Gspos("FTOB", 1, "BTO3", 0, zcor2, 0, idrotm[0], "ONLY");
241 gMC->Gspos("FTOB", 2, "BTO3", 0, -zcor2, 0, idrotm[1], "ONLY");
243 gMC->Gspos("FTOA", 0, "BTO1", 0, zcor3, 0, idrotm[0], "ONLY");
244 gMC->Gspos("FTOA", 0, "BTO2", 0, zcor3, 0, idrotm[0], "ONLY");
245 gMC->Gspos("FTOA", 0, "BTO3", 0, zcor3, 0, idrotm[0], "ONLY");
247 Float_t db = 0.5;//cm
248 Float_t xFLT, xFST, yFLT, zFLTA, zFLTB, zFLTC;
256 xFST = xFLT-fDeadBndX*2;//cm
258 // Sizes of MRPC pads
260 Float_t yPad = 0.505;//cm
262 // Large not sensitive volumes with Insensitive Freon
266 if (fDebug) cout << ClassName() <<
267 ": ************************* TOF geometry **************************"<<endl;
269 par[2] = (zFLTA *0.5);
270 gMC->Gsvolu("FLTA", "BOX ", idtmed[512], par, 3); // Insensitive Freon
271 gMC->Gspos ("FLTA", 0, "FTOA", 0., 0., 0., 0, "ONLY");
273 par[2] = (zFLTB * 0.5);
274 gMC->Gsvolu("FLTB", "BOX ", idtmed[512], par, 3); // Insensitive Freon
275 gMC->Gspos ("FLTB", 0, "FTOB", 0., 0., 0., 0, "ONLY");
277 par[2] = (zFLTC * 0.5);
278 gMC->Gsvolu("FLTC", "BOX ", idtmed[512], par, 3); // Insensitive Freon
279 gMC->Gspos ("FLTC", 0, "FTOC", 0., 0., 0., 0, "ONLY");
281 ///// Layers of Aluminum before and after detector /////
282 ///// Aluminum Box for Modules (1.8 mm thickness) /////
283 ///// lateral walls not simulated for the time being
284 //const Float_t khAlWall = 0.18;
286 const Float_t khAlWall = 0.11;
288 par[1] = khAlWall/2.;//cm
289 ycoor = -yFLT/2 + par[1];
290 par[2] = (zFLTA *0.5);
291 gMC->Gsvolu("FALA", "BOX ", idtmed[508], par, 3); // Alluminium
292 gMC->Gspos ("FALA", 1, "FLTA", 0., ycoor, 0., 0, "ONLY");
293 gMC->Gspos ("FALA", 2, "FLTA", 0.,-ycoor, 0., 0, "ONLY");
294 par[2] = (zFLTB *0.5);
295 gMC->Gsvolu("FALB", "BOX ", idtmed[508], par, 3); // Alluminium
296 gMC->Gspos ("FALB", 1, "FLTB", 0., ycoor, 0., 0, "ONLY");
297 gMC->Gspos ("FALB", 2, "FLTB", 0.,-ycoor, 0., 0, "ONLY");
298 par[2] = (zFLTC *0.5);
299 gMC->Gsvolu("FALC", "BOX ", idtmed[508], par, 3); // Alluminium
300 gMC->Gspos ("FALC", 1, "FLTC", 0., ycoor, 0., 0, "ONLY");
301 gMC->Gspos ("FALC", 2, "FLTC", 0.,-ycoor, 0., 0, "ONLY");
303 ///////////////// Detector itself //////////////////////
305 const Float_t kdeadBound = fDeadBndZ; //cm non-sensitive between the pad edge
306 //and the boundary of the strip
307 const Int_t knx = fNpadX; // number of pads along x
308 const Int_t knz = fNpadZ; // number of pads along z
309 const Float_t kspace = fSpace; //cm distance from the front plate of the box
311 Float_t zSenStrip = fZpad*fNpadZ;//cm
312 Float_t stripWidth = zSenStrip + 2*kdeadBound;
316 par[2] = stripWidth*0.5;
318 // new description for strip volume -double stack strip-
319 // -- all constants are expressed in cm
320 // heigth of different layers
321 const Float_t khhony = 0.8 ; // heigth of HONY Layer
322 const Float_t khpcby = 0.08 ; // heigth of PCB Layer
323 const Float_t khmyly = 0.035 ; // heigth of MYLAR Layer
324 const Float_t khgraphy = 0.02 ; // heigth of GRAPHITE Layer
325 const Float_t khglasseiy = 0.135; // 0.6 Ext. Glass + 1.1 i.e. (Int. Glass/2) (mm)
326 const Float_t khsensmy = 0.11 ; // heigth of Sensitive Freon Mixture
327 const Float_t kwsensmz = 2*3.5 ; // cm
328 const Float_t klsensmx = 48*2.5; // cm
329 const Float_t kwpadz = 3.5; // cm z dimension of the FPAD volume
330 const Float_t klpadx = 2.5; // cm x dimension of the FPAD volume
332 // heigth of the FSTR Volume (the strip volume)
333 const Float_t khstripy = 2*khhony+3*khpcby+4*(khmyly+khgraphy+khglasseiy)+2*khsensmy;
334 // width of the FSTR Volume (the strip volume)
335 const Float_t kwstripz = 10.;
336 // length of the FSTR Volume (the strip volume)
337 const Float_t klstripx = 122.;
339 Float_t parfp[3]={klstripx*0.5,khstripy*0.5,kwstripz*0.5};
340 // coordinates of the strip center in the strip reference frame; used for positioning
341 // internal strip volumes
342 Float_t posfp[3]={0.,0.,0.};
345 // FSTR volume definition and filling this volume with non sensitive Gas Mixture
346 gMC->Gsvolu("FSTR","BOX",idtmed[512],parfp,3);
347 //-- HONY Layer definition
349 parfp[1] = khhony*0.5;
351 gMC->Gsvolu("FHON","BOX",idtmed[503],parfp,3);
352 // positioning 2 HONY Layers on FSTR volume
354 posfp[1]=-khstripy*0.5+parfp[1];
355 gMC->Gspos("FHON",1,"FSTR",0., posfp[1],0.,0,"ONLY");
356 gMC->Gspos("FHON",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
358 //-- PCB Layer definition
359 parfp[1] = khpcby*0.5;
360 gMC->Gsvolu("FPCB","BOX",idtmed[504],parfp,3);
361 // positioning 2 PCB Layers on FSTR volume
362 posfp[1]=-khstripy*0.5+khhony+parfp[1];
363 gMC->Gspos("FPCB",1,"FSTR",0., posfp[1],0.,0,"ONLY");
364 gMC->Gspos("FPCB",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
365 // positioning the central PCB layer
366 gMC->Gspos("FPCB",3,"FSTR",0.,0.,0.,0,"ONLY");
370 //-- MYLAR Layer definition
371 parfp[1] = khmyly*0.5;
372 gMC->Gsvolu("FMYL","BOX",idtmed[511],parfp,3);
373 // positioning 2 MYLAR Layers on FSTR volume
374 posfp[1] = -khstripy*0.5+khhony+khpcby+parfp[1];
375 gMC->Gspos("FMYL",1,"FSTR",0., posfp[1],0.,0,"ONLY");
376 gMC->Gspos("FMYL",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
377 // adding further 2 MYLAR Layers on FSTR volume
378 posfp[1] = khpcby*0.5+parfp[1];
379 gMC->Gspos("FMYL",3,"FSTR",0., posfp[1],0.,0,"ONLY");
380 gMC->Gspos("FMYL",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
383 //-- Graphite Layer definition
384 parfp[1] = khgraphy*0.5;
385 gMC->Gsvolu("FGRP","BOX",idtmed[502],parfp,3);
386 // positioning 2 Graphite Layers on FSTR volume
387 posfp[1] = -khstripy*0.5+khhony+khpcby+khmyly+parfp[1];
388 gMC->Gspos("FGRP",1,"FSTR",0., posfp[1],0.,0,"ONLY");
389 gMC->Gspos("FGRP",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
390 // adding further 2 Graphite Layers on FSTR volume
391 posfp[1] = khpcby*0.5+khmyly+parfp[1];
392 gMC->Gspos("FGRP",3,"FSTR",0., posfp[1],0.,0,"ONLY");
393 gMC->Gspos("FGRP",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
396 //-- Glass (EXT. +Semi INT.) Layer definition
397 parfp[1] = khglasseiy*0.5;
398 gMC->Gsvolu("FGLA","BOX",idtmed[514],parfp,3);
399 // positioning 2 Glass Layers on FSTR volume
400 posfp[1] = -khstripy*0.5+khhony+khpcby+khmyly+khgraphy+parfp[1];
401 gMC->Gspos("FGLA",1,"FSTR",0., posfp[1],0.,0,"ONLY");
402 gMC->Gspos("FGLA",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
403 // adding further 2 Glass Layers on FSTR volume
404 posfp[1] = khpcby*0.5+khmyly+khgraphy+parfp[1];
405 gMC->Gspos("FGLA",3,"FSTR",0., posfp[1],0.,0,"ONLY");
406 gMC->Gspos("FGLA",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
409 //-- Sensitive Mixture Layer definition
410 parfp[0] = klsensmx*0.5;
411 parfp[1] = khsensmy*0.5;
412 parfp[2] = kwsensmz*0.5;
413 gMC->Gsvolu("FSEN","BOX",idtmed[513],parfp,3);
414 gMC->Gsvolu("FNSE","BOX",idtmed[512],parfp,3);
415 // positioning 2 gas Layers on FSTR volume
416 // the upper is insensitive freon
417 // while the remaining is sensitive
418 posfp[1] = khpcby*0.5+khmyly+khgraphy+khglasseiy+parfp[1];
419 gMC->Gspos("FNSE",0,"FSTR", 0., posfp[1],0.,0,"ONLY");
420 gMC->Gspos("FSEN",0,"FSTR", 0.,-posfp[1],0.,0,"ONLY");
422 // dividing FSEN along z in knz=2 and along x in knx=48
423 gMC->Gsdvn("FSEZ","FSEN",knz,3);
424 gMC->Gsdvn("FSEX","FSEZ",knx,1);
426 // FPAD volume definition
427 parfp[0] = klpadx*0.5;
428 parfp[1] = khsensmy*0.5;
429 parfp[2] = kwpadz*0.5;
430 gMC->Gsvolu("FPAD","BOX",idtmed[513],parfp,3);
431 // positioning the FPAD volumes on previous divisions
432 gMC->Gspos("FPAD",0,"FSEX",0.,0.,0.,0,"ONLY");
434 //// Positioning the Strips (FSTR) in the FLT volumes /////
438 Float_t t = zFLTC+zFLTB+zFLTA*0.5+ 2*db;//Half Width of Barrel
440 Float_t gap = fGapA+0.5; //cm updated distance between the strip axis
446 ycoor = -14.5 + kspace ; //2 cm over front plate
448 AliMatrix (idrotm[0], 90., 0.,90.,90.,0., 90.);
450 Int_t centerLoc= (Int_t)(fNStripA/2.) + 1; // AdC
452 //gMC->Gspos("FSTR",j,"FLTA",0.,ycoor, 0.,idrotm[0],"ONLY");
453 gMC->Gspos("FSTR",centerLoc,"FLTA",0.,ycoor, 0.,idrotm[0],"ONLY"); // AdC
455 printf("%s: %f, St. %2i, Pl.3 ",ClassName(),ang*kRaddeg,j); // AdC
456 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
460 Int_t upDown = -1; // upDown=-1 -> Upper strip
461 // upDown=+1 -> Lower strip
463 ang = atan(zcoor/radius);
465 AliMatrix (idrotm[nrot], 90., 0.,90.-ang,90.,-ang, 90.);
466 AliMatrix (idrotm[nrot+1],90.,180.,90.+ang,90., ang, 90.);
468 ycoor = -14.5+ kspace; //2 cm over front plate
469 ycoor += (1-(upDown+1)/2)*gap;
470 //gMC->Gspos("FSTR",j ,"FLTA",0.,ycoor, zcoor,idrotm[nrot], "ONLY");
471 //gMC->Gspos("FSTR",j+1,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY");
472 gMC->Gspos("FSTR",centerLoc-j,"FLTA",0.,ycoor, zcoor,idrotm[nrot], "ONLY"); // AdC
473 gMC->Gspos("FSTR",centerLoc+j,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY"); // AdC
475 printf("%s: %f, St. %2i, Pl.3 ",ClassName(),ang*kRaddeg,j); // AdC
476 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
478 j++; //j += 2; // AdC
479 upDown*= -1; // Alternate strips
480 zcoor = zcoor-(zSenStrip/2)/TMath::Cos(ang)-
481 upDown*gap*TMath::Tan(ang)-
482 (zSenStrip/2)/TMath::Cos(ang);
483 } while (zcoor-(stripWidth/2)*TMath::Cos(ang)>-t+zFLTC+zFLTB+db*2);
485 zcoor = zcoor+(zSenStrip/2)/TMath::Cos(ang)+
486 upDown*gap*TMath::Tan(ang)+
487 (zSenStrip/2)/TMath::Cos(ang);
490 zcoor = zcoor-(zSenStrip/2)/TMath::Cos(ang)-
491 upDown*gap*TMath::Tan(ang)-
492 (zSenStrip/2)/TMath::Cos(ang);
494 ang = atan(zcoor/radius);
496 AliMatrix (idrotm[nrot], 90., 0.,90.-ang,90.,-ang, 90.);
497 AliMatrix (idrotm[nrot+1],90.,180.,90.+ang,90., ang, 90.);
500 ycoor = -14.5+ kspace; //2 cm over front plate
501 ycoor += (1-(upDown+1)/2)*gap;
502 //gMC->Gspos("FSTR",j ,"FLTA",0.,ycoor, zcoor,idrotm[nrot], "ONLY");
503 //gMC->Gspos("FSTR",j+1,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY");
504 gMC->Gspos("FSTR",centerLoc-j,"FLTA",0.,ycoor, zcoor,idrotm[nrot], "ONLY"); // AdC
505 gMC->Gspos("FSTR",centerLoc+j,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY"); // AdC
507 printf("%s: %f, St. %2i, Pl.3 ",ClassName(),ang*kRaddeg,j); // AdC
508 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
510 ycoor = -hTof/2.+ kspace;//2 cm over front plate
517 Float_t deadRegion = 1.0;//cm
519 zpos = zcoor - (zSenStrip/2)/TMath::Cos(ang)-
520 upDown*gap*TMath::Tan(ang)-
521 (zSenStrip/2)/TMath::Cos(ang)-
522 deadRegion/TMath::Cos(ang);
524 ang = atan(zpos/radius);
526 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
528 ycoor = -hTof*0.5+ kspace ; //2 cm over front plate
529 ycoor += (1-(upDown+1)/2)*gap;
530 zcoor = zpos+(zFLTA*0.5+zFLTB*0.5+db); // Moves to the system of the modulus FLTB
531 gMC->Gspos("FSTR",i, "FLTB", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
533 printf("%s: %f, St. %2i, Pl.4 ",ClassName(),ang*kRaddeg,i);
534 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
540 zpos = zpos - (zSenStrip/2)/TMath::Cos(ang)-
541 upDown*gap*TMath::Tan(ang)-
542 (zSenStrip/2)/TMath::Cos(ang);
543 ang = atan(zpos/radius);
545 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
547 Float_t deltaSpaceinB=-0.5; // [cm] to avoid overlaps with the end of freon frame
548 Float_t deltaGapinB=0.5; // [cm] to avoid overlaps in between initial strips
549 ycoor = -hTof*0.5+ kspace+deltaSpaceinB ; //2 cm over front plate
550 ycoor += (1-(upDown+1)/2)*(gap+deltaGapinB);
551 zcoor = zpos+(zFLTA*0.5+zFLTB*0.5+db); // Moves to the system of the modulus FLTB
552 gMC->Gspos("FSTR",i, "FLTB", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
554 printf("%s: %f, St. %2i, Pl.4 ",ClassName(),ang*kRaddeg,i);
555 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
559 } while (TMath::Abs(ang*kRaddeg)<22.5);
560 //till we reach a tilting angle of 22.5 degrees
562 ycoor = -hTof*0.5+ kspace ; //2 cm over front plate
563 zpos = zpos - zSenStrip/TMath::Cos(ang);
564 // this avoid overlaps in between outer strips in plate B
565 Float_t deltaMovingUp=0.8; // [cm]
566 Float_t deltaMovingDown=-0.5; // [cm]
569 ang = atan(zpos/radius);
571 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
573 zcoor = zpos+(zFLTB/2+zFLTA/2+db);
574 gMC->Gspos("FSTR",i, "FLTB", 0., ycoor+deltaMovingDown+deltaMovingUp, zcoor,idrotm[nrot], "ONLY");
575 deltaMovingUp+=0.8; // update delta moving toward the end of the plate
576 zpos = zpos - zSenStrip/TMath::Cos(ang);
578 printf("%s: %f, St. %2i, Pl.4 ",ClassName(),ang*kRaddeg,i);
579 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
583 } while (zpos-stripWidth*0.5/TMath::Cos(ang)>-t+zFLTC+db);
587 zpos = zpos + zSenStrip/TMath::Cos(ang);
589 zpos = zpos - (zSenStrip/2)/TMath::Cos(ang)+
591 (zSenStrip/2)/TMath::Cos(ang);
595 Float_t deltaGap=-2.5; // [cm] update distance from strip center and plate
596 ycoor= -hTof*0.5+kspace+gap+deltaGap;
600 ang = atan(zpos/radius);
602 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
604 zcoor = zpos+(zFLTC*0.5+zFLTB+zFLTA*0.5+db*2);
605 gMC->Gspos("FSTR",i, "FLTC", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
607 printf("%s: %f, St. %2i, Pl.5 ",ClassName(),ang*kRaddeg,i);
608 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
610 zpos = zpos - zSenStrip/TMath::Cos(ang);
611 } while (zpos-stripWidth*TMath::Cos(ang)*0.5>-t);
614 ////////// Layers after strips /////////////////
615 // Al Layer thickness (2.3mm) factor 0.7
617 Float_t overSpace = fOverSpc;//cm
620 par[1] = 0.115*0.7; // factor 0.7
621 par[2] = (zFLTA *0.5);
622 ycoor = -yFLT/2 + overSpace + par[1];
623 gMC->Gsvolu("FPEA", "BOX ", idtmed[508], par, 3); // Al
624 gMC->Gspos ("FPEA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
625 par[2] = (zFLTB *0.5);
626 gMC->Gsvolu("FPEB", "BOX ", idtmed[508], par, 3); // Al
627 gMC->Gspos ("FPEB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
628 par[2] = (zFLTC *0.5);
629 gMC->Gsvolu("FPEC", "BOX ", idtmed[508], par, 3); // Al
630 gMC->Gspos ("FPEC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
633 // plexiglass thickness: 1.5 mm ; factor 0.3
636 par[1] = 0.075*0.3; // factor 0.3
637 par[2] = (zFLTA *0.5);
639 gMC->Gsvolu("FECA", "BOX ", idtmed[505], par, 3); // Plexigl.
640 gMC->Gspos ("FECA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
641 par[2] = (zFLTB *0.5);
642 gMC->Gsvolu("FECB", "BOX ", idtmed[505], par, 3); // Plexigl.
643 gMC->Gspos ("FECB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
644 par[2] = (zFLTC *0.5);
645 gMC->Gsvolu("FECC", "BOX ", idtmed[505], par, 3); // Plexigl.
646 gMC->Gspos ("FECC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
651 par[1] = (yFLT/2-ycoor-khAlWall)*0.5; // Aluminum layer considered (0.18 cm)
652 par[2] = (zFLTA *0.5);
654 gMC->Gsvolu("FAIA", "BOX ", idtmed[500], par, 3); // Air
655 gMC->Gspos ("FAIA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
656 par[2] = (zFLTB *0.5);
657 gMC->Gsvolu("FAIB", "BOX ", idtmed[500], par, 3); // Air
658 gMC->Gspos ("FAIB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
659 par[2] = (zFLTC *0.5);
660 gMC->Gsvolu("FAIC", "BOX ", idtmed[500], par, 3); // Air
661 gMC->Gspos ("FAIC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
664 // start with cards and cooling tubes
665 // finally, cards, cooling tubes and layer for thermal dispersion
667 // card volume definition
669 // see GEOM200 in GEANT manual
670 AliMatrix(idrotm[98], 90., 0., 90., 90., 0., 0.); // 0 deg
676 gMC->Gsvolu("FCAR", "BOX ", idtmed[504], cardpar, 3); // PCB Card
677 //alu plate volume definition
680 gMC->Gsvolu("FALP", "BOX ", idtmed[508], cardpar, 3); // Alu Plate
683 // central module positioning (FAIA)
684 Float_t cardpos[3], aplpos2, stepforcardA=6.625;
688 Float_t aplpos1 = -2.;
690 for (icard=0; icard<15; ++icard) {
691 cardpos[2]= cardpos[2]+stepforcardA;
692 aplpos2 = cardpos[2]+0.15;
693 gMC->Gspos("FCAR",icard,"FAIA",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
694 gMC->Gspos("FALP",icard,"FAIA",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
699 // intermediate module positioning (FAIB)
700 Float_t stepforcardB= 7.05;
702 for (icard=0; icard<19; ++icard) {
703 cardpos[2]= cardpos[2]+stepforcardB;
704 aplpos2 = cardpos[2]+0.15;
705 gMC->Gspos("FCAR",icard,"FAIB",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
706 gMC->Gspos("FALP",icard,"FAIB",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
710 // outer module positioning (FAIC)
711 Float_t stepforcardC= 8.45238;
713 for (icard=0; icard<20; ++icard) {
714 cardpos[2]= cardpos[2]+stepforcardC;
715 aplpos2 = cardpos[2]+0.15;
716 gMC->Gspos("FCAR",icard,"FAIC",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
717 gMC->Gspos("FALP",icard,"FAIC",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
720 // tube volume definition
725 gMC->Gsvolu("FTUB", "TUBE", idtmed[516], tubepar, 3); // cooling tubes (steel)
729 gMC->Gsvolu("FITU", "TUBE", idtmed[515], tubepar, 3); // cooling water
730 // positioning water tube into the steel one
731 gMC->Gspos("FITU",1,"FTUB",0.,0.,0.,0,"ONLY");
735 AliMatrix(idrotm[99], 180., 90., 90., 90., 90., 0.);
736 // central module positioning (FAIA)
737 Float_t tubepos[3], tdis=0.6;
739 tubepos[1]= cardpos[1];
740 tubepos[2]= -53.+tdis;
743 for (itub=0; itub<15; ++itub) {
744 tubepos[2]= tubepos[2]+stepforcardA;
745 gMC->Gspos("FTUB",itub,"FAIA",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
750 // intermediate module positioning (FAIB)
751 tubepos[2]= -70.5+tdis;
752 for (itub=0; itub<19; ++itub) {
753 tubepos[2]= tubepos[2]+stepforcardB;
754 gMC->Gspos("FTUB",itub,"FAIB",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
758 // outer module positioning (FAIC)
759 tubepos[2]= -88.75+tdis;
760 for (itub=0; itub<20; ++itub) {
761 tubepos[2]= tubepos[2]+stepforcardC;
762 gMC->Gspos("FTUB",itub,"FAIC",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
768 //_____________________________________________________________________________
769 void AliTOFv4T0::DrawModule() const
772 // Draw a shaded view of the Time Of Flight version 4
774 // Set everything unseen
775 gMC->Gsatt("*", "seen", -1);
777 // Set ALIC mother transparent
778 gMC->Gsatt("ALIC","SEEN",0);
780 // Set the volumes visible
781 gMC->Gsatt("ALIC","SEEN",0);
783 gMC->Gsatt("FTOA","SEEN",1);
784 gMC->Gsatt("FTOB","SEEN",1);
785 gMC->Gsatt("FTOC","SEEN",1);
786 gMC->Gsatt("FLTA","SEEN",1);
787 gMC->Gsatt("FLTB","SEEN",1);
788 gMC->Gsatt("FLTC","SEEN",1);
789 gMC->Gsatt("FPLA","SEEN",1);
790 gMC->Gsatt("FPLB","SEEN",1);
791 gMC->Gsatt("FPLC","SEEN",1);
792 gMC->Gsatt("FSTR","SEEN",1);
793 gMC->Gsatt("FPEA","SEEN",1);
794 gMC->Gsatt("FPEB","SEEN",1);
795 gMC->Gsatt("FPEC","SEEN",1);
797 gMC->Gsatt("FLZ1","SEEN",0);
798 gMC->Gsatt("FLZ2","SEEN",0);
799 gMC->Gsatt("FLZ3","SEEN",0);
800 gMC->Gsatt("FLX1","SEEN",0);
801 gMC->Gsatt("FLX2","SEEN",0);
802 gMC->Gsatt("FLX3","SEEN",0);
803 gMC->Gsatt("FPAD","SEEN",0);
805 gMC->Gdopt("hide", "on");
806 gMC->Gdopt("shad", "on");
807 gMC->Gsatt("*", "fill", 7);
808 gMC->SetClipBox(".");
809 gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
811 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .02, .02);
812 gMC->Gdhead(1111, "Time Of Flight");
813 gMC->Gdman(18, 4, "MAN");
814 gMC->Gdopt("hide","off");
816 //_____________________________________________________________________________
817 void AliTOFv4T0::DrawDetectorModules()
820 // Draw a shaded view of the TOF detector version 4
824 //Set ALIC mother transparent
825 gMC->Gsatt("ALIC","SEEN",0);
828 //Set volumes visible
831 // Level 1 for TOF volumes
832 gMC->Gsatt("B077","seen",0);
835 //==========> Level 2
837 gMC->Gsatt("B076","seen",-1); // all B076 sub-levels skipped -
838 gMC->Gsatt("B071","seen",0);
839 gMC->Gsatt("B074","seen",0);
840 gMC->Gsatt("B075","seen",0);
841 gMC->Gsatt("B080","seen",0); // B080 does not has sub-level
845 gMC->Gsatt("B063","seen",-1); // all B063 sub-levels skipped -
846 gMC->Gsatt("B065","seen",-1); // all B065 sub-levels skipped -
847 gMC->Gsatt("B067","seen",-1); // all B067 sub-levels skipped -
848 gMC->Gsatt("B069","seen",-1); // all B069 sub-levels skipped -
849 gMC->Gsatt("B056","seen",0); // B056 does not has sub-levels -
850 gMC->Gsatt("B059","seen",-1); // all B059 sub-levels skipped -
851 gMC->Gsatt("B072","seen",-1); // all B072 sub-levels skipped -
852 gMC->Gsatt("BTR1","seen",0); // BTR1 do not have sub-levels -
853 gMC->Gsatt("BTO1","seen",0);
857 gMC->Gsatt("BTR2","seen",0); // BTR2 does not has sub-levels -
858 gMC->Gsatt("BTO2","seen",0);
861 gMC->Gsatt("BTR3","seen",0); // BTR3 do not have sub-levels -
862 gMC->Gsatt("BTO3","seen",0);
864 // ==================> Level 3
865 // Level 3 of B071 / Level 2 of BTO1
866 gMC->Gsatt("FTOC","seen",-2);
867 gMC->Gsatt("FTOB","seen",-2);
868 gMC->Gsatt("FTOA","seen",-2);
870 // Level 3 of B074 / Level 2 of BTO2
871 // -> cfr previous settings
873 // Level 3 of B075 / Level 2 of BTO3
874 // -> cfr previous settings
876 gMC->Gdopt("hide","on");
877 gMC->Gdopt("shad","on");
878 gMC->Gsatt("*", "fill", 5);
879 gMC->SetClipBox(".");
880 gMC->SetClipBox("*", 0, 1000, 0, 1000, 0, 1000);
882 gMC->Gdraw("alic", 45, 40, 0, 10, 10, .015, .015);
883 gMC->Gdhead(1111,"TOF detector V1");
884 gMC->Gdman(18, 4, "MAN");
885 gMC->Gdopt("hide","off");
888 //_____________________________________________________________________________
889 void AliTOFv4T0::DrawDetectorStrips()
892 // Draw a shaded view of the TOF strips for version 4
895 //Set ALIC mother transparent
896 gMC->Gsatt("ALIC","SEEN",0);
899 //Set volumes visible
901 // Level 1 for TOF volumes
902 gMC->Gsatt("B077","seen",0);
904 //==========> Level 2
906 gMC->Gsatt("B076","seen",-1); // all B076 sub-levels skipped -
907 gMC->Gsatt("B071","seen",0);
908 gMC->Gsatt("B074","seen",0);
909 gMC->Gsatt("B075","seen",0);
910 gMC->Gsatt("B080","seen",0); // B080 does not has sub-level
913 gMC->Gsatt("B063","seen",-1); // all B063 sub-levels skipped -
914 gMC->Gsatt("B065","seen",-1); // all B065 sub-levels skipped -
915 gMC->Gsatt("B067","seen",-1); // all B067 sub-levels skipped -
916 gMC->Gsatt("B069","seen",-1); // all B069 sub-levels skipped -
917 gMC->Gsatt("B056","seen",0); // B056 does not has sub-levels -
918 gMC->Gsatt("B059","seen",-1); // all B059 sub-levels skipped -
919 gMC->Gsatt("B072","seen",-1); // all B072 sub-levels skipped -
920 gMC->Gsatt("BTR1","seen",0); // BTR1 do not have sub-levels -
921 gMC->Gsatt("BTO1","seen",0);
923 // ==================> Level 3
924 // Level 3 of B071 / Level 2 of BTO1
925 gMC->Gsatt("FTOC","seen",0);
926 gMC->Gsatt("FTOB","seen",0);
927 gMC->Gsatt("FTOA","seen",0);
929 // Level 3 of B074 / Level 2 of BTO2
930 // -> cfr previous settings
932 // Level 3 of B075 / Level 2 of BTO3
933 // -> cfr previous settings
936 // ==========================> Level 4
937 // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOC
938 gMC->Gsatt("FLTC","seen",0);
939 // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOB
940 gMC->Gsatt("FLTB","seen",0);
941 // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOA
942 gMC->Gsatt("FLTA","seen",0);
944 // Level 4 of B074 / Level 3 of BTO2 / Level 2 of FTOC
945 // -> cfr previous settings
946 // Level 4 of B074 / Level 3 of BTO2 / Level 2 of FTOB
947 // -> cfr previous settings
949 // Level 4 of B075 / Level 3 of BTO3 / Level 2 of FTOC
950 // -> cfr previous settings
952 //======================================> Level 5
953 // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOC / Level 2 of FLTC
954 gMC->Gsatt("FALC","seen",0); // no children for FALC
955 gMC->Gsatt("FSTR","seen",-2);
956 gMC->Gsatt("FPEC","seen",0); // no children for FPEC
957 gMC->Gsatt("FECC","seen",0); // no children for FECC
958 gMC->Gsatt("FWAC","seen",0); // no children for FWAC
959 gMC->Gsatt("FAIC","seen",0); // no children for FAIC
961 // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOB / Level 2 of FLTB
962 gMC->Gsatt("FALB","seen",0); // no children for FALB
963 //--> gMC->Gsatt("FSTR","seen",-2);
966 // -> cfr previous settings
967 gMC->Gsatt("FPEB","seen",0); // no children for FPEB
968 gMC->Gsatt("FECB","seen",0); // no children for FECB
969 gMC->Gsatt("FWAB","seen",0); // no children for FWAB
970 gMC->Gsatt("FAIB","seen",0); // no children for FAIB
972 // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOA / Level 2 of FLTA
973 gMC->Gsatt("FALA","seen",0); // no children for FALB
974 //--> gMC->Gsatt("FSTR","seen",-2);
975 // -> cfr previous settings
976 gMC->Gsatt("FPEA","seen",0); // no children for FPEA
977 gMC->Gsatt("FECA","seen",0); // no children for FECA
978 gMC->Gsatt("FWAA","seen",0); // no children for FWAA
979 gMC->Gsatt("FAIA","seen",0); // no children for FAIA
982 gMC->Gsatt("BTR2","seen",0); // BTR2 does not has sub-levels -
983 gMC->Gsatt("BTO2","seen",0);
986 gMC->Gsatt("BTR3","seen",0); // BTR3 do not have sub-levels -
987 gMC->Gsatt("BTO3","seen",0);
989 // for others Level 5, cfr. previous settings
991 gMC->Gdopt("hide","on");
992 gMC->Gdopt("shad","on");
993 gMC->Gsatt("*", "fill", 5);
994 gMC->SetClipBox(".");
995 gMC->SetClipBox("*", 0, 1000, 0, 1000, 0, 1000);
997 gMC->Gdraw("alic", 45, 40, 0, 10, 10, .015, .015);
998 gMC->Gdhead(1111,"TOF Strips V1");
999 gMC->Gdman(18, 4, "MAN");
1000 gMC->Gdopt("hide","off");
1003 //_____________________________________________________________________________
1004 void AliTOFv4T0::CreateMaterials()
1007 // Define materials for the Time Of Flight
1009 AliTOF::CreateMaterials();
1012 //_____________________________________________________________________________
1013 void AliTOFv4T0::Init()
1016 // Initialise the detector after the geometry has been defined
1019 printf("%s: **************************************"
1021 "**************************************\n",ClassName());
1022 printf("\n%s: Version 4 of TOF initialing, "
1023 "symmetric TOF - Full Coverage version\n",ClassName());
1028 fIdFTOA = gMC->VolId("FTOA");
1029 fIdFTOB = gMC->VolId("FTOB");
1030 fIdFTOC = gMC->VolId("FTOC");
1031 fIdFLTA = gMC->VolId("FLTA");
1032 fIdFLTB = gMC->VolId("FLTB");
1033 fIdFLTC = gMC->VolId("FLTC");
1036 printf("%s: **************************************"
1038 "**************************************\n",ClassName());
1042 //_____________________________________________________________________________
1043 void AliTOFv4T0::StepManager()
1046 // Procedure called at each step in the Time Of Flight
1048 TLorentzVector mom, pos;
1049 Float_t xm[3],pm[3],xpad[3],ppad[3];
1050 Float_t hits[14],phi,phid,z;
1052 Int_t sector, plate, padx, padz, strip;
1053 Int_t copy, padzid, padxid, stripid, i;
1054 Int_t *idtmed = fIdtmed->GetArray()-499;
1055 Float_t incidenceAngle;
1057 if(gMC->GetMedium()==idtmed[513] &&
1058 gMC->IsTrackEntering() && gMC->TrackCharge()
1059 && gMC->CurrentVolID(copy)==fIdSens)
1061 // getting information about hit volumes
1063 padzid=gMC->CurrentVolOffID(2,copy);
1066 padxid=gMC->CurrentVolOffID(1,copy);
1069 stripid=gMC->CurrentVolOffID(4,copy);
1072 gMC->TrackPosition(pos);
1073 gMC->TrackMomentum(mom);
1075 // Double_t NormPos=1./pos.Rho();
1076 Double_t normMom=1./mom.Rho();
1078 // getting the cohordinates in pad ref system
1079 xm[0] = (Float_t)pos.X();
1080 xm[1] = (Float_t)pos.Y();
1081 xm[2] = (Float_t)pos.Z();
1083 pm[0] = (Float_t)mom.X()*normMom;
1084 pm[1] = (Float_t)mom.Y()*normMom;
1085 pm[2] = (Float_t)mom.Z()*normMom;
1087 gMC->Gmtod(xm,xpad,1);
1088 gMC->Gmtod(pm,ppad,2);
1090 incidenceAngle = TMath::ACos(ppad[1])*kRaddeg;
1095 if (TMath::Abs(z) <= fZlenA*0.5) plate = 2; //3; // AdC
1096 if (z < (fZlenA*0.5+fZlenB) &&
1097 z > fZlenA*0.5) plate = 1; //4; // AdC
1098 if (z >-(fZlenA*0.5+fZlenB) &&
1099 z < -fZlenA*0.5) plate = 3; //2; // AdC
1100 if (z > (fZlenA*0.5+fZlenB)) plate = 0; //5; // AdC
1101 if (z <-(fZlenA*0.5+fZlenB)) plate = 4; //1; // AdC
1103 if (plate==0) strip=AliTOFConstants::fgkNStripC-strip; // AdC
1104 else if (plate==1) strip=AliTOFConstants::fgkNStripB-strip; // AdC
1105 else strip--; // AdC
1107 if (z<=0.) padx=AliTOFConstants::fgkNpadX-padx; // AdC
1110 if (plate==3 || plate==4) padz=AliTOFConstants::fgkNpadZ-padz; // AdC
1114 if (phi>=0.) phid = phi*kRaddeg; //+180.; // AdC
1115 else phid = phi*kRaddeg + 360.; // AdC
1116 sector = Int_t (phid/20.);
1124 hits[6] = mom.Rho();
1129 hits[11]= incidenceAngle;
1130 hits[12]= gMC->Edep();
1131 hits[13]= gMC->TrackLength();
1139 AddT0Hit(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol, hits);