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
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"
57 //_____________________________________________________________________________
58 AliTOFv4T0::AliTOFv4T0()
61 // Default constructor
65 //_____________________________________________________________________________
66 AliTOFv4T0::AliTOFv4T0(const char *name, const char *title)
67 : AliTOF(name,title,"tzero")
70 // Standard constructor
73 // Check that FRAME is there otherwise we have no place where to
75 AliModule* frame=gAlice->GetModule("FRAME");
77 Error("Ctor","TOF needs FRAME to be present\n");
80 if(frame->IsVersion()!=1) {
81 Error("Ctor","FRAME version 1 needed with this version of TOF\n");
87 //____________________________________________________________________________
89 void AliTOFv4T0::BuildGeometry()
92 // Build TOF ROOT geometry for the ALICE event display
95 const int kColorTOF = 27;
98 top = gAlice->GetGeometry()->GetNode("alice");
100 // Position the different copies
101 const Float_t krTof =(fRmax+fRmin)/2;
102 const Float_t khTof = fRmax-fRmin;
103 const Int_t kNTof = fNTof;
104 const Float_t kPi = TMath::Pi();
105 const Float_t kangle = 2*kPi/kNTof;
108 // define offset for nodes
109 Float_t zOffsetC = fZtof - fZlenC*0.5;
110 Float_t zOffsetB = fZtof - fZlenC - fZlenB*0.5;
111 Float_t zOffsetA = 0.;
112 // Define TOF basic volume
114 char nodeName0[7], nodeName1[7], nodeName2[7];
115 char nodeName3[7], nodeName4[7], rotMatNum[7];
117 new TBRIK("S_TOF_C","TOF box","void",
118 fStripLn*0.5,khTof*0.5,fZlenC*0.5);
119 new TBRIK("S_TOF_B","TOF box","void",
120 fStripLn*0.5,khTof*0.5,fZlenB*0.5);
121 new TBRIK("S_TOF_A","TOF box","void",
122 fStripLn*0.5,khTof*0.5,fZlenA*0.5);
124 for (Int_t nodeNum=1;nodeNum<19;nodeNum++){
127 sprintf(rotMatNum,"rot50%i",nodeNum);
128 sprintf(nodeName0,"FTO00%i",nodeNum);
129 sprintf(nodeName1,"FTO10%i",nodeNum);
130 sprintf(nodeName2,"FTO20%i",nodeNum);
131 sprintf(nodeName3,"FTO30%i",nodeNum);
132 sprintf(nodeName4,"FTO40%i",nodeNum);
135 sprintf(rotMatNum,"rot5%i",nodeNum);
136 sprintf(nodeName0,"FTO0%i",nodeNum);
137 sprintf(nodeName1,"FTO1%i",nodeNum);
138 sprintf(nodeName2,"FTO2%i",nodeNum);
139 sprintf(nodeName3,"FTO3%i",nodeNum);
140 sprintf(nodeName4,"FTO4%i",nodeNum);
143 new TRotMatrix(rotMatNum,rotMatNum,90,-20*nodeNum,90,90-20*nodeNum,0,0);
144 ang = (4.5-nodeNum) * kangle;
147 node = new TNode(nodeName0,nodeName0,"S_TOF_C",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),zOffsetC,rotMatNum);
148 node->SetLineColor(kColorTOF);
152 node = new TNode(nodeName1,nodeName1,"S_TOF_C",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),-zOffsetC,rotMatNum);
153 node->SetLineColor(kColorTOF);
157 node = new TNode(nodeName2,nodeName2,"S_TOF_B",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),zOffsetB,rotMatNum);
158 node->SetLineColor(kColorTOF);
162 node = new TNode(nodeName3,nodeName3,"S_TOF_B",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),-zOffsetB,rotMatNum);
163 node->SetLineColor(kColorTOF);
167 node = new TNode(nodeName4,nodeName4,"S_TOF_A",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),zOffsetA,rotMatNum);
168 node->SetLineColor(kColorTOF);
170 } // end loop on nodeNum
175 //_____________________________________________________________________________
176 void AliTOFv4T0::CreateGeometry()
179 // Create geometry for Time Of Flight version 0
183 <img src="picts/AliTOFv4T0.gif">
187 // Creates common geometry
189 AliTOF::CreateGeometry();
192 //_____________________________________________________________________________
193 void AliTOFv4T0::TOFpc(Float_t xtof, Float_t ytof, Float_t zlenC,
194 Float_t zlenB, Float_t zlenA, Float_t ztof0)
197 // Definition of the Time Of Fligh Resistive Plate Chambers
198 // xFLT, yFLT, zFLT - sizes of TOF modules (large)
200 Float_t ycoor, zcoor;
202 Int_t *idtmed = fIdtmed->GetArray()-499;
205 Float_t hTof = fRmax-fRmin;
207 Float_t radius = fRmin+2.;//cm
211 par[2] = zlenC * 0.5;
212 gMC->Gsvolu("FTOC", "BOX ", idtmed[506], par, 3);
213 par[2] = zlenB * 0.5;
214 gMC->Gsvolu("FTOB", "BOX ", idtmed[506], par, 3);
215 par[2] = zlenA * 0.5;
216 gMC->Gsvolu("FTOA", "BOX ", idtmed[506], par, 3);
219 // Positioning of modules
221 Float_t zcor1 = ztof0 - zlenC*0.5;
222 Float_t zcor2 = ztof0 - zlenC - zlenB*0.5;
225 AliMatrix(idrotm[0], 90., 0., 0., 0., 90,-90.);
226 AliMatrix(idrotm[1], 90.,180., 0., 0., 90, 90.);
227 gMC->Gspos("FTOC", 1, "BTO1", 0, zcor1, 0, idrotm[0], "ONLY");
228 gMC->Gspos("FTOC", 2, "BTO1", 0, -zcor1, 0, idrotm[1], "ONLY");
229 gMC->Gspos("FTOC", 1, "BTO2", 0, zcor1, 0, idrotm[0], "ONLY");
230 gMC->Gspos("FTOC", 2, "BTO2", 0, -zcor1, 0, idrotm[1], "ONLY");
231 gMC->Gspos("FTOC", 1, "BTO3", 0, zcor1, 0, idrotm[0], "ONLY");
232 gMC->Gspos("FTOC", 2, "BTO3", 0, -zcor1, 0, idrotm[1], "ONLY");
234 gMC->Gspos("FTOB", 1, "BTO1", 0, zcor2, 0, idrotm[0], "ONLY");
235 gMC->Gspos("FTOB", 2, "BTO1", 0, -zcor2, 0, idrotm[1], "ONLY");
236 gMC->Gspos("FTOB", 1, "BTO2", 0, zcor2, 0, idrotm[0], "ONLY");
237 gMC->Gspos("FTOB", 2, "BTO2", 0, -zcor2, 0, idrotm[1], "ONLY");
238 gMC->Gspos("FTOB", 1, "BTO3", 0, zcor2, 0, idrotm[0], "ONLY");
239 gMC->Gspos("FTOB", 2, "BTO3", 0, -zcor2, 0, idrotm[1], "ONLY");
241 gMC->Gspos("FTOA", 0, "BTO1", 0, zcor3, 0, idrotm[0], "ONLY");
242 gMC->Gspos("FTOA", 0, "BTO2", 0, zcor3, 0, idrotm[0], "ONLY");
243 gMC->Gspos("FTOA", 0, "BTO3", 0, zcor3, 0, idrotm[0], "ONLY");
245 Float_t db = 0.5;//cm
246 Float_t xFLT, xFST, yFLT, zFLTA, zFLTB, zFLTC;
254 xFST = xFLT-fDeadBndX*2;//cm
256 // Sizes of MRPC pads
258 Float_t yPad = 0.505;//cm
260 // Large not sensitive volumes with Insensitive Freon
264 if (fDebug) cout << ClassName() <<
265 ": ************************* TOF geometry **************************"<<endl;
267 par[2] = (zFLTA *0.5);
268 gMC->Gsvolu("FLTA", "BOX ", idtmed[512], par, 3); // Insensitive Freon
269 gMC->Gspos ("FLTA", 0, "FTOA", 0., 0., 0., 0, "ONLY");
271 par[2] = (zFLTB * 0.5);
272 gMC->Gsvolu("FLTB", "BOX ", idtmed[512], par, 3); // Insensitive Freon
273 gMC->Gspos ("FLTB", 0, "FTOB", 0., 0., 0., 0, "ONLY");
275 par[2] = (zFLTC * 0.5);
276 gMC->Gsvolu("FLTC", "BOX ", idtmed[512], par, 3); // Insensitive Freon
277 gMC->Gspos ("FLTC", 0, "FTOC", 0., 0., 0., 0, "ONLY");
279 ///// Layers of Aluminum before and after detector /////
280 ///// Aluminum Box for Modules (1.8 mm thickness) /////
281 ///// lateral walls not simulated for the time being
282 //const Float_t khAlWall = 0.18;
284 const Float_t khAlWall = 0.11;
286 par[1] = khAlWall/2.;//cm
287 ycoor = -yFLT/2 + par[1];
288 par[2] = (zFLTA *0.5);
289 gMC->Gsvolu("FALA", "BOX ", idtmed[508], par, 3); // Alluminium
290 gMC->Gspos ("FALA", 1, "FLTA", 0., ycoor, 0., 0, "ONLY");
291 gMC->Gspos ("FALA", 2, "FLTA", 0.,-ycoor, 0., 0, "ONLY");
292 par[2] = (zFLTB *0.5);
293 gMC->Gsvolu("FALB", "BOX ", idtmed[508], par, 3); // Alluminium
294 gMC->Gspos ("FALB", 1, "FLTB", 0., ycoor, 0., 0, "ONLY");
295 gMC->Gspos ("FALB", 2, "FLTB", 0.,-ycoor, 0., 0, "ONLY");
296 par[2] = (zFLTC *0.5);
297 gMC->Gsvolu("FALC", "BOX ", idtmed[508], par, 3); // Alluminium
298 gMC->Gspos ("FALC", 1, "FLTC", 0., ycoor, 0., 0, "ONLY");
299 gMC->Gspos ("FALC", 2, "FLTC", 0.,-ycoor, 0., 0, "ONLY");
301 ///////////////// Detector itself //////////////////////
303 const Float_t kdeadBound = fDeadBndZ; //cm non-sensitive between the pad edge
304 //and the boundary of the strip
305 const Int_t knx = fNpadX; // number of pads along x
306 const Int_t knz = fNpadZ; // number of pads along z
307 const Float_t kspace = fSpace; //cm distance from the front plate of the box
309 Float_t zSenStrip = fZpad*fNpadZ;//cm
310 Float_t stripWidth = zSenStrip + 2*kdeadBound;
314 par[2] = stripWidth*0.5;
316 // new description for strip volume -double stack strip-
317 // -- all constants are expressed in cm
318 // heigth of different layers
319 const Float_t khhony = 0.8 ; // heigth of HONY Layer
320 const Float_t khpcby = 0.08 ; // heigth of PCB Layer
321 const Float_t khmyly = 0.035 ; // heigth of MYLAR Layer
322 const Float_t khgraphy = 0.02 ; // heigth of GRAPHITE Layer
323 const Float_t khglasseiy = 0.135; // 0.6 Ext. Glass + 1.1 i.e. (Int. Glass/2) (mm)
324 const Float_t khsensmy = 0.11 ; // heigth of Sensitive Freon Mixture
325 const Float_t kwsensmz = 2*3.5 ; // cm
326 const Float_t klsensmx = 48*2.5; // cm
327 const Float_t kwpadz = 3.5; // cm z dimension of the FPAD volume
328 const Float_t klpadx = 2.5; // cm x dimension of the FPAD volume
330 // heigth of the FSTR Volume (the strip volume)
331 const Float_t khstripy = 2*khhony+3*khpcby+4*(khmyly+khgraphy+khglasseiy)+2*khsensmy;
332 // width of the FSTR Volume (the strip volume)
333 const Float_t kwstripz = 10.;
334 // length of the FSTR Volume (the strip volume)
335 const Float_t klstripx = 122.;
337 Float_t parfp[3]={klstripx*0.5,khstripy*0.5,kwstripz*0.5};
338 // coordinates of the strip center in the strip reference frame; used for positioning
339 // internal strip volumes
340 Float_t posfp[3]={0.,0.,0.};
343 // FSTR volume definition and filling this volume with non sensitive Gas Mixture
344 gMC->Gsvolu("FSTR","BOX",idtmed[512],parfp,3);
345 //-- HONY Layer definition
347 parfp[1] = khhony*0.5;
349 gMC->Gsvolu("FHON","BOX",idtmed[503],parfp,3);
350 // positioning 2 HONY Layers on FSTR volume
352 posfp[1]=-khstripy*0.5+parfp[1];
353 gMC->Gspos("FHON",1,"FSTR",0., posfp[1],0.,0,"ONLY");
354 gMC->Gspos("FHON",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
356 //-- PCB Layer definition
357 parfp[1] = khpcby*0.5;
358 gMC->Gsvolu("FPCB","BOX",idtmed[504],parfp,3);
359 // positioning 2 PCB Layers on FSTR volume
360 posfp[1]=-khstripy*0.5+khhony+parfp[1];
361 gMC->Gspos("FPCB",1,"FSTR",0., posfp[1],0.,0,"ONLY");
362 gMC->Gspos("FPCB",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
363 // positioning the central PCB layer
364 gMC->Gspos("FPCB",3,"FSTR",0.,0.,0.,0,"ONLY");
368 //-- MYLAR Layer definition
369 parfp[1] = khmyly*0.5;
370 gMC->Gsvolu("FMYL","BOX",idtmed[511],parfp,3);
371 // positioning 2 MYLAR Layers on FSTR volume
372 posfp[1] = -khstripy*0.5+khhony+khpcby+parfp[1];
373 gMC->Gspos("FMYL",1,"FSTR",0., posfp[1],0.,0,"ONLY");
374 gMC->Gspos("FMYL",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
375 // adding further 2 MYLAR Layers on FSTR volume
376 posfp[1] = khpcby*0.5+parfp[1];
377 gMC->Gspos("FMYL",3,"FSTR",0., posfp[1],0.,0,"ONLY");
378 gMC->Gspos("FMYL",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
381 //-- Graphite Layer definition
382 parfp[1] = khgraphy*0.5;
383 gMC->Gsvolu("FGRP","BOX",idtmed[502],parfp,3);
384 // positioning 2 Graphite Layers on FSTR volume
385 posfp[1] = -khstripy*0.5+khhony+khpcby+khmyly+parfp[1];
386 gMC->Gspos("FGRP",1,"FSTR",0., posfp[1],0.,0,"ONLY");
387 gMC->Gspos("FGRP",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
388 // adding further 2 Graphite Layers on FSTR volume
389 posfp[1] = khpcby*0.5+khmyly+parfp[1];
390 gMC->Gspos("FGRP",3,"FSTR",0., posfp[1],0.,0,"ONLY");
391 gMC->Gspos("FGRP",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
394 //-- Glass (EXT. +Semi INT.) Layer definition
395 parfp[1] = khglasseiy*0.5;
396 gMC->Gsvolu("FGLA","BOX",idtmed[514],parfp,3);
397 // positioning 2 Glass Layers on FSTR volume
398 posfp[1] = -khstripy*0.5+khhony+khpcby+khmyly+khgraphy+parfp[1];
399 gMC->Gspos("FGLA",1,"FSTR",0., posfp[1],0.,0,"ONLY");
400 gMC->Gspos("FGLA",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
401 // adding further 2 Glass Layers on FSTR volume
402 posfp[1] = khpcby*0.5+khmyly+khgraphy+parfp[1];
403 gMC->Gspos("FGLA",3,"FSTR",0., posfp[1],0.,0,"ONLY");
404 gMC->Gspos("FGLA",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
407 //-- Sensitive Mixture Layer definition
408 parfp[0] = klsensmx*0.5;
409 parfp[1] = khsensmy*0.5;
410 parfp[2] = kwsensmz*0.5;
411 gMC->Gsvolu("FSEN","BOX",idtmed[513],parfp,3);
412 gMC->Gsvolu("FNSE","BOX",idtmed[512],parfp,3);
413 // positioning 2 gas Layers on FSTR volume
414 // the upper is insensitive freon
415 // while the remaining is sensitive
416 posfp[1] = khpcby*0.5+khmyly+khgraphy+khglasseiy+parfp[1];
417 gMC->Gspos("FNSE",0,"FSTR", 0., posfp[1],0.,0,"ONLY");
418 gMC->Gspos("FSEN",0,"FSTR", 0.,-posfp[1],0.,0,"ONLY");
420 // dividing FSEN along z in knz=2 and along x in knx=48
421 gMC->Gsdvn("FSEZ","FSEN",knz,3);
422 gMC->Gsdvn("FSEX","FSEZ",knx,1);
424 // FPAD volume definition
425 parfp[0] = klpadx*0.5;
426 parfp[1] = khsensmy*0.5;
427 parfp[2] = kwpadz*0.5;
428 gMC->Gsvolu("FPAD","BOX",idtmed[513],parfp,3);
429 // positioning the FPAD volumes on previous divisions
430 gMC->Gspos("FPAD",0,"FSEX",0.,0.,0.,0,"ONLY");
432 //// Positioning the Strips (FSTR) in the FLT volumes /////
436 Float_t t = zFLTC+zFLTB+zFLTA*0.5+ 2*db;//Half Width of Barrel
438 Float_t gap = fGapA+0.5; //cm updated distance between the strip axis
444 ycoor = -14.5 + kspace ; //2 cm over front plate
446 AliMatrix (idrotm[0], 90., 0.,90.,90.,0., 90.);
447 gMC->Gspos("FSTR",j,"FLTA",0.,ycoor, 0.,idrotm[0],"ONLY");
449 printf("%s: %f, St. %2i, Pl.3 ",ClassName(),ang*kRaddeg,i);
450 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
454 Int_t upDown = -1; // upDown=-1 -> Upper strip
455 // upDown=+1 -> Lower strip
457 ang = atan(zcoor/radius);
459 AliMatrix (idrotm[nrot], 90., 0.,90.-ang,90.,-ang, 90.);
460 AliMatrix (idrotm[nrot+1],90.,180.,90.+ang,90., ang, 90.);
462 ycoor = -14.5+ kspace; //2 cm over front plate
463 ycoor += (1-(upDown+1)/2)*gap;
464 gMC->Gspos("FSTR",j ,"FLTA",0.,ycoor, zcoor,idrotm[nrot], "ONLY");
465 gMC->Gspos("FSTR",j+1,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY");
467 printf("%s: %f, St. %2i, Pl.3 ",ClassName(),ang*kRaddeg,i);
468 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
471 upDown*= -1; // Alternate strips
472 zcoor = zcoor-(zSenStrip/2)/TMath::Cos(ang)-
473 upDown*gap*TMath::Tan(ang)-
474 (zSenStrip/2)/TMath::Cos(ang);
475 } while (zcoor-(stripWidth/2)*TMath::Cos(ang)>-t+zFLTC+zFLTB+db*2);
477 zcoor = zcoor+(zSenStrip/2)/TMath::Cos(ang)+
478 upDown*gap*TMath::Tan(ang)+
479 (zSenStrip/2)/TMath::Cos(ang);
482 zcoor = zcoor-(zSenStrip/2)/TMath::Cos(ang)-
483 upDown*gap*TMath::Tan(ang)-
484 (zSenStrip/2)/TMath::Cos(ang);
486 ang = atan(zcoor/radius);
488 AliMatrix (idrotm[nrot], 90., 0.,90.-ang,90.,-ang, 90.);
489 AliMatrix (idrotm[nrot+1],90.,180.,90.+ang,90., ang, 90.);
492 ycoor = -14.5+ kspace; //2 cm over front plate
493 ycoor += (1-(upDown+1)/2)*gap;
494 gMC->Gspos("FSTR",j ,"FLTA",0.,ycoor, zcoor,idrotm[nrot], "ONLY");
495 gMC->Gspos("FSTR",j+1,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY");
497 printf("%s: %f, St. %2i, Pl.3 ",ClassName(),ang*kRaddeg,i);
498 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
500 ycoor = -hTof/2.+ kspace;//2 cm over front plate
507 Float_t deadRegion = 1.0;//cm
509 zpos = zcoor - (zSenStrip/2)/TMath::Cos(ang)-
510 upDown*gap*TMath::Tan(ang)-
511 (zSenStrip/2)/TMath::Cos(ang)-
512 deadRegion/TMath::Cos(ang);
514 ang = atan(zpos/radius);
516 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
518 ycoor = -hTof*0.5+ kspace ; //2 cm over front plate
519 ycoor += (1-(upDown+1)/2)*gap;
520 zcoor = zpos+(zFLTA*0.5+zFLTB*0.5+db); // Moves to the system of the modulus FLTB
521 gMC->Gspos("FSTR",i, "FLTB", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
523 printf("%s: %f, St. %2i, Pl.4 ",ClassName(),ang*kRaddeg,i);
524 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
530 zpos = zpos - (zSenStrip/2)/TMath::Cos(ang)-
531 upDown*gap*TMath::Tan(ang)-
532 (zSenStrip/2)/TMath::Cos(ang);
533 ang = atan(zpos/radius);
535 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
537 Float_t deltaSpaceinB=-0.5; // [cm] to avoid overlaps with the end of freon frame
538 Float_t deltaGapinB=0.5; // [cm] to avoid overlaps in between initial strips
539 ycoor = -hTof*0.5+ kspace+deltaSpaceinB ; //2 cm over front plate
540 ycoor += (1-(upDown+1)/2)*(gap+deltaGapinB);
541 zcoor = zpos+(zFLTA*0.5+zFLTB*0.5+db); // Moves to the system of the modulus FLTB
542 gMC->Gspos("FSTR",i, "FLTB", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
544 printf("%s: %f, St. %2i, Pl.4 ",ClassName(),ang*kRaddeg,i);
545 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
549 } while (TMath::Abs(ang*kRaddeg)<22.5);
550 //till we reach a tilting angle of 22.5 degrees
552 ycoor = -hTof*0.5+ kspace ; //2 cm over front plate
553 zpos = zpos - zSenStrip/TMath::Cos(ang);
554 // this avoid overlaps in between outer strips in plate B
555 Float_t deltaMovingUp=0.8; // [cm]
556 Float_t deltaMovingDown=-0.5; // [cm]
559 ang = atan(zpos/radius);
561 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
563 zcoor = zpos+(zFLTB/2+zFLTA/2+db);
564 gMC->Gspos("FSTR",i, "FLTB", 0., ycoor+deltaMovingDown+deltaMovingUp, zcoor,idrotm[nrot], "ONLY");
565 deltaMovingUp+=0.8; // update delta moving toward the end of the plate
566 zpos = zpos - zSenStrip/TMath::Cos(ang);
568 printf("%s: %f, St. %2i, Pl.4 ",ClassName(),ang*kRaddeg,i);
569 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
573 } while (zpos-stripWidth*0.5/TMath::Cos(ang)>-t+zFLTC+db);
577 zpos = zpos + zSenStrip/TMath::Cos(ang);
579 zpos = zpos - (zSenStrip/2)/TMath::Cos(ang)+
581 (zSenStrip/2)/TMath::Cos(ang);
585 Float_t deltaGap=-2.5; // [cm] update distance from strip center and plate
586 ycoor= -hTof*0.5+kspace+gap+deltaGap;
590 ang = atan(zpos/radius);
592 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
594 zcoor = zpos+(zFLTC*0.5+zFLTB+zFLTA*0.5+db*2);
595 gMC->Gspos("FSTR",i, "FLTC", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
597 printf("%s: %f, St. %2i, Pl.5 ",ClassName(),ang*kRaddeg,i);
598 printf("y = %f, z = %f, zpos = %f \n",ycoor,zcoor,zpos);
600 zpos = zpos - zSenStrip/TMath::Cos(ang);
601 } while (zpos-stripWidth*TMath::Cos(ang)*0.5>-t);
604 ////////// Layers after strips /////////////////
605 // Al Layer thickness (2.3mm) factor 0.7
607 Float_t overSpace = fOverSpc;//cm
610 par[1] = 0.115*0.7; // factor 0.7
611 par[2] = (zFLTA *0.5);
612 ycoor = -yFLT/2 + overSpace + par[1];
613 gMC->Gsvolu("FPEA", "BOX ", idtmed[508], par, 3); // Al
614 gMC->Gspos ("FPEA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
615 par[2] = (zFLTB *0.5);
616 gMC->Gsvolu("FPEB", "BOX ", idtmed[508], par, 3); // Al
617 gMC->Gspos ("FPEB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
618 par[2] = (zFLTC *0.5);
619 gMC->Gsvolu("FPEC", "BOX ", idtmed[508], par, 3); // Al
620 gMC->Gspos ("FPEC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
623 // plexiglass thickness: 1.5 mm ; factor 0.3
626 par[1] = 0.075*0.3; // factor 0.3
627 par[2] = (zFLTA *0.5);
629 gMC->Gsvolu("FECA", "BOX ", idtmed[505], par, 3); // Plexigl.
630 gMC->Gspos ("FECA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
631 par[2] = (zFLTB *0.5);
632 gMC->Gsvolu("FECB", "BOX ", idtmed[505], par, 3); // Plexigl.
633 gMC->Gspos ("FECB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
634 par[2] = (zFLTC *0.5);
635 gMC->Gsvolu("FECC", "BOX ", idtmed[505], par, 3); // Plexigl.
636 gMC->Gspos ("FECC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
641 par[1] = (yFLT/2-ycoor-khAlWall)*0.5; // Aluminum layer considered (0.18 cm)
642 par[2] = (zFLTA *0.5);
644 gMC->Gsvolu("FAIA", "BOX ", idtmed[500], par, 3); // Air
645 gMC->Gspos ("FAIA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
646 par[2] = (zFLTB *0.5);
647 gMC->Gsvolu("FAIB", "BOX ", idtmed[500], par, 3); // Air
648 gMC->Gspos ("FAIB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
649 par[2] = (zFLTC *0.5);
650 gMC->Gsvolu("FAIC", "BOX ", idtmed[500], par, 3); // Air
651 gMC->Gspos ("FAIC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
654 // start with cards and cooling tubes
655 // finally, cards, cooling tubes and layer for thermal dispersion
657 // card volume definition
659 // see GEOM200 in GEANT manual
660 AliMatrix(idrotm[98], 90., 0., 90., 90., 0., 0.); // 0 deg
666 gMC->Gsvolu("FCAR", "BOX ", idtmed[504], cardpar, 3); // PCB Card
667 //alu plate volume definition
670 gMC->Gsvolu("FALP", "BOX ", idtmed[508], cardpar, 3); // Alu Plate
673 // central module positioning (FAIA)
674 Float_t cardpos[3], aplpos2, stepforcardA=6.625;
678 Float_t aplpos1 = -2.;
680 for (icard=0; icard<15; ++icard) {
681 cardpos[2]= cardpos[2]+stepforcardA;
682 aplpos2 = cardpos[2]+0.15;
683 gMC->Gspos("FCAR",icard,"FAIA",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
684 gMC->Gspos("FALP",icard,"FAIA",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
689 // intermediate module positioning (FAIB)
690 Float_t stepforcardB= 7.05;
692 for (icard=0; icard<19; ++icard) {
693 cardpos[2]= cardpos[2]+stepforcardB;
694 aplpos2 = cardpos[2]+0.15;
695 gMC->Gspos("FCAR",icard,"FAIB",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
696 gMC->Gspos("FALP",icard,"FAIB",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
700 // outer module positioning (FAIC)
701 Float_t stepforcardC= 8.45238;
703 for (icard=0; icard<20; ++icard) {
704 cardpos[2]= cardpos[2]+stepforcardC;
705 aplpos2 = cardpos[2]+0.15;
706 gMC->Gspos("FCAR",icard,"FAIC",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
707 gMC->Gspos("FALP",icard,"FAIC",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
710 // tube volume definition
715 gMC->Gsvolu("FTUB", "TUBE", idtmed[516], tubepar, 3); // cooling tubes (steel)
719 gMC->Gsvolu("FITU", "TUBE", idtmed[515], tubepar, 3); // cooling water
720 // positioning water tube into the steel one
721 gMC->Gspos("FITU",1,"FTUB",0.,0.,0.,0,"ONLY");
725 AliMatrix(idrotm[99], 180., 90., 90., 90., 90., 0.);
726 // central module positioning (FAIA)
727 Float_t tubepos[3], tdis=0.6;
729 tubepos[1]= cardpos[1];
730 tubepos[2]= -53.+tdis;
733 for (itub=0; itub<15; ++itub) {
734 tubepos[2]= tubepos[2]+stepforcardA;
735 gMC->Gspos("FTUB",itub,"FAIA",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
740 // intermediate module positioning (FAIB)
741 tubepos[2]= -70.5+tdis;
742 for (itub=0; itub<19; ++itub) {
743 tubepos[2]= tubepos[2]+stepforcardB;
744 gMC->Gspos("FTUB",itub,"FAIB",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
748 // outer module positioning (FAIC)
749 tubepos[2]= -88.75+tdis;
750 for (itub=0; itub<20; ++itub) {
751 tubepos[2]= tubepos[2]+stepforcardC;
752 gMC->Gspos("FTUB",itub,"FAIC",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
758 //_____________________________________________________________________________
759 void AliTOFv4T0::DrawModule() const
762 // Draw a shaded view of the Time Of Flight version 4
764 // Set everything unseen
765 gMC->Gsatt("*", "seen", -1);
767 // Set ALIC mother transparent
768 gMC->Gsatt("ALIC","SEEN",0);
770 // Set the volumes visible
771 gMC->Gsatt("ALIC","SEEN",0);
773 gMC->Gsatt("FTOA","SEEN",1);
774 gMC->Gsatt("FTOB","SEEN",1);
775 gMC->Gsatt("FTOC","SEEN",1);
776 gMC->Gsatt("FLTA","SEEN",1);
777 gMC->Gsatt("FLTB","SEEN",1);
778 gMC->Gsatt("FLTC","SEEN",1);
779 gMC->Gsatt("FPLA","SEEN",1);
780 gMC->Gsatt("FPLB","SEEN",1);
781 gMC->Gsatt("FPLC","SEEN",1);
782 gMC->Gsatt("FSTR","SEEN",1);
783 gMC->Gsatt("FPEA","SEEN",1);
784 gMC->Gsatt("FPEB","SEEN",1);
785 gMC->Gsatt("FPEC","SEEN",1);
787 gMC->Gsatt("FLZ1","SEEN",0);
788 gMC->Gsatt("FLZ2","SEEN",0);
789 gMC->Gsatt("FLZ3","SEEN",0);
790 gMC->Gsatt("FLX1","SEEN",0);
791 gMC->Gsatt("FLX2","SEEN",0);
792 gMC->Gsatt("FLX3","SEEN",0);
793 gMC->Gsatt("FPAD","SEEN",0);
795 gMC->Gdopt("hide", "on");
796 gMC->Gdopt("shad", "on");
797 gMC->Gsatt("*", "fill", 7);
798 gMC->SetClipBox(".");
799 gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
801 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .02, .02);
802 gMC->Gdhead(1111, "Time Of Flight");
803 gMC->Gdman(18, 4, "MAN");
804 gMC->Gdopt("hide","off");
806 //_____________________________________________________________________________
807 void AliTOFv4T0::DrawDetectorModules()
810 // Draw a shaded view of the TOF detector version 4
814 //Set ALIC mother transparent
815 gMC->Gsatt("ALIC","SEEN",0);
818 //Set volumes visible
821 // Level 1 for TOF volumes
822 gMC->Gsatt("B077","seen",0);
825 //==========> Level 2
827 gMC->Gsatt("B076","seen",-1); // all B076 sub-levels skipped -
828 gMC->Gsatt("B071","seen",0);
829 gMC->Gsatt("B074","seen",0);
830 gMC->Gsatt("B075","seen",0);
831 gMC->Gsatt("B080","seen",0); // B080 does not has sub-level
835 gMC->Gsatt("B063","seen",-1); // all B063 sub-levels skipped -
836 gMC->Gsatt("B065","seen",-1); // all B065 sub-levels skipped -
837 gMC->Gsatt("B067","seen",-1); // all B067 sub-levels skipped -
838 gMC->Gsatt("B069","seen",-1); // all B069 sub-levels skipped -
839 gMC->Gsatt("B056","seen",0); // B056 does not has sub-levels -
840 gMC->Gsatt("B059","seen",-1); // all B059 sub-levels skipped -
841 gMC->Gsatt("B072","seen",-1); // all B072 sub-levels skipped -
842 gMC->Gsatt("BTR1","seen",0); // BTR1 do not have sub-levels -
843 gMC->Gsatt("BTO1","seen",0);
847 gMC->Gsatt("BTR2","seen",0); // BTR2 does not has sub-levels -
848 gMC->Gsatt("BTO2","seen",0);
851 gMC->Gsatt("BTR3","seen",0); // BTR3 do not have sub-levels -
852 gMC->Gsatt("BTO3","seen",0);
854 // ==================> Level 3
855 // Level 3 of B071 / Level 2 of BTO1
856 gMC->Gsatt("FTOC","seen",-2);
857 gMC->Gsatt("FTOB","seen",-2);
858 gMC->Gsatt("FTOA","seen",-2);
860 // Level 3 of B074 / Level 2 of BTO2
861 // -> cfr previous settings
863 // Level 3 of B075 / Level 2 of BTO3
864 // -> cfr previous settings
866 gMC->Gdopt("hide","on");
867 gMC->Gdopt("shad","on");
868 gMC->Gsatt("*", "fill", 5);
869 gMC->SetClipBox(".");
870 gMC->SetClipBox("*", 0, 1000, 0, 1000, 0, 1000);
872 gMC->Gdraw("alic", 45, 40, 0, 10, 10, .015, .015);
873 gMC->Gdhead(1111,"TOF detector V1");
874 gMC->Gdman(18, 4, "MAN");
875 gMC->Gdopt("hide","off");
878 //_____________________________________________________________________________
879 void AliTOFv4T0::DrawDetectorStrips()
882 // Draw a shaded view of the TOF strips for version 4
885 //Set ALIC mother transparent
886 gMC->Gsatt("ALIC","SEEN",0);
889 //Set volumes visible
891 // Level 1 for TOF volumes
892 gMC->Gsatt("B077","seen",0);
894 //==========> Level 2
896 gMC->Gsatt("B076","seen",-1); // all B076 sub-levels skipped -
897 gMC->Gsatt("B071","seen",0);
898 gMC->Gsatt("B074","seen",0);
899 gMC->Gsatt("B075","seen",0);
900 gMC->Gsatt("B080","seen",0); // B080 does not has sub-level
903 gMC->Gsatt("B063","seen",-1); // all B063 sub-levels skipped -
904 gMC->Gsatt("B065","seen",-1); // all B065 sub-levels skipped -
905 gMC->Gsatt("B067","seen",-1); // all B067 sub-levels skipped -
906 gMC->Gsatt("B069","seen",-1); // all B069 sub-levels skipped -
907 gMC->Gsatt("B056","seen",0); // B056 does not has sub-levels -
908 gMC->Gsatt("B059","seen",-1); // all B059 sub-levels skipped -
909 gMC->Gsatt("B072","seen",-1); // all B072 sub-levels skipped -
910 gMC->Gsatt("BTR1","seen",0); // BTR1 do not have sub-levels -
911 gMC->Gsatt("BTO1","seen",0);
913 // ==================> Level 3
914 // Level 3 of B071 / Level 2 of BTO1
915 gMC->Gsatt("FTOC","seen",0);
916 gMC->Gsatt("FTOB","seen",0);
917 gMC->Gsatt("FTOA","seen",0);
919 // Level 3 of B074 / Level 2 of BTO2
920 // -> cfr previous settings
922 // Level 3 of B075 / Level 2 of BTO3
923 // -> cfr previous settings
926 // ==========================> Level 4
927 // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOC
928 gMC->Gsatt("FLTC","seen",0);
929 // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOB
930 gMC->Gsatt("FLTB","seen",0);
931 // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOA
932 gMC->Gsatt("FLTA","seen",0);
934 // Level 4 of B074 / Level 3 of BTO2 / Level 2 of FTOC
935 // -> cfr previous settings
936 // Level 4 of B074 / Level 3 of BTO2 / Level 2 of FTOB
937 // -> cfr previous settings
939 // Level 4 of B075 / Level 3 of BTO3 / Level 2 of FTOC
940 // -> cfr previous settings
942 //======================================> Level 5
943 // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOC / Level 2 of FLTC
944 gMC->Gsatt("FALC","seen",0); // no children for FALC
945 gMC->Gsatt("FSTR","seen",-2);
946 gMC->Gsatt("FPEC","seen",0); // no children for FPEC
947 gMC->Gsatt("FECC","seen",0); // no children for FECC
948 gMC->Gsatt("FWAC","seen",0); // no children for FWAC
949 gMC->Gsatt("FAIC","seen",0); // no children for FAIC
951 // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOB / Level 2 of FLTB
952 gMC->Gsatt("FALB","seen",0); // no children for FALB
953 //--> gMC->Gsatt("FSTR","seen",-2);
956 // -> cfr previous settings
957 gMC->Gsatt("FPEB","seen",0); // no children for FPEB
958 gMC->Gsatt("FECB","seen",0); // no children for FECB
959 gMC->Gsatt("FWAB","seen",0); // no children for FWAB
960 gMC->Gsatt("FAIB","seen",0); // no children for FAIB
962 // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOA / Level 2 of FLTA
963 gMC->Gsatt("FALA","seen",0); // no children for FALB
964 //--> gMC->Gsatt("FSTR","seen",-2);
965 // -> cfr previous settings
966 gMC->Gsatt("FPEA","seen",0); // no children for FPEA
967 gMC->Gsatt("FECA","seen",0); // no children for FECA
968 gMC->Gsatt("FWAA","seen",0); // no children for FWAA
969 gMC->Gsatt("FAIA","seen",0); // no children for FAIA
972 gMC->Gsatt("BTR2","seen",0); // BTR2 does not has sub-levels -
973 gMC->Gsatt("BTO2","seen",0);
976 gMC->Gsatt("BTR3","seen",0); // BTR3 do not have sub-levels -
977 gMC->Gsatt("BTO3","seen",0);
979 // for others Level 5, cfr. previous settings
981 gMC->Gdopt("hide","on");
982 gMC->Gdopt("shad","on");
983 gMC->Gsatt("*", "fill", 5);
984 gMC->SetClipBox(".");
985 gMC->SetClipBox("*", 0, 1000, 0, 1000, 0, 1000);
987 gMC->Gdraw("alic", 45, 40, 0, 10, 10, .015, .015);
988 gMC->Gdhead(1111,"TOF Strips V1");
989 gMC->Gdman(18, 4, "MAN");
990 gMC->Gdopt("hide","off");
993 //_____________________________________________________________________________
994 void AliTOFv4T0::CreateMaterials()
997 // Define materials for the Time Of Flight
999 AliTOF::CreateMaterials();
1002 //_____________________________________________________________________________
1003 void AliTOFv4T0::Init()
1006 // Initialise the detector after the geometry has been defined
1009 printf("%s: **************************************"
1011 "**************************************\n",ClassName());
1012 printf("\n%s: Version 4 of TOF initialing, "
1013 "symmetric TOF - Full Coverage version\n",ClassName());
1018 fIdFTOA = gMC->VolId("FTOA");
1019 fIdFTOB = gMC->VolId("FTOB");
1020 fIdFTOC = gMC->VolId("FTOC");
1021 fIdFLTA = gMC->VolId("FLTA");
1022 fIdFLTB = gMC->VolId("FLTB");
1023 fIdFLTC = gMC->VolId("FLTC");
1026 printf("%s: **************************************"
1028 "**************************************\n",ClassName());
1032 //_____________________________________________________________________________
1033 void AliTOFv4T0::StepManager()
1036 // Procedure called at each step in the Time Of Flight
1038 TLorentzVector mom, pos;
1039 Float_t xm[3],pm[3],xpad[3],ppad[3];
1040 Float_t hits[14],phi,phid,z;
1042 Int_t sector, plate, padx, padz, strip;
1043 Int_t copy, padzid, padxid, stripid, i;
1044 Int_t *idtmed = fIdtmed->GetArray()-499;
1045 Float_t incidenceAngle;
1047 if(gMC->GetMedium()==idtmed[513] &&
1048 gMC->IsTrackEntering() && gMC->TrackCharge()
1049 && gMC->CurrentVolID(copy)==fIdSens)
1051 // getting information about hit volumes
1053 padzid=gMC->CurrentVolOffID(2,copy);
1056 padxid=gMC->CurrentVolOffID(1,copy);
1059 stripid=gMC->CurrentVolOffID(4,copy);
1062 gMC->TrackPosition(pos);
1063 gMC->TrackMomentum(mom);
1065 // Double_t NormPos=1./pos.Rho();
1066 Double_t normMom=1./mom.Rho();
1068 // getting the cohordinates in pad ref system
1069 xm[0] = (Float_t)pos.X();
1070 xm[1] = (Float_t)pos.Y();
1071 xm[2] = (Float_t)pos.Z();
1073 pm[0] = (Float_t)mom.X()*normMom;
1074 pm[1] = (Float_t)mom.Y()*normMom;
1075 pm[2] = (Float_t)mom.Z()*normMom;
1077 gMC->Gmtod(xm,xpad,1);
1078 gMC->Gmtod(pm,ppad,2);
1080 incidenceAngle = TMath::ACos(ppad[1])*kRaddeg;
1085 if (TMath::Abs(z) <= fZlenA*0.5) plate = 3;
1086 if (z < (fZlenA*0.5+fZlenB) &&
1087 z > fZlenA*0.5) plate = 4;
1088 if (z >-(fZlenA*0.5+fZlenB) &&
1089 z < -fZlenA*0.5) plate = 2;
1090 if (z > (fZlenA*0.5+fZlenB)) plate = 5;
1091 if (z <-(fZlenA*0.5+fZlenB)) plate = 1;
1094 phid = phi*kRaddeg+180.;
1095 sector = Int_t (phid/20.);
1103 hits[6] = mom.Rho();
1108 hits[11]= incidenceAngle;
1109 hits[12]= gMC->Edep();
1110 hits[13]= gMC->TrackLength();
1118 AddT0Hit(gAlice->CurrentTrack(),vol, hits);