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 2 of the Time Of Flight //
23 // VERSION WITH 5 MODULES AND TILTED STRIPS
25 // HOLES FOR PHOS AND RICH DETECTOR
32 // University of Salerno - Italy
35 // University of Bologna - Italy
40 <img src="picts/AliTOFv2Class.gif">
44 ///////////////////////////////////////////////////////////////////////////////
46 #include <Riostream.h>
50 #include <TGeometry.h>
51 #include <TLorentzVector.h>
54 #include <TVirtualMC.h>
63 //_____________________________________________________________________________
67 // Default constructor
71 //_____________________________________________________________________________
72 AliTOFv2::AliTOFv2(const char *name, const char *title)
76 // Standard constructor
79 // Check that FRAME is there otherwise we have no place where to
81 AliModule* frame=gAlice->GetModule("FRAME");
83 Error("Ctor","TOF needs FRAME to be present\n");
86 if(frame->IsVersion()!=1) {
87 Error("Ctor","FRAME version 1 needed with this version of TOF\n");
93 //____________________________________________________________________________
95 void AliTOFv2::BuildGeometry()
98 // Build TOF ROOT geometry for the ALICE event display
101 const int kColorTOF = 27;
104 top = gAlice->GetGeometry()->GetNode("alice");
106 // Position the different copies
107 const Float_t krTof =(fRmax+fRmin)/2;
108 const Float_t khTof = fRmax-fRmin;
109 const Int_t kNTof = fNTof;
110 const Float_t kPi = TMath::Pi();
111 const Float_t kangle = 2*kPi/kNTof;
114 // define offset for nodes
115 Float_t zOffsetC = fZtof - fZlenC*0.5;
116 Float_t zOffsetB = fZtof - fZlenC - fZlenB*0.5;
117 Float_t zOffsetA = 0.;
118 // Define TOF basic volume
120 char nodeName0[6], nodeName1[6], nodeName2[6];
121 char nodeName3[6], nodeName4[6], rotMatNum[6];
123 new TBRIK("S_TOF_C","TOF box","void",
124 fStripLn*0.5,khTof*0.5,fZlenC*0.5);
125 new TBRIK("S_TOF_B","TOF box","void",
126 fStripLn*0.5,khTof*0.5,fZlenB*0.5);
127 new TBRIK("S_TOF_A","TOF box","void",
128 fStripLn*0.5,khTof*0.5,fZlenA*0.5);
130 for (Int_t nodeNum=1;nodeNum<19;nodeNum++){
133 sprintf(rotMatNum,"rot50%i",nodeNum);
134 sprintf(nodeName0,"FTO00%i",nodeNum);
135 sprintf(nodeName1,"FTO10%i",nodeNum);
136 sprintf(nodeName2,"FTO20%i",nodeNum);
137 sprintf(nodeName3,"FTO30%i",nodeNum);
138 sprintf(nodeName4,"FTO40%i",nodeNum);
141 sprintf(rotMatNum,"rot5%i",nodeNum);
142 sprintf(nodeName0,"FTO0%i",nodeNum);
143 sprintf(nodeName1,"FTO1%i",nodeNum);
144 sprintf(nodeName2,"FTO2%i",nodeNum);
145 sprintf(nodeName3,"FTO3%i",nodeNum);
146 sprintf(nodeName4,"FTO4%i",nodeNum);
149 new TRotMatrix(rotMatNum,rotMatNum,90,-20*nodeNum,90,90-20*nodeNum,0,0);
150 ang = (4.5-nodeNum) * kangle;
153 node = new TNode(nodeName0,nodeName0,"S_TOF_C",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),zOffsetC,rotMatNum);
154 node->SetLineColor(kColorTOF);
158 node = new TNode(nodeName1,nodeName1,"S_TOF_C",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),-zOffsetC,rotMatNum);
159 node->SetLineColor(kColorTOF);
161 if (nodeNum !=1 && nodeNum!=17 && nodeNum !=18)
164 node = new TNode(nodeName2,nodeName2,"S_TOF_B",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),zOffsetB,rotMatNum);
165 node->SetLineColor(kColorTOF);
169 node = new TNode(nodeName3,nodeName3,"S_TOF_B",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),-zOffsetB,rotMatNum);
170 node->SetLineColor(kColorTOF);
172 } // Holes for RICH detector
174 if ((nodeNum<7 || nodeNum>11) && nodeNum !=1 && nodeNum!=17 && nodeNum !=18)
177 node = new TNode(nodeName4,nodeName4,"S_TOF_A",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),zOffsetA,rotMatNum);
178 node->SetLineColor(kColorTOF);
180 } // Holes for PHOS detector (+ Holes for RICH detector, central part)
181 } // end loop on nodeNum
185 //_____________________________________________________________________________
186 void AliTOFv2::CreateGeometry()
189 // Create geometry for Time Of Flight version 0
193 <img src="picts/AliTOFv2.gif">
197 // Creates common geometry
199 AliTOF::CreateGeometry();
202 //_____________________________________________________________________________
203 void AliTOFv2::TOFpc(Float_t xtof, Float_t ytof, Float_t zlenC,
204 Float_t zlenB, Float_t zlenA, Float_t ztof0)
207 // Definition of the Time Of Fligh Resistive Plate Chambers
208 // xFLT, yFLT, zFLT - sizes of TOF modules (large)
210 Float_t ycoor, zcoor;
212 Int_t *idtmed = fIdtmed->GetArray()-499;
215 Float_t hTof = fRmax-fRmin;
217 Float_t radius = fRmin+2.;//cm
221 par[2] = zlenC * 0.5;
222 gMC->Gsvolu("FTOC", "BOX ", idtmed[506], par, 3);
223 par[2] = zlenB * 0.5;
224 gMC->Gsvolu("FTOB", "BOX ", idtmed[506], par, 3);
225 par[2] = zlenA * 0.5;
226 gMC->Gsvolu("FTOA", "BOX ", idtmed[506], par, 3);
229 // Positioning of modules
231 Float_t zcor1 = ztof0 - zlenC*0.5;
232 Float_t zcor2 = ztof0 - zlenC - zlenB*0.5;
235 AliMatrix(idrotm[0], 90., 0., 0., 0., 90,-90.);
236 AliMatrix(idrotm[1], 90.,180., 0., 0., 90, 90.);
237 gMC->Gspos("FTOC", 1, "BTO1", 0, zcor1, 0, idrotm[0], "ONLY");
238 gMC->Gspos("FTOC", 2, "BTO1", 0, -zcor1, 0, idrotm[1], "ONLY");
239 gMC->Gspos("FTOC", 1, "BTO2", 0, zcor1, 0, idrotm[0], "ONLY");
240 gMC->Gspos("FTOC", 2, "BTO2", 0, -zcor1, 0, idrotm[1], "ONLY");
241 gMC->Gspos("FTOC", 1, "BTO3", 0, zcor1, 0, idrotm[0], "ONLY");
242 gMC->Gspos("FTOC", 2, "BTO3", 0, -zcor1, 0, idrotm[1], "ONLY");
244 gMC->Gspos("FTOB", 1, "BTO1", 0, zcor2, 0, idrotm[0], "ONLY");
245 gMC->Gspos("FTOB", 2, "BTO1", 0, -zcor2, 0, idrotm[1], "ONLY");
246 gMC->Gspos("FTOB", 1, "BTO2", 0, zcor2, 0, idrotm[0], "ONLY");
247 gMC->Gspos("FTOB", 2, "BTO2", 0, -zcor2, 0, idrotm[1], "ONLY");
249 gMC->Gspos("FTOA", 0, "BTO1", 0, zcor3, 0, idrotm[0], "ONLY");
251 Float_t db = 0.5;//cm
252 Float_t xFLT, xFST, yFLT, zFLTA, zFLTB, zFLTC;
260 xFST = xFLT-fDeadBndX*2;//cm
262 // Sizes of MRPC pads
264 Float_t yPad = 0.505;//cm
266 // Large not sensitive volumes with Insensitive Freon
272 <<": ************************* TOF geometry **************************"
275 par[2] = (zFLTA *0.5);
276 gMC->Gsvolu("FLTA", "BOX ", idtmed[512], par, 3); // Insensitive Freon
277 gMC->Gspos ("FLTA", 0, "FTOA", 0., 0., 0., 0, "ONLY");
279 par[2] = (zFLTB * 0.5);
280 gMC->Gsvolu("FLTB", "BOX ", idtmed[512], par, 3); // Insensitive Freon
281 gMC->Gspos ("FLTB", 0, "FTOB", 0., 0., 0., 0, "ONLY");
283 par[2] = (zFLTC * 0.5);
284 gMC->Gsvolu("FLTC", "BOX ", idtmed[512], par, 3); // Insensitive Freon
285 gMC->Gspos ("FLTC", 0, "FTOC", 0., 0., 0., 0, "ONLY");
287 ///// Layers of Aluminum before and after detector /////
288 ///// Aluminum Box for Modules (1.8 mm thickness) /////
289 ///// lateral walls not simulated for the time being
290 //const Float_t khAlWall = 0.18;
292 const Float_t khAlWall = 0.11;
294 par[1] = khAlWall/2.;//cm
295 ycoor = -yFLT/2 + par[1];
296 par[2] = (zFLTA *0.5);
297 gMC->Gsvolu("FALA", "BOX ", idtmed[508], par, 3); // Alluminium
298 gMC->Gspos ("FALA", 1, "FLTA", 0., ycoor, 0., 0, "ONLY");
299 gMC->Gspos ("FALA", 2, "FLTA", 0.,-ycoor, 0., 0, "ONLY");
300 par[2] = (zFLTB *0.5);
301 gMC->Gsvolu("FALB", "BOX ", idtmed[508], par, 3); // Alluminium
302 gMC->Gspos ("FALB", 1, "FLTB", 0., ycoor, 0., 0, "ONLY");
303 gMC->Gspos ("FALB", 2, "FLTB", 0.,-ycoor, 0., 0, "ONLY");
304 par[2] = (zFLTC *0.5);
305 gMC->Gsvolu("FALC", "BOX ", idtmed[508], par, 3); // Alluminium
306 gMC->Gspos ("FALC", 1, "FLTC", 0., ycoor, 0., 0, "ONLY");
307 gMC->Gspos ("FALC", 2, "FLTC", 0.,-ycoor, 0., 0, "ONLY");
309 ///////////////// Detector itself //////////////////////
311 const Float_t kdeadBound = fDeadBndZ; //cm non-sensitive between the pad edge
312 //and the boundary of the strip
313 const Int_t knx = fNpadX; // number of pads along x
314 const Int_t knz = fNpadZ; // number of pads along z
315 const Float_t kspace = fSpace; //cm distance from the front plate of the box
317 Float_t zSenStrip = fZpad*fNpadZ;//cm
318 Float_t stripWidth = zSenStrip + 2*kdeadBound;
322 par[2] = stripWidth*0.5;
324 // new description for strip volume -double stack strip-
325 // -- all constants are expressed in cm
326 // heigth of different layers
327 const Float_t khhony = 0.8 ; // heigth of HONY Layer
328 const Float_t khpcby = 0.08 ; // heigth of PCB Layer
329 const Float_t khmyly = 0.035 ; // heigth of MYLAR Layer
330 const Float_t khgraphy = 0.02 ; // heigth of GRAPHITE Layer
331 const Float_t khglasseiy = 0.135; // 0.6 Ext. Glass + 1.1 i.e. (Int. Glass/2) (mm)
332 const Float_t khsensmy = 0.11 ; // heigth of Sensitive Freon Mixture
333 const Float_t kwsensmz = 2*3.5 ; // cm
334 const Float_t klsensmx = 48*2.5; // cm
335 const Float_t kwpadz = 3.5; // cm z dimension of the FPAD volume
336 const Float_t klpadx = 2.5; // cm x dimension of the FPAD volume
338 // heigth of the FSTR Volume (the strip volume)
339 const Float_t khstripy = 2*khhony+3*khpcby+4*(khmyly+khgraphy+khglasseiy)+2*khsensmy;
340 // width of the FSTR Volume (the strip volume)
341 const Float_t kwstripz = 10.;
342 // length of the FSTR Volume (the strip volume)
343 const Float_t klstripx = 122.;
345 Float_t parfp[3]={klstripx*0.5,khstripy*0.5,kwstripz*0.5};
346 // coordinates of the strip center in the strip reference frame; used for positioning
347 // internal strip volumes
348 Float_t posfp[3]={0.,0.,0.};
351 // FSTR volume definition and filling this volume with non sensitive Gas Mixture
352 gMC->Gsvolu("FSTR","BOX",idtmed[512],parfp,3);
353 //-- HONY Layer definition
355 parfp[1] = khhony*0.5;
357 gMC->Gsvolu("FHON","BOX",idtmed[503],parfp,3);
358 // positioning 2 HONY Layers on FSTR volume
360 posfp[1]=-khstripy*0.5+parfp[1];
361 gMC->Gspos("FHON",1,"FSTR",0., posfp[1],0.,0,"ONLY");
362 gMC->Gspos("FHON",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
364 //-- PCB Layer definition
365 parfp[1] = khpcby*0.5;
366 gMC->Gsvolu("FPCB","BOX",idtmed[504],parfp,3);
367 // positioning 2 PCB Layers on FSTR volume
368 posfp[1]=-khstripy*0.5+khhony+parfp[1];
369 gMC->Gspos("FPCB",1,"FSTR",0., posfp[1],0.,0,"ONLY");
370 gMC->Gspos("FPCB",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
371 // positioning the central PCB layer
372 gMC->Gspos("FPCB",3,"FSTR",0.,0.,0.,0,"ONLY");
376 //-- MYLAR Layer definition
377 parfp[1] = khmyly*0.5;
378 gMC->Gsvolu("FMYL","BOX",idtmed[511],parfp,3);
379 // positioning 2 MYLAR Layers on FSTR volume
380 posfp[1] = -khstripy*0.5+khhony+khpcby+parfp[1];
381 gMC->Gspos("FMYL",1,"FSTR",0., posfp[1],0.,0,"ONLY");
382 gMC->Gspos("FMYL",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
383 // adding further 2 MYLAR Layers on FSTR volume
384 posfp[1] = khpcby*0.5+parfp[1];
385 gMC->Gspos("FMYL",3,"FSTR",0., posfp[1],0.,0,"ONLY");
386 gMC->Gspos("FMYL",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
389 //-- Graphite Layer definition
390 parfp[1] = khgraphy*0.5;
391 gMC->Gsvolu("FGRP","BOX",idtmed[502],parfp,3);
392 // positioning 2 Graphite Layers on FSTR volume
393 posfp[1] = -khstripy*0.5+khhony+khpcby+khmyly+parfp[1];
394 gMC->Gspos("FGRP",1,"FSTR",0., posfp[1],0.,0,"ONLY");
395 gMC->Gspos("FGRP",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
396 // adding further 2 Graphite Layers on FSTR volume
397 posfp[1] = khpcby*0.5+khmyly+parfp[1];
398 gMC->Gspos("FGRP",3,"FSTR",0., posfp[1],0.,0,"ONLY");
399 gMC->Gspos("FGRP",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
402 //-- Glass (EXT. +Semi INT.) Layer definition
403 parfp[1] = khglasseiy*0.5;
404 gMC->Gsvolu("FGLA","BOX",idtmed[514],parfp,3);
405 // positioning 2 Glass Layers on FSTR volume
406 posfp[1] = -khstripy*0.5+khhony+khpcby+khmyly+khgraphy+parfp[1];
407 gMC->Gspos("FGLA",1,"FSTR",0., posfp[1],0.,0,"ONLY");
408 gMC->Gspos("FGLA",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
409 // adding further 2 Glass Layers on FSTR volume
410 posfp[1] = khpcby*0.5+khmyly+khgraphy+parfp[1];
411 gMC->Gspos("FGLA",3,"FSTR",0., posfp[1],0.,0,"ONLY");
412 gMC->Gspos("FGLA",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
415 //-- Sensitive Mixture Layer definition
416 parfp[0] = klsensmx*0.5;
417 parfp[1] = khsensmy*0.5;
418 parfp[2] = kwsensmz*0.5;
419 gMC->Gsvolu("FSEN","BOX",idtmed[513],parfp,3);
420 gMC->Gsvolu("FNSE","BOX",idtmed[512],parfp,3);
421 // positioning 2 gas Layers on FSTR volume
422 // the upper is insensitive freon
423 // while the remaining is sensitive
424 posfp[1] = khpcby*0.5+khmyly+khgraphy+khglasseiy+parfp[1];
425 gMC->Gspos("FNSE",0,"FSTR", 0., posfp[1],0.,0,"ONLY");
426 gMC->Gspos("FSEN",0,"FSTR", 0.,-posfp[1],0.,0,"ONLY");
428 // dividing FSEN along z in knz=2 and along x in knx=48
429 gMC->Gsdvn("FSEZ","FSEN",knz,3);
430 gMC->Gsdvn("FSEX","FSEZ",knx,1);
432 // FPAD volume definition
433 parfp[0] = klpadx*0.5;
434 parfp[1] = khsensmy*0.5;
435 parfp[2] = kwpadz*0.5;
436 gMC->Gsvolu("FPAD","BOX",idtmed[513],parfp,3);
437 // positioning the FPAD volumes on previous divisions
438 gMC->Gspos("FPAD",0,"FSEX",0.,0.,0.,0,"ONLY");
440 //// Positioning the Strips (FSTR) in the FLT volumes /////
444 Float_t t = zFLTC+zFLTB+zFLTA*0.5+ 2*db;//Half Width of Barrel
446 Float_t gap = fGapA+0.5; //cm updated distance between the strip axis
452 ycoor = -14.5 + kspace ; //2 cm over front plate
454 AliMatrix (idrotm[0], 90., 0.,90.,90.,0., 90.);
455 gMC->Gspos("FSTR",j,"FLTA",0.,ycoor, 0.,idrotm[0],"ONLY");
458 printf("%s: %f, St. %2i, Pl.3 ",ClassName(),ang*kRaddeg,i);
459 printf("%s: y = %f, z = %f, zpos = %f \n",ClassName(),ycoor,zcoor,zpos);
464 Int_t upDown = -1; // upDown=-1 -> Upper strip
465 // upDown=+1 -> Lower strip
467 ang = atan(zcoor/radius);
469 AliMatrix (idrotm[nrot], 90., 0.,90.-ang,90.,-ang, 90.);
470 AliMatrix (idrotm[nrot+1],90.,180.,90.+ang,90., ang, 90.);
472 ycoor = -14.5+ kspace; //2 cm over front plate
473 ycoor += (1-(upDown+1)/2)*gap;
474 gMC->Gspos("FSTR",j ,"FLTA",0.,ycoor, zcoor,idrotm[nrot], "ONLY");
475 gMC->Gspos("FSTR",j+1,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY");
478 printf("%s: %f, St. %2i, Pl.3 ",ClassName(),ang*kRaddeg,i);
479 printf("%s: y = %f, z = %f, zpos = %f \n",ClassName(),ycoor,zcoor,zpos);
483 upDown*= -1; // Alternate strips
484 zcoor = zcoor-(zSenStrip/2)/TMath::Cos(ang)-
485 upDown*gap*TMath::Tan(ang)-
486 (zSenStrip/2)/TMath::Cos(ang);
487 } while (zcoor-(stripWidth/2)*TMath::Cos(ang)>-t+zFLTC+zFLTB+db*2);
489 zcoor = zcoor+(zSenStrip/2)/TMath::Cos(ang)+
490 upDown*gap*TMath::Tan(ang)+
491 (zSenStrip/2)/TMath::Cos(ang);
494 zcoor = zcoor-(zSenStrip/2)/TMath::Cos(ang)-
495 upDown*gap*TMath::Tan(ang)-
496 (zSenStrip/2)/TMath::Cos(ang);
498 ang = atan(zcoor/radius);
500 AliMatrix (idrotm[nrot], 90., 0.,90.-ang,90.,-ang, 90.);
501 AliMatrix (idrotm[nrot+1],90.,180.,90.+ang,90., ang, 90.);
504 ycoor = -14.5+ kspace; //2 cm over front plate
505 ycoor += (1-(upDown+1)/2)*gap;
506 gMC->Gspos("FSTR",j ,"FLTA",0.,ycoor, zcoor,idrotm[nrot], "ONLY");
507 gMC->Gspos("FSTR",j+1,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY");
510 printf("%s: %f, St. %2i, Pl.3 ",ClassName(),ang*kRaddeg,i);
511 printf("%s: y = %f, z = %f, zpos = %f \n",ClassName(),ycoor,zcoor,zpos);
514 ycoor = -hTof/2.+ kspace;//2 cm over front plate
521 Float_t deadRegion = 1.0;//cm
523 zpos = zcoor - (zSenStrip/2)/TMath::Cos(ang)-
524 upDown*gap*TMath::Tan(ang)-
525 (zSenStrip/2)/TMath::Cos(ang)-
526 deadRegion/TMath::Cos(ang);
528 ang = atan(zpos/radius);
530 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
532 ycoor = -hTof*0.5+ kspace ; //2 cm over front plate
533 ycoor += (1-(upDown+1)/2)*gap;
534 zcoor = zpos+(zFLTA*0.5+zFLTB*0.5+db); // Moves to the system of the modulus FLTB
535 gMC->Gspos("FSTR",i, "FLTB", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
538 printf("%s: %f, St. %2i, Pl.4 ",ClassName(),ang*kRaddeg,i);
539 printf("%s: y = %f, z = %f, zpos = %f \n",ClassName(),ycoor,zcoor,zpos);
546 zpos = zpos - (zSenStrip/2)/TMath::Cos(ang)-
547 upDown*gap*TMath::Tan(ang)-
548 (zSenStrip/2)/TMath::Cos(ang);
549 ang = atan(zpos/radius);
551 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
553 Float_t deltaSpaceinB=-0.5; // [cm] to avoid overlaps with the end of freon frame
554 Float_t deltaGapinB=0.5; // [cm] to avoid overlaps in between initial strips
555 ycoor = -hTof*0.5+ kspace+deltaSpaceinB ; //2 cm over front plate
556 ycoor += (1-(upDown+1)/2)*(gap+deltaGapinB);
557 zcoor = zpos+(zFLTA*0.5+zFLTB*0.5+db); // Moves to the system of the modulus FLTB
558 gMC->Gspos("FSTR",i, "FLTB", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
561 printf("%s: %f, St. %2i, Pl.4 ",ClassName(),ang*kRaddeg,i);
562 printf("%s: y = %f, z = %f, zpos = %f \n",ClassName(),ycoor,zcoor,zpos);
567 } while (TMath::Abs(ang*kRaddeg)<22.5);
568 //till we reach a tilting angle of 22.5 degrees
570 ycoor = -hTof*0.5+ kspace ; //2 cm over front plate
571 zpos = zpos - zSenStrip/TMath::Cos(ang);
572 // this avoid overlaps in between outer strips in plate B
573 Float_t deltaMovingUp=0.8; // [cm]
574 Float_t deltaMovingDown=-0.5; // [cm]
577 ang = atan(zpos/radius);
579 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
581 zcoor = zpos+(zFLTB/2+zFLTA/2+db);
582 gMC->Gspos("FSTR",i, "FLTB", 0., ycoor+deltaMovingDown+deltaMovingUp, zcoor,idrotm[nrot], "ONLY");
583 deltaMovingUp+=0.8; // update delta moving toward the end of the plate
584 zpos = zpos - zSenStrip/TMath::Cos(ang);
586 printf("%s: %f, St. %2i, Pl.4 ",ClassName(),ang*kRaddeg,i);
587 printf("%s: y = %f, z = %f, zpos = %f \n",ClassName(),ycoor,zcoor,zpos);
591 } while (zpos-stripWidth*0.5/TMath::Cos(ang)>-t+zFLTC+db);
595 zpos = zpos + zSenStrip/TMath::Cos(ang);
597 zpos = zpos - (zSenStrip/2)/TMath::Cos(ang)+
599 (zSenStrip/2)/TMath::Cos(ang);
603 Float_t deltaGap=-2.5; // [cm] update distance from strip center and plate
604 ycoor= -hTof*0.5+kspace+gap+deltaGap;
608 ang = atan(zpos/radius);
610 AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
612 zcoor = zpos+(zFLTC*0.5+zFLTB+zFLTA*0.5+db*2);
613 gMC->Gspos("FSTR",i, "FLTC", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
616 printf("%s: %f, St. %2i, Pl.5 ",ClassName(),ang*kRaddeg,i);
617 printf("%s: y = %f, z = %f, zpos = %f \n",ClassName(),ycoor,zcoor,zpos);
620 zpos = zpos - zSenStrip/TMath::Cos(ang);
621 } while (zpos-stripWidth*TMath::Cos(ang)*0.5>-t);
624 ////////// Layers after strips /////////////////
625 // Al Layer thickness (2.3mm) factor 0.7
627 Float_t overSpace = fOverSpc;//cm
630 par[1] = 0.115*0.7; // factor 0.7
631 par[2] = (zFLTA *0.5);
632 ycoor = -yFLT/2 + overSpace + par[1];
633 gMC->Gsvolu("FPEA", "BOX ", idtmed[508], par, 3); // Al
634 gMC->Gspos ("FPEA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
635 par[2] = (zFLTB *0.5);
636 gMC->Gsvolu("FPEB", "BOX ", idtmed[508], par, 3); // Al
637 gMC->Gspos ("FPEB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
638 par[2] = (zFLTC *0.5);
639 gMC->Gsvolu("FPEC", "BOX ", idtmed[508], par, 3); // Al
640 gMC->Gspos ("FPEC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
643 // plexiglass thickness: 1.5 mm ; factor 0.3
646 par[1] = 0.075*0.3; // factor 0.3
647 par[2] = (zFLTA *0.5);
649 gMC->Gsvolu("FECA", "BOX ", idtmed[505], par, 3); // Plexigl.
650 gMC->Gspos ("FECA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
651 par[2] = (zFLTB *0.5);
652 gMC->Gsvolu("FECB", "BOX ", idtmed[505], par, 3); // Plexigl.
653 gMC->Gspos ("FECB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
654 par[2] = (zFLTC *0.5);
655 gMC->Gsvolu("FECC", "BOX ", idtmed[505], par, 3); // Plexigl.
656 gMC->Gspos ("FECC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
661 par[1] = (yFLT/2-ycoor-khAlWall)*0.5; // Aluminum layer considered (0.18 cm)
662 par[2] = (zFLTA *0.5);
664 gMC->Gsvolu("FAIA", "BOX ", idtmed[500], par, 3); // Air
665 gMC->Gspos ("FAIA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
666 par[2] = (zFLTB *0.5);
667 gMC->Gsvolu("FAIB", "BOX ", idtmed[500], par, 3); // Air
668 gMC->Gspos ("FAIB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
669 par[2] = (zFLTC *0.5);
670 gMC->Gsvolu("FAIC", "BOX ", idtmed[500], par, 3); // Air
671 gMC->Gspos ("FAIC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
674 // start with cards and cooling tubes
675 // finally, cards, cooling tubes and layer for thermal dispersion
677 // card volume definition
679 // see GEOM200 in GEANT manual
680 AliMatrix(idrotm[98], 90., 0., 90., 90., 0., 0.); // 0 deg
686 gMC->Gsvolu("FCAR", "BOX ", idtmed[504], cardpar, 3); // PCB Card
687 //alu plate volume definition
690 gMC->Gsvolu("FALP", "BOX ", idtmed[508], cardpar, 3); // Alu Plate
693 // central module positioning (FAIA)
694 Float_t cardpos[3], aplpos2, stepforcardA=6.625;
698 Float_t aplpos1 = -2.;
700 for (icard=0; icard<15; ++icard) {
701 cardpos[2]= cardpos[2]+stepforcardA;
702 aplpos2 = cardpos[2]+0.15;
703 gMC->Gspos("FCAR",icard,"FAIA",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
704 gMC->Gspos("FALP",icard,"FAIA",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
709 // intermediate module positioning (FAIB)
710 Float_t stepforcardB= 7.05;
712 for (icard=0; icard<19; ++icard) {
713 cardpos[2]= cardpos[2]+stepforcardB;
714 aplpos2 = cardpos[2]+0.15;
715 gMC->Gspos("FCAR",icard,"FAIB",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
716 gMC->Gspos("FALP",icard,"FAIB",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
720 // outer module positioning (FAIC)
721 Float_t stepforcardC= 8.45238;
723 for (icard=0; icard<20; ++icard) {
724 cardpos[2]= cardpos[2]+stepforcardC;
725 aplpos2 = cardpos[2]+0.15;
726 gMC->Gspos("FCAR",icard,"FAIC",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
727 gMC->Gspos("FALP",icard,"FAIC",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
730 // tube volume definition
735 gMC->Gsvolu("FTUB", "TUBE", idtmed[516], tubepar, 3); // cooling tubes (steel)
739 gMC->Gsvolu("FITU", "TUBE", idtmed[515], tubepar, 3); // cooling water
740 // positioning water tube into the steel one
741 gMC->Gspos("FITU",1,"FTUB",0.,0.,0.,0,"ONLY");
745 AliMatrix(idrotm[99], 180., 90., 90., 90., 90., 0.);
746 // central module positioning (FAIA)
747 Float_t tubepos[3], tdis=0.6;
749 tubepos[1]= cardpos[1];
750 tubepos[2]= -53.+tdis;
753 for (itub=0; itub<15; ++itub) {
754 tubepos[2]= tubepos[2]+stepforcardA;
755 gMC->Gspos("FTUB",itub,"FAIA",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
760 // intermediate module positioning (FAIB)
761 tubepos[2]= -70.5+tdis;
762 for (itub=0; itub<19; ++itub) {
763 tubepos[2]= tubepos[2]+stepforcardB;
764 gMC->Gspos("FTUB",itub,"FAIB",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
768 // outer module positioning (FAIC)
769 tubepos[2]= -88.75+tdis;
770 for (itub=0; itub<20; ++itub) {
771 tubepos[2]= tubepos[2]+stepforcardC;
772 gMC->Gspos("FTUB",itub,"FAIC",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
778 //_____________________________________________________________________________
779 void AliTOFv2::DrawModule() const
782 // Draw a shaded view of the Time Of Flight version 2
784 // Set everything unseen
785 gMC->Gsatt("*", "seen", -1);
787 // Set ALIC mother transparent
788 gMC->Gsatt("ALIC","SEEN",0);
790 // Set the volumes visible
791 gMC->Gsatt("ALIC","SEEN",0);
793 gMC->Gsatt("FTOA","SEEN",1);
794 gMC->Gsatt("FTOB","SEEN",1);
795 gMC->Gsatt("FTOC","SEEN",1);
796 gMC->Gsatt("FLTA","SEEN",1);
797 gMC->Gsatt("FLTB","SEEN",1);
798 gMC->Gsatt("FLTC","SEEN",1);
799 gMC->Gsatt("FPLA","SEEN",1);
800 gMC->Gsatt("FPLB","SEEN",1);
801 gMC->Gsatt("FPLC","SEEN",1);
802 gMC->Gsatt("FSTR","SEEN",1);
803 gMC->Gsatt("FPEA","SEEN",1);
804 gMC->Gsatt("FPEB","SEEN",1);
805 gMC->Gsatt("FPEC","SEEN",1);
807 gMC->Gsatt("FLZ1","SEEN",0);
808 gMC->Gsatt("FLZ2","SEEN",0);
809 gMC->Gsatt("FLZ3","SEEN",0);
810 gMC->Gsatt("FLX1","SEEN",0);
811 gMC->Gsatt("FLX2","SEEN",0);
812 gMC->Gsatt("FLX3","SEEN",0);
813 gMC->Gsatt("FPAD","SEEN",0);
815 gMC->Gdopt("hide", "on");
816 gMC->Gdopt("shad", "on");
817 gMC->Gsatt("*", "fill", 7);
818 gMC->SetClipBox(".");
819 gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
821 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .02, .02);
822 gMC->Gdhead(1111, "Time Of Flight");
823 gMC->Gdman(18, 4, "MAN");
824 gMC->Gdopt("hide","off");
826 //_____________________________________________________________________________
827 void AliTOFv2::DrawDetectorModules()
830 // Draw a shaded view of the TOF detector version 2
833 //Set ALIC mother transparent
834 gMC->Gsatt("ALIC","SEEN",0);
837 //Set volumes visible
840 // Level 1 for TOF volumes
841 gMC->Gsatt("B077","seen",0);
844 //==========> Level 2
846 gMC->Gsatt("B076","seen",-1); // all B076 sub-levels skipped -
847 gMC->Gsatt("B071","seen",0);
848 gMC->Gsatt("B074","seen",0);
849 gMC->Gsatt("B075","seen",0);
850 gMC->Gsatt("B080","seen",0); // B080 does not has sub-level
854 gMC->Gsatt("B063","seen",-1); // all B063 sub-levels skipped -
855 gMC->Gsatt("B065","seen",-1); // all B065 sub-levels skipped -
856 gMC->Gsatt("B067","seen",-1); // all B067 sub-levels skipped -
857 gMC->Gsatt("B069","seen",-1); // all B069 sub-levels skipped -
858 gMC->Gsatt("B056","seen",0); // B056 does not has sub-levels -
859 gMC->Gsatt("B059","seen",-1); // all B059 sub-levels skipped -
860 gMC->Gsatt("B072","seen",-1); // all B072 sub-levels skipped -
861 gMC->Gsatt("BTR1","seen",0); // BTR1 do not have sub-levels -
862 gMC->Gsatt("BTO1","seen",0);
866 gMC->Gsatt("BTR2","seen",0); // BTR2 does not has sub-levels -
867 gMC->Gsatt("BTO2","seen",0);
870 gMC->Gsatt("BTR3","seen",0); // BTR3 do not have sub-levels -
871 gMC->Gsatt("BTO3","seen",0);
873 // ==================> Level 3
874 // Level 3 of B071 / Level 2 of BTO1
875 gMC->Gsatt("FTOC","seen",-2);
876 gMC->Gsatt("FTOB","seen",-2);
877 gMC->Gsatt("FTOA","seen",-2);
879 // Level 3 of B074 / Level 2 of BTO2
880 // -> cfr previous settings
882 // Level 3 of B075 / Level 2 of BTO3
883 // -> cfr previous settings
885 gMC->Gdopt("hide","on");
886 gMC->Gdopt("shad","on");
887 gMC->Gsatt("*", "fill", 5);
888 gMC->SetClipBox(".");
889 gMC->SetClipBox("*", 0, 1000, 0, 1000, 0, 1000);
891 gMC->Gdraw("alic", 45, 40, 0, 10, 10, .015, .015);
892 gMC->Gdhead(1111,"TOF detector V1");
893 gMC->Gdman(18, 4, "MAN");
894 gMC->Gdopt("hide","off");
897 //_____________________________________________________________________________
898 void AliTOFv2::DrawDetectorStrips()
901 // Draw a shaded view of the TOF strips for version 2
904 //Set ALIC mother transparent
905 gMC->Gsatt("ALIC","SEEN",0);
908 //Set volumes visible
910 // Level 1 for TOF volumes
911 gMC->Gsatt("B077","seen",0);
913 //==========> Level 2
915 gMC->Gsatt("B076","seen",-1); // all B076 sub-levels skipped -
916 gMC->Gsatt("B071","seen",0);
917 gMC->Gsatt("B074","seen",0);
918 gMC->Gsatt("B075","seen",0);
919 gMC->Gsatt("B080","seen",0); // B080 does not has sub-level
922 gMC->Gsatt("B063","seen",-1); // all B063 sub-levels skipped -
923 gMC->Gsatt("B065","seen",-1); // all B065 sub-levels skipped -
924 gMC->Gsatt("B067","seen",-1); // all B067 sub-levels skipped -
925 gMC->Gsatt("B069","seen",-1); // all B069 sub-levels skipped -
926 gMC->Gsatt("B056","seen",0); // B056 does not has sub-levels -
927 gMC->Gsatt("B059","seen",-1); // all B059 sub-levels skipped -
928 gMC->Gsatt("B072","seen",-1); // all B072 sub-levels skipped -
929 gMC->Gsatt("BTR1","seen",0); // BTR1 do not have sub-levels -
930 gMC->Gsatt("BTO1","seen",0);
932 // ==================> Level 3
933 // Level 3 of B071 / Level 2 of BTO1
934 gMC->Gsatt("FTOC","seen",0);
935 gMC->Gsatt("FTOB","seen",0);
936 gMC->Gsatt("FTOA","seen",0);
938 // Level 3 of B074 / Level 2 of BTO2
939 // -> cfr previous settings
941 // Level 3 of B075 / Level 2 of BTO3
942 // -> cfr previous settings
945 // ==========================> Level 4
946 // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOC
947 gMC->Gsatt("FLTC","seen",0);
948 // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOB
949 gMC->Gsatt("FLTB","seen",0);
950 // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOA
951 gMC->Gsatt("FLTA","seen",0);
953 // Level 4 of B074 / Level 3 of BTO2 / Level 2 of FTOC
954 // -> cfr previous settings
955 // Level 4 of B074 / Level 3 of BTO2 / Level 2 of FTOB
956 // -> cfr previous settings
958 // Level 4 of B075 / Level 3 of BTO3 / Level 2 of FTOC
959 // -> cfr previous settings
961 //======================================> Level 5
962 // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOC / Level 2 of FLTC
963 gMC->Gsatt("FALC","seen",0); // no children for FALC
964 gMC->Gsatt("FSTR","seen",-2);
965 gMC->Gsatt("FPEC","seen",0); // no children for FPEC
966 gMC->Gsatt("FECC","seen",0); // no children for FECC
967 gMC->Gsatt("FWAC","seen",0); // no children for FWAC
968 gMC->Gsatt("FAIC","seen",0); // no children for FAIC
970 // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOB / Level 2 of FLTB
971 gMC->Gsatt("FALB","seen",0); // no children for FALB
972 //--> gMC->Gsatt("FSTR","seen",-2);
975 // -> cfr previous settings
976 gMC->Gsatt("FPEB","seen",0); // no children for FPEB
977 gMC->Gsatt("FECB","seen",0); // no children for FECB
978 gMC->Gsatt("FWAB","seen",0); // no children for FWAB
979 gMC->Gsatt("FAIB","seen",0); // no children for FAIB
981 // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOA / Level 2 of FLTA
982 gMC->Gsatt("FALA","seen",0); // no children for FALB
983 //--> gMC->Gsatt("FSTR","seen",-2);
984 // -> cfr previous settings
985 gMC->Gsatt("FPEA","seen",0); // no children for FPEA
986 gMC->Gsatt("FECA","seen",0); // no children for FECA
987 gMC->Gsatt("FWAA","seen",0); // no children for FWAA
988 gMC->Gsatt("FAIA","seen",0); // no children for FAIA
991 gMC->Gsatt("BTR2","seen",0); // BTR2 does not has sub-levels -
992 gMC->Gsatt("BTO2","seen",0);
995 gMC->Gsatt("BTR3","seen",0); // BTR3 do not have sub-levels -
996 gMC->Gsatt("BTO3","seen",0);
998 // for others Level 5, cfr. previous settings
1000 gMC->Gdopt("hide","on");
1001 gMC->Gdopt("shad","on");
1002 gMC->Gsatt("*", "fill", 5);
1003 gMC->SetClipBox(".");
1004 gMC->SetClipBox("*", 0, 1000, 0, 1000, 0, 1000);
1005 gMC->DefaultRange();
1006 gMC->Gdraw("alic", 45, 40, 0, 10, 10, .015, .015);
1007 gMC->Gdhead(1111,"TOF Strips V1");
1008 gMC->Gdman(18, 4, "MAN");
1009 gMC->Gdopt("hide","off");
1012 //_____________________________________________________________________________
1013 void AliTOFv2::CreateMaterials()
1016 // Define materials for the Time Of Flight
1018 AliTOF::CreateMaterials();
1021 //_____________________________________________________________________________
1022 void AliTOFv2::Init()
1025 // Initialise the detector after the geometry has been defined
1028 printf("%s: **************************************"
1030 "**************************************\n",ClassName());
1031 printf("\n%s: Version 2 of TOF initialing, "
1032 "TOF with holes for PHOS and RICH \n",ClassName());
1037 fIdFTOA = gMC->VolId("FTOA");
1038 fIdFTOB = gMC->VolId("FTOB");
1039 fIdFTOC = gMC->VolId("FTOC");
1040 fIdFLTA = gMC->VolId("FLTA");
1041 fIdFLTB = gMC->VolId("FLTB");
1042 fIdFLTC = gMC->VolId("FLTC");
1045 printf("%s: **************************************"
1047 "**************************************\n",ClassName());
1051 //_____________________________________________________________________________
1052 void AliTOFv2::StepManager()
1055 // Procedure called at each step in the Time Of Flight
1057 TLorentzVector mom, pos;
1058 Float_t xm[3],pm[3],xpad[3],ppad[3];
1059 Float_t hits[13],phi,phid,z;
1061 Int_t sector, plate, padx, padz, strip;
1062 Int_t copy, padzid, padxid, stripid, i;
1063 Int_t *idtmed = fIdtmed->GetArray()-499;
1064 Float_t incidenceAngle;
1066 if(gMC->GetMedium()==idtmed[513] &&
1067 gMC->IsTrackEntering() && gMC->TrackCharge()
1068 && gMC->CurrentVolID(copy)==fIdSens)
1070 // getting information about hit volumes
1072 padzid=gMC->CurrentVolOffID(2,copy);
1075 padxid=gMC->CurrentVolOffID(1,copy);
1078 stripid=gMC->CurrentVolOffID(4,copy);
1081 gMC->TrackPosition(pos);
1082 gMC->TrackMomentum(mom);
1084 // Double_t NormPos=1./pos.Rho();
1085 Double_t normMom=1./mom.Rho();
1087 // getting the cohordinates in pad ref system
1088 xm[0] = (Float_t)pos.X();
1089 xm[1] = (Float_t)pos.Y();
1090 xm[2] = (Float_t)pos.Z();
1092 pm[0] = (Float_t)mom.X()*normMom;
1093 pm[1] = (Float_t)mom.Y()*normMom;
1094 pm[2] = (Float_t)mom.Z()*normMom;
1096 gMC->Gmtod(xm,xpad,1);
1097 gMC->Gmtod(pm,ppad,2);
1099 if (ppad[1] > 1.) ppad[1]=1;
1100 if (ppad[1] < -1.) ppad[1]=-1;
1101 incidenceAngle = TMath::ACos(ppad[1])*kRaddeg;
1106 if (TMath::Abs(z) <= fZlenA*0.5) plate = 3;
1107 if (z < (fZlenA*0.5+fZlenB) &&
1108 z > fZlenA*0.5) plate = 4;
1109 if (z >-(fZlenA*0.5+fZlenB) &&
1110 z < -fZlenA*0.5) plate = 2;
1111 if (z > (fZlenA*0.5+fZlenB)) plate = 5;
1112 if (z <-(fZlenA*0.5+fZlenB)) plate = 1;
1115 phid = phi*kRaddeg+180.;
1116 sector = Int_t (phid/20.);
1124 hits[6] = mom.Rho();
1129 hits[11]= incidenceAngle;
1130 hits[12]= gMC->Edep();
1138 AddHit(gAlice->CurrentTrack(),vol, hits);