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 // -----------------------------------
19 // Class AliMUONTriggerGeometryBuilder
20 // -----------------------------------
21 // MUON Trigger stations geometry
22 // construction class.
23 // Author: Philippe Crochet (LPCCFd)
25 #include <TVirtualMC.h>
26 #include <TGeoMatrix.h>
31 #include "AliMUONTriggerGeometryBuilder.h"
33 #include "AliMUONConstants.h"
34 #include "AliMUONGeometryModule.h"
35 #include "AliMUONGeometryEnvelopeStore.h"
37 ClassImp(AliMUONTriggerGeometryBuilder)
39 //______________________________________________________________________________
40 AliMUONTriggerGeometryBuilder::AliMUONTriggerGeometryBuilder(AliMUON* muon)
41 : AliMUONVGeometryBuilder(10, 11, 12, 13),
44 // Standard constructor
48 //______________________________________________________________________________
49 AliMUONTriggerGeometryBuilder::AliMUONTriggerGeometryBuilder()
50 : AliMUONVGeometryBuilder(),
53 // Default constructor
57 //______________________________________________________________________________
58 AliMUONTriggerGeometryBuilder::AliMUONTriggerGeometryBuilder(const AliMUONTriggerGeometryBuilder& rhs)
59 : AliMUONVGeometryBuilder(rhs)
61 // Protected copy constructor
63 AliFatal("Copy constructor is not implemented.");
66 //______________________________________________________________________________
67 AliMUONTriggerGeometryBuilder::~AliMUONTriggerGeometryBuilder() {
71 //______________________________________________________________________________
72 AliMUONTriggerGeometryBuilder&
73 AliMUONTriggerGeometryBuilder::operator = (const AliMUONTriggerGeometryBuilder& rhs)
75 // Protected assignement operator
77 // check assignement to self
78 if (this == &rhs) return *this;
80 AliFatal("Assignment operator is not implemented.");
89 //______________________________________________________________________________
90 void AliMUONTriggerGeometryBuilder::CreateGeometry()
92 // From AliMUONv1::CreateGeometry()
95 zpos1 and zpos2 are the middle of the first and second
96 planes of station 1 (+1m for second station):
97 zpos1=(zpos1m+zpos1p)/2=(15999+16071)/2=16035 mm, thick/2=40 mm
98 zpos2=(zpos2m+zpos2p)/2=(16169+16241)/2=16205 mm, thick/2=40 mm
99 zposxm and zposxp= middles of gaz gaps within a detection plane
100 rem: the total thickness accounts for 1 mm of al on both
101 side of the RPCs (see zpos1 and zpos2)
104 Int_t *idtmed = fMUON->GetIdtmed()->GetArray()-1099;
105 Int_t idAir= idtmed[1100]; // medium 1
106 Int_t idAlu1=idtmed[1103]; // medium 4
107 Int_t detElemId=0; // Detection Element Number
111 // vertical gap between right and left chambers (kDXZERO*2=4cm)
112 const Float_t kDXZERO=2.;
113 // main distances for chamber definition in first plane/first station
114 const Float_t kXMIN=34.;
115 const Float_t kXMED=51.;
116 const Float_t kXMAX=255.;
117 // 090704 kXMAX changed from 272 to 255.
118 // (see fig.2-4 & 2-5 of Local Trigger Board PRR)
119 // segmentation updated accordingly
120 const Float_t kYMIN=34.;
121 const Float_t kYMAX=51.;
122 // inner/outer radius of flange between beam shield. and chambers (1/station)
123 // const Float_t kRMIN[2]={50.,50.};
124 // const Float_t kRMAX[2]={64.,68.};
125 // z position of the middle of the gas gap in mother vol
126 const Float_t kZm=-3.6;
127 const Float_t kZp=+3.6;
129 Float_t zpos1= AliMUONConstants::DefaultChamberZ(10);
130 Double_t dstation = ( ( - AliMUONConstants::DefaultChamberZ(11)) -
131 ( - AliMUONConstants::DefaultChamberZ(10)) ) /2.1;
135 // ratio of zpos1m/zpos1p and inverse for first plane
136 Float_t zmp=(zpos1-3.6)/(zpos1+3.6);
139 Int_t icount=0; // chamber counter (0 1 2 3)
141 for (Int_t istation=0; istation<2; istation++) { // loop on stations
142 for (Int_t iplane=0; iplane<2; iplane++) { // loop on detection planes
144 Int_t iVolNum=1; // counter Volume Number
145 icount = Int_t(iplane<<0)+Int_t(istation<<1);
147 par[0] = AliMUONConstants::Rmin(5+istation);
148 par[1] = AliMUONConstants::Rmax(5+istation);
150 sprintf(volName,"%s%d", "SC",11+icount);
151 gMC->Gsvolu(volName,"TUBE", idAir, par, 3);
152 //SetVolume(10+icount, volName);
153 // Float_t zpos = AliMUONConstants::DefaultChamberZ(10+icount);
156 // Flange between beam shielding and RPC
157 tpar[0]= kRMIN[istation];
158 tpar[1]= kRMAX[istation];
161 sprintf(volFlange,"SF%dA",icount+1);
162 gMC->Gsvolu(volFlange,"TUBE",idAlu1,tpar,3); // Al
164 //gMC->Gspos(volFlange,1,"ALIC",0.,0.,zpos,0,"MANY");
165 iChamber->GetGeometry()->GetEnvelopeStore()
166 ->AddEnvelope(volFlange, 0, false, "MANY");
170 // Float_t zRatio = zpos / zpos1;
171 Float_t zRatio = AliMUONConstants::DefaultRatioTriggerChamber(icount);
176 // envelopes (same size except line 5, all virtual)
178 tpar[1] = kYMIN * zRatio;
180 Int_t i=0; // counter
181 for (Int_t icolumn=0; icolumn<2; icolumn++) {
182 for (Int_t iline=1; iline<10; iline++){
183 tpar[0] = (kXMAX/2.) * zRatio;
184 if (iline==5) tpar[0] = ((kXMAX-kXMED)/2.)*zRatio;
186 sprintf(volEnv[i],"S%dR%d",icount,iline);
188 sprintf(volEnv[i],"S%dL%d",icount,iline);
189 // gMC->Gsvolu(volEnv[i],"BOX",idAir,tpar,0);
197 tpar[2]= 0.; char volAlu[5]; // Alu
198 char volBak[5]; // Bakelite
199 char volGaz[5]; // Gas streamer
200 sprintf(volAlu,"SC%dA",icount+1);
201 sprintf(volBak,"SB%dA",icount+1);
202 sprintf(volGaz,"S%dG",icount+11);
203 gMC->Gsvolu(volAlu,"BOX",idAlu1,tpar,0); // Al
204 gMC->Gsvolu(volBak,"BOX",idtmed[1107],tpar,0); // Bakelite
205 gMC->Gsvolu(volGaz,"BOX",idtmed[1106],tpar,0); // Gas streamer
209 gMC->Gsposp(volGaz,1,volBak,0.,0.,0.,0,"ONLY",tpar,3);
211 gMC->Gsposp(volBak,1,volAlu,0.,0.,0.,0,"ONLY",tpar,3);
214 Float_t xEnv = (kDXZERO+kXMED+(kXMAX-kXMED)/2.)*zRatio;
215 Float_t yEnvM = 0.; // y low position of envelope in chamber
216 Float_t yEnvP = 0.; // y up position of envelope in chamber
217 Float_t yEnvPsave = 0.; // tmp data
218 Float_t yEnvMsave = 0.; // tmp data
219 Float_t xpos = 0.; // x position of RPC in envelope
220 Float_t ypos = 0.; // y position of RPC in envelope
222 dpar[0] = ((kXMAX-kXMED)/2.)*zRatio;
223 dpar[1] = kYMIN * zRatio;
225 detElemId = (10+icount+1)*100;
226 GetEnvelopes(10+icount)->AddEnvelope(volEnv[4], detElemId, true, TGeoTranslation(xEnv,yEnvP,kZp));
227 detElemId = (10+icount+1)*100+9;
228 GetEnvelopes(10+icount)->AddEnvelope(volEnv[13], detElemId, true, TGeoTranslation(-xEnv,yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
230 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[4],iVolNum++,3, dpar);
231 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[13],iVolNum++,3, dpar);
233 // chamber type B (plus envelope chambers B & C)
234 xEnv = (kDXZERO+kXMAX/2.)*zRatio;
237 yEnvP = (yEnvMsave + kYMIN * zRatio ) * zpm + kYMIN * zRatio;
238 yEnvM = (yEnvPsave + kYMIN * zRatio ) * zmp + kYMIN * zRatio;
239 dpar[0] = ((kXMAX-kXMIN)/2.) * zRatio;
240 dpar[1] = ((kYMAX-kYMIN)/2.) * zRatio;
241 xpos = kXMIN/2. * zRatio;
242 ypos = (kYMIN - kYMIN/4.) * zRatio;
244 detElemId = (10+icount+1)*100+17;
245 GetEnvelopes(10+icount)->AddEnvelope(volEnv[3], detElemId, true, TGeoTranslation( xEnv,-yEnvM,kZm));
246 detElemId = (10+icount+1)*100+1;
247 GetEnvelopes(10+icount)->AddEnvelope(volEnv[5], detElemId, true, TGeoTranslation( xEnv, yEnvM,kZm));
248 detElemId = (10+icount+1)*100+10;
249 GetEnvelopes(10+icount)->AddEnvelope(volEnv[12], detElemId, true, TGeoTranslation(-xEnv,-yEnvP,kZp),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
250 detElemId = (10+icount+1)*100+8;
251 GetEnvelopes(10+icount)->AddEnvelope(volEnv[14], detElemId, true, TGeoTranslation(-xEnv, yEnvP,kZp),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
253 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[3],iVolNum++,TGeoTranslation(xpos, ypos,0.),3,dpar);
254 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[5],iVolNum++,TGeoTranslation(xpos,-ypos,0.),3,dpar);
255 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[12],iVolNum++,TGeoTranslation(xpos, ypos,0.),3,dpar);
256 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[14],iVolNum++,TGeoTranslation(xpos,-ypos,0.),3,dpar);
258 // chamber type C (note: same Z than type B)
259 dpar[0] = (kXMAX/2)*zRatio;
260 dpar[1] = (kYMAX/2)*zRatio;
262 ypos = ((kYMAX - kYMIN)/2.) * zRatio;
264 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[3],iVolNum++,TGeoTranslation(xpos,-ypos,0.),3,dpar);
265 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[5],iVolNum++,TGeoTranslation(xpos, ypos,0.),3,dpar);
266 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[12],iVolNum++,TGeoTranslation(xpos,-ypos,0.),3,dpar);
267 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[14],iVolNum++,TGeoTranslation(xpos, ypos,0.),3,dpar);
269 // chamber type D, E and F (same size)
273 yEnvP = (yEnvMsave + kYMIN * zRatio ) * zpm + kYMIN * zRatio;
274 yEnvM = (yEnvPsave + kYMIN * zRatio ) * zmp + kYMIN * zRatio;
275 dpar[0] = (kXMAX/2.)*zRatio;
276 dpar[1] = kYMIN*zRatio;
278 detElemId = (10+icount+1)*100+16;
279 GetEnvelopes(10+icount)->AddEnvelope(volEnv[2], detElemId, true, TGeoTranslation(xEnv,-yEnvP,kZp));
280 detElemId = (10+icount+1)*100+2;
281 GetEnvelopes(10+icount)->AddEnvelope(volEnv[6], detElemId, true, TGeoTranslation(xEnv, yEnvP,kZp));
282 detElemId = (10+icount+1)*100+11;
283 GetEnvelopes(10+icount)->AddEnvelope(volEnv[11], detElemId, true, TGeoTranslation(-xEnv,-yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
284 detElemId = (10+icount+1)*100+7;
285 GetEnvelopes(10+icount)->AddEnvelope(volEnv[15], detElemId, true, TGeoTranslation(-xEnv, yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
287 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[2],iVolNum++,3, dpar);
288 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[6],iVolNum++,3, dpar);
289 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[11],iVolNum++,3, dpar);
290 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[15],iVolNum++,3, dpar);
295 yEnvP = (yEnvMsave + kYMIN * zRatio ) * zpm + kYMIN * zRatio;
296 yEnvM = (yEnvPsave + kYMIN * zRatio ) * zmp + kYMIN * zRatio;
298 detElemId = (10+icount+1)*100+15;
299 GetEnvelopes(10+icount)->AddEnvelope(volEnv[1], detElemId, true, TGeoTranslation(xEnv,-yEnvM,kZm));
300 detElemId = (10+icount+1)*100+3;
301 GetEnvelopes(10+icount)->AddEnvelope(volEnv[7], detElemId, true, TGeoTranslation(xEnv, yEnvM,kZm));
302 detElemId = (10+icount+1)*100+12;
303 GetEnvelopes(10+icount)->AddEnvelope(volEnv[10], detElemId, true, TGeoTranslation(-xEnv,-yEnvP,kZp),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
304 detElemId = (10+icount+1)*100+6;
305 GetEnvelopes(10+icount)->AddEnvelope(volEnv[16], detElemId, true, TGeoTranslation(-xEnv, yEnvP,kZp),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
307 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[1],iVolNum++,3,dpar);
308 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[7],iVolNum++,3,dpar);
309 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[10],iVolNum++,3,dpar);
310 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[16],iVolNum++,3,dpar);
316 yEnvP = (yEnvMsave + kYMIN * zRatio ) * zpm + kYMIN * zRatio;
317 yEnvM = (yEnvPsave + kYMIN * zRatio ) * zmp + kYMIN * zRatio;
319 detElemId = (10+icount+1)*100+14;
320 GetEnvelopes(10+icount)->AddEnvelope(volEnv[0], detElemId, true, TGeoTranslation(xEnv,-yEnvP,kZp));
321 detElemId = (10+icount+1)*100+4;
322 GetEnvelopes(10+icount)->AddEnvelope(volEnv[8], detElemId, true, TGeoTranslation(xEnv, yEnvP,kZp));
323 detElemId = (10+icount+1)*100+13;
324 GetEnvelopes(10+icount)->AddEnvelope(volEnv[9], detElemId, true, TGeoTranslation(-xEnv,-yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
325 detElemId = (10+icount+1)*100+5;
326 GetEnvelopes(10+icount)->AddEnvelope(volEnv[17], detElemId, true, TGeoTranslation(-xEnv, yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
328 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[0],iVolNum++,3,dpar);
329 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[8],iVolNum++,3,dpar);
330 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[9],iVolNum++,3,dpar);
331 GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[17],iVolNum++,3,dpar);
333 } // end loop on detection planes
334 } // end loop on stations
337 //______________________________________________________________________________
338 void AliMUONTriggerGeometryBuilder::SetTransformations()
340 // Defines the transformations for the trigger chambers.
343 if (gAlice->GetModule("SHIL")) {
344 SetMotherVolume(10, "YOUT2");
345 SetMotherVolume(11, "YOUT2");
346 SetMotherVolume(12, "YOUT2");
347 SetMotherVolume(13, "YOUT2");
350 SetVolume(10, "SC11");
351 SetVolume(11, "SC12");
352 SetVolume(12, "SC13");
353 SetVolume(13, "SC14");
355 Double_t zpos1= AliMUONConstants::DefaultChamberZ(10);
356 SetTranslation(10, TGeoTranslation(0., 0., zpos1));
358 zpos1= AliMUONConstants::DefaultChamberZ(11);
359 SetTranslation(11, TGeoTranslation(0., 0., zpos1));
361 zpos1= AliMUONConstants::DefaultChamberZ(12);
362 SetTranslation(12, TGeoTranslation(0., 0., zpos1));
364 zpos1= AliMUONConstants::DefaultChamberZ(13);
365 SetTranslation(13, TGeoTranslation(0., 0., zpos1));
368 //______________________________________________________________________________
369 void AliMUONTriggerGeometryBuilder::SetSensitiveVolumes()
371 // Defines the sensitive volumes for trigger station chambers.
374 GetGeometry(10)->SetSensitiveVolume("S11G");
375 GetGeometry(11)->SetSensitiveVolume("S12G");
376 GetGeometry(12)->SetSensitiveVolume("S13G");
377 GetGeometry(13)->SetSensitiveVolume("S14G");