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"
38 ClassImp(AliMUONTriggerGeometryBuilder)
41 //______________________________________________________________________________
42 AliMUONTriggerGeometryBuilder::AliMUONTriggerGeometryBuilder(AliMUON* muon)
43 : AliMUONVGeometryBuilder(16, 4),
46 // Standard constructor
50 //______________________________________________________________________________
51 AliMUONTriggerGeometryBuilder::AliMUONTriggerGeometryBuilder()
52 : AliMUONVGeometryBuilder(),
55 // Default constructor
58 //______________________________________________________________________________
59 AliMUONTriggerGeometryBuilder::~AliMUONTriggerGeometryBuilder() {
67 //______________________________________________________________________________
68 void AliMUONTriggerGeometryBuilder::CreateGeometry()
70 // From AliMUONv1::CreateGeometry()
73 zpos1 and zpos2 are the middle of the first and second
74 planes of station 1 (+1m for second station):
75 zpos1=(zpos1m+zpos1p)/2=(15999+16071)/2=16035 mm, thick/2=40 mm
76 zpos2=(zpos2m+zpos2p)/2=(16169+16241)/2=16205 mm, thick/2=40 mm
77 zposxm and zposxp= middles of gaz gaps within a detection plane
78 rem: the total thickness accounts for 1 mm of al on both
79 side of the RPCs (see zpos1 and zpos2)
82 Int_t *idtmed = fMUON->GetIdtmed()->GetArray()-1099;
83 Int_t idAir= idtmed[1100]; // medium 1
84 Int_t idAlu1=idtmed[1103]; // medium 4
85 Int_t detElemId=0; // Detection Element Number
89 // vertical gap between right and left chambers (kDXZERO*2=4cm)
90 const Float_t kDXZERO=2.;
91 // main distances for chamber definition in first plane/first station
92 const Float_t kXMIN=34.;
93 const Float_t kXMED=51.;
94 const Float_t kXMAX=255.;
95 // 090704 kXMAX changed from 272 to 255.
96 // (see fig.2-4 & 2-5 of Local Trigger Board PRR)
97 // segmentation updated accordingly
98 const Float_t kYMIN=34.;
99 const Float_t kYMAX=51.;
100 // inner/outer radius of flange between beam shield. and chambers (1/station)
101 // const Float_t kRMIN[2]={50.,50.};
102 // const Float_t kRMAX[2]={64.,68.};
103 // z position of the middle of the gas gap in mother vol
104 const Float_t kZm=-3.6;
105 const Float_t kZp=+3.6;
107 Float_t zpos1= AliMUONConstants::DefaultChamberZ(10);
108 Double_t dstation = ( ( - AliMUONConstants::DefaultChamberZ(11)) -
109 ( - AliMUONConstants::DefaultChamberZ(10)) ) /2.1;
113 // ratio of zpos1m/zpos1p and inverse for first plane
114 Float_t zmp=(zpos1-3.6)/(zpos1+3.6);
117 Int_t icount=0; // chamber counter (0 1 2 3)
119 for (Int_t istation=0; istation<2; istation++) { // loop on stations
120 for (Int_t iplane=0; iplane<2; iplane++) { // loop on detection planes
122 Int_t iVolNum=1; // counter Volume Number
123 icount = Int_t(iplane<<0)+Int_t(istation<<1);
125 par[0] = AliMUONConstants::Rmin(5+istation);
126 par[1] = AliMUONConstants::Rmax(5+istation);
128 sprintf(volName,"%s%d", "SC",11+icount);
129 gMC->Gsvolu(volName,"TUBE", idAir, par, 3);
130 //SetVolume(10+icount, volName);
131 // Float_t zpos = AliMUONConstants::DefaultChamberZ(10+icount);
134 // Flange between beam shielding and RPC
135 tpar[0]= kRMIN[istation];
136 tpar[1]= kRMAX[istation];
139 sprintf(volFlange,"SF%dA",icount+1);
140 gMC->Gsvolu(volFlange,"TUBE",idAlu1,tpar,3); // Al
142 //gMC->Gspos(volFlange,1,"ALIC",0.,0.,zpos,0,"MANY");
143 iChamber->GetGeometry()->GetEnvelopeStore()
144 ->AddEnvelope(volFlange, 0, false, "MANY");
148 // Float_t zRatio = zpos / zpos1;
149 Float_t zRatio = AliMUONConstants::DefaultRatioTriggerChamber(icount);
154 // envelopes (same size except line 5, all virtual)
156 tpar[1] = kYMIN * zRatio;
158 Int_t i=0; // counter
159 for (Int_t icolumn=0; icolumn<2; icolumn++) {
160 for (Int_t iline=1; iline<10; iline++){
161 tpar[0] = (kXMAX/2.) * zRatio;
162 if (iline==5) tpar[0] = ((kXMAX-kXMED)/2.)*zRatio;
164 sprintf(volEnv[i],"S%dR%d",icount,iline);
166 sprintf(volEnv[i],"S%dL%d",icount,iline);
167 // gMC->Gsvolu(volEnv[i],"BOX",idAir,tpar,0);
175 tpar[2]= 0.; char volAlu[5]; // Alu
176 char volBak[5]; // Bakelite
177 char volGaz[5]; // Gas streamer
178 sprintf(volAlu,"SC%dA",icount+1);
179 sprintf(volBak,"SB%dA",icount+1);
180 sprintf(volGaz,"S%dG",icount+11);
181 gMC->Gsvolu(volAlu,"BOX",idAlu1,tpar,0); // Al
182 gMC->Gsvolu(volBak,"BOX",idtmed[1107],tpar,0); // Bakelite
183 gMC->Gsvolu(volGaz,"BOX",idtmed[1106],tpar,0); // Gas streamer
187 gMC->Gsposp(volGaz,1,volBak,0.,0.,0.,0,"ONLY",tpar,3);
189 gMC->Gsposp(volBak,1,volAlu,0.,0.,0.,0,"ONLY",tpar,3);
192 Float_t xEnv = (kDXZERO+kXMED+(kXMAX-kXMED)/2.)*zRatio;
193 Float_t yEnvM = 0.; // y low position of envelope in chamber
194 Float_t yEnvP = 0.; // y up position of envelope in chamber
195 Float_t yEnvPsave = 0.; // tmp data
196 Float_t yEnvMsave = 0.; // tmp data
197 Float_t xpos = 0.; // x position of RPC in envelope
198 Float_t ypos = 0.; // y position of RPC in envelope
200 dpar[0] = ((kXMAX-kXMED)/2.)*zRatio;
201 dpar[1] = kYMIN * zRatio;
203 detElemId = (10+icount+1)*100;
204 GetEnvelopes(16+icount)->AddEnvelope(volEnv[4], detElemId, true, TGeoTranslation(xEnv,yEnvP,kZp));
205 detElemId = (10+icount+1)*100+9;
206 GetEnvelopes(16+icount)->AddEnvelope(volEnv[13], detElemId, true, TGeoTranslation(-xEnv,yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
208 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[4],iVolNum++,3, dpar);
209 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[13],iVolNum++,3, dpar);
211 // chamber type B (plus envelope chambers B & C)
212 xEnv = (kDXZERO+kXMAX/2.)*zRatio;
215 yEnvP = (yEnvMsave + kYMIN * zRatio ) * zpm + kYMIN * zRatio;
216 yEnvM = (yEnvPsave + kYMIN * zRatio ) * zmp + kYMIN * zRatio;
217 dpar[0] = ((kXMAX-kXMIN)/2.) * zRatio;
218 dpar[1] = ((kYMAX-kYMIN)/2.) * zRatio;
219 xpos = kXMIN/2. * zRatio;
220 ypos = (kYMIN - kYMIN/4.) * zRatio;
222 detElemId = (10+icount+1)*100+17;
223 GetEnvelopes(16+icount)->AddEnvelope(volEnv[3], detElemId, true, TGeoTranslation( xEnv,-yEnvM,kZm));
224 detElemId = (10+icount+1)*100+1;
225 GetEnvelopes(16+icount)->AddEnvelope(volEnv[5], detElemId, true, TGeoTranslation( xEnv, yEnvM,kZm));
226 detElemId = (10+icount+1)*100+10;
227 GetEnvelopes(16+icount)->AddEnvelope(volEnv[12], detElemId, true, TGeoTranslation(-xEnv,-yEnvP,kZp),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
228 detElemId = (10+icount+1)*100+8;
229 GetEnvelopes(16+icount)->AddEnvelope(volEnv[14], detElemId, true, TGeoTranslation(-xEnv, yEnvP,kZp),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
231 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[3],iVolNum++,TGeoTranslation(xpos, ypos,0.),3,dpar);
232 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[5],iVolNum++,TGeoTranslation(xpos,-ypos,0.),3,dpar);
233 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[12],iVolNum++,TGeoTranslation(xpos, ypos,0.),3,dpar);
234 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[14],iVolNum++,TGeoTranslation(xpos,-ypos,0.),3,dpar);
236 // chamber type C (note: same Z than type B)
237 dpar[0] = (kXMAX/2)*zRatio;
238 dpar[1] = (kYMAX/2)*zRatio;
240 ypos = ((kYMAX - kYMIN)/2.) * zRatio;
242 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[3],iVolNum++,TGeoTranslation(xpos,-ypos,0.),3,dpar);
243 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[5],iVolNum++,TGeoTranslation(xpos, ypos,0.),3,dpar);
244 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[12],iVolNum++,TGeoTranslation(xpos,-ypos,0.),3,dpar);
245 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[14],iVolNum++,TGeoTranslation(xpos, ypos,0.),3,dpar);
247 // chamber type D, E and F (same size)
251 yEnvP = (yEnvMsave + kYMIN * zRatio ) * zpm + kYMIN * zRatio;
252 yEnvM = (yEnvPsave + kYMIN * zRatio ) * zmp + kYMIN * zRatio;
253 dpar[0] = (kXMAX/2.)*zRatio;
254 dpar[1] = kYMIN*zRatio;
256 detElemId = (10+icount+1)*100+16;
257 GetEnvelopes(16+icount)->AddEnvelope(volEnv[2], detElemId, true, TGeoTranslation(xEnv,-yEnvP,kZp));
258 detElemId = (10+icount+1)*100+2;
259 GetEnvelopes(16+icount)->AddEnvelope(volEnv[6], detElemId, true, TGeoTranslation(xEnv, yEnvP,kZp));
260 detElemId = (10+icount+1)*100+11;
261 GetEnvelopes(16+icount)->AddEnvelope(volEnv[11], detElemId, true, TGeoTranslation(-xEnv,-yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
262 detElemId = (10+icount+1)*100+7;
263 GetEnvelopes(16+icount)->AddEnvelope(volEnv[15], detElemId, true, TGeoTranslation(-xEnv, yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
265 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[2],iVolNum++,3, dpar);
266 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[6],iVolNum++,3, dpar);
267 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[11],iVolNum++,3, dpar);
268 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[15],iVolNum++,3, dpar);
273 yEnvP = (yEnvMsave + kYMIN * zRatio ) * zpm + kYMIN * zRatio;
274 yEnvM = (yEnvPsave + kYMIN * zRatio ) * zmp + kYMIN * zRatio;
276 detElemId = (10+icount+1)*100+15;
277 GetEnvelopes(16+icount)->AddEnvelope(volEnv[1], detElemId, true, TGeoTranslation(xEnv,-yEnvM,kZm));
278 detElemId = (10+icount+1)*100+3;
279 GetEnvelopes(16+icount)->AddEnvelope(volEnv[7], detElemId, true, TGeoTranslation(xEnv, yEnvM,kZm));
280 detElemId = (10+icount+1)*100+12;
281 GetEnvelopes(16+icount)->AddEnvelope(volEnv[10], detElemId, true, TGeoTranslation(-xEnv,-yEnvP,kZp),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
282 detElemId = (10+icount+1)*100+6;
283 GetEnvelopes(16+icount)->AddEnvelope(volEnv[16], detElemId, true, TGeoTranslation(-xEnv, yEnvP,kZp),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
285 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[1],iVolNum++,3,dpar);
286 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[7],iVolNum++,3,dpar);
287 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[10],iVolNum++,3,dpar);
288 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[16],iVolNum++,3,dpar);
294 yEnvP = (yEnvMsave + kYMIN * zRatio ) * zpm + kYMIN * zRatio;
295 yEnvM = (yEnvPsave + kYMIN * zRatio ) * zmp + kYMIN * zRatio;
297 detElemId = (10+icount+1)*100+14;
298 GetEnvelopes(16+icount)->AddEnvelope(volEnv[0], detElemId, true, TGeoTranslation(xEnv,-yEnvP,kZp));
299 detElemId = (10+icount+1)*100+4;
300 GetEnvelopes(16+icount)->AddEnvelope(volEnv[8], detElemId, true, TGeoTranslation(xEnv, yEnvP,kZp));
301 detElemId = (10+icount+1)*100+13;
302 GetEnvelopes(16+icount)->AddEnvelope(volEnv[9], detElemId, true, TGeoTranslation(-xEnv,-yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
303 detElemId = (10+icount+1)*100+5;
304 GetEnvelopes(16+icount)->AddEnvelope(volEnv[17], detElemId, true, TGeoTranslation(-xEnv, yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
306 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[0],iVolNum++,3,dpar);
307 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[8],iVolNum++,3,dpar);
308 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[9],iVolNum++,3,dpar);
309 GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[17],iVolNum++,3,dpar);
311 } // end loop on detection planes
312 } // end loop on stations
315 //______________________________________________________________________________
316 void AliMUONTriggerGeometryBuilder::SetTransformations()
318 // Defines the transformations for the trigger chambers.
321 if (gAlice->GetModule("SHIL")) {
322 SetMotherVolume(16, "YOUT2");
323 SetMotherVolume(17, "YOUT2");
324 SetMotherVolume(18, "YOUT2");
325 SetMotherVolume(19, "YOUT2");
328 SetVolume(16, "SC11");
329 SetVolume(17, "SC12");
330 SetVolume(18, "SC13");
331 SetVolume(19, "SC14");
333 Double_t zpos1= AliMUONConstants::DefaultChamberZ(10);
334 SetTranslation(16, TGeoTranslation(0., 0., zpos1));
336 zpos1= AliMUONConstants::DefaultChamberZ(11);
337 SetTranslation(17, TGeoTranslation(0., 0., zpos1));
339 zpos1= AliMUONConstants::DefaultChamberZ(12);
340 SetTranslation(18, TGeoTranslation(0., 0., zpos1));
342 zpos1= AliMUONConstants::DefaultChamberZ(13);
343 SetTranslation(19, TGeoTranslation(0., 0., zpos1));
346 //______________________________________________________________________________
347 void AliMUONTriggerGeometryBuilder::SetSensitiveVolumes()
349 // Defines the sensitive volumes for trigger station chambers.
352 GetGeometry(16)->SetSensitiveVolume("S11G");
353 GetGeometry(17)->SetSensitiveVolume("S12G");
354 GetGeometry(18)->SetSensitiveVolume("S13G");
355 GetGeometry(19)->SetSensitiveVolume("S14G");